摘要
由于多径回波信号的干扰,严重影响了单脉冲测角体制雷达对低仰角目标俯仰角的测量,并使其对低仰角目标俯仰角的闭环跟踪测量实现极为困难;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,得出了单脉冲雷达低仰角跟踪时俯仰角测量误差的产生原因,用传统的多目标分辨算法(C^2算法)弥补偏差补偿算法在目标飞行高度很低(5 m以下)时和距离近时补偿效果较差的不足;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,可较大地提高低仰角目标偏轴跟踪俯仰角的测量精度。
In the presence of sea surface multi-path, monopulse radar measure a low elevation target is difficult. So off-axis tracking technique was adopted. By means of the analysis based on the model of multi-path reflection environment. Expression for the average bias in the mono pulse ratio due to specular and diffuse reflections and the noise in the radar channel are derived, algorithm combine with bias compensation to adapts for measurement extraction the elevation. The results of simulation indicate it can improve the precision of low-altitude target elevation measurement in of Laxis tracking radar system.
出处
《计算机测量与控制》
CSCD
2008年第12期1890-1892,1902,共4页
Computer Measurement &Control
关键词
低仰角
多径干扰
偏轴跟踪
偏差补偿算法
仿真
low angle multi-path jamming off axis tracking bias compensation algorithm computer simulation
