Preliminary assessment of several parameters to measure and compare usefulness of the CEOS reference pseudo-invariant calibration sites

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Abstract

Test sites are central to any future quality assurance and quality control (QA/QC) strategy. The Committee on Earth Observation Satellites (CEOS) Working Group for Calibration and Validation (WGCV) Infrared Visible Optical Sensors (IVOS) worked with collaborators around the world to establish a core set of CEOS-endorsed, globally distributed, reference standard test sites (both instrumented and pseudo-invariant) for the post-launch calibration of space-based optical imaging sensors. The pseudo-invariant calibration sites (PICS) have high reflectance and are usually made up of sand dunes with low aerosol loading and practically no vegetation. The goal of this paper is to provide preliminary assessment of "several parameters" than can be used on an operational basis to compare and measure usefulness of reference sites all over the world. The data from Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+) and the Earth Observing-1 (EO-1) Hyperion sensors over the CEOS PICS were used to perform a preliminary assessment of several parameters, such as usable area, data availability, top-of-atmosphere (TOA) reflectance, at-sensor brightness temperature, spatial uniformity, temporal stability, spectral stability, and typical spectrum observed over the sites.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Preliminary assessment of several parameters to measure and compare usefulness of the CEOS reference pseudo-invariant calibration sites
DOI 10.1117/12.865166
Volume 7826
Year Published 2010
Language English
Publisher SPIE
Contributing office(s) Earth Resources Observation and Science (EROS) Center
Description 12 p.
Larger Work Type Conference Paper
Larger Work Title SPIE Proceedings Volume 7826
Conference Title Sensors, Systems, and Next-Generation Satellites XIV
Conference Location Toulouse, France
Conference Date September 20, 2010
Online Only (Y/N) N
Additional Online Files (Y/N) N