How to View SAR Data
How to View Synthetic Aperture Radar (SAR) Imagery
Most SAR products are delivered in either CEOS or GeoTIFF file formats. These file formats will not display in both Windows and Mac default image viewers. However, you can view GeoTIFFs in a GIS program. In addition, both GeoTIFF and CEOS images can be viewed using free downloadable software from ASF called ASFView. ASFView is included when you download ASF's MapReady software.
|File Format||Dataset||Needed to View|
|CEOS L1 & L1.5 products||ERS-1, ERS-2, JERS-1, RSAT-1, PALSAR||ASFView/MapReady|
Instructions: View and geocode CEOS Format Data
|GeoTIFF products||PALSAR RTC, Sentinel-1 GRD||ArcGIS, QGIS, S1TBX|
Instructions: View PALSAR RTC images in GIS
|GeoTIFF products||Terrestrial Ecology, Seasat||ArcGIS,QGIS ASFView/MapReady|
Synthetic Aperture Radar (SAR) and GIS
Many users want to work with their SAR imagery in a GIS program, which necessitates that the data be in the GeoTIFF format. GeoTIFFs may be viewed in GIS programs.
PALSAR RTC GeoTIFF products are in gamma0. They can be converted to sigma0 for better viewing in GIS.
Instructions: Data Recipes - View (PALSAR) Radiometrically Terrain Corrected images in GIS
The basic steps are:
- Download MapReady software
- Obtain a digital elevation model (DEM) for your area of interest
- Terrain correct your L1 or L1.5 product using MapReady software, apply calibration