538
which seems useless as it prevents extraction of additional information in certain
cases.
GRD image calibration is vital for viewing the maximum amount of information
on an image. In our research, the ơ0 value is extracted using Calibration Tools of the
OrfeoToolbox software, which provides us with the backscattering coefficient of the
Table 17.2 Sentinel-1
imagery used in this study
Date
Incidence angle Orbit
09-102014
38.055
Ascending
02-112014
38.786
Descending
26-112014
38.653
Descending
13-012015
39.215
Ascending
26-032015
39.856
Ascending
07-042015
38.569
Ascending
01-052015
38.421
Descending
13-052015
39.654
Descending
30-062015
39.478
Ascending
05-082015
38.665
Descending
17-082015
37.789
Descending
29-082015
38.669
Ascending
10-092015
39.285
Descending
22-092015
39.456
Ascending
09-112015
38.721
Descending
03-122015
38.451
Ascending
27-122015
39.885
Ascending
20-012016
38.411
Descending
13-022016
39.662
Ascending
01-042016
39.453
Ascending
S. Niculescu et al.