An assessment of African test sites in the context of a global network of quality-assured reference standards
By: G. Chander, X. Xiong, A. Angal, and T. Choi
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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.
Suggested Citation
Chander, G., Xiong, X., Angal, A., and Choi, T., 2009, An assessment of African test sites in the context of a global network of quality-assured reference standards, in International Geoscience and Remote Sensing Symposium (IGARSS), v. 5, Cape Town, South Africa, July 12-17, 2009, p. V-236-V-239, https://doi.org/10.1109/IGARSS.2009.5417687.
Study Area
| 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 |
| DOI | 10.1109/IGARSS.2009.5417687 |
| Volume | 5 |
| Year Published | 2009 |
| Language | English |
| Publisher | IEEE |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 5 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Monograph |
| Larger Work Title | International Geoscience and Remote Sensing Symposium (IGARSS) |
| First page | V-236 |
| Last page | V-239 |
| Conference Title | 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 |
| Conference Location | Cape Town, South Africa |
| Conference Date | July 12-17, 2009 |
| Country | Algeria, Libya, Mauritania |