All Landsat standard data products are processed using the Landsat Product Generation System (LPGS) with the following parameters applied:
MAP (North-up) image orientation
All Landsat Level-1 data products are created using the best available processing level for each particular scene. The processing level used is determined by the existence of ground control points (GCP), elevation data provided by a Digital Elevation Model (DEM), and/or data collected by the spacecraft and sensor (Payload Correction Data (PCD). See the Landsat Geometry page for a full description of the processing levels used and additional information about GCP and DEM updates.
The Standard Terrain Correction (L1TP) and Systematic Terrain Correction (L1GT) products incorporate a Digital Elevation Model (DEM) for topographic accuracy. The Standard Terrain Correction (L1TP) products also utilize ground control points for additional geometric accuracy.