大入射余角实测高分辨海杂波数据幅度统计特性  

Statistics Properties of Real High Resolution Sea Clutter Data Amplitude at Large Grazing Angles

作　　者：宋杰[1] 于家伟[2] 丁昊[1] 刘宁波[1] SONG Jie YU Jiawei DING Hao LIU Ningbo(Institute of Information Fusion Technology, NAAU, Yantai Shandong 264001, China School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China)

机构地区：[1]海军航空工程学院信息融合技术研究所,山东烟台264001 [2]西南交通大学电气工程学院,成都611756

出　　处：《海军航空工程学院学报》2017年第2期187-191,204,共6页Journal of Naval Aeronautical and Astronautical University

基　　金：国家自然科学基金资助项目(61471381;61471380)

摘　　要：基于Ku波段高分辨大入射余角(擦地角)海杂波数据,采用瑞利分布、韦布尔分布、对数正态分布、K分布和KK分布进行仿真,并与实测数据对比,分析了这些分布方式的拟合效果。结果表明,海杂波的幅度在大入射余角情况下基本还是逼近瑞利分布的,海杂波在某些距离单元上的幅度分布曲线尾部偏离瑞利分布,此时K和KK分布可在拖尾处达到更好的拟合效果。The Ku-band, high-resolution sea clutter data at high grazing angles was used to fit the common theoretical models, including rayleigh distribution, Weibull distribution, logarithmic normal distribution, K distribution and KK distri- bution. The fitting effect of these distribution methods was analyzed in this paper and the results showed that the amplitude of sea clutter was close to rayleigh distribution in the case of large grazing angle and tail of the amplitude distribution curve of the sea clutter in some distance units deviates from the rayleigh distribution while the K and KK distributions couldfit better.

关 键 词：大入射余角 分布 海杂波 实测数据 

分 类 号：TN953[电子电信—信号与信息处理]