[关键词]
[摘要]
海面自身随机多变的特性会对海面目标的雷达回波信号检测产生重要影响。文中利用分形方法对海面建模仿真, 模拟了五种不同的海况,基于雷达工作原理设计了一款雷达视频回波信号仿真软件,提高了仿真的逼真度和实时性。针对雷达散射截面(RCS)不同的舰船目标模拟仿真雷达回波,研究了海况对海面目标雷达回波的影响。结果表明:随海况等级的增加,海杂波噪声信号增强,RCS 相对较小目标的雷达回波会逐渐被海杂波淹没。海面目标雷达回波仿真软件既能用于分析海面及目标的电磁散射特性;同时,在目标检测与识别中会有重要应用价值。
[Key word]
[Abstract]
The random variable characteristics of the sea surface will have an important influence on the radar echo signal detection of the sea surface target. The fractal method is used to model and simulate five different sea conditions, and a radar video echo signal simulation software is designed based on the radar working principle to improve the fidelity and real-time performance of the simulation. The effect of sea conditions on the echo of sea surface target radar is studied in the simulation of radar echoes for ship targets with different radar cross section (RCS). The radar echo simulation software of sea surface target can not only be used to analyze the electromagnetic scattering characteristics of sea surface and target, but also have important application value in object detection and recognition.
[中图分类号]
TN958. 93
[基金项目]
国家自然科学基金资助项目(41474117);华中师范大学中央高校基本科研业务费资助项目( CCNU18GF004;CCNU18JCXK02)
