逆合成孔径雷达成像包络对齐性能评估方法研究  

Research on Envelope Alignment Performance Assessment for Inverse Synthetic Aperture Radar Imaging

作　　者：黄璐[1] 王洋[1] 金胜[1] HUANG Lu WANG Yang JIN Sheng(Beifing Institute of Tracking and Telecommunications Technology, Beifing 100094, China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《无线电工程》2017年第3期23-26,共4页Radio Engineering

摘　　要：包络对齐的性能直接影响逆合成孔径雷达(ISAR)成像的质量。针对目前包络对齐性能难以客观定量评估的问题,提出一个包络对齐性能定量评估模型。根据目前常用的几种包络对齐算法,以其代价函数作为相应的客观评估参数,并分析其对于包络漂移、包络突跳及信噪比的敏感度。综合各评估参数的敏感度,以此作为在评估模型中所占权值的依据,建立定量评估模型,可避免单一评估参数引起的片面性。实测数据证明了该模型的有效性。Envelope alignment performance directly influences Inverse Synthetic Aperture Radar （ISAR） image quality. In order to resolve the problem on objective quantitative assessment of envelope alignment performance at present,this paper proposes a quantitative assessment model for envelope alignment performance.First,based on present common envelope alignment methods,the cost functions are taken as objective assessment parameters.The sensitivity to envelope drift,envelope kick and Signal-to-Noise Ratio is analyzed. Second,the weight of each assessment parameter is determined by synthesizing the sensitivity.Then the assessment model is built.The one-sidedness caused by single assessment parameter is avoided.Finally, the validity of the proposed approach is demonstrated by processing the real data.

关 键 词：逆合成孔径雷达 包络对齐 性能评估 评估模型 

分 类 号：TN957[电子电信—信号与信息处理]