Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 5, pp. 85-96
The effect of outer space radiation on the operation of BOKZ devices during their long-term operation
R.V. Bessonov
1 , A.A. Kobeleva
1 , A.N. Kurkina
1 , A.K. Malkov
1 , A.A. Forsh
1 1 Space Research Institute RAS, Moscow, Russia
Accepted: 04.10.2019
DOI: 10.21046/2070-7401-2019-16-5-85-96
The work is devoted to a review of events caused by the influence of radiation factors of outer space on stellar orientation devices of the BOKZ family. These devices are widely used and currently have a total flying time of more than 2.8 million hours in space. So long operating time of devices, of course, was accompanied by the occurrence of events and effects caused by the influence of cosmic radiation. The paper describes the effects that can occur in BOKZ devices when they work in space. It is shown that the main effect of space radiation during long-term operation of devices in space is caused by structural damage in the CCD of devices. For near-Earth spacecraft, structural effects arise mainly due to the action of protons captured by the Earth’s radiation belts, and therefore the dose of structural damage strongly depends on the satellite’s orbit. The paper describes the results of data analysis from nine spacecraft located in different orbits. In addition, the article presents the results of radiation tests of CCD and CMOS matrices both on the effects of ionization radiation and on the effects of a heavy charged particle and high-energy protons. The paper provides methods to minimize the effect of radiation on the photosensitive matrices of BOKZ devices.
Keywords: star tracker, astrometry, radiation resistance, effects outer space
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