基于分布式压缩感知的重轨干涉SAR形变检测方法与实验

doi:10.7523/j.issn.2095-6134.2016.01.016

中国科学院大学学报 ›› 2016, Vol. 33 ›› Issue (1): 107-114.DOI: 10.7523/j.issn.2095-6134.2016.01.016

基于分布式压缩感知的重轨干涉SAR形变检测方法与实验

田野^1,2, 张冰尘¹, 洪文¹

1. 中国科学院电子学研究所微波成像技术国家重点实验室, 北京 100190;
2. 中国科学院大学, 北京 100190

收稿日期:2015-01-20 修回日期:2015-04-28 发布日期:2016-01-15
通讯作者: 田野

Deformation detection approach for repeat-passInSAR based on distributed compressed sensing

TIAN Ye^1,2, ZHANG Bingchen¹, HONG Wen¹

1. National key Laboratery of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100190, China

Received:2015-01-20 Revised:2015-04-28 Published:2016-01-15

摘要/Abstract

摘要：

提出一种基于分布式压缩感知(DCS)的重轨干涉SAR形变检测方法.DCS理论利用多次观测信号集的联合稀疏特性和相关性,对信号集进行联合重建.本文将DCS理论引入微波成像形变检测中,并对地基SAR复数据进行处理,利用相位数据检测场景形变,比较压缩感知(CS)算法和DCS算法在降采样条件下的重建结果.CS算法和DCS算法都具有保相性,在幅度和相位图像中可以很好地消除副瓣,成像效果比Omega-k算法好.基于DCS的稀疏微波联合观测系统可以利用多幅场景间回波数据的联合稀疏特性,进一步降低数据采集,实现准确重建和检测.

关键词: 形变检测, 重轨干涉测量, 干涉合成孔径雷达, 分布式压缩感知

Abstract:

A model for repeat-pass interferometric synthetic aperture radar (InSAR) is proposed to detect deformation based on distributed compressed sensing (DCS). DCS is applied to recover the signals from independent observations of multiple sensors, which are sparse in a transform domain and coherent with each other. We conduct a series of ground-based SAR experiments to compare the recovery performance using different imaging algorithms, such as compressed sensing (CS) and DCS. We find that images recovered by CS and DCS can preserve the phase information of the complex data and have better focus and lower sidelobes than those by Omega-k. Furthermore, by taking advantage of the joint sparsity among multiple scene echoes, DCS joint observation system can further reduce independent observations than CS and achieve scene reconstruction and deformation detection.

Key words: deformation detection, repeat track interferometry (RTI), interferometric synthetic aperture radar (InSAR), distributed compressed sensing (DCS)

中图分类号:

TN957

田野, 张冰尘, 洪文. 基于分布式压缩感知的重轨干涉SAR形变检测方法与实验[J]. 中国科学院大学学报, 2016, 33(1): 107-114.

TIAN Ye, ZHANG Bingchen, HONG Wen. Deformation detection approach for repeat-passInSAR based on distributed compressed sensing[J]. , 2016, 33(1): 107-114.

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基于分布式压缩感知的重轨干涉SAR形变检测方法与实验

Deformation detection approach for repeat-passInSAR based on distributed compressed sensing

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