Open AccessNear space interceptor on-line correction research based on predictive intercept point
Author(s) -
Wenyu Chen,
Lei Shao,
Lulu Chen,
Shili Tan,
Shijie Li
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/4/042021
Subject(s) - trajectory , gauss pseudospectral method , range (aeronautics) , control theory (sociology) , point (geometry) , model predictive control , line (geometry) , trajectory optimization , point target , computer science , optimal control , pseudo spectral method , mathematics , mathematical optimization , control (management) , artificial intelligence , aerospace engineering , engineering , physics , fourier analysis , geometry , fourier transform , astronomy , mathematical analysis
Aiming at the problem of large maneuvering range and difficult target detection of hypersonic target in the near space, according to the maneuvering range of predictive intercept point (PIP), this paper proposes a method to select different correction algorithms. First, The Gauss pseudospectral method is used to solve the trajectory optimization problem and the off-line optimal trajectory is generated. Then, aiming at the situation that the range of predictive intercept point is small, based on neighboring optimal control, the on-line correction method is used to find out the optimal trajectory near the off-line optimal trajectory. Finally, when the interceptor is located in a high airspace, aiming at the situation that the range of target motion is wide and the range of predictive intercept point is large, a direct force correction method based on velocity gain guidance is adopted. Simulation results verify the effectiveness of the proposed methods.