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Optimum selection of common master image for ground deformation monitoring based on PS-DInSAR technique

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2 Author(s)
Zhengwei, Zhu ; Coll. of Information Science and Technology, Nanjing Univ. of Aeronautics of Aeronautics and Astronautics, Nanjing 210016, P. R. China; School of Information Engineering, Southwest Univ. of Science and Technology, Mianyang 621010, P. R. China ; Jianjiang, Zhou

Considering the joint effects of various factors such as temporal baseline, spatial baseline, thermal noise, the difference of Doppler centroid frequency and the error of data processing on the interference correlation, an optimum selection method of common master images for ground deformation monitoring based on the permanent scatterer and differential SAR interferometry (PS-DInSAR) technique is proposed, in which the joint correlation coefficient is used as the evaluation function. The principle and realization method of PS-DInSAR technology is introduced, the factors affecting the DInSAR correlation are analysed, and the joint correlation function model and its solution are presented. Finally an experiment for the optimum selection of common master images is performed by using 25 SAR images over Shanghai taken by the ERS-1/2 as test data. The results indicate that the optimum selection method for PS-DInSAR common master images is effective and reliable.

Published in:

Systems Engineering and Electronics, Journal of  (Volume:20 ,  Issue: 6 )

Date of Publication:

Dec. 2009

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