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�������պ����ѧѧ�� 2009, Vol. 35 Issue (5) :596-599    DOI:
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������Ⱥ�㷨��Powell����Lambertת��
��С��, ���Ʒ�, �ս���*
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Lambert transfer based on ant colony algorithm and Powell-s method
Gao Xiaobo, Dong Yunfeng, Su Jianmin*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� The optimization of Lambert two-impulse orbital transfer with unfixed two impulses time was studied. The goal was to find the optimal two impulses time to minimize the weighted sum of consumed fuel and transfer time. Because traditional optimization algorithms were difficult to get global optimal results of the problem, an optimization algorithm which combines ant colony algorithm (ACA) and Powell-s method was then proposed. The new algorithm combined global search capacity of ACA and local search capacity of Powell-s method. It not only provided the global search capacity, but also improved the local search capacity and reduced the search time. Two examples were computed in the end. The results indicate that the optimization algorithm is valid to solve the optimal orbital transfer problem and the optimization is accurate.
Keywords�� impulse   orbital transfer   optimization     
Received 2008-08-10;
About author: ��С��(1982-),��,���ϼ�����,˶ʿ��,gaoxb1982@gmail.com.
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��С��, ���Ʒ�, �ս���.������Ⱥ�㷨��Powell����Lambertת��[J]  �������պ����ѧѧ��, 2009,V35(5): 596-599
Gao Xiaobo, Dong Yunfeng, Su Jianmin.Lambert transfer based on ant colony algorithm and Powell-s method[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(5): 596-599
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2009/V35/I5/596
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