What are Landsat Response Linearization Look Up Tables?

Landsat Response Linearization Look Up Tables (RLUT) are additional files that accompany Calibration Parameter Files (CPFs) and contain a mapping lookup table to linearize the output of the Landsat 8 Operational Land Imager (OLI) detectors.

Learn more (and download RLUT files): Landsat Response Linearization Look Up Tables

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How is the percentage of cloud cover calculated in a Landsat scene?

The C Function of Mask (CFMask) algorithm is used in Landsat Collection 1 Level-1 data processing. This algorithm provides a full-image “Scene Cloud Cover” estimation of the percentage of cloud cover calculated over an entire Landsat scene. Land Cloud Cover, which is also included, is determined by calculating the percentage of clouds over land-...

What is Landsat definitive ephemeris?

Definitive Ephemeris is used for geometrically correcting Landsat 7 data and providing improved accuracy over predicted ephemeris. Learn more (and download DE files): Landsat Definitive Ephemeris

What are Landsat Bias Parameter Files?

Landsat Bias Parameter Files (BPFs) supply radiometric correction parameters that are applied during Level-1 processing of Landsat data. Learn more (and search for BPF files): Landsat Bias Parameter

What are Landsat Calibration Parameter Files?

Landsat Calibration Parameter Files (CPFs) provide radiometric and geometric coefficients needed for processing of raw, uncorrected Landsat image data into Level-1 data products. Over 15,000 coefficients are issued to span distinct timeframes and are updated with improved calibration coefficients. CPFs are often updated with improved coefficients...

What is the Landsat Collections Saturation Bits parameter?

The Landsat Collection 1 Level-1 product metadata (MTL.txt) file includes a SATURATION_BAND_ x” parameter for each Landsat band. This field indicates the presence of radiometric saturation for each band in every Landsat scene. Learn more: Landsat Collections Level-1 Saturation Bits Parameter

What is the Landsat Collections Angle Coefficient file and how is it used?

The Landsat Collection 1 Angle Coefficient file provides sensor viewing angle model coefficients that can be used to create angle bands, and allows users to compute the solar and sensor viewing angles on a per-pixel basis. Learn more: Solar Illumination and Sensor Viewing Angle Coefficient Files

How do I rescale Landsat Level-1 digital numbers to reflectance, radiance, and brightness temperature?

Landsat Level-1 data can be rescaled to the top of atmosphere (TOA) reflectance and/or radiance using radiometric rescaling coefficients provided in the metadata file (MTL.txt) that is delivered with the Landsat Level-1 product. The MTL file also contains the thermal constants needed to convert thermal band data to TOA brightness temperature (BT...
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April 18, 2018

Landsat in Action - The Accuracy of Landsat with Jeff Masek

Landsat 9 Project Scientist Jeff Masek discusses the ways Landsat data is used and how important it is to have high quality data.
 

February 27, 2018

Landsat's Calibration and Validation

Engineers and scientists from both Landsat and Sentinel missions are working together to calibrate observation data and validate its quality to improve the science using these resources.
 

December 31, 2017

Landsat Collections

Landsat Collections: Providing a Stable Environmental Record for Time Series Analysis

This video introduces the new U.S. Geological Survey (USGS) Landsat Collection 1 inventory structure. Collection 1 required the reprocessing of all archived Landsat data to achieve radiometric and geometric consistency of Level-1 products through time and across all Landsat sensors

September 19, 2017

Landsat Collections — What are Tiers?

This is the third video in a series describing the new U.S. Geological Survey (USGS) Landsat Collection 1 inventory structure. Collection 1 required the reprocessing of all archived Landsat data to achieve radiometric and geometric consistency of Level-1 products through time and across all Landsat sensors. This video explains how Landsat Collection Level-1 data products

Aug 2013 Response Linearization Look Up Tables (RLUT) Update - Band 7

Aug 2013 Response Linearization Look Up Tables Update - Band 7

An update to the Response Linearization Look Up Tables (RLUT) on August 9, 2013 decreases the striping that was initially seen within the Landsat 8's SWIR2 (Band 7) spectral band. 

See https://www.usgs.gov/land-resources/nli/landsat/landsat-8-oli-and-tirs-c...

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Landsat 8 Response Linearization Look Up Tables (RLUT) Update

Landsat 8 Response Linearization Look Up Tables (RLUT) Update

Band 6 (~5% reflectance). Original Response Linearization Look Up Tables (RLUT) inputs (left); Updated RLUT inputs (right). Each image has been radiometrically stretched to show the effect of the updated calibration parameters.

See https://www.usgs.gov/land-resources

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Aug 2013 Response Linearization Look Up Tables Update Close up - Band 6

Aug 2013 Response Linearization Look Up Tables Update Close up

An update to the Response Linearization Look Up Tables (RLUT) on August 9, 2013 decreases the striping that was initially seen within the Landsat 8's SWIR1 (Band 6) spectral band. 

See https://www.usgs.gov/land-resources/nli/landsat/landsat-8-oli-and-tirs-c...

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