多波段InSAR的CRT相位解缠方法

doi:10.3969/j.issn.1001-2400.2011.06.015

J4 ›› 2011, Vol. 38 ›› Issue (6): 97-102.doi: 10.3969/j.issn.1001-2400.2011.06.015

多波段InSAR的CRT相位解缠方法

靳国旺^1,2;张红敏²;徐青²;龚志辉²

(1. 中国科学院电子学研究所微波成像技术国家级重点实验室，北京 100190；
2. 信息工程大学测绘学院，河南郑州 450052)

收稿日期:2010-10-07 出版日期:2011-12-20 发布日期:2011-11-29
通讯作者: 靳国旺
作者简介:靳国旺(1977-)，男，副教授，博士，E-mail: guowang_jin@yahoo.com.cn
基金资助:
中国博士后科学基金资助项目(200801111);国家自然科学基金资助项目(40771142，40871213，41071296);国家西部1∶50000地形图空白区测图工程项目资助

Phase unwrapping algorithm with CRT for multi-band InSAR

JIN Guowang^1,2;ZHANG Hongmin²;XU Qing²;GONG Zhihui²

(1. National Key Lab. of Sci. and Tech. on Micro. Imaging, Inst. of Electronics Chinese Academy of Sci., Beijing 100190， China;
2. Inst. of Surveying and Mapping, Information Eng. Univ., Zhengzhou 450052， China)

Received:2010-10-07 Online:2011-12-20 Published:2011-11-29
Contact: JIN Guowang

摘要/Abstract

摘要：

对于InSAR系统，当波长较长时，干涉图条纹频率较低，相位解缠容易，但反演的高程精度较低;而当波长较短时，干涉图条纹频率较高，相位解缠困难，但反演的高程精度较高．为了充分利用多波段InSAR干涉相位之间的互补信息，设计了利用中国余数定理的多波段InSAR相位解缠方法，采用由DEM仿真的多波段干涉图进行了相位解缠实验，得到了理想的解缠结果，成功解决了因地形起伏较大或基线较长而引起的干涉相位欠采样处的相位解缠难题．

关键词: 合成孔径雷达干涉测量, 多波段, 相位解缠, 数字高程模型

Abstract:

For the InSAR System, when the wavelength is longer, the frequency of fringes will be lower, the phase unwrapping will be easier, and the accuracy of derived heights will be lower. However, when the wavelength is shorter, the frequency of fringes will be higher, the phase unwrapping will be more difficult, and the accuracy of derived heights will be higher. In order to make the best use of compensatory information in multi-band InSAR phases, the phase unwrapping algorithm with the Chinese Remainder Theorem for multi-band InSAR is designed. The multi-band interferograms simulated from DEM are applied to do phase unwrapping experiments. The satisfying phase unwrapping results are obtained. The difficulty in phase unwrapping of sub-sampling interferometric phases due to great hypsography or longer baseline is removed.

Key words: interferometric synthetic aperture radar, multi-band, phase unwrapping, digital elevation model

靳国旺;张红敏;徐青;龚志辉. 多波段InSAR的CRT相位解缠方法[J]. J4, 2011, 38(6): 97-102.

JIN Guowang;ZHANG Hongmin;XU Qing;GONG Zhihui. Phase unwrapping algorithm with CRT for multi-band InSAR[J]. J4, 2011, 38(6): 97-102.

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多波段InSAR的CRT相位解缠方法

Phase unwrapping algorithm with CRT for multi-band InSAR

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