Electronics and Electrical Engineering and Control

Time-cooperative entry guidance based on analytical profile

  • WANG Xiao ,
  • GUO Jie ,
  • TANG Shengjing ,
  • QI Shuai
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  • School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Received date: 2018-07-26

  Revised date: 2018-08-15

  Online published: 2018-11-14

Supported by

National Natural Science Foundation of China (11572036);Graduate Technological Innovation Project of Beijing Institute of Technology (2018CX10011)

Abstract

Aiming at the time-cooperative guidance problem for hypersonic gliding vehicles in the entry phase, a predictor-corrector cooperative guidance law based on altitude-velocity profile is proposed. Firstly, the reference trajectory is designed in the altitude-velocity profile, and the range-to-go and time-to-go are predicted online using two trajectory parameters. The two trajectory parameters are corrected by numerical algorithm to meet the range and time constraints and the actual control input is obtained. Combined with the lateral heading angle corridor, the time-constrained entry guidance is implemented for a single vehicle. On this basis, the adjustable range of the flight time of a single vehicle is analyzed. The coordination flight time and the coordination strategy are designed for multi-vehicle coordinated entry mission, realizing the time-cooperative entry flight. This strategy considers the communication difficulties in the entry process, avoids the communication between vehicles, and makes full use of the longitudinal dynamics of the vehicle, making the controllable range of flight time larger, which is more suitable for actual entry flight. Simulation results illustrate the time-controllability of the time-constrained entry guidance and the effectiveness of the coordination strategy.

Cite this article

WANG Xiao , GUO Jie , TANG Shengjing , QI Shuai . Time-cooperative entry guidance based on analytical profile[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019 , 40(3) : 322565 -322565 . DOI: 10.7527/S1000-6893.2018.22565

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