Narrow-Field Radiometry In A Quasi-Isotropic Atmosphere

Alan Holmes; James M. Palmer; Martin G. Tomasko

doi:10.1117/12.957953

15 November 1979 Narrow-Field Radiometry In A Quasi-Isotropic Atmosphere

Alan Holmes, James M. Palmer, Martin G. Tomasko

Proceedings Volume 0196, Measurements of Optical Radiations; (1979) https://doi.org/10.1117/12.957953
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

If a radiometer having a narrow field of view is used to measure the radiance of a source such as a quasi-isotropic atmosphere, a knowledge of the out-of-field responsivity is critical. For example, if a radiometer with a field of view of 5° (full-angle) has a relative responsivity of 10-4 for the out-of-field radiation, the contribution of the out-of-field radiation (assuming an isotropic source subtending 27 steradians) is 102% of the total signal. Either the stray light suppression of the radiometer must be extremely high or methods of determining the out-of-field response must be developed. A description of one method of determining the effect of out-of-field response and its application to a planetary atmospheric radiometer is presented.

Citation Download Citation

Alan Holmes, James M. Palmer, and Martin G. Tomasko "Narrow-Field Radiometry In A Quasi-Isotropic Atmosphere", Proc. SPIE 0196, Measurements of Optical Radiations, (15 November 1979); https://doi.org/10.1117/12.957953

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