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Journal of Applied Remote Sensing

Assessment of the spectral stability of Libya 4, Libya 1, and Mauritania 2 sites using Earth Observing One Hyperion
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Paper Abstract

The objective of this paper is to formulate a methodology to assess the spectral stability of the Libya 4, Libya 1, and Mauritania 2 pseudo-invariant calibration sites (PICS) using Earth Observing One (EO-1) Hyperion sensor. All the available Hyperion collections, downloaded from the Earth Explorer website, were utilized for the three PICS. In each site, a reference spectrum is selected at a specific day in the vicinity of the region of interest (ROI) defined by Committee on Earth Observation Satellites (CEOS). A series of ROIs are predefined in the along-track direction with 196 spectral top-of-atmosphere reflectance values in each ROI. Based on the reference ROI spectrum, the spectral stability of these ROIs is evaluated by average deviations (ADs) and spectral angle mapper (SAM) methods in the specific ranges of time and geo-spatial locations. Time and ROI location-dependent SAM and AD results are very stable within ±2  deg and ±1.7% of standard deviations. Consequently, the Libya 4, Mauritania 2, and Libya 1 CEOS selected PICS are spectrally stable targets within the time and spatial swath ranges of the Hyperion collections.

Paper Details

Date Published: 6 June 2014
PDF: 14 pages
J. Appl. Remote Sens. 8(1) 083618 doi: 10.1117/1.JRS.8.083618
Published in: Journal of Applied Remote Sensing Volume 8, Issue 1
Show Author Affiliations
Taeyoung J. Choi, Sigma Space Corp. (United States)
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)
Amit Angal, Science Systems and Applications, Inc. (United States)
Gyanesh Chander, NASA Goddard Space Flight Ctr. (United States)
John J. Qu, George Mason Univ. (United States)


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