Instrument Information
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| IDENTIFIER |
urn:nasa:pds:context:instrument:pvmp.lp.lir::1.2
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| NAME |
Infrared Radiometer for Pioneer Venus Large Probe
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| TYPE |
Radiometer
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| DESCRIPTION |
The Large Probe Infrared Radiometer (LIR) of Pioneer Venus was used to measure the atmosphere thermal flux profile, detect cloud layers and infer their composition, and estimate the atmospheric water vapor content. The instrument, comprised of a six-channel calibrated radiometer, measured the radiance difference at plus/minus 45 degrees to the horizontal. It operated in the wavelength range from 3 to 50 microns. Two internal blackbodies were used to allow absolute measurements of the flux in each channel. The instrument weighed about 2 kg and used about 3 W of power.
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| MODEL IDENTIFIER |
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| NAIF INSTRUMENT IDENTIFIER |
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| SERIAL NUMBER |
not applicable
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| REFERENCES |
Boese, R. W., et al., The infrared radiometer on the sounder probe of the Pioneer Venus mission, IEEE Trans. Geosci. Rem. Sens., GE-18, No. 1, 97-99, doi:10.1109/TGRS.1980.350289, Jan. 1980
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