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27 September 2007 LED Spectrometer (LSpec) autonomous vicarious calibration facility
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A new method of performing vicarious calibration of Visible-Near Infrared (VNIR) sensors has been developed which does not require the manual efforts of a field team to capture surface and atmospheric measurements. Instead, an array of unattended sensors captures the required data on a near continuous basis for recording to a web-based retrieval system. The LSpec (LED Spectrometer) facility, located at Frenchman Flat at the Nevada Test Site, began initial operations in November 2006. The LSpec sensors measure surface reflectance at several VNIR bands, and the accompanying atmospheric measurements allow the production of top-of-atmosphere radiance estimates to calibrate space-borne sensor products. Data are distributed via the Internet, and are available to the calibration community. This paper describes the test site, web-access to the data, and makes use of these data to compute top-of-atmosphere radiance (TOA) and compare to those from the Multi-angle Imaging SpectroRadiometer (MISR) imagery.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mark C. Helmlinger, Carol J. Bruegge, Ethan H. Lubka, and Harry N. Gross "LED Spectrometer (LSpec) autonomous vicarious calibration facility", Proc. SPIE 6677, Earth Observing Systems XII, 66770V (27 September 2007);

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