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对低仰角跟踪,多路径误差是雷达跟踪目标误差来源中不可不考虑的部分。针对在低空跟踪情形下对目标速度测量误差的估算需要,结合多路径模型和雷达俯仰角跟踪原理,利用多路径干涉效应下的俯仰变化关系仿真得出了Y向目标跟踪速度测量误差与目标斜距的关系。仿真结果表明,Y向目标跟踪速度测量误差与实际校飞的数据基本吻合。
For low-elevation tracking, multipath errors are the unavoidable part of the radar’s target tracking error. Aiming at the need of estimation of target velocity measurement error in low-altitude tracking, combined with multi-path model and radar pitch angle tracking principle, the error of Y-target tracking velocity measurement and target slope are simulated by the pitch variation relationship of multipath interference effect. Distance relationship. The simulation results show that the measurement error of Y to the target tracking speed basically agrees with the data of actual school flight.