平台摇摆下舰载相控阵雷达被动探测测角误差仿真

Simulation of Angle Measurement Error of Passive Detection for Shipborne Phased Array Radar under Platform Sway

对相控阵雷达单脉冲测角过程进行建模,并针对舰船摇摆对固定相控阵雷达被动超视距探测测角精度影响进行了仿真。通过对扇形接收波束进行不同仰角切割,分析了测角误差产生的原因。研究结果表明,当舰船摇摆时,接收波束水平切割波束指向以及幅度比值发生变化,进而导致测角结果产生偏差。

The mono-pulse angle measurement process of phased array radar is modeled,and the influence of ship sway on the angle measurement accuracy of passive over-the-horizon detection of fixed phased array radar is simulated.The causes of angle measurement error are analyzed by cutting the fan-shaped receiving beam at different elevation angles.The results show that when the ship sways,the horizontal cutting beam direction and amplitude ratio of the receiving beam change,which leads to the deviation of angle measurement results.