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�������պ����ѧѧ�� 2011, Vol. 37 Issue (7) :757-761    DOI:
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Optimization method of finite thrust emergency orbit maneuver for an earth observation satellite
Yu Peijun, Wang Wei, Li Jiancheng*
School of Aerospace, Northwestern Polytechnical University, Xi-an 710072, China

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Abstract�� The optimal emergency orbit maneuver method for an earth observation satellite was studied, which uses the finite thrust model. The mission requirement of the emergency orbit maneuver was investigated firstly. A twice orbital maneuver technique was adequately chosen to make the algorithm universal. The finite thrust dynamic equation in the three-dimensional space that considering the J2 perturbation was derived. The time variable-s span was given by solving the Lambert-s problem. The genetic algorithm was used as the optimization method to get a time optimal result. An emulation example was given to verify the method. The result shows the method has a high precise and can be get in a short time so it is available for the emergency orbit maneuver mission.
Keywords�� emergency orbit maneuver   finite thrust   Lambert algorithm   genetic algorithms     
Received 2010-09-10;
About author: �����(1966-),��,����ȷɽ��,�о�Ա,prince_xscc@vip.163.com.
�����, ��ά, ���.�Եع۲����������������ٹ�������Ż�����[J]  �������պ����ѧѧ��, 2011,V37(7): 757-761
Yu Peijun, Wang Wei, Li Jiancheng.Optimization method of finite thrust emergency orbit maneuver for an earth observation satellite[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(7): 757-761
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