基于实测数据的海杂波时空相关性分析  

Spatial & Temporal Correlation Analysis of Sea Clutter Based on Real Radar Data

作　　者：刘宁波[1,2] 董云龙[1] 于家伟[3] 丁昊[1] 关键[1] 王国庆[1] LIU Ningbo DONG Yunlong YU Jiawei DING Hao GUAN Jian WANG Guoqing(Institute of Information Fusion Technology, NAAU, Yantai Shandong 264001, China No.23 Institute of the Second Academy, China Aerospace Science and Industry Corporation, Beijing 100854, 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研究所,山东烟台264001 [2]中国航天科工集团第二研究院二十三所,北京100854 [3]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199-204,共6页Journal of Naval Aeronautical and Astronautical University

基　　金：国家自然科学基金资助项目(61401495;61471382;61501487;61531020;U1633122;61471381);山东省自然科学基金资助项目(2015ZRA06052);航空科学基金资助项目(20162084005;20162084006;20150184003)

摘　　要：海杂波的相关特性分为时间相关性和空间相关性,二者均与雷达系统参数、环境条件等多种因素有关。文章利用X波段雷达实测海杂波数据,重点研究了不同极化条件下海杂波的时间相关性、高低典型海况和不同入射余角条件下的海杂波距离向和方位向空间相关性。经大量实测数据验证表明,极化方式对海杂波强时间相关性影响较小,海杂波距离向空间相关性受海况影响较大、方位向相邻分辨单元空间相关性较弱,这些结论对于海杂波中目标检测方法优化设计具有重要意义。The correlation characteristics of sea clutter are time-dependent and spatial-dependent, which both are related to radar system parameters, environmental conditions and other factors. In this paper, the X-band real sea clutter data were used to study the temporal correlation of sea clutter under different polarizations, as well as the distance-spatial corre- lation and azimuth-spatial correlation respectively on the typical high and low sea conditions and at different grazing an- gles. The experimental results showed that the polarization had little effect on the time correlation of the sea clutter, the dis- tance-spatial correlation of the sea clutter was greatly influenced by the sea condition, and the azimuth-spatial correlation of the azimuthal adjacent resolution unit was weak. These conclusions are of great significance to the optimization of target detection method in sea clutter.

关 键 词：雷达 海杂波 时间相关 空间相关 

分 类 号：TN957[电子电信—信号与信息处理]