High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms

High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms

The wide application of high-resolution SAR data, such as TanDEM-X and TerraSAR-X, has resulted in an increase of the data processing difficulty of interferograms, especially in urban areas with serious layovers caused by high-rise buildings. In this paper, a new method based on frequency estimation...

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Bibliographic Details
Main Authors: Jun Zhu, Xiaoli Ding, Zhiwei Li, Jianjun Zhu, Bing Xu
Format: Article
Language:English
Published: MDPI AG 2017-06-01
Series:Remote Sensing
Subjects:
InSAR
building layover
local frequency
non-local
Online Access:http://www.mdpi.com/2072-4292/9/6/579
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spelling doaj-53f814de028d44e99b380971bf3a554c2020-11-24T22:38:47ZengMDPI AGRemote Sensing2072-42922017-06-019657910.3390/rs9060579rs9060579High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR InterferogramsJun Zhu0Xiaoli Ding1Zhiwei Li2Jianjun Zhu3Bing Xu4School of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaDepartment of Land Surveying and Geo-Informatics, Hong Kong Polytechnic University, Hong Kong, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaSchool of Geosciences and Info-Physics, Central South University, Changsha 410083, ChinaThe wide application of high-resolution SAR data, such as TanDEM-X and TerraSAR-X, has resulted in an increase of the data processing difficulty of interferograms, especially in urban areas with serious layovers caused by high-rise buildings. In this paper, a new method based on frequency estimation is proposed to extract and compensate the building layover phase without considering the building structure. We use a non-local algorithm to estimate the high-accuracy frequency in the range direction, which is utilized to extract the layover areas of a building. Then, a two-step method for estimating local frequencies is used for layover phase removal. Efficient frequency estimation and building extraction is demonstrated on real data in comparison with traditional methods. The results of the removal approach with both simulated and real TanDEM-X and TerraSAR-X images are presented to prove the potential of the method.http://www.mdpi.com/2072-4292/9/6/579InSARbuilding layoverlocal frequencynon-local
collection DOAJ
language English
format Article
sources DOAJ
author Jun Zhu
Xiaoli Ding
Zhiwei Li
Jianjun Zhu
Bing Xu
spellingShingle Jun Zhu
Xiaoli Ding
Zhiwei Li
Jianjun Zhu
Bing Xu
High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms
Remote Sensing
InSAR
building layover
local frequency
non-local
author_facet Jun Zhu
Xiaoli Ding
Zhiwei Li
Jianjun Zhu
Bing Xu
author_sort Jun Zhu
title High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms
title_short High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms
title_full High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms
title_fullStr High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms
title_full_unstemmed High-Rise Building Layover Exploitation with Non-Local Frequency Estimation in SAR Interferograms
title_sort high-rise building layover exploitation with non-local frequency estimation in sar interferograms
publisher MDPI AG
series Remote Sensing
issn 2072-4292
publishDate 2017-06-01
description The wide application of high-resolution SAR data, such as TanDEM-X and TerraSAR-X, has resulted in an increase of the data processing difficulty of interferograms, especially in urban areas with serious layovers caused by high-rise buildings. In this paper, a new method based on frequency estimation is proposed to extract and compensate the building layover phase without considering the building structure. We use a non-local algorithm to estimate the high-accuracy frequency in the range direction, which is utilized to extract the layover areas of a building. Then, a two-step method for estimating local frequencies is used for layover phase removal. Efficient frequency estimation and building extraction is demonstrated on real data in comparison with traditional methods. The results of the removal approach with both simulated and real TanDEM-X and TerraSAR-X images are presented to prove the potential of the method.
topic InSAR
building layover
local frequency
non-local
url http://www.mdpi.com/2072-4292/9/6/579
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AT xiaoliding highrisebuildinglayoverexploitationwithnonlocalfrequencyestimationinsarinterferograms
AT zhiweili highrisebuildinglayoverexploitationwithnonlocalfrequencyestimationinsarinterferograms
AT jianjunzhu highrisebuildinglayoverexploitationwithnonlocalfrequencyestimationinsarinterferograms
AT bingxu highrisebuildinglayoverexploitationwithnonlocalfrequencyestimationinsarinterferograms
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