The ASTER Orthorectified Registered Radiance at the Sensor (AST14OTH) products (https://lpdaac.usgs.gov/documents/618/ASTER_Earthdata_Search_Order_Instructions.pdf) contain imagery transformed from a perspective projection to an orthogonal one. An orthorectified image possesses the geometric characteristics of a map with near-vertical views for every location. These products are terrain corrected, provide radiometrically calibrated radiance, and are mapped to the Universal Transverse Mercator (UTM) coordinate system. The inputs include the following: an ASTER Level 1A Reconstructed Unprocessed Instrument dataset; georeferencing information from the ASTER instrument's and Terra platform's ephemeris and attitude data; and an ASTER-derived digital elevation model (DEM). The output product includes fifteen orthorectified ASTER Level 1B calibrated radiance images, one per band, as listed below. Improvements/Changes from Previous Versions As of January 2021, the LP DAAC has implemented version 3.0 of the Sensor Information Laboratory Corporation ASTER DEM/Ortho (SILCAST) software, which is used to generate the Level 2 on-demand ASTER Orthorectified and Digital Elevation Model (DEM) products (AST14). The updated software provides digital elevation extraction and orthorectification from ASTER L1B input data without needing to enter ground control points or depending on external global DEMs at 30-arc-second resolution (GTOPO30). It utilizes the ephemeris and attitude data derived from both the ASTER instrument and the Terra spacecraft platform. The outputs are geoid height-corrected and waterbodies are automatically detected in this version. Users will notice differences between AST14DEM, AST14DMO, and AST14OTH products ordered before January 2021 (generated with SILCAST V1) and those generated with the updated version of the production software (version 3.0). Differences may include slight elevation changes over different surface types, including waterbodies. Differences have also been observed over cloudy portions of ASTER scenes. Additional information on SILCAST version 3.0 can be found on the SILCAST website (http://www.silc.co.jp/en/products.html).
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Spatial Extent: | Bounding Rectangle: N: 83.0 S: -83.0 E: 180.0 W: -180.0 |
Data Format(s): | Archive: GeoTIFFDistribution: GeoTIFF |
Temporal Extent: | Platform(s): | Terra | |
Data Center(s): | LP DAAC | Instrument(s): | ASTER |
Version: | 003 |
10.5067/ASTER/AST14OTH.003
https://doi.org
3
ASTER On-Demand L3 Orthorectified Images
Active
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See https://lpdaac.usgs.gov/data/data-citation-and-policies/ for data access information.
Title: Publication reference title not provided
Online Resource: Not provided
Resolution | Range Begin | Range End | Unit of Measure | Accuracy |
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-180.0 | 180.0 |
Resolution | Range Begin | Range End | Unit of Measure | Accuracy |
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0.0 | 180.0 |
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Group: gov.nasa.gsfc.gcmd
Project Short Name | Campaigns | Project Dates |
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Terra |
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No dates provided. |
Coverage Type | Zone Identifier | Geometry | Granule Representation |
---|---|---|---|
HORIZONTAL | CARTESIAN | GEODETIC |
Varies
15.0 Meters
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30.0 Meters
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90.0 Meters
90.0 Meters
U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls,
South Dakota
57198
M-F, 8 a.m. to 4 p.m. Central Time
605-594-6116
866-573-3222
Contact DetailsLP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/
U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls,
South Dakota
57198
M-F, 8 a.m. to 4 p.m. Central Time
605-594-6116
866-573-3222
Contact DetailsLP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/Format: GeoTIFF
Format Type: Native
Average File Size: 42.0 MB
Total Collection File Size Begin Date: 2000-03-04T00:00:00.000Z
Format: GeoTIFF
Format Type: Native
Media: https
Average File Size: 42.0 MB
Total Collection File Size Begin Date: 2000-03-04T00:00:00.000Z