УДК: 528.8, 536.33

Technique for recognizing space objects of flat and convex shape from their thermal self-radiation in the earth’s shadow

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Дзитоев А.М., Ханков С.И. Методика распознавания космических объектов плоской и выпуклой формы по их собственному тепловому излучению в тени Земли // Оптический журнал. 2015. Т. 82. № 4. С. 32–40.

Dzitoev A.M., Khankov S.I. Technique for recognizing space objects of flat and convex shape from their thermal self-radiation in the earth’s shadow [in Russian] // Opticheskii Zhurnal. 2015. V. 82. № 4. P. 32–40.

For citation (Journal of Optical Technology):

A. M. Dzitoev and S. I. Khankov, "Technique for recognizing space objects of flat and convex shape from their thermal self-radiation in the earth’s shadow," Journal of Optical Technology. 82(4), 220-226 (2015). https://doi.org/10.1364/JOT.82.000226

Abstract:

A technique has been developed for calculating the intensities of the thermal self-radiation of a space object in the form of a flat face in the viewing direction as a function of its tilt angle to the plane of the local horizon in the earth’s shadow. The main laws governing the formation of the temperatures and radiant intensities of such an object as they depend on the altitude above the earth’s surface are compared with the characteristics inherent in a spherical object. It is shown that a flat object can be remotely distinguished from an object of spherical shape on the basis of the detected regularities. In terms of physically valid limitations, a technique is proposed for remotely determining the characteristic size of a flat face, based on a comparison of the recorded radiation fluxes with the radiation fluxes of a spherical reference object in two spectral ranges and from two observation aspects.

Keywords:

space object, radiant intensities, irradiance coefficient, thermal regime, radiant heat transfer, Earth shine

OCIS codes: 010.5620, 120.4820, 120.6780, 350.6090

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