![]() ![]() 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. ![]() ![]() Time and ROI location-dependent SAM and AD results are very stable within +/- 2 deg and +/- 1.7% of 1sigma standard deviations. 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. A series of ROIs are predefined in the along-track direction with 196 spectral top-of-atmosphere reflectance values in each ROI. 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). All the available Hyperion collections, downloaded from the Earth Explorer website, were utilized for the three PICS. 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. Assessment of the Spectral Stability of Libya 4, Libya 1, and Mauritania 2 Sites Using Earth Observing One HyperionĬhoi, Taeyoung Xiong, Xiaoxiong Angal, Amit Chander, Gyanesh Qu, John J. ![]()
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