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BLIND SPEED ELIMINATION FOR DUAL DISPLACED PHASE CENTER ANTENNA RADAR PROCESSOR MOUNTED ON A MOVING PLATFORM
BLIND SPEED ELIMINATION FOR DUAL DISPLACED PHASE CENTER ANTENNA RADAR PROCESSOR MOUNTED ON A MOVING PLATFORM
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机译:安装在移动平台上的双位移相中心天线雷达处理器的盲速度消除
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摘要
BLIND SPEED ELIMINATION FOR DUAL DISPLACED PHASE CENTER ANTENNA RADAR PROCESSOR MOUNTED ON A MOVING PLATFORM Of The Invention A radar system mounted on a moving vehicle uses a displaced phase center antenna (DPCA) and associated processing for taking the difference between the two signals received by the displaced antennas to provide moving target indication (MTI) by cancellation of the returns from stationary targets. The presence of moving targets is identified by threshold processing within discrete frequency bands. DPCA processing ordinarily results in amplitude nulls or "blind speeds" for targets moving at particular radial velocities. According to the invention, the two signals received by the displaced antennas are summed, weighted and divided into frequency bands which extend through the expected null region in a form of Doppler processing. Threshold processing is performed on DPCA processed signals within certain frequency bands outside of the null regions and on Doppler processed signals within other frequency bands, thereby substantially eliminating the blind speeds.
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