Research on Range Migration Compensation Algorithm in Space Time Processing for Airborne Passive Radar
YANG Pengcheng①②③ LÜ Xiaode①② ZHANG Dan①②③ CHAI Zhihai①②③
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(National Key Laboratory of Science and Technology on Microwave Imaging, Beijing 100190, China) ③(University of Chinese Academy of Sciences, Beijing 100049, China)
Space time processing is an effective method for the suppression of clutters and the power integration of target echo for airborne passive radar. However, it needs long Coherent Processing Intervals (CPI) to improve target Signal-to-Noise Ratio (SNR) because of the weak target in passive radar, which leads to range migration and integration loss, and then lowers the system performance. Focusing on this problem, a range migration compensation algorithm is proposed, which combines Keystone transform with 3DT-SAP algorithm perfectly. This algorithm is efficient in computation and owns the potential for real time implementation. In addition, it can compensate the range migration with little power loss at the same time of clutter suppression. Simulations show that the proposed algorithm compensates the range migration of targets with different velocities and different powers effectively when suppressing clutters fully, which means it is an efficient and high-performance range migration compensation algorithm for airborne passive radar.
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YANG Pengcheng, Lü Xiaode, ZHANG Dan, CHAI Zhihai. Research on Range Migration Compensation Algorithm in Space Time Processing for Airborne Passive Radar. JEIT, 2016, 38(12): 3230-3237.
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