时空相干相关K分布海杂波仿真  

Simulation of temporal-spatial coherent correlation K-distributed sea clutter

作　　者：邓赛强 金林[1] 梁浩[1] 

机构地区：[1]南京电子技术研究所,南京210013

出　　处：《电子测量技术》2017年第11期61-65,共5页Electronic Measurement Technology

摘　　要：海杂波通常会制约雷达对目标的检测,它的精确仿真关乎到雷达性能预估的准确性。首先介绍了海杂波的幅度统计模型,然后对它的时间相关性与空间相关性进行讨论。并在此基础上研究了基于球不变随机过程法(SIRP)仿真时空相干相关K分布杂波的方法。最后仿真生成海杂波数据,结果表明用该方法获到的杂波数据的概率密度函数与K分布模型匹配得很好。同时时间与空间相关性得到了满足,与杂波的复合散射机理也贴合,证实该仿真方法是可行的。Sea clutter often restricts radar to detect target. The accuracy of the radar performance assessment is related to accurate simulation of sea clutter. The amplitude distribution of sea clutter is introduced first in this paper. Then this paper discusses the features of temporal and spatial correlation. And a simulation method based on spherically invariant random process was proposed. Finally, results show that the clutter data which is obtained by the method is K distribution and spatial-temporal correlation is satisfied. This method is joint with the composite scattering mechanism and is feasible

关 键 词：海杂波 K分布 时空相关 相干 球不变随机过程 

分 类 号：TN955[电子电信—信号与信息处理]