| Technology Application |
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Experimental study of vertical and horizontal displacement retrieval by joint analysis of ascending and descending PSInSAR data |
| WANG Yan1, ZHANG Ling1, GE Daqing1, ZHANG Xuedong2, LI Man1 |
1. China Aero Geophysical Surveying and Remote Sensing Center for Land and Resources, Beijing 100083, China;
2. School of Geomatics and Urban Information, Beijing University of Civil Engineering and Architecture, Beijing 100044, China |
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Abstract Multi-track InSAR measurements provide the potential for 2D and 3D displacement field retrieval and are commonly applied to coseismic deformation and earthquake source parameters estimation. Actually it is not possible to estimate 3D displacement vector since we can't generate 3D observations for the same area. Joint analysis of ascending and descending PSInSAR data enables the retrieval of vertical and horizontal displacement according to the sensitivity of InSAR measurements in different directions. In this paper, the authors made an experimental study of vertical and horizontal displacement retrieval by joint analysis of ascending and descending PSInSAR data. A novel model has been adopted to estimate vertical and east-west displacement with the ascending and descending data. The retrieval displacement indicates that the difference between ascending and descending PSInSAR measurements is not clear and the single track PSInSAR can be well applied to subsidence monitoring.
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| Keywords
remote sensing
application programming interface(API)
dynamic link library(DLL)
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Issue Date: 17 September 2014
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2014,
Vol. 26
