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�������պ����ѧѧ�� 2008, Vol. 34 Issue (06) :665-668    DOI:
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��, Фҵ��*
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Autonomous orbit determination and precise measurement of relative position of formation constellation
Ma Jun, Xiao Yelun*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� A fully autonomous, highly precise method of orbit determination and measurement of relative position for formation constellation was proposed, and the basic scheme, its feasibility and engineering specifications of space absolute orientation——one of the key techniques of autonomous orbit determination were studied. Lastly, validation by using of simulation was carried out. The simulation results indicate that fully autonomous navigation of formation constellation without supports from ground stations and satellite navigation system can be realized by means of highly precise measurement of distance and absolute orientation observation between satellites in the formation constellation; And at the certain error conditions of distance and orientation measurement, the precision of absolute orbit determination can be better than 20�]m and precision of relative position measurement can be better than 10�]cm; Relative error has obvious relationship with sampling interval time, and this interval time is recommended to be selected within 10�]s; Absolute positioning error does not have obvious relationship with sampling interval time, and the main error source is the whole parallel transformation of constellation. The simulation results validate the correctness of proposed scheme.
Keywords�� formation constellation   autonomous orbit determination   space absolute orientation   relative position measurement     
Received 2007-05-22;
About author: �� ��(1964��),��,����������,��ʿ��,julianma@263.net.cn.
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Ma Jun, Xiao Yelun.Autonomous orbit determination and precise measurement of relative position of formation constellation[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(06): 665-668
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I06/665
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