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Title: High-rise building layover exploitation with non-local frequency estimation in SAR interferograms
Authors: Zhu, J
Ding, XL 
Li, ZW
Zhu, JJ
Xu, B
Issue Date: 2017
Source: Remote sensing, June 2017, v. 9, no. 6, 579, p. 1-16
Abstract: 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.
Keywords: InSAR
Building layover
Local frequency
Publisher: Molecular Diversity Preservation International (MDPI)
Journal: Remote sensing 
ISSN: 2072-4292
DOI: 10.3390/rs9060579
Rights: © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
The following publication Zhu, J., Ding, X. L., Li, Z. W., Zhu, J. J., & Xu, B. (2017). High-rise building layover exploitation with non-local frequency estimation in SAR interferograms. Remote Sensing, 9(6), (Suppl. ), 579, - is available at
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