SAGE III test model: ground-based coincident measurements with the SAGE III flight instruments and field characterization measurements

Details SAGE III test model: ground-based coincident measurements with the SAGE III flight instruments and field characterization measurements SAGE III test model: ground-based coincident measurements with the SAGE III flight instruments and field characterization measurements

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4485..135v&link_type=abstract

Proc. SPIE Vol. 4485, p. 135-141, Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Spac

Computer Science

Performance

Scientific paper

Five functional UV-VIS-NIR spectrometer/telescopes were built for the Stratospheric Aerosol and Gas Experiment III (SAGE III) satellite instrument project. Three will be on satellite platforms in the early part of the decade, and a fourth, the SAGE III Test Model (TM) is functioning as a ground-based instrument. The fifth is used as a software test-bed to support Mission Operations for the space instruments. The SAGE III instrument is spatially scanning UV-VIS-NIR holographic grating spectrometer using a cooled CCD detector. This paper presents performance results from the TM instrument. The TM instrument has been used in cross calibration studies during which one of the SAGE III flight instruments directly sampled the Sun, Moon, and twilight sky from the ground. Comparisons of SNRs, and relative responsivities are presented. TM zenith twilight spectra and measurement sensitivities are presented including a comparison of its twilight radiance measurements with the MODTRAN 3.7 atmospheric radiance/transmittance model. In addition the TM results of sampling planetary and stellar spectra are presented.

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