高海情海面电磁缩比模拟方法及试验验证

Study and Experimental Verification on Electromagnetic Scaled Measurement for Rough Sea Surface in High Sea Condition

针对实验室内难以直接构造高海情海面的问题,采用电磁缩比测量的方法研究其电磁散射特性。首先讨论了缩比PM谱海面满足几何相似性的要求,然后定量分析了以淡水替代海水造成不满足物理相似性要求而引入的误差和对粗糙海面进行缩比模拟测量的影响。根据粗糙海面缩比模拟理论,在实验室内成功模拟构造满足缩比测量条件的粗糙海面,并开展了海面缩比模拟测试验证,获取了海面散射特性数据。

Scaled sea surface model is produced to simulate high scaled sea surface, which could be used in electromagnetic scattering measurement. The geometrical similarity that required scaled PM sea surface is discussed. The error of introduced by fresh water instead of sea water is analyzed quantificationally, and the approach of scaled simulation measurement for rough sea surface is also discussed. According to the scaled simulation theory and condition of rough sea surface, one-dimensional scaled PM surface is produced successfully, and the date of back scattering cross section of rough sea surface is obtained.