Difference between revisions of "S-1 Observed Water Extent"
(Created page with " [Home] - [back to GFMS Products] ---- The '''Sentinel-1 Observed Water Extent''' identifies the pixels classified as open and calm water using Senti...") |
|||
| Line 7: | Line 7: | ||
[[File:figure2.jpg]] | [[File:figure2.jpg]] | ||
| + | [[File:figure3.jpg]] | ||
---- | ---- | ||
[[GFMS | [Home]]] - [[PRODUCTS | [back to GFMS Products]]] | [[GFMS | [Home]]] - [[PRODUCTS | [back to GFMS Products]]] | ||
Revision as of 09:38, 12 November 2020
[Home] - [back to GFMS Products]
The Sentinel-1 Observed Water Extent identifies the pixels classified as open and calm water using Sentinel-1 SAR backscatter intensity and is derived using the ensemble flood mapping algorithm described in section 0.
To map water extent pixels for a certain date, the algorithm uses as input the Sentinel-1 data overpass plus offline-generated Sentinel-1 SAR parameters and auxiliary thematic datasets such as Exclusion Mask and topography(e.g. DEM and HAND index).
The relative orbit path information, to select the corresponding offline-generated Sentinel-1 SAR parameters, is extracted from the“Sentinel-1 Metadata”. All the processing is done at the 20m-sampling of the Sentinel-1 pre-processed data cube. The Sentinel-1 Observed Water Extent values are described below.
