EO-1 (Earth Observing-1) Advanced Land Imager (ALI) Instrument Level 1R, Level 1Gs, Level 1Gst Data

Advanced Land Imager (ALI) provides image data from ten spectral bands (band designations). The instrument operates in a pushbroom fashion, with a spatial resolution of 30 meters for the multispectral bands and 10 meters for the panchromatic band. The standard scene width is 37 kilometers. Standard scene length is 42 kilometers, with an optional increased scene length of 185 kilometers (additional information).

For Advanced Land Imager (ALI) data, the following levels of correction are available:

Level 1R radiometrically corrected with no geometric correction applied. The image data are provided in 16-bit radiance values. The data are available in Hierarchical Data Format (HDF) and are distributed on CD-ROM, DVD, and File Transfer Protocol (FTP).

Level 1Gs is geometrically corrected and will be provided as a single "stitched" file. The image data are provided in 16-bit radiance values. The data are available in Hierarchical Data Format (HDF) or Geographic Tagged Image-File Format (GeoTIFF) and are distributed on DVD and File Transfer Protocol (FTP).

Level 1Gst is terrain corrected and will be provided as a single "stitched" file. The image data are provided in 16-bit radiance values. The data are available in Hierarchical Data Format (HDF) or Geographic Tagged Image-File Format (GeoTIFF) and are distributed on DVD and File Transfer Protocol (FTP).

[Source: USGS/EDC Homepage]

Data and Resources

Additional Info

Field Value
Maintainer LTA REPRESENTATIVE USGS EROS CENTER
Last Updated July 17, 2025, 17:41 (UTC)
Created April 1, 2025, 02:15 (UTC)
accessLevel public
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citation NASA, USGS. EO-1 (Earth Observing-1) Advanced Land Imager (ALI) Instrument Level 1R, Level 1Gs, Level 1Gst Data. Archived by National Aeronautics and Space Administration, U.S. Government, DOI/USGS/EROS. http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/ALI. Digital Radar Imagery Download.
creator NASA, USGS
data-presentation-form Digital Radar Imagery Download
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harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1220566654-USGS_LTA
issued 2001-03-16
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1220566654-USGS_LTA.html
language {en-US}
metadata_type geospatial
modified 2022-12-28
programCode {026:001}
publisher DOI/USGS/EROS
resource-type Dataset
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spatial -180.0 -83.85 180.0 83.1
temporal 2001-03-16T00:00:00Z/2023-03-01T00:00:00Z
theme {NMP,CWIC,geospatial}