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Volume 42 Issue 8
Aug.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(8): 1667-1674.
LI Yuan, ZHAO Jiguang, BAI Guoyu, et al. Method of time-to-go estimation based on predicted crack point[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(8): 1667-1674. doi: 10.13700/j.bh.1001-5965.2015.0509(in Chinese)
Citation: LI Yuan, ZHAO Jiguang, BAI Guoyu, et al. Method of time-to-go estimation based on predicted crack point[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(8): 1667-1674. doi: 10.13700/j.bh.1001-5965.2015.0509(in Chinese)
shu

Method of time-to-go estimation based on predicted crack point

doi: 10.13700/j.bh.1001-5965.2015.0509
  • 1.

    Department of Postgraduate, Equipment Academy, Beijing 101416, China

  • 2. Institute of Tracking and Telecommunications Technology, Beijing 100094, China

  • 3. Department of Scientific Research, Equipment Academy, Beijing 101416, China

  • Received Date: 31 Jul 2015
  • Publish Date: 20 Aug 2016
    Abstract
  • Aimed at the different characters of the head-pursuit and head-on interception flight trajectory, the time-to-go (TGO) estimation methods are designed. According to the prediction of the crack point for the interceptor and target, the influence of different launch conditions on the precision of TGO estimation is decreased. At first, the linear proportional navigation motion equation is transformed, and the first order differential equation about the distance between interceptor and target is obtained. Based on the predicted crack point, the error for the integration result caused by the different initial launch angles is corrected. Then the TGO analytical expressions of two interception models are obtained. Compared with the existing three methods, the simulation result verifies the real time performance and the estimation precision of the proposed method which is able to optimize the guidance performance effectively.

     

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