Tile 12SUC33, acquired 2023-10-08 (12SUC33_20231008013527_K5_ES02_NRB)
Compares the standard deviation of the ellipsoid-referenced gamma-naught (gamma-naught E, derived from the source SLC) with that of the terrain-flattened gamma-naught of the K-ARD NRB product (gamma-naught T) over common valid pixels, excluding NoData, Water, and Shadow pixels.
| Standard deviation, gamma-naught E (sigma_E) | 7.726 dB |
|---|---|
| Standard deviation, gamma-naught T (sigma_T) | 7.726 dB |
| Mean terrain slope | 2.012° |
| Relative difference (sigma_E − sigma_T) / sigma_T | -0.0001 |
| Basis of grade | The mean terrain slope is 7 degrees or less, and sigma_T exceeds sigma_E by less than 10 percent. |
Mean slope > 7°: A if sigma_T is lower than sigma_E by 10% or more; B if lower by less than 10%; C if sigma_T is not lower than sigma_E. Mean slope ≤ 7°: A if sigma_T is lower than sigma_E; B if sigma_T exceeds sigma_E by less than 10%; C if by 10% or more. Not assessable if valid pixels < 5%.