星载双基地雷达杂波抑制能力分析与构型优选  

Performance analysis and configuration optimization of clutter repection ability of spaceborne bistatic radar

作　　者：何鹏远 杨志伟[1] 谭啸 HE Pengyuan;YANG Zhiwei;TAN Xiao(National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China)

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《系统工程与电子技术》2022年第2期440-447,共8页Systems Engineering and Electronics

基　　金：国家自然科学基金(62071481);国家自然科学基金青年基金(61801373);上海航天科技创新基金(SAST2018043,SAST2019036)资助课题。

摘　　要：星载双基地雷达具有覆盖范围广、抗隐身,抗干扰等优势,在未来具有极大的应用潜力。然而,由于星载双基系统具有轨道构型差异大、空间尺度异构的特点,使得双基系统的杂波谱结构在不同的轨道构型下具有较大的差异。本文结合星载双基几何模型,综合考虑分辨率空变、地形起伏等因素对杂波协方差矩阵的影响,分析了同轨道高度下的类单基构型与远距双基构型的杂波距离依赖性与自适应处理损失,并对星载双基构型与观测模式提出了约束要求,能支撑星载双基雷达的构型优化设计。Spaceborne bistatic radar has the advantages of wide coverage,anti-stealth,anti-jamming and so on,and has great potential for application in the future.However,due to spaceborne bistatic radar has the characteristics of the large differences in orbital configurations and heterogeneous spatial scales,the clutter spectrum structure of the bistatic radar system is quite different in diverse orbital configurations.In this paper,combined with spaceborne bistatic geometry,consider with topographic relief and resolution space variation and other factors effects on clutter covariance matrix,the clutter distance dependence and adaptive processing loss are analyzed for ana-single based configuration and long distance bistatic configuration under the same altitude orbits,and the spaceborne bistatic orbits configurations and the observation model constraint are proposed to support the optimal design of spaceborne bistatic radar.

关 键 词：星载双基地雷达 轨道构型 杂波模型 距离依赖性 

分 类 号：TN951[电子电信—信号与信息处理]