The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Level-1B (AST_L1B) Registered Radiance at the Sensor data product is radiometrically calibrated and geometrically co-registered. Application of intra-telescope and inter-telescope registration corrections for all bands are relative to the reference band for each telescope: Visible and Near Infrared (VNIR) Band 2, Shortwave Infrared (SWIR) Band 6, and Thermal Infrared (TIR) Band 11.
| Characteristic | Description |
|---|---|
| Collection | Terra ASTER |
| DOI | 10.5067/ASTER/AST_L1B.003 |
| File Size | ~90 MB |
| Temporal Resolution | Other |
| Temporal Extent | 2000-03-04 to Present |
| Spatial Extent | Global |
| Coordinate System | Universal Transverse Mercator (UTM) |
| Datum | World Geodetic System (WGS84) |
| File Format | HDF-EOS or GeoTIFF |
| Geographic Dimensions | ~60 km x 60 km |
| Characteristic | Description |
|---|---|
| Number of Science Dataset (SDS) Layers | 15 |
| Columns/Rows | 4980 x 4200 (VNIR), 4980 x 4600 (VNIR 3B), 2490 x 2100 (SWIR), and 830 x 700 (TIR) |
| Pixel Size | 15 m (VNIR), 30 m (SWIR), and 90 m (TIR) |
| SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor | Additional Offset |
|---|---|---|---|---|---|---|---|---|
| VNIR_Band1 | 15 meter resolution VNIR Band 1 (0.52 to 0.60 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| VNIR_Band2 | 15 meter resolution VNIR Band 2 (0.63 to 0.69 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| VNIR_Band3N | 15 meter resolution VNIR Band 3 (0.78 to 0.86 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| VNIR_Band3B | 15 meter resolution VNIR Band 3B (0.78 to 0.86 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| SWIR_Band4 | 30 meter resolution SWIR Band 4 (1.600 to 1.700 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| SWIR_Band5 | 30 meter resolution SWIR Band 5 (2.145 to 2.185 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| SWIR_Band6 | 30 meter resolution SWIR Band 6 (2.185 to 2.225 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| SWIR_Band7 | 30 meter resolution SWIR Band 7 (2.235 to 2.285 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| SWIR_Band8 | 30 meter resolution SWIR Band 8 (2.295 to 2.365 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| SWIR_Band9 | 30 meter resolution SWIR Band 9 (2.360 to 2.430 µm) | W/m²/sr/μm | 8-bit unsigned integer | N/A | N/A | 0 to 255 | N/A | N/A |
| TIR_Band10 | 90 meter resolution TIR Band 10 (8.125 to 8.475 µm) | W/m²/sr/μm | 16-bit unsigned integer | N/A | N/A | 0 to 65535 | N/A | N/A |
| TIR_Band11 | 90 meter resolution TIR Band 11 (8.475 to 8.825 µm) | W/m²/sr/μm | 16-bit unsigned integer | N/A | N/A | 0 to 65535 | N/A | N/A |
| TIR_Band12 | 90 meter resolution TIR Band 12 (8.925 to 9.275 µm) | W/m²/sr/μm | 16-bit unsigned integer | N/A | N/A | 0 to 65535 | N/A | N/A |
| TIR_Band13 | 90 meter resolution TIR Band 13 (10.25 to 10.95 µm) | W/m²/sr/μm | 16-bit unsigned integer | N/A | N/A | 0 to 65535 | N/A | N/A |
| TIR_Band14 | 90 meter resolution TIR Band 14 (10.95 to 11.65 µm) | W/m²/sr/μm | 16-bit unsigned integer | N/A | N/A | 0 to 65535 | N/A | N/A |
Users are advised that ASTER SWIR data acquired from April 2008 to the present exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory Document for more details.