Verification and characterization of an autotracking solar radiometer

John Henry LaMarr; Kurtis J. Thome; Paul R. Spyak

doi:10.1117/12.283812

18 September 1997 Verification and characterization of an autotracking solar radiometer

John Henry LaMarr, Kurtis J. Thome, Paul R. Spyak

Proceedings Volume 3117, Earth Observing Systems II; (1997) https://doi.org/10.1117/12.283812
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

A spectral polarimeter with an autotracking mount to obtain atmospheric parameters required for the vicarious calibration of satellite sensors has been modified to work with anew computer and electronic components. The instrument has 12 bands covering the visible through the short-wave IR. There are 9 bands from 400 nm to 1100 nm which use a silicon detector, and 3 bands from 1100 nm to 2500 nm which use a temperature-stabilized, lead-sulfide detector. The instrument's operation was verified by using it as a solar radiometer and collecting Langley plot data. These were compared to data taken concurrently by a well-characterized, manually-pointed radiometer with 10 visible and near-IR channels. In addition, the effect of the gaseous transmittance on the retrieved optical depths of the short- wave IR bands are presented. The data are obtained by finding the band-averaged transmittance for each filter under several atmospheric and view conditions using the output from MODTRAN3.

Citation Download Citation

John Henry LaMarr, Kurtis J. Thome, and Paul R. Spyak "Verification and characterization of an autotracking solar radiometer", Proc. SPIE 3117, Earth Observing Systems II, (18 September 1997); https://doi.org/10.1117/12.283812

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