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《Transactions of Beijing Institute of Technology》 2019-08
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Suboptimal Midcourse Trajectory Modification for Hypersonic Target Interception

ZHOU Jin;WANG Hua-ji;ZHAO Wei;ZHANG Da-yuan;LEI Hu-min;Air and Missile Defense College, Air Force Engineering University;PLA Unit 95948;  
Aimed at the hypersonic interception combat demand caused by the rapid developments of the near space vehicles, a suboptimal midcourse trajectory modification algorithm was designed based on model predictive static programming(MPSP).Firstly, analyzing the optimum conditions at the handover moment between the midcourse and terminal guidance, the zeroing effort interception condition was deduced according as the interceptor and target velocity ratio and their velocity heading angles. Secondly, introducing the proportional navigation as the terminal guidance law, the capture region of the terminal guidance was analyzed for the cases where the interceptor failed to satisfy the zeroing effort interception condition. The structure of the capture region was built in the plane composed of the interceptor and target velocity heading angles, serving as the constraints for the interceptor at handover moment. Thirdly, the Gauss pseudospectral method(GPM) was used to get the nominal optimal trajectory, satisfying the zeroing effort interception condition and the MPSP was introduced to modify the trajectory, considering the capture region constraints. Finally, the simulations were carried out to testify the rationality and effectiveness of the proposed method.
【Fund】: 国家自然科学基金资助项目(61573374 61503408)
【CateGory Index】: TJ765;V448
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Chinese Journal Full-text Database 1 Hits
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【Co-citations】
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1 ZHANG Xu;LEI Humin;LI Jiong;ZHAI Dailiang;Air and Missile Defense College,Air Force Engineering University;;Variable universe fuzzy adaptive sliding mode guidance law with finite time convergence[J];国防科技大学学报;2015-02
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