Аuthors

Vernigora L. V.^*, Kasmerchuk P. V.^**

Lavochkin Research and Production Association, NPO Lavochkin, 24, Leningradskay str., Khimki, Moscow region, 141400, Russia

*e-mail: vlv@laspace.ru
**e-mail: pavel.kazmerchuk@gmail.com

Abstract

The article considers the possibility of using a system consisting of an onboard radar and a corner reflector to ensure a high-precision landing in a selected area of the Moon. One of the possible landing schemes for a spacecraft on the Moon's surface is presented. According to the scheme, an onboard radar with a spiral scan of the Moon's surface, mounted on a rotating platform, is proposed to guide the radiation towards a corner reflector that has been placed at the intended landing point. The obtained measurements of the position of the corner reflector relative to the onboard coordinate system can be used to adjust the navigation task of the spacecraft control system during the main braking phase. The maximum detection range of the underlying surface has been determined, depending on the irradiation angle, as well as the maximum detection range of the corner reflector, depending on the size of the facets, for the specified parameters of the transceiver system. Calculations of the energy parameters of the signal were carried out to ensure the required oblique range of detection of the corner reflector. The accuracy of determining the coordinates of the corner reflector relative to the onboard coordinate system was estimated. The results obtained showed the fundamental possibility of using an onboard scanning radar and a corner reflector to ensure a high-precision landing in the selected area of the Moon.

Keywords:

Moon, on-board radar, corner reflector, high-precision landing

References

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