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距离高分辨体制下,目标在雷达视在径向距离上扩展成多个散射点,对其进行检测需将目标分散的能量进行积累。本文将自适应单周期径向积累检测与中心极限定理相结合,推导出了在K分布杂波背景下的检测器结构,并详细分析了其统计特性。该检测器一方面不仅对目标强散射点分布有较强的适应性,而且在杂波参数变化时具有可以接受的检测性能,另一方面避开了滑窗处理及K分布杂波形状因子的计算,结构简单,易于实现。仿真结果证明了该检测器的可行性和鲁棒性。
Under the high resolution system, the target expands to a plurality of scattering points in the radial distance of radar apparent, and the detection of the target needs to accumulate the dispersed energy of the target. In this paper, the self-adaptive single-cycle radial accumulation detection and the central limit theorem are combined to deduce the detector structure in the background of K-distribution clutter and analyze its statistical characteristics in detail. The detector not only has strong adaptability to the strong scatter point distribution of the target but also has acceptable detection performance when the clutter parameters change, and on the other hand avoids the sliding window processing and K distribution clutter shape factor Calculation, simple structure, easy to implement. The simulation results prove the feasibility and robustness of this detector.