Research on the Omnidirectional Interception Guidance Law for High Speed Maneuvering Targets

Aiming to intercept high-speed maneuvering targets, nonlinear model was established and relative dynamic equations between the interceptor and the target were analyzed. An omni-directional true proportional navigation (OTPN) guidance law was developed. In high-speed target interception, OTPN guidance law has a wide capture region and can automatically shift interception mode. Formulary analysis proved that target maneuver has no effect on the expression form of OTPN guidance law. Without any additional conditions, OTPN guidance law can meet the requirement to intercepting high-speed maneuvering targets. Numerical simulation results showed that OTPN guidance law can effectively intercept high-speed maneuvering targets and its capture region is influenced by targets’ maneuver ability and initial LOS angle. The parameters of OTPN, such as capture region, ballistic characteristics, and overload variation and control efforts, show that OTPN are superior to traditional guidance schemes. Introduction Interception for maneuvering targets with high-speed is a formidable challenge, while the relative dynamic model between interceptor and target is a complicated and nonlinear model. Classical and modern guidance law both have difficulty in meeting the interception requirements of maneuvering target with high speed, therefore, more effective guidance law should work out. In present studies of guidance for intercepting high-speed target, Yuping Lietal. proposed a modified proportional navigation guidance law(MPNG) to intercept high speed target; Golan etal. developed a head-pursuit guidance law predicts the position of the target though time variable heading angle;Shima used sliding mode guidance method to intercept maneuvering target with impact angle constrains. Prasanna proposed a guidance law named retro-proportional navigation(RPN), which uses a negative navigation coefficient to intercept high-speed targets in the case of tail-chase engagement. Chaoyong Li etal. analyzed necessary initial and the singular conditions of interception for high speed target, and proposed a new guidance law based on differential geometry;JunhuiXiong etal. applied fuzzy variable coefficient in variable structure guidance law, though re7th International Conference on Mechatronics, Control and Materials (ICMCM 2016) Copyright © 2016, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). Advances in Engineering Research, volume 104