Pre- and Postcollapse Ground Deformation Revealed by SAR Interferometry: A Case Study of Foshan (China) Ground Collapse

Table 1

SAR parameters in this study.

Satellite	Orbit direction	Azimuth angle (°)	Incidence angle (°)	Number of SAR images	Data period
Sentinel-1A	Ascending	–10	40	55	12/03/2017–25/01/2019