一种基于优化多普勒滤波器组的海杂波抑制技术

A Sea Clutter Suppression Technology Based on Optimized Doppler Filter Bank

在船用雷达对空探测中,海杂波往往对微弱目标检测造成严重的干扰。因此,海杂波抑制性能已经成为评判船用警戒雷达性能优劣的重要指标,尤其是杂波强度大于目标的情况下,会降低对运动目标的检测能力。针对这一问题,引入了基于优化多普勒滤波器组的海杂波抑制技术。与传统的超低副瓣多普勒滤波器组相比,在多普勒盲区不展宽的条件下,在零多普勒频率附近的响应更佳。数据仿真结果证明了这种技术的可行性和有效性。

In the air detection of marine radar,sea clutter often causes serious interference to the detection of weak targets.Therefore,the performance of sea clutter suppression has become an important index to judge the performance of marine warning radar,especially in the condition that the clutter intensity is greater than that of the target,the detection ability of moving target will be reduced.To solve this problem,this paper introduces the sea clutter suppression technology based on the optimized Doppler filter bank.Compared with the traditional ultra-low sidelobe Doppler filter bank,the response around zero Doppler frequency is better when the Doppler blind area isn’t broadened.Data simulation results demonstrate the feasibility and effectiveness of this technology.