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Correction factors for phase offset and phase ramp errors (radians), see Equation ( 1 ), and the final accuracy (RMSE) for the 39 Ground Control Points (GCP)
| Reference DSM | k 0 | k 1 | k 2 | RMSE |
|---|---|---|---|---|
| ALS DTM | 0.1603781470 | -0.0000644062 | 0.0000598075 | 1.54 m |
| SRTM-C | 0.1027309745 | -0.0000652833 | 0.0000286684 | 1.29 m |
| SRTM-X | 0.2173415607 | -0.0000852327 | 0.0000247047 | 1.27 m |
