A hybrid proportional navigation based two-stage impact time control guidance law  

作　　者：HUANG Jia CHANG Sijiang CHEN Shengfu 

机构地区：[1]School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [2]The 20th Research Institute of China Electronics Technology Group Corporation,Xi’an 710068,China

出　　处：《Journal of Systems Engineering and Electronics》2022年第2期461-473,共13页系统工程与电子技术（英文版）

基　　金：supported by the Fundamental Research Fund for the Central Universities (30919011401)。

摘　　要：To improve applicability and adaptability of the impact time control guidance(ITCG) in practical engineering, a twostage ITCG law with simple but effective structure is proposed based on the hybrid proportional navigation, namely, the pureproportional-navigation and the retro-proportional-navigation.For the case with the impact time error less than zero, the first stage of the guided trajectory is driven by the retro-proportionalnavigation and the second one is driven by the pure-proportionalnavigation. When the impact time error is greater than zero, both of the stages are generated by the pure-proportional-navigation but using different navigation gains. It is demonstrated by twoand three-dimensional numerical simulations that the proposed guidance law at least has comparable results to existing proportional-navigation-based ITCG laws and is shown to be advantageous in certain circumstances in that the proposed guidance law alleviates its dependence on the time-to-go estimation, consumes less control energy, and adapts itself to more boundary conditions and constraints. The results of this research are expected to be supplementary to the current research literature.

关 键 词：missile guidance law impact time control pure-proportional-navigation retro-proportional-navigation time-to-go estimation 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]