The response of moving radiometers |
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| Authors: | L P Herrington R E Leonard J E Hamilton G M Heisler |
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| Institution: | (1) N.Y. State College of Forestry, Syracuse, N.Y., USA;(2) Northeastern Forest Experiment Station, Syracuse, N.Y., USA;(3) Talcott Mountain Science Center, Inc., Avon, Conn., USA |
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| Abstract: | The output of a radiometer passing over a field of varying emittance or reflectance will not, in general, provide a faithful reproduction of the variations. The space-weighted averaging effect of the radiometer's hemispherical view plus the distortion produced by the first-order response of the radiometer sensor will result in low-pass filtering of the data. By means of a simplified model of the moving radiometer system, this paper provides guidelines for the interpretation of information from such systems. Faithful reproduction requires instruments with a fast time constant, operating close to the surface with a relatively slow speed of translation. |
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