舰载雷达低空目标回波信号仿真研究

Study on simulation of low target echo for shipboard radar

针对舰载雷达探测和跟踪低空/超低空掠海飞行目标的特点,分别建立雷达系统探测目标的发射信号模型、海面反射的多径效应回波模型和海面杂波模型,并对多径效应引起的雷达仰角测量误差和雷达接收机接收的目标回波信号进行仿真分析。实验结果表明,本文既有助于舰载雷达系统对复杂环境下的回波信号特征进行分析,也有助于雷达系统设计的参数优化研究。对于改善和提高雷达系统的探测性能和跟踪精度,降低多路径效应和海杂波干扰等方面的研究,具有十分重要的工程参考价值。

According to the characteristics for the shipboard radar detecting and tracking flying targets in low altitude or super-low altitude, the following models for detecting targets, emission signal , multi-path effects and sea clutter are set up. Then a simulation analysis is given on the error of pitching angle by multi-path effects and radar echo. Experiments show this paper can help not only studying the characteristics of radar echo for the shipboard radar in complex conditions, but also to optimizing the radar vectors for the design of the radar system. And it also has the most important project reference value at the following facts, such as improving the detecting capability and tracking precision of the radar system, reducing interference of multi-path effects and sea clutter and so on.