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Landsat Day Transition Error Fix

By Landsat Missions

An error in the Collection 1 precision correction process affected Landsat 4-5 Thematic Mapper and Landsat 7 ETM+ scenes that were acquired during a day transition. This has been fixed in Collection 2. 

Return to Collection 2 Level-1 Data Overview

 

This error caused some of the precision correction parameters dependent on time to be incorrect, and in some cases, have a substantial error that caused significant warping in the Terrain Precision (L1TP) image or even caused the image to fail processing altogether.  As this error only affected scenes where the day of acquisition changed within the start and end times of the scene, there are only a few scenes per day that were impacted.

Landsat Day Transition Error and Fix
Sources/Usage: Public Domain. View Media Details
This is an example Landsat 7 scene that was acquired during a day transition. In the left image, warping can be clearly seen in the Collection 1-processed scene. The right image illustrates how the Collection 2-processed scene appears after the fix was implemented.