ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Method of time-to-go estimation for head-pursuit interception mode
Received date: 2014-05-04
Revised date: 2015-04-20
Online published: 2015-05-12
Supported by
National High-tech Research and Development Program of China
The estimation method suiting head-on and head-pursuit interception mode is the necessary condition of accurate time-to-go (TGO) calculation, and the method of TGO estimation is appropriate for head-on engagement but not for head-pursuit engagement. Therefore, the methods of TGO estimation for the interception of nonmaneuvering and maneuvering targets are proposed in head-pursuit interception mode. Through transforming the linear guidance equation, the flight arc of interceptor is solved; according to the predicted position of impact point, the analytic expressions of TGO estimation are obtained. The idea of TGO method has wide versatility and can be used in TGO estimation of trajectory shaping guidance. Simulations are carried out with classical method for verifying its validity based on retro-proportional-navigation (RPN) and augment RPN (ARPN). Compared with the classical method, it is demonstrated that the proposed TGO estimation method has high accuracy and is able to improve the guidance performance effectively for missile.
LI Yuan , YAN Liang , ZHAO Jiguang , CHEN Jingpeng . Method of time-to-go estimation for head-pursuit interception mode[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(9) : 3082 -3091 . DOI: 10.7527/S1000-6893.2015.0107
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