天发地收一阶海杂波空时自适应抑制  

STAP for first-order sea clutter of sky-surface system

作　　者：褚天琦[1] 位寅生[1] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150001

出　　处：《现代电子技术》2014年第15期1-4,8,共5页Modern Electronics Technique

基　　金：国家自然科学基金(61032011)

摘　　要：天发地收高频雷达的双基地特征使其一阶海杂波具有空时耦合性,但在双基地角和电离层扰动的作用下一阶海杂波产生明显的多普勒展宽,会淹没慢速舰船目标。以一阶海杂波空时耦合性为基础,理论推导并验证了其空时分布,利用波束相关性选择空时自适应降维处理算法的局域大小,有效地抑制了展宽海杂波并检测到被淹没的目标。The first-order sea clutter of HF sky-surface radar represents apparent space-time coupling because of its bistatic characteristic,but the first-order sea clutter may produce obvious Doppler broadening under the influence of bistatic angle and ionospheric disturbance which leads to the submerging of the low velocity ships. On the basis of first-order sea clutter space-time coupling characteristic,the space-time distribution of the first-order sea clutter was derived and verified in theory. Space-time adaptive processing （STAP） successfully suppressed the broadening sea clutter and found the submerged target by means of beam correlation to choose the size of local area in space-time adaptive dimension reduced algorithm.

关 键 词：天发地收系统 展宽一阶海杂波 空时自适应处理 局域联合处理算法 

分 类 号：TN911.734[电子电信—通信与信息系统]