Range Ambiguity Clutter Suppression for Airborne Radar Based on Frequency Diverse Array
Wang Wei-wei① Wu Sun-yong② Xu Jing-wei③ Yang Xiao-chao①
①(China Academy of Space Technology-Xi’an, Xi’an 710100, China) ②(Department of Computational Science and Mathematics, Guilin University of Electronic Technology, Guilin 541004, China) ③(National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China)
Focusing on the range ambiguity of the moving target in airborne radar system, a novel Space-Time Adaptive Processing (STAP) approach based on frequency diverse array configuration is proposed for range ambiguous clutter suppression. In the proposed method, the controllable degree-of-freedom is exploited, which is introduced by the frequency diverse. The range ambiguity number is incorporated into the steering vector of the target signal. By separating the different range ambiguous range region in the spatial frequency domain, the target can be detected separately within each range region and thus range ambiguity can be resolved. By using the proposed method, giving only one pulse repetition frequency, the moving target can be detected and the range ambiguity can be resolved simultaneously, which improves the performance of airborne radar evidently. Simulation results demonstrate the effectiveness of the proposed method.
王伟伟,吴孙勇,许京伟,杨晓超. 基于频率分集阵列的机载雷达距离模糊杂波抑制方法[J]. 电子与信息学报, 2015, 37(10): 2321-2327.
Wang Wei-wei, Wu Sun-yong, Xu Jing-wei, Yang Xiao-chao. Range Ambiguity Clutter Suppression for Airborne Radar Based on Frequency Diverse Array. JEIT, 2015, 37(10): 2321-2327.
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