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How accurate is the radiometric calibration of Landsat images?

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How accurate is the radiometric calibration of Landsat images?


The ETM+ instrument aboard Landsat 7 was designed to maintain a radiometric accuracy of +/- 5% during its 5-year mission. The design supports this requirement through hardware design changes, prelaunch characterization, an on-orbit monitoring and calibration program, and changes in the ground processing of the data. Calibration Parameter Files (CPFs) describe radiometric and geometric data characteristics.


Landsat represents the world's longest continuously acquired collection of space-based moderate-resolution land remote sensing data. Four decades of imagery provides a unique resource for those who work in agriculture, geology, forestry, regional planning, education, mapping, and global change research. Landsat images are also invaluable for emergency response and disaster relief.


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Landsat Updates

The Landsat Update is an informal communication tool, prepared periodically and distributed electronically to USGS Landsat partners, to provide information about Landsat activities and related topics of interest.

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