雷达低空目标闭环跟踪的C2-偏差补偿算法研究

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俯仰角测量精度.通过对多路径反射环境模型分析,同时考虑镜面反射和漫反射的干扰,得出了岸、海基单脉冲雷达低空目标跟踪时俯仰角测量误差的产生原因,将传统的多目标分辨算法(C2算法)与偏差补偿技术相结合应用于低角多径环境下目标俯仰角的测量,弥补两种算法各自的不足.在给定的测量环境下对不同高度目标进行了仿真,得到良好的仿真结果,表明两种算法结合使用,可较大地提高低空目标俯仰角的测量精度.

Research of C2-bias compensation algorithm for Radar Low-Altitude Target Elevation Measurement

In the presence of sea-surface multi-path mono-pulse radar measure a low elevation target is difficulty.By means of the analysis based on the model of multi-path reflection environment,both specular reflection and diffuse reflection are considered.Expres- sion for the average bias in the mono-pulse ratio due to specular and diffuse reflections and the noise in the radar channel are derived. C~2 algorithm combine with bias compensation to adapts for measurement extraction the elevation in presence of sea-surface multi-path, which can improve the disadvantage of all both technology.Throughout the simulation in some scenarios shows combine with both algo- rithm is effective and feasible for tracking the target in low-altitude and multi-path environment.The result of simulation indicates it can improve the precision of elevation measurement.