Table 1.
Data used in the study.
| Source | Sentinel-1A | Sentinel-1A | Google Earth | Sentinel-2A | DEM |
|---|---|---|---|---|---|
| Purpose | Time-series displacement assessment | Spatial pattern analysis of ground movement | Inventory development & Evolution precession | Landcover mapping & InSAR results visualization | Topographic parameters extraction |
| Flight direction | Descending | Ascending | – | Descending | – |
| Temporal span | 1st Jan. 2018–23rd Dec. 2021 | 12th Jan. 2018–31st July 2021 | 2017–2022 | 13th Aug. 2021 | 11th Feb. 2000 |
| Band | C | C | Visible | Visible | X |
| Wavelength (m) | 0.056 | 0.056 | – | 0.443–2.19 (μm) | 0.031 |
| Spatial Resolution (m) | 5*20 | 5*20 | < 2 | 10 | 30 |
| NO. of Images | 110 | 108 | – | 1 | – |
| Revisiting time (days) | 12 | 12 | – | 2–5 | 11 (mission length) |
| Path | 107 | 100 | – | – | – |
| Frame | 473 | 114 | – | – | – |
| Incident angle (.) | 39.64 | 44.16 | – | – | 57 |
| Product type | SLC | SLC | – | – | – |
| Polarization | VV | VV | – | – | VV |
| Acq. mood | IW | IW | – | – | – |
| NO. of PS points | 213,601 | 298,827 | – | – | – |
| Min. LOS (mm/yr) | − 346 | − 364 | – | – | – |
| Max. LOS (mm/yr) | 376 | 364 | – | – | – |