Applied Sciences, Vol. 13, Pages 6661: Correction Strategy of Online Midcourse Guidance for High-Speed Gliding Target Interceptor

Applied Sciences, Vol. 13, Pages 6661: Correction Strategy of Online Midcourse Guidance for High-Speed Gliding Target Interceptor

Applied Sciences doi: 10.3390/app13116661

Authors:
Wenyu Chen
Weimin Li
Lei Shao
Tao Zhang

During the interception of a high-speed gliding vehicle (HGV), the predicted intercept point (PIP) is updated many times, so the interceptor must continuously adjust its trajectory. In this paper, we propose an online guidance correction algorithm for the interceptor, which can effectively meet the position constraints and energy management of the guidance process. Firstly, we simplify the interceptor’s maneuvering problem to a two-body orbital transfer problem. The Lambert orbit transfer method is used to enable the interceptor to maneuver towards the target’s PIP. Secondly, by comparing the target’s high probability existence area (THPEA) with the interceptor-interceptable area (IIA), the engine start threshold is set in stages to avoid frequent redundancy maneuvers caused by frequent engine starting during missile correction. This approach achieves energy management. Simulation results show that our midcourse guidance strategy is effective.

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