Systems Engineering and Electronics ›› 2022, Vol. 44 ›› Issue (6): 1968-1976.doi: 10.12305/j.issn.1001-506X.2022.06.24

• Guidance, Navigation and Control • Previous Articles     Next Articles

Trajectory prediction of boost-phase ballistic missile based on LSTM

Ruiping JI1,2, Chengyi ZHANG1,2, Yan LIANG1,2,*, Yuedong WANG1,2   

  1. 1. School of Automation, Northwestern Polytechnical University, Xi'an 710072, China
    2. Key Laboratory of Information Fusion Technology, Ministry of Education, Xi'an 710072, China
  • Received:2021-08-16 Online:2022-05-30 Published:2022-05-30
  • Contact: Yan LIANG

Abstract:

Long term trajectory prediction for boost-phase ballistic missile (BM) can provide early warning information for the missile defense system. Traditional trajectory prediction methods mostly focus on the BM's coast and reentry phases, inferring the target state at future time through analytical, numerical integration or function approximation methods. In contrast, the boost-phase trajectory prediction is more challenging because there are many unknown forces acting on the BM during this stage. To this end, a long short-term memory (LSTM) network based boost-phase BM trajectory prediction method is proposed in this paper. Specifically, large-scale trajectory samples for the network training are generated first according to the dynamic model of the boost-phase BM and the typical ballistic parameters. Next, a recursive trajectory prediction method for the boost-phase BM based on deep LSTM network is designed. Finally, simulation results compared with the numerical integration, polynomial fitting and back propagation neural network based trajectory prediction methods show the superiority of the proposed method in long term boost-phase BM trajectory prediction.

Key words: ballistic missile, trajectory prediction, long short-term memory (LSTM) network, boost-phase trajectory

CLC Number: 

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