Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13646
Title: Evaluation of accuracy in PS-based radar interferometry with simulated data
Authors: Chen, Q
Ding, X 
Liu, G
Li, Y
Keywords: Deformation detection
Differential SAR interferometry
Permanent scatterers
Issue Date: 2007
Source: International Geoscience and Remote Sensing Symposium (IGARSS), 2007, 4423250, p. 2110-2113 (CD-ROM) How to cite?
Abstract: This paper analyzes the relationship between the noise level in interferometric phases at permanent scatters (PS) and the accuracy in deformation measurements with the PS-based differential SAR interferometry (PS-DInSAR). The study is carried out based on interferograms that are simulated with parameters of 26 ERS-1/2 SAR scenes over Shanghai. The results show that in the cases of high phase signal to noise ratio (noise level lower than ±0.5 rad), the accuracy of the deformation rates estimated with PS-DInSAR can be up to about ±2 mm/a, and the accuracy of the estimated elevations is about ±1 m. The accuracies decrease with the increase of the noise level of the phase data. When the noise level is ±0.8 rad, the accuracy of deformation measurements decreases to ±1 cm/a and that of elevation measurements decreases to ±3 m.
Description: 2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007, Barcelona, 23-28 June 2007
URI: http://hdl.handle.net/10397/13646
ISBN: 1424412129
9781424412129
DOI: 10.1109/IGARSS.2007.4423250
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