海面多路径下比相测角误差仿真分析

Simulation Analysis of Phase-compare Angle Measurement Error Caused by Multipath over Sea Surface

在超低空环境下,多路径效应会严重影响被动制导型导弹的测角精度。文章采用面元KA法及微扰法近似计算,建立海面多路径下比相测角仿真模型,并通过在造波池开展定量试验验证计算模型精度。仿真结果表明,在特定参数条件下,多路径效应会使探测器跟踪目标精度降低,甚至跟踪失效。

In ultra-low altitude cases, multipath effect has great effection on angle measurement precision of passive seeker. KA and SPA are used to simulate the phase-compare angle measurement by multipath over sea surface, and the calculation model precision is tested by quantitative measurements in wave tank. The simulation results show that in spectific parameter condition, the multipath effect will reduce tracking accuracy of target to with dectors, even lose the target.