张迪,
闫贺,
南京航空航天大学电子信息工程学院 ??南京 ??210000
基金项目:国家自然科学基金(61501231),民用航天“十三五”背景型号预研项目(D010102)
详细信息
作者简介:王旭东:男,1979年生,副教授,研究方向为雷达信号处理及硬件实现
张迪:女,1994年生,硕士生,研究方向为合成孔径雷达信号处理
闫贺:男,1985年生,副教授,研究方向为合成孔径雷达信号处理
通讯作者:闫贺 yanhe@nuaa.edu.cn
中图分类号:TN957.52计量
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被引次数:0
出版历程
收稿日期:2018-06-19
修回日期:2018-12-13
网络出版日期:2018-12-20
刊出日期:2019-05-01
Research on Spaceborne High Resolution Wide Swath Imaging Method Based on Relax Algorithm
Xudong WANG,Di ZHANG,
He YAN,
College of Electronic Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210000, China
Funds:The National Natural Science Foundation of China (61501231), The Civil Aerospace 13th Five-year Background Model Pre-research Project (D010102)
摘要
摘要:现代星载合成孔径雷达(SAR)系统要求同时具备高分辨率和宽测绘带的能力,而传统单通道星载SAR系统在分辨率和测绘带两个重要指标之间存在固有矛盾,因此方位向多通道的方法被提出并用于解决上述问题。该文在分析方位向多通道回波模型的基础上,结合Relax算法的特点,提出了一种基于Relax算法的星载SAR高分宽幅(HRWS)成像方法,并给出了新方法的详细迭代流程。通过点目标回波仿真,并与传统的方位向多通道HRWS重建方法进行对比,验证了新方法的可靠性和有效性。
关键词:星载合成孔径雷达/
高分宽幅/
Relax算法
Abstract:The modern spaceborne SAR system requires both high resolution and wide swath, and the conventional single channel spaceborne SAR system has a contradiction between the two important indexes, the azimuth multichannel method is proposed and used to solve the above problem. Based on the analysis of the azimuth multichannel echo model and the characteristics of the Relax algorithm, a spaceborne SAR High Resolution Wide Swath (HRWS) imaging method is proposed, and the iterative process of the new method is described in detail. By the simulation of point target echo, and comparing with the traditional azimuth multichannel HRWS reconstruction methods, the reliability and effectiveness of the proposed method are verified.
Key words:Spaceborne Synthetic Aperture Radar (SAR)/
High Resolution Wide Swath (HRWS)/
Relax algorithm
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