冲激雷达标量脱靶量测量算法研究

提出了一种基于冲激雷达体制的单通道标量脱靶量测量的新方法.该方法通过距离门对雷达回波数据进行等效采样,利用距离门间采样数据的相关得到目标散射点通过各距离门的相对时间,在此基础上利用脱靶量测量参数的几何关系,将脱靶量测量表示为距离门所对应距离和相对时间的最小二乘拟合问题,并得出标量脱靶量参数的最优估计.在对冲激雷达系统及匀速直线运动目标弹道建模的基础上进行仿真,结果表明测量误差小于标量脱靶量的5%,算法具有比多普勒方法更高的精度和稳定性.

Research on Measurement Algorithm of Scalar Miss Distance Based on Impulse Radar

A new miss distance measurement method based on impulse radar system with one receiving antenna was presented. The radar system samples the return signal equivalently by using range gates. According to correlation of sampling data between different range gates, the relative time when point scatters pass range gates was obtained. The measurement was expressed as the least square fitting of range and time by the geometrical relation of miss distance parameters. The best estimated result of miss distance parameters was achieved. By modeling the radar syetem and trajectory in condition of uniform and rectilinear motion, simulation results show that the measurement error is less than 5% of scalar miss distance. Compared with Doppler measurement, the algorithm has higher precision and stability.