相控阵测量雷达跟踪起伏动目标精度分析

目标不同的航路及其运动特点对雷达测量数据质量影响很大.为了估算整个航路目标动态定位精度,依雷达测量目标工作原理,给出航路分段处理原则.对雷达测量数据与GPS测量真值比对的一次差,提出了基于三次B样条的雷达系统误差分离方法.通过处理某飞行任务的大量测量数据,估算出了不同航路的雷达动态测距、测角系统误差和随机误差.结果表明,雷达测距系统误差与斜距成正比；测角系统误差为设计指标的2倍多；其随机误差与设计指标相符.

Accuracy Analysis of Phased-Array Measurement Radar Tracking Undulate Target

Different voyage routes and moving characteristics of a target can significantly affect data quality measured by radar.According to the target tracking principle of phased-array radar,a whole voyage route is divided into segments,such as straight lines and curves,to be processed for target position accuracy estimation.Based on the cubic B-spline function,an errors separation method for radar system is proposed to identify the difference between radar measured values and true values.The system errors and random errors of radar range,azimuth and elevation in different segments are estimated for many flight tasks.The result shows that the dynamic system error of radar range is directly proportional to range,angle system errors are two times of their specifications,and random errors are consistent with their accuracies.