Landsat Mission

Landsat Geometry

Accurate geometry ensures that Lands data pixels are aligned, and that the data can be used easily in time series analysis. The exceptional geometry of Landsat 8 OLI/TIRS data is used to improve the reference database used to precisely and accurately geolocate all Landsat 1-8 Level-1 data products. Landsat Science products inherit the geometry of Landsat Level-1 data. 

Levels of Processing

Levels of Processing

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Ground Control Points

Ground Control Points

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L8 Spatial Performance

L8 Spatial Performance

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Geometric Accuracy

To assure Landsat Level-1 data are suitable for time-series analysis, products need to be co-registered. The root-mean-square error (RMSE) reported in the metadata (MTL.txt) file can be used to filter the precision and terrain corrected Level-1 data products to meet application specific requirements. Landsat processing levels and their accuracies are listed on the Levels of Processing web page. 

Ground Control Points (GCPs) are defined as points on the surface of the earth of known location used to geo-reference Landsat Level-1 imagery.

During prelaunch testing, performance analysis was conducted on Landsat 8's Operational Land Imager (OLI) and Thermal Infrared Sensors (TIRS) spatial response