雷达低空目标俯仰角跟踪的C2算法研究

C2 Algorithm Research for Radar Low-Altitude Target Elevation Tracking

摘要:

在单脉冲测角体制下,由于多径回波信号的干扰,极大地降低了雷达低空目标仰俯角跟踪精度,甚至丢失目标。通过对多路径反射环境模型分析,得出了岸、海基单脉冲雷达低空目标跟踪时仰俯角测量误差的产生原因,提出将传统的多目标分辨算法(C2算法)应用于低角多径环境下目标俯仰角的跟踪测量,并在不同多径反射环境下对不同高度、不同飞行速度和飞行方向的目标进行了仿真,得到良好的仿真结果,表明该算法可较大地提高俯仰角跟踪测量精度。通过对仿真结果的分析,验证了该算法在低空目标跟踪中的有效性和可行性。

Abstract:

Measuring a low altitude target in elevation is difficult both direct and reflected returns originate in the main beam of the radar. This paper deals with the measurement error of elevation of low-altitude target tracking with monopulse radar in the presence of multipath, which degrades the tracking algorithm greatly. By means of the analysis based on the model of multipath reflection environment, a novel idea is put forward that using the traditional multi-target discrimination algorithm (C2) to estimate the elevation angle of the low-altitude target. Throughout the simulation in some scenarios it is shown that the method is effective and feasible for tracking the target in low-altitude and multipath environment.