Low-probability-of-intercept radar
http://dbpedia.org/resource/Low-probability-of-intercept_radar
A low-probability-of-intercept radar (LPIR) is a radar employing measures to avoid detection by passive radar detection equipment (such as a radar warning receiver (RWR), or electronic support receiver) while it is searching for a target or engaged in target tracking. This characteristic is desirable in a radar because it allows finding and tracking an opponent without alerting them to the radar's presence. This also protects the radar installation from anti-radiation missiles (ARMs). LPI measures include:
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Low-probability-of-intercept radar
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A low-probability-of-intercept radar (LPIR) is a radar employing measures to avoid detection by passive radar detection equipment (such as a radar warning receiver (RWR), or electronic support receiver) while it is searching for a target or engaged in target tracking. This characteristic is desirable in a radar because it allows finding and tracking an opponent without alerting them to the radar's presence. This also protects the radar installation from anti-radiation missiles (ARMs). LPI measures include:
* Power management and high duty cycle, meaning the transmitter is on most of the time (long integration times)
* Wide bandwidth (or Ultra-wideband)
* Frequency Agility, and frequency selection
* Advanced/irregular scan patterns
* Coded pulses (coherent detection)
* High processing gain
* Low sidelobe antennas
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10237