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Landsat 8 Operational Land Imager On-Orbit Geometric Calibration and Performance
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Remote Sens. 2014, 6(11), 11153-11181; doi:10.3390/rs61111153

Landsat 8 Thermal Infrared Sensor Geometric Characterization and Calibration

Stinger Ghaffarian Technologies, Contractor to the U.S. Geological Survey Earth Resources Observation and Science Center (EROS), 47914 252nd Street, Sioux Falls, SD 57198, USA
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Received: 29 July 2014 / Revised: 23 October 2014 / Accepted: 4 November 2014 / Published: 11 November 2014
(This article belongs to the Special Issue Landsat-8 Sensor Characterization and Calibration)
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Abstract

The Landsat 8 spacecraft was launched on 11 February 2013 carrying two imaging payloads: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). The TIRS instrument employs a refractive telescope design that is opaque to visible wavelengths making prelaunch geometric characterization challenging. TIRS geometric calibration thus relied heavily on on-orbit measurements. Since the two Landsat 8 payloads are complementary and generate combined Level 1 data products, the TIRS geometric performance requirements emphasize the co-alignment of the OLI and TIRS instrument fields of view and the registration of the OLI reflective bands to the TIRS long-wave infrared emissive bands. The TIRS on-orbit calibration procedures include measuring the TIRS-to-OLI alignment, refining the alignment of the three TIRS sensor chips, and ensuring the alignment of the two TIRS spectral bands. The two key TIRS performance metrics are the OLI reflective to TIRS emissive band registration accuracy, and the registration accuracy between the TIRS thermal bands. The on-orbit calibration campaign conducted during the commissioning period provided an accurate TIRS geometric model that enabled TIRS Level 1 data to meet all geometric accuracy requirements. Seasonal variations in TIRS-to-OLI alignment have led to several small calibration parameter adjustments since commissioning. View Full-Text
Keywords: Landsat 8; Thermal Infrared Sensor; geometric calibration; band registration accuracy Landsat 8; Thermal Infrared Sensor; geometric calibration; band registration accuracy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Storey, J.; Choate, M.; Moe, D. Landsat 8 Thermal Infrared Sensor Geometric Characterization and Calibration. Remote Sens. 2014, 6, 11153-11181.

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