基于二体理论的远程拦截中制导修正

doi:10.3969/j.issn.1001-506X.2020.08.21

Abstract

Abstract:

Aiming at the combat situation when the handover area of hypersonic target interceptor is high in the near space, referencing to the theory of orbit interception, based on the high throw and reentry interceptor trajectory and take interceptor as two body model, a long-range interceptor guidance algorithm is designed. Firstly, the complex motion model is simplified, and according to the force analysis, the model is transformed into a two body orbit model. Then, by using the track angle iteration method, the Lambert problem is solved, and the orbit change required speed is obtained. It is proposed to adjust the speed to the required speed of the orbit change to complete the intercepting task in the orbit model. Finally, because of the limited thrust, the maneuverability of the interceptor in transition period is analyzed, and the method of velocity gain guidance is proposed to solve the problem. The simulation results show that it is feasible to use the two body orbit model to represent the motion model of the interceptor under the condition of weak aerodynamic force in the high altitude domain. The speed gain guidance algorithm can not only solve the transition period maneuver problem effectively, but also has good convergence in predicting the change of interceptor points, so as to complete the medium guidance interception task in the near space.

Key words: near space, midcourse guidance, velocity gain guidance, trajectory correction, two body theory

CLC Number:

V448

Wenyu CHEN, Lei SHAO, Humin LEI, Changxin LUO, Tao ZHANG. Mid-course guidance modification of super-range interception based on two body theory[J]. Systems Engineering and Electronics, 2020, 42(8): 1804-1811.

Figures/Tables 11

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References 24

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初始速度v₀/(m/s)	终端偏差A/km	全过程偏差B/km
2 000	0.797	0.147
2 200	0.849	0.170
2 400	0.901	0.195
2 600	0.957	0.222
2 800	1.015	0.252
3 000	1.077	0.284
3 200	1.141	0.319
3 400	1.210	0.357

初始倾角?₀/(°)	制导误差/km	开机时长/s
0	0.001 36	50.8
3	0.003 29	46.1
5	0.003 28	43.6
10	0.004 72	39.8
15	0.004 14	40.7
20	0.003 57	45.9
25	0.008 94	53.9

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Mid-course guidance modification of super-range interception based on two body theory

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