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An assessment of African test sites in the context of a global network of quality-assured reference standards

By:
, , , and
DOI: 10.1109/IGARSS.2009.5417687

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Abstract

The Committee on Earth Observation Satellites (CEOS) Infrared and Visible Optical Sensors (IVOS) subgroup members established a set of CEOS-endorsed globally distributed reference standard test sites for the postlaunch calibration of space-based optical imaging sensors. This paper discusses the top five African pseudo-invariant sites (Libya 4, Mauritania 1/2, Algeria 3, Libya 1, and Algeria 5) that were identified by the IVOS subgroup. This paper focuses on monitoring the long-term radiometric stability of the Terra Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+) sensors using near-simultaneous and cloud-free image pairs acquired from launch to December 2008 over the five African desert sites. Residual errors and coefficients of determination were also generated to support the quality assessment of the calibration differences between the two sensors. An effort was also made to evaluate the relative stability of these sites for long-term monitoring of the optical sensors. ??2009 IEEE.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
An assessment of African test sites in the context of a global network of quality-assured reference standards
ISBN:
9781424433957
DOI:
10.1109/IGARSS.2009.5417687
Volume
5
Year Published:
2009
Language:
English
Larger Work Title:
International Geoscience and Remote Sensing Symposium (IGARSS)
Conference Title:
2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
Conference Location:
Cape Town
Conference Date:
12 July 2009 through 17 July 2009