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.
Original language | English |
---|---|
Title of host publication | 2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007 |
Pages | 2110-2113 |
Number of pages | 4 |
DOIs | |
Publication status | Published - 1 Dec 2007 |
Event | 2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007 - Barcelona, Spain Duration: 23 Jun 2007 → 28 Jun 2007 |
Conference
Conference | 2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007 |
---|---|
Country/Territory | Spain |
City | Barcelona |
Period | 23/06/07 → 28/06/07 |
Keywords
- Deformation detection
- Differential SAR interferometry
- Permanent scatterers
ASJC Scopus subject areas
- Geology
- Software