Orbit Design and Pointing Ahead Angle for ASTROD1

Details Orbit Design and Pointing Ahead Angle for ASTROD1 Orbit Design and Pointing Ahead Angle for ASTROD1

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pnaoc...4..243s&link_type=abstract

Astronomical Research and Technology. Publications of National Astronomical Observatories of China (ISSN 1672-7673), Vol. 4, No.

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Orbit Design, Pointing Ahead, Laser Astrodynamics

Scientific paper

As the first step of ASTROD (Astrodynamical Space Test of Relativity using Optical Devices), ASTROD1 is one spacecraft launched to a solar orbit to test the experimental schemes for ASTROD and to meet important scientific goals. Because a laser beam ist transmitted to the spacecraft which will be near the other side of the sun and the laser takes about 1000 s from a ground station to the S/C, the Telescope Pointing Ahead needs to be considered. The orbit simulation, the way to judge the orbit precision, the relation between the Telescope Pointing Ahead and the position of the Earth and the spacecraft are presented in this paper.

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