{"id":6699,"date":"2026-08-07T08:10:15","date_gmt":"2026-08-07T08:10:15","guid":{"rendered":"https:\/\/stardl.com\/?p=6699"},"modified":"2026-08-07T08:11:40","modified_gmt":"2026-08-07T08:11:40","slug":"%d1%87%d1%82%d0%be-%d1%82%d0%b0%d0%ba%d0%be%d0%b5-%d1%80%d0%b0%d0%b4%d0%b0%d1%80-%d0%bf%d0%be%d0%bb%d0%bd%d0%be%d0%b5-%d1%80%d1%83%d0%ba%d0%be%d0%b2%d0%be%d0%b4%d1%81%d1%82%d0%b2%d0%be-%d0%bf%d0%be","status":"publish","type":"post","link":"https:\/\/stardl.com\/ru\/what-is-radar-complete-guide-to-radar-technology\/","title":{"rendered":"\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0440\u0430\u0434\u0430\u0440? \u041f\u043e\u043b\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u043e \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u0440\u0430\u0434\u0430\u0440\u043e\u0432"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block has-ast-global-color-4-background-color has-background\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);padding-top:var(--wp--preset--spacing--50);padding-right:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\" id=\"rank-math-toc\"><h2>\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435<\/h2><nav><ul><li><a href=\"#how-radar-works-the-basic-principle\">\u041a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0440\u0430\u0434\u0430\u0440: \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u043f\u0440\u0438\u043d\u0446\u0438\u043f<\/a><ul><li><a href=\"#the-transmit-reflect-receive-cycle\">\u0426\u0438\u043a\u043b \u00ab\u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0430-\u043e\u0442\u0440\u0430\u0436\u0435\u043d\u0438\u0435-\u043f\u0440\u0438\u0435\u043c\u00bb<\/a><\/li><li><a href=\"#measuring-distance-the-range-equation\">\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0440\u0430\u0441\u0441\u0442\u043e\u044f\u043d\u0438\u044f: \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0434\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/a><\/li><li><a href=\"#measuring-velocity-the-doppler-effect\">\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438: \u044d\u0444\u0444\u0435\u043a\u0442 \u0414\u043e\u043f\u043b\u0435\u0440\u0430<\/a><\/li><li><a href=\"#measuring-angle-direction-finding\">\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0443\u0433\u043b\u0430: \u043f\u0435\u043b\u0435\u043d\u0433\u0430\u0446\u0438\u044f<\/a><\/li><\/ul><\/li><li><a href=\"#core-components-of-a-radar-system\">\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b<\/a><\/li><li><a href=\"#types-of-radar-systems\">\u0422\u0438\u043f\u044b \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c<\/a><ul><li><a href=\"#by-architecture\">\u041f\u043e \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435<\/a><\/li><li><a href=\"#by-waveform\">\u041f\u043e \u0444\u043e\u0440\u043c\u0435 \u0441\u0438\u0433\u043d\u0430\u043b\u0430<\/a><\/li><li><a href=\"#by-frequency-band\">\u041f\u043e \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u0443 \u0447\u0430\u0441\u0442\u043e\u0442<\/a><\/li><\/ul><\/li><li><a href=\"#surveillance-radar-watching-over-airspace\">\u0420\u0430\u0434\u0430\u0440 \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f: \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u0437\u0430 \u0432\u043e\u0437\u0434\u0443\u0448\u043d\u044b\u043c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u043e\u043c<\/a><ul><li><a href=\"#types-of-surveillance-radar\">\u0422\u0438\u043f\u044b \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0442\u0430\u043d\u0446\u0438\u0439 \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f<\/a><\/li><li><a href=\"#key-performance-metrics\">\u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0438 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438<\/a><\/li><\/ul><\/li><li><a href=\"#low-altitude-surveillance-radar-the-challenge-of-the-low-slow-and-small\">Low-Altitude Surveillance Radar: The Challenge of the &#8220;Low, Slow, and Small&#8221;<\/a><ul><li><a href=\"#what-makes-low-altitude-surveillance-different\">\u0427\u0435\u043c \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u0435 \u043d\u0430 \u043c\u0430\u043b\u043e\u0439 \u0432\u044b\u0441\u043e\u0442\u0435?<\/a><\/li><li><a href=\"#how-low-altitude-surveillance-radar-works\">\u041a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0442\u043e\u0440 \u043d\u0438\u0437\u043a\u043e\u0432\u044b\u0441\u043e\u0442\u043d\u043e\u0433\u043e \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f<\/a><\/li><li><a href=\"#advanced-low-altitude-radar-technologies\">\u041f\u0435\u0440\u0435\u0434\u043e\u0432\u044b\u0435 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u043d\u0438\u0437\u043a\u043e\u0432\u044b\u0441\u043e\u0442\u043d\u044b\u0445 \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c<\/a><\/li><\/ul><\/li><li><a href=\"#applications-of-radar-technology\">\u041e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0442\u0435\u0445\u043d\u0438\u043a\u0438<\/a><ul><li><a href=\"#defense-and-security\">\u041e\u0431\u043e\u0440\u043e\u043d\u0430 \u0438 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c<\/a><\/li><li><a href=\"#aviation-and-air-traffic-control\">\u0410\u0432\u0438\u0430\u0446\u0438\u044f \u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u043e\u0437\u0434\u0443\u0448\u043d\u044b\u043c \u0434\u0432\u0438\u0436\u0435\u043d\u0438\u0435\u043c<\/a><\/li><li><a href=\"#weather-and-environmental-monitoring\">\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u043f\u043e\u0433\u043e\u0434\u044b \u0438 \u043e\u043a\u0440\u0443\u0436\u0430\u044e\u0449\u0435\u0439 \u0441\u0440\u0435\u0434\u044b<\/a><\/li><li><a href=\"#remote-sensing-and-imaging\">\u0414\u0438\u0441\u0442\u0430\u043d\u0446\u0438\u043e\u043d\u043d\u043e\u0435 \u0437\u043e\u043d\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439<\/a><\/li><li><a href=\"#commercial-and-industrial\">Commercial and Industrial<\/a><\/li><\/ul><\/li><li><a href=\"#the-radar-range-equation-a-fundamental-tool\">The Radar Range Equation: A Fundamental Tool<\/a><\/li><li><a href=\"#radar-signal-processing-extracting-targets-from-noise\">Radar Signal Processing: Extracting Targets from Noise<\/a><ul><li><a href=\"#key-signal-processing-techniques\">Key Signal Processing Techniques<\/a><\/li><\/ul><\/li><li><a href=\"#the-enduring-importance-of-radar\">The Enduring Importance of Radar<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/stardl.com\/ru\/%d1%80%d0%b0%d0%b4%d0%b8%d0%be%d0%bb%d0%be%d0%ba%d0%b0%d1%86%d0%b8%d0%be%d0%bd%d0%bd%d1%8b%d0%b5-%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d1%8b\/\">\u0420\u0430\u0434\u0430\u0440<\/a> is a detection and ranging technology that uses transmitted electromagnetic signals and their reflected returns to determine the location, distance, velocity, and shape of objects<\/strong><a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. The word \u201cradar\u201d is an acronym for\u00a0<strong>Radio Detection And Ranging<\/strong>\u00a0\u2014 a term standardized during World War II that precisely captures what the technology does<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At its simplest, a <strong>\u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430<\/strong> works like this: it transmits radio waves, waits for them to bounce off an object, and listens for the returning echo<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. By measuring the time it takes for the signal to travel to the target and back, the radar calculates the target\u2019s distance<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. By analyzing changes in the signal\u2019s frequency, it determines the target\u2019s velocity<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. And by processing the returned signal\u2019s angle of arrival and other characteristics, it pinpoints the target\u2019s position in space<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Radar operates across frequency bands from high frequency (HF, roughly 3 MHz) through millimeter-wave (above 30 GHz), with different bands offering different trade-offs between resolution, range, and atmospheric penetration<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. The IEEE radar band designations \u2014 L, S, C, X, Ku, K, Ka, and W \u2014 define these frequency ranges, with higher frequencies supporting finer spatial resolution at the cost of greater atmospheric attenuation<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"how-radar-works-the-basic-principle\" class=\"wp-block-heading\" style=\"font-size:24px\">\u041a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0440\u0430\u0434\u0430\u0440: \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u043f\u0440\u0438\u043d\u0446\u0438\u043f<\/h2>\n\n\n\n<h3 id=\"the-transmit-reflect-receive-cycle\" class=\"wp-block-heading has-medium-font-size\">\u0426\u0438\u043a\u043b \u00ab\u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0430-\u043e\u0442\u0440\u0430\u0436\u0435\u043d\u0438\u0435-\u043f\u0440\u0438\u0435\u043c\u00bb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A radar system typically consists of five core components: a&nbsp;<strong>transmitter<\/strong>&nbsp;that generates high-frequency radio signals, an&nbsp;<strong>antenna<\/strong>&nbsp;that radiates those signals into space and captures returning echoes, a&nbsp;<strong>receiver<\/strong>&nbsp;that amplifies and processes the weak reflected signals, a&nbsp;<strong>signal processor<\/strong>&nbsp;that extracts useful information from the received echoes, and a&nbsp;<strong>display or data output<\/strong>&nbsp;that presents the results to an operator<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The basic operating cycle is straightforward:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u041f\u0435\u0440\u0435\u0434\u0430\u0442\u044c<\/strong>: The transmitter generates a high-intensity burst of radio-frequency energy, which the antenna radiates as a focused beam.<\/li>\n\n\n\n<li><strong>Reflect<\/strong>: The electromagnetic waves travel outward at the speed of light. When they encounter an object \u2014 an aircraft, a weather system, a drone, or any other target \u2014 a portion of the energy scatters or reflects back toward the radar.<\/li>\n\n\n\n<li><strong>\u041f\u043e\u043b\u0443\u0447\u0438\u0442\u044c<\/strong>: The antenna captures the returning echo, and the receiver amplifies and processes the extremely weak signal.<\/li>\n\n\n\n<li><strong>Calculate<\/strong>: The system uses the properties of the transmitted and received signals to compute range, velocity, and angle.<\/li>\n<\/ol>\n\n\n\n<h3 id=\"measuring-distance-the-range-equation\" class=\"wp-block-heading has-medium-font-size\">\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0440\u0430\u0441\u0441\u0442\u043e\u044f\u043d\u0438\u044f: \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0434\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Range is the most fundamental measurement a radar makes. The radar measures the\u00a0<strong>round-trip travel time<\/strong>\u00a0\u2014 the interval between when a pulse is transmitted and when its echo returns<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Since radio waves travel at the speed of light (approximately 300,000 kilometers per second), the distance to the target is simply:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote has-ast-global-color-4-background-color has-background is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Range = (Speed of Light \u00d7 Round-Trip Time) \/ 2<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">The division by two accounts for the fact that the signal travels to the target and back \u2014 the round-trip distance is twice the range to the target<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h3 id=\"measuring-velocity-the-doppler-effect\" class=\"wp-block-heading has-medium-font-size\">\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438: \u044d\u0444\u0444\u0435\u043a\u0442 \u0414\u043e\u043f\u043b\u0435\u0440\u0430<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Radar determines a target\u2019s velocity through the&nbsp;<strong>\u042d\u0444\u0444\u0435\u043a\u0442 \u0414\u043e\u043f\u043b\u0435\u0440\u0430<\/strong><a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. When a radar pulse strikes a moving target, the frequency of the returned wave is shifted \u2014 compressed if the target is moving toward the radar, stretched if it is moving away<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This is the same principle that causes the pitch of a passing siren to drop as it moves past you<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By measuring this&nbsp;<strong>Doppler frequency shift<\/strong>&nbsp;between the transmitted and received signals, a radar system can determine the target\u2019s radial velocity \u2014 its speed directly toward or away from the radar<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Modern weather radars and air-surveillance radars are almost all Doppler radars for this reason<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h3 id=\"measuring-angle-direction-finding\" class=\"wp-block-heading has-medium-font-size\">\u0418\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u0435 \u0443\u0433\u043b\u0430: \u043f\u0435\u043b\u0435\u043d\u0433\u0430\u0446\u0438\u044f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Radar determines a target\u2019s angular position through the direction in which the antenna is pointing when it receives the echo. In a mechanically scanned radar, the antenna rotates, and the system records the azimuth angle at the moment of the return. In a phased-array radar, the beam is steered electronically, and the system knows the beam\u2019s pointing angle at all times<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"core-components-of-a-radar-system\" class=\"wp-block-heading\" style=\"font-size:24px\">\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every radar system, regardless of its application, relies on the same fundamental building blocks<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Component<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th><\/tr><\/thead><tbody><tr><td><strong>Transmitter<\/strong><\/td><td>Generates high-frequency electromagnetic signals, typically in the form of pulses or continuous waves<\/td><\/tr><tr><td><strong>Antenna<\/strong><\/td><td>Radiates the transmitted energy into space and collects the returning echoes; may be shared between transmit and receive functions<\/td><\/tr><tr><td><strong>Receiver<\/strong><\/td><td>Amplifies and processes the extremely weak return signals, extracting them from noise<\/td><\/tr><tr><td><strong>Signal Processor<\/strong><\/td><td>Performs mathematical operations \u2014 matched filtering, pulse compression, Doppler processing, and target detection \u2014 to extract useful information<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><tr><td><strong>Display\/Output<\/strong><\/td><td>Presents the processed data to operators or feeds it into automated systems<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In a&nbsp;<strong>pulsed radar<\/strong>, the transmitter sends out very brief pulses of radio waves rather than a continuous stream<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. The radar spends the vast majority of its time listening for returns \u2014 in a typical weather radar, for example, the transmitter is active for only about 7 seconds per hour; the remaining 59 minutes and 53 seconds are spent listening<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In a&nbsp;<strong>continuous-wave (CW) radar<\/strong>, the transmitter operates continuously, and separate transmit and receive antennas are required to prevent the powerful transmitted signal from overwhelming the sensitive receiver<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Frequency-modulated continuous-wave (FMCW) radars add a frequency ramp to the transmitted signal, enabling range measurement alongside Doppler velocity<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"types-of-radar-systems\" class=\"wp-block-heading\" style=\"font-size:24px\">\u0422\u0438\u043f\u044b \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Radar systems come in many configurations, each optimized for different missions and environments<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<h3 id=\"by-architecture\" class=\"wp-block-heading has-medium-font-size\">\u041f\u043e \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Monostatic Radar<\/strong>: Uses a single antenna for both transmission and reception, switching between the two functions with a transmit-receive switch that protects the receiver during the high-power transmit interval<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This is the most common radar architecture.<\/li>\n\n\n\n<li><strong>Bistatic Radar<\/strong>: Separates the transmitter and receiver by a significant distance<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This geometry complicates signal processing but offers advantages in survivability and the ability to exploit \u201cilluminators of opportunity\u201d \u2014 existing transmitters such as broadcast or communication signals.<\/li>\n\n\n\n<li><strong>Phased-Array Radar<\/strong>: Replaces a mechanically rotating dish with a stationary aperture of electronically steerable elements<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. By adjusting the phase of the signal at each element, the beam can be steered almost instantaneously in any direction. This permits simultaneous tracking of many targets and rapid beam repositioning<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Active Electronically Scanned Array (AESA) radars are a key example of this technology.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"by-waveform\" class=\"wp-block-heading has-medium-font-size\">\u041f\u043e \u0444\u043e\u0440\u043c\u0435 \u0441\u0438\u0433\u043d\u0430\u043b\u0430<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pulsed Radar<\/strong>: Transmits short, high-intensity pulses and listens for returns between pulses<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Most surveillance and tracking radars use pulsed waveforms.<\/li>\n\n\n\n<li><strong>Continuous-Wave (CW) Radar<\/strong>: Transmits continuously and requires separate transmit and receive antennas<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. CW radars excel at velocity measurement but cannot measure range unless frequency modulation is added.<\/li>\n\n\n\n<li><strong>Frequency-Modulated Continuous-Wave (FMCW) Radar<\/strong>: Combines continuous transmission with frequency modulation to extract both range and velocity information<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. FMCW radars are common in automotive and short-range sensing applications.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"by-frequency-band\" class=\"wp-block-heading has-medium-font-size\">\u041f\u043e \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u0443 \u0447\u0430\u0441\u0442\u043e\u0442<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Band<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u0414\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u0447\u0430\u0441\u0442\u043e\u0442<\/th><th class=\"has-text-align-left\" data-align=\"left\">Common Applications<\/th><\/tr><\/thead><tbody><tr><td>HF<\/td><td>3\u201330 MHz<\/td><td>Over-the-horizon radar<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><tr><td>UHF\/L-band<\/td><td>0.3\u20132 GHz<\/td><td>Long-range surveillance, space-object tracking<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><tr><td>S-band<\/td><td>2\u20134 GHz<\/td><td>Weather surveillance, ship navigation, airport surveillance radar<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><tr><td>C-band<\/td><td>4\u20138 GHz<\/td><td>Airborne weather radar, synthetic aperture radar<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><tr><td>X-\u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d<\/td><td>8\u201312 GHz<\/td><td>Fire control, maritime navigation, automotive sensing, low-altitude surveillance<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><a href=\"https:\/\/isprs-archives.copernicus.org\/articles\/XLIX-B1-2026\/505\/2026\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><tr><td>Ku\/K\/Ka-band<\/td><td>12\u201340 GHz<\/td><td>High-resolution imaging, satellite communications<\/td><\/tr><tr><td>\u041c\u0438\u043b\u043b\u0438\u043c\u0435\u0442\u0440\u043e\u0432\u044b\u0439 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d<\/td><td>&gt;30 GHz<\/td><td>Short-range automotive radar, high-resolution imaging<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Higher frequency bands offer finer spatial resolution but suffer greater atmospheric attenuation. Lower frequency bands penetrate weather and vegetation more effectively but provide coarser resolution<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"surveillance-radar-watching-over-airspace\" class=\"wp-block-heading\" style=\"font-size:24px\">\u0420\u0430\u0434\u0430\u0440 \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f: \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u0437\u0430 \u0432\u043e\u0437\u0434\u0443\u0448\u043d\u044b\u043c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u043e\u043c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Surveillance radar<\/strong>&nbsp;is a category of radar systems designed for the continuous monitoring of airspace, ground areas, or maritime regions to detect and track objects of interest. Unlike tracking radar, which follows individual targets in detail, surveillance radar maintains a broad picture of an area and detects new targets as they appear.<\/p>\n\n\n\n<h3 id=\"types-of-surveillance-radar\" class=\"wp-block-heading has-medium-font-size\">\u0422\u0438\u043f\u044b \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0442\u0430\u043d\u0446\u0438\u0439 \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Air Surveillance Radar<\/strong>&nbsp;is designed for early warning, land and maritime surveillance, detecting fixed-wing aircraft, helicopters, and remotely piloted vehicles. These radars are typically long-range systems that provide a comprehensive picture of air activity in a region.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Airport Surveillance Radar (ASR)<\/strong>&nbsp;monitors air traffic within the vicinity of an airport, typically operating at S-band. ASR systems help air traffic controllers manage arrivals, departures, and en-route traffic safely.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ground Surveillance Radar<\/strong>&nbsp;monitors ground movement for border security, perimeter protection, and critical infrastructure monitoring. These systems can detect personnel, vehicles, and low-flying aircraft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Airborne and Space-Based Surveillance Radar<\/strong>&nbsp;takes advantage of extremely large fields of view from elevated platforms. These include Airborne Early Warning (AEW) systems and Space-Based Radars (SBR).<\/p>\n\n\n\n<h3 id=\"key-performance-metrics\" class=\"wp-block-heading has-medium-font-size\">\u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0438 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Surveillance radar performance is assessed through several linked metrics<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u0430\u044f \u0434\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f<\/strong>: Determined by the radar range equation, which balances transmitted power, antenna gain, target radar cross-section (RCS), receiver noise, and required signal-to-noise ratio<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/li>\n\n\n\n<li><strong>\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043f\u043e \u0434\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438<\/strong>: Equal to the speed of light divided by twice the waveform bandwidth; this sets the minimum separation between two distinguishable targets along the radial direction<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/li>\n\n\n\n<li><strong>Cross-Range Resolution<\/strong>: Determined by the antenna beamwidth and the target&#8217;s range; for a given antenna size, higher frequencies (shorter wavelengths) provide finer cross-range resolution<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/li>\n\n\n\n<li><strong>Update Rate<\/strong>: How frequently the radar completes a full scan of its coverage volume; faster update rates improve track continuity but may reduce sensitivity<a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"low-altitude-surveillance-radar-the-challenge-of-the-low-slow-and-small\" class=\"wp-block-heading\" style=\"font-size:24px\">Low-Altitude Surveillance Radar: The Challenge of the &#8220;Low, Slow, and Small&#8221;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Low-altitude surveillance radar<\/strong>&nbsp;is a specialized category of radar designed to keep watch over low-altitude airspace \u2014 the domain below typical air-traffic control radar coverage where drones, low-flying aircraft, cruise missiles, and other threats operate<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h3 id=\"what-makes-low-altitude-surveillance-different\" class=\"wp-block-heading has-medium-font-size\">\u0427\u0435\u043c \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u0435 \u043d\u0430 \u043c\u0430\u043b\u043e\u0439 \u0432\u044b\u0441\u043e\u0442\u0435?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Low-altitude surveillance presents unique challenges that distinguish it from traditional air-surveillance radar:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>First, the targets are often small.<\/strong>&nbsp;A consumer drone has a radar cross-section (RCS) of only 0.01 to 0.02 square meters \u2014 comparable to a large bird and far smaller than an aircraft. Detecting such small targets requires high sensitivity and sophisticated signal processing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Second, the environment is cluttered.<\/strong>&nbsp;Ground clutter \u2014 reflections from buildings, terrain, trees, and vehicles \u2014 can easily mask the weak returns from low-flying targets. Urban environments are particularly challenging due to the density of reflectors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Third, the targets are slow and maneuverable.<\/strong>&nbsp;Low-altitude targets can change speed and direction rapidly, making them difficult to track with traditional radar algorithms.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Fourth, the timeline is compressed.<\/strong>&nbsp;Because low-altitude flight occurs close to protected assets, the time between detection and the target reaching its objective is often measured in seconds, not minutes<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Traditional automatic target recognition approaches \u2014 which rely on track accumulation \u2014 can introduce detection response times exceeding 3\u20135 seconds<a href=\"https:\/\/isprs-archives.copernicus.org\/articles\/XLIX-B1-2026\/505\/2026\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Emerging tracking-free ATR methodologies are reducing this to below 100 milliseconds<a href=\"https:\/\/isprs-archives.copernicus.org\/articles\/XLIX-B1-2026\/505\/2026\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h3 id=\"how-low-altitude-surveillance-radar-works\" class=\"wp-block-heading has-medium-font-size\">\u041a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0442\u043e\u0440 \u043d\u0438\u0437\u043a\u043e\u0432\u044b\u0441\u043e\u0442\u043d\u043e\u0433\u043e \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A low-altitude surveillance radar performs several critical functions<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Detection<\/strong>: The radar scans a defined airspace and searches for moving objects of interest. Unlike cameras, radar does not depend on visible light and does not need to know where to look before it starts searching<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tracking<\/strong>: The radar associates repeated detections over time and turns them into continuous tracks. A track shows range, bearing, height, speed, direction, and recent history<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Tracks are more useful than isolated detections because a single point could be noise, a bird, or an environmental reflection<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alerting<\/strong>: The radar is combined with geofences, warning zones, exclusion zones, and behavioral rules. The system may raise an alert only when a target enters a specific zone, approaches from a sensitive direction, or continues toward a protected asset<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Effective alert logic and false-alarm control are often more important than maximum range specifications<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sensor Cueing<\/strong>: Radar is strong at search and tracking, but it does not visually identify the target. Low-altitude surveillance radar typically cues EO\/IR cameras, visible-light video, thermal imaging, or RF detection systems to confirm the target&#8217;s identity<a href=\"https:\/\/www.counteruavradar.com\/en\/knowledge-base\/what-does-low-altitude-surveillance-radar-do\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h3 id=\"advanced-low-altitude-radar-technologies\" class=\"wp-block-heading has-medium-font-size\">\u041f\u0435\u0440\u0435\u0434\u043e\u0432\u044b\u0435 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u043d\u0438\u0437\u043a\u043e\u0432\u044b\u0441\u043e\u0442\u043d\u044b\u0445 \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modern low-altitude surveillance radars employ several advanced technologies<a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Digital Array Technology<\/strong>: Replaces analog beamforming with digital control of each antenna element, enabling more flexible beam patterns and improved clutter rejection<a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Software-Defined Radar<\/strong>: Uses programmable signal processing to adapt radar behavior to changing environments and threats<a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cognitive MIMO Radar<\/strong>: Uses multiple-input multiple-output techniques with cognitive processing to observe multiple targets simultaneously and adapt to the environment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Advanced Clutter Suppression<\/strong>: Employs sophisticated algorithms \u2014 including moving target indication (MTI), moving target detection (MTD), and constant false-alarm rate (CFAR) processing \u2014 to distinguish targets from background clutter<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tracking-Free Automatic Target Recognition<\/strong>: A new paradigm that restructures the conventional \u201cDetection\u2013Tracking\u2013Recognition\u201d chain into a parallel \u201cIntegrated Detection and Recognition\u201d architecture, achieving detection response times below 100 milliseconds \u2014 more than an order of magnitude faster than traditional systems<a href=\"https:\/\/isprs-archives.copernicus.org\/articles\/XLIX-B1-2026\/505\/2026\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Field trials using X-band radar have demonstrated reliable identification of VTOL aircraft at ranges exceeding 12 km<a href=\"https:\/\/isprs-archives.copernicus.org\/articles\/XLIX-B1-2026\/505\/2026\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"applications-of-radar-technology\" class=\"wp-block-heading\" style=\"font-size:24px\">\u041e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0442\u0435\u0445\u043d\u0438\u043a\u0438<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Radar technology has expanded far beyond its military origins into a vast array of civilian and commercial applications<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<h3 id=\"defense-and-security\" class=\"wp-block-heading has-medium-font-size\">\u041e\u0431\u043e\u0440\u043e\u043d\u0430 \u0438 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Air surveillance and early warning<\/strong>\u00a0\u2014 detecting and tracking aircraft, missiles, and drones<\/li>\n\n\n\n<li><strong>Border and perimeter security<\/strong>\u00a0\u2014 monitoring ground movement and low-altitude airspace<\/li>\n\n\n\n<li><strong>Weapon locating and fire control<\/strong>\u00a0\u2014 tracking artillery, mortar, and missile trajectories<\/li>\n\n\n\n<li><strong>Anti-stealth detection<\/strong>\u00a0\u2014 using low-frequency bands to detect radar-evading aircraft<a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Counter-UAV systems<\/strong>\u00a0\u2014 detecting, tracking, and cueing countermeasures against drones<a href=\"https:\/\/www.globalsecurity.org.globalsecurity.org\/wmd\/library\/news\/china\/2025\/05\/china-250519-globaltimes02.htm\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n<\/ul>\n\n\n\n<h3 id=\"aviation-and-air-traffic-control\" class=\"wp-block-heading has-medium-font-size\">\u0410\u0432\u0438\u0430\u0446\u0438\u044f \u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u043e\u0437\u0434\u0443\u0448\u043d\u044b\u043c \u0434\u0432\u0438\u0436\u0435\u043d\u0438\u0435\u043c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Airport surveillance<\/strong>\u00a0\u2014 managing arrivals, departures, and en-route traffic<\/li>\n\n\n\n<li><strong>Airborne weather avoidance<\/strong>\u00a0\u2014 detecting hazardous weather for flight safety<\/li>\n\n\n\n<li><strong>Ground-penetrating and foliage-penetrating radar<\/strong>\u00a0\u2014 for search and rescue, disaster response<\/li>\n<\/ul>\n\n\n\n<h3 id=\"weather-and-environmental-monitoring\" class=\"wp-block-heading has-medium-font-size\">\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u043f\u043e\u0433\u043e\u0434\u044b \u0438 \u043e\u043a\u0440\u0443\u0436\u0430\u044e\u0449\u0435\u0439 \u0441\u0440\u0435\u0434\u044b<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Weather surveillance<\/strong>\u00a0\u2014 detecting precipitation, wind shear, and storm structure<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Dual-polarization weather radar<\/strong>\u00a0\u2014 distinguishing rain, hail, snow, and ice pellets<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Tornado and severe weather detection<\/strong>\u00a0\u2014 identifying debris balls and rotation signatures<a href=\"https:\/\/www.noaa.gov\/es\/node\/10859\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n<\/ul>\n\n\n\n<h3 id=\"remote-sensing-and-imaging\" class=\"wp-block-heading has-medium-font-size\">\u0414\u0438\u0441\u0442\u0430\u043d\u0446\u0438\u043e\u043d\u043d\u043e\u0435 \u0437\u043e\u043d\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Synthetic Aperture Radar (SAR)<\/strong>\u00a0\u2014 producing high-resolution images from airborne or spaceborne platforms<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Three-dimensional imaging radar<\/strong>\u00a0\u2014 extracting elevation information and creating digital elevation models<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Ground-penetrating radar<\/strong>\u00a0\u2014 subsurface mapping and detection<\/li>\n<\/ul>\n\n\n\n<h3 id=\"commercial-and-industrial\" class=\"wp-block-heading has-medium-font-size\">Commercial and Industrial<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Automotive radar<\/strong>\u00a0\u2014 adaptive cruise control, collision avoidance, autonomous driving<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Maritime navigation<\/strong>\u00a0\u2014 collision avoidance, harbor surveillance<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/li>\n\n\n\n<li><strong>Industrial sensing<\/strong>\u00a0\u2014 level measurement, presence detection, process control<\/li>\n<\/ul>\n\n\n\n<h2 id=\"the-radar-range-equation-a-fundamental-tool\" class=\"wp-block-heading\" style=\"font-size:24px\">The Radar Range Equation: A Fundamental Tool<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The radar range equation is the fundamental tool that engineers use to predict and understand radar performance<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pr = Pt \u00d7 Gt \u00d7 Gr \u00d7 \u03c3 \u00d7 \u03bb\u00b2 \/ ( (4\u03c0)\u00b3 \u00d7 R\u2074 )<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pr<\/strong>\u00a0= received power<\/li>\n\n\n\n<li><strong>Pt<\/strong>\u00a0= transmitted power<\/li>\n\n\n\n<li><strong>Gt<\/strong>\u00a0= transmit antenna gain<\/li>\n\n\n\n<li><strong>Gr<\/strong>\u00a0= receive antenna gain<\/li>\n\n\n\n<li><strong>\u03c3<\/strong>\u00a0= target radar cross-section (RCS)<\/li>\n\n\n\n<li><strong>\u03bb<\/strong>\u00a0= wavelength<\/li>\n\n\n\n<li><strong>R<\/strong>\u00a0= range to the target<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The equation reveals a critical insight:\u00a0<strong>received power decreases with the fourth power of range<\/strong>\u00a0(R\u2074). Doubling the range reduces the received signal by a factor of 16<a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This is why <a href=\"https:\/\/stardl.com\/ru\/%d1%80%d0%b0%d0%b4%d0%b8%d0%be%d0%bb%d0%be%d0%ba%d0%b0%d1%86%d0%b8%d0%be%d0%bd%d0%bd%d1%8b%d0%b5-%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d1%8b\/\">\u0440\u0430\u0434\u0438\u043e\u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b<\/a> require enormous transmitted power and sensitive receivers to achieve long detection ranges.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u042d\u0442\u043e\u0442&nbsp;<strong>radar cross-section (\u03c3)<\/strong>&nbsp;is a measure of a target&#8217;s effective scattering area at the radar&#8217;s operating frequency<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. RCS depends on target size, shape, material properties, and the angle of incidence, and it can vary by many orders of magnitude for the same physical object viewed from different aspects<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This variability makes detection of small or stealthy targets \u2014 such as drones \u2014 particularly challenging<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"radar-signal-processing-extracting-targets-from-noise\" class=\"wp-block-heading\" style=\"font-size:24px\">Radar Signal Processing: Extracting Targets from Noise<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Raw radar returns contain not only target echoes but also receiver noise, ground clutter, weather returns, and interference.&nbsp;<strong>Signal processing<\/strong>&nbsp;is the discipline of extracting useful target information from this noisy data<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h3 id=\"key-signal-processing-techniques\" class=\"wp-block-heading has-medium-font-size\">Key Signal Processing Techniques<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Matched Filtering<\/strong>&nbsp;correlates the received signal against a template of the transmitted waveform to maximize signal-to-noise ratio before any detection decision is made<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This is the optimal linear processor for detecting known signals in white noise.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pulse Compression<\/strong>&nbsp;modulates the transmitted pulse and then compresses the return, allowing a radar to achieve the range resolution of a short pulse while transmitting the energy of a long pulse<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. This resolves the fundamental trade-off between range resolution and detection range.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Constant False-Alarm Rate (CFAR) Processing<\/strong>&nbsp;adapts the detection threshold dynamically to local clutter statistics, preserving detection performance as background conditions change across a scan<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Moving Target Indication (MTI)<\/strong>&nbsp;\u0438&nbsp;<strong>Moving Target Detection (MTD)<\/strong>&nbsp;use Doppler processing to distinguish moving targets from stationary clutter. These techniques are essential for detecting targets in ground-clutter environments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Doppler Processing<\/strong>&nbsp;extracts velocity information from the frequency shift between transmitted and received signals, enabling the radar to determine target speed and direction<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<h2 id=\"the-enduring-importance-of-radar\" class=\"wp-block-heading\" style=\"font-size:24px\">The Enduring Importance of Radar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Radar has evolved dramatically since its origins in the 1930s, but its fundamental purpose remains unchanged:&nbsp;<strong>to extend human perception beyond the limits of sight<\/strong><a href=\"https:\/\/technav.ieee.org\/topic\/radar-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>. Whether watching for weather, guiding aircraft, tracking missiles, or protecting critical infrastructure from drone threats, radar systems provide the situational awareness that modern life and security depend on<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At STARDL, we understand that radar is not a single technology but a diverse family of sensing solutions \u2014 each optimized for a specific mission, environment, and set of constraints. From the RF semiconductors that power the front end<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>&nbsp;to the advanced signal processing that extracts targets from noise<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>, every component of a radar system must work in harmony to deliver reliable detection and tracking<a href=\"https:\/\/technav.ieee.org\/topic\/radar\/\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Radar is a detection and ranging technology that uses transmitted electromagnetic signals and their reflected returns to determine the location, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6700,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[86],"tags":[476,474,435,475,473],"class_list":["post-6699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-documentation","tag-doppler-radar","tag-low-altitude-surveillance","tag-radar-systems","tag-radar-types","tag-surveillance-radar"],"_links":{"self":[{"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/posts\/6699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/comments?post=6699"}],"version-history":[{"count":2,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/posts\/6699\/revisions"}],"predecessor-version":[{"id":6702,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/posts\/6699\/revisions\/6702"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/media\/6700"}],"wp:attachment":[{"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/media?parent=6699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/categories?post=6699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stardl.com\/ru\/wp-json\/wp\/v2\/tags?post=6699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}