| Citation: | XIANG Kaiheng, LI Renjie, CHEN Yanget al. Launch window of space fly-by based on surrogate model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2613-2620. doi: 10.13700/j.bh.1001-5965.2018.0264(in Chinese)
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In order to analyze the influence of initial positions on the launch window in space fly-by problem efficiently, the process of space fly-by was studied firstly in this paper. Then, a numerical method to calculate the launch window under different initial conditions was proposed. For improving calculation efficiency, surrogate model technology was studied, including sample points selection methods, surrogate models construction methods, and accuracy assessment methods. On the basis, two models, radial basis function (RBF) model and Kriging model, were compared. The results show that RBF model is more accurate for the problem in this paper. So it was applied to calculate launch windows under different conditions, which costs only 0.29% of the time that the true model costs, and the accuracy meets requirement. The results prove that using surrogate models can efficiently analyze the influence of initial conditions on the launch window, which will provide valuable theoretical foundation and reference for the orbital planning and design of space fly-by missions.
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