Combined proportional navigation law for interception of high-speed targets  

作　　者：Yuan LI Liang YAN Ji-guang ZHAO Fan LIU Tao WANG 

机构地区：[1]Academy of Equipment [2]Air Force Xi'an Flight Academy [3]Unit 95881 PLA

出　　处：《Defence Technology（防务技术）》2014年第3期298-303,共6页Defence Technology

摘　　要：A new proportional navigation(PN) guidance law,called combined proportional navigation(CPN),is proposed.The guidance law is designed to intercept high-speed targets,which is a common case for ballistic targets.The range of target-to-interceptor speed ratio during target interception is derived when guidance laws are applied in high-speed targets interception,and the effectiveness of negative navigation ratio in the PN-based guidance law is proven analytically in some lemmas.Based on the lemmas,the lateral acceleration command of CPN is defined,and the solution to the appearance of singularity in time-varying navigation ratio is given.The simulation results show that CPN can determine headon engagement(as PN) or tail-chase engagement(as RPN) through initial path angle compared with PN and retro proportional navigation(RPN),and can adjust the value of navigation ratio for head-on engagement or tail-chase engagement.Therefore,the capture region of CPN is larger than that of other guidance laws using PN-based methods.A new proportional navigation （PN） guidance law, called combined proportional navigation （CPN）, is proposed. The guidance law is designed to intercept high-speed targets, which is a common case for ballistic targets. The range of target-to-interceptor speed ratio during target interception is derived when guidance laws are applied in high-speed targets interception, and the effectiveness of negative navigation ratio in the PN-based guidance law is proven analytically in some lemmas .Based on the lemmas, the lateral acceleration command of CPN is defined, and the solution to the appearance of singularity in time-varying navigation ratio is given. The simulation results show that CPN can determine headon engagement （as PN） or tail-chase engagement （as RPN） through initial path angle compared with PN and retro proportional navigation （RPN）, and can adjust the value of navigation ratio for head-on engagement or tail-chase engagement. Therefore, the capture region of CPN is larger than that of other guidance laws using PN-based methods.☆Copyright . 2014, China Ordnance Society. Production and hosting by Elsevier B.V. All rights reserved.

关 键 词：COMBINED proportional NAVIGATION Proportional NAVIGATION HIGH-SPEED target CAPTURE region INTERCEPTION 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]