Physics
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esasp.200..471d&link_type=abstract
In ESA Environ. and Thermal Control Systems for Space Vehicles p 471-476 (SEE N84-19396 10-18)
Physics
Infrared Telescopes, Monte Carlo Method, Radiative Heat Transfer, Satellite-Borne Instruments, Terrestrial Radiation, Earth Surface, Flat Plates, Radiation Effects, View Effects
Scientific paper
A Monte Carlo method was employed to calculate Earth radiation absorbed by the German Infrared Laboratory spaceborne telescope, which has a highly specularly reflecting surface. For precise calculations the Earth cannot be simulated by a sphere in the standard approach, so equations which exactly provide the radiations from single Earth surface elements incident upon a flat plate were used. The deduction of these equations by Nusselt's projection method is outlined. It is proposed to replace the square-of-the-distance law by the equations. They can be incorporated in programs that also consider planetary radiations.
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