Description

In the specification and selection of spectral bands and detectors for optical remote sensing instruments, important consideration must be given to the primary scientific applications of the data. In this study, the line-by-line atmospheric code FASCODE and a Lincoln-developed detector model are used to identify the spectral band extent and peak location for Hg1-x,CdxTe detector responsivity that result in the highest sounding sensitivity to atmospheric temperature and water vapor. The goal of this work was to minimize the background photon level that contributes to noise by reducing the spectral band extent and to relocate the peak detector response to the spectral region of greatest interest. An optimization score for each wavelength was computed as the product of terms accounting for sensitivity to the parameter of interest (temperature or water vapor) and insensitivity to the other, normalized by the product of the detector noise and the vertical height of the atmospheric contribution function. By examining the optimization score as a function of wavelength, reduced spectral coverage was seen to be possible without sacrificing sounding sensitivity. These reductions, along with the movement of the detector peak to above the spectral band low wavenumber edge, allowed an improvement of 15 to 33% in noise level and 10 to 15% in sounding performance as compared to the original specification (Refer to PDF file for exact formulas).

Date of creation, presentation, or exhibit

8-8-1994

Comments

Proceedings of IEEE International Geoscience and Remote Sensing Symposium (1994) 2442-2444 "Spectral band and detector optimization for atmospheric sounding interferometers," Proceedings of the IEEE International Geoscience and Remote Sensing Symposium. Institute of Electrical and Electronics Engineers (IEEE). Held in Pasadena, California: 8-12 August 1994. ©1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. This work was sponsored by the National Oceanic and Atmospheric Administration under Air Force Contract F19628-90-C-0002. ISBN: 078-03-1497-2Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Proceeding

Department, Program, or Center

Chester F. Carlson Center for Imaging Science (COS)

Campus

RIT – Main Campus

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