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Radiometer for remote sounding of the upper atmosphere. (1972)

Rodgers, C. D. ; Houghton, J. T. ; Peskett, G. D. ; [weitere]

In: Other Sources

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Publikationsdatum: 2011-08-16

Beschreibung: The pressure-modulated carbon dioxide radiometer is a new kind of instrument capable of making temperature soundings in the 40-80-km region of the earth's atmosphere. It is intended to be mounted on a polar-orbiting satellite, where it will give global coverage of the upper atmosphere in a region that is not well understood at present but that is, as rocket soundings show, clearly the seat of many interesting and vigorous phenomena. The new technique employs a cell containing carbon dioxide as a filter. The pressure and hence transmission of this cell is periodically modulated, resulting in the selection of thermal radiation from the strong lines in the spectrum of atmospheric carbon dioxide. This radiation originates at levels in the atmosphere where the pressure is low. The energy grasp of the device is large enough to give high sensitivity.

Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY

Materialart: Applied Optics; 11; Jan. 197

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2

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Infra-red measurements of stratospheric composition. I - The balloon instrument and water vapour measurements (1978)

Chaloner, C. P. ; Jarnot, R. F. ; Drummond, J. R. ; [weitere]

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Publikationsdatum: 2011-08-17

Beschreibung: The design and construction of a balloon-borne instrument for remote-sensing of stratospheric composition is described. Thermal emission from the constituents is detected and the spectral selectivity of the instrument is tailored to a specific gas by the use of a cell of the same gas in the optical path of the radiometer. The pressure of the gas in the cell is cycled and the resultant transmission function is shown to be highly selective to radiation from the same gas in the atmosphere. The first flight of the instrument and the retrieval of a water vapour profile in the range 15-40 km is described.

Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY

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3

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Infrared radiometer for the Pioneer Venus orbiter. I - Instrument description (1979)

Vescelus, F. E. ; Foster, G. T. ; Houghton, J. T. ; [weitere]

In: Other Sources

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Publikationsdatum: 2019-06-27

Beschreibung: A ten-channel IR radiometer for the Pioneer Venus orbiter is described. The experimental techniques used and the design of the instrumentation by which they were implemented are considered. Emphasis is placed on temperature sounding, limb sounding, limb darkening, zenith scanning, cloud top temperature, spectral albedo and water vapor measurements. Instrumentation description is also given including optics, detectors, and electronics. Attention is given to data acquisition and handling, calibration, and in-flight performance.

Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY

Materialart: Applied Optics; 18; Dec. 1

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