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针对机载雷达近程杂波抑制提出了一种高效俯仰向空域自适应处理算法。该算法从雷达系统设计出发,在每一次相干积累时间内采用仅包含近程杂波的第一个填零脉冲为训练样本。同时,在俯仰向进行降维处理形成和、差波束,并基于旁瓣相消原理利用俯仰差波束自适应对消和波束中的近程杂波。理论分析和仿真结果表明,本文方案能高效滤除近程杂波,且俯仰主波束保形性能好,运算量小,适合工程应用。
Aiming at the short-range clutter suppression of airborne radar, an efficient pitch-to-space adaptive processing algorithm is proposed. Based on the radar system design, the algorithm uses the first zero-fill pulse containing only the short-range clutter as training samples in each coherent accumulation time. At the same time, the dimensionality reduction processing is performed in the elevation direction to form the sum and difference beams, and the use of the pitch difference beam adaptive cancellation and short-range clutter in the beam based on the sidelobe cancellation principle. The theoretical analysis and simulation results show that the proposed scheme can effectively filter short-range clutter, and the main beam of pitch pitch has good shape-preserving performance and low computational complexity, which is suitable for engineering application.