Minimize OLI & TIRS - Products Information

The Landsat 8 OLI and TIRS data products are processed by ESA on a Near-Real Time (NRT) basis using the USGS processor, and are released to the users with ortho-rectified specifications consistent with all standard Level 1 data products. Where possible, Standard Terrain Corrected products are produced, however where this is not possible, Systematic Terrain Corrected products are produced:

  • Standard Terrain Corrected Level 1 Product (L1T): Precise Ortho-Corrected product; The most accurate level of processing as they incorporate Ground Control Points (GCPs) and a Digital Elevation Model (DEM) to provide systematic geometric and topographic accuracy; with geodetic accuracy dependent on the number, spatial distribution and accuracy of the GCPs over the scene extent, and the resolution of the DEM used.
     
  • Systematic Terrain Corrected Level 1 Product (L1GT): Basic Ortho-Corrected product; Normally generated where there is a lack of GCP's, and are derived purely from data collected by the sensor and spacecraft e.g. ephemeris data. Rectification is not applied to these products.

The Landsat 8 images consist of nine spectral bands, which are all acquired at 30 metre resolution, apart from the two TIRS bands which are acquired at 100 metres and resampled to 30 metres. On a scene-by-scene basis, there is also a quality assessment band included with each product which addresses the conditions that could affect the usefulness of the product. More information about this band is available here

Detailed information concerning the Landsat 8 data products is available here

For FAQs regarding the Landsat 8 Mission, see the USGS pages.

 

Algorithm Information

 

The European Space Agency (ESA) acquires Landsat data over Europe through the ESA ground stations, in co-operation with the USGS and NASA.

 

In terms of algorithms for Landsat 8, these are maintained by the USGS and are defined in the LDCM Algorithm Description Document

 

Landsat Technical Documents

 

Below are some useful technical documents regarding the Landsat 8 operations concept, algorithms and data formats.

 

Algorithms

        

Product Formats