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<p>This paper proposes a three-dimensional (3D) field-of-view (FOV) constraint impact time control guidance (ITCG) law for intercepting non-maneuvering targets under aerodynamic and gravitational effects. First, based on a novel impact time error, a line-of-sight (LOS) rotation rate profile is designed to achieve both zero miss distance and impact time constraints. Then, a feedback guidance law is developed by using fixed-time control technique to ensure the tracking error converges to zero within a fixed time. Finally, the proposed ITCG law is applied to intercept non-maneuvering targets through the predicted interception point (PIP) technique. Unlike existing studies, this proposed ITCG law converts the ITCG problem into a stabilization tracking control problem, enabling precise impact time control without using model decoupling or linearization. Moreover, the FOV constraint is satisfied through proper guidance gain <i>k</i> selection without introducing switching logic or auxiliary functions, which significantly enhances engineering applicability. Finally, extensive numerical simulations have validated the effectiveness of the proposed ITCG law.</p>

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Three-Dimensional Field of View Constraint Impact Time Guidance Law for Varying-Speed Missile

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Wenzhang Wan,
  • Lei E,
  • Zhen Gu,
  • Honglong Kang,
  • Jun Li,
  • Shenmin Song,
  • Shuyi Shao

摘要

This paper proposes a three-dimensional (3D) field-of-view (FOV) constraint impact time control guidance (ITCG) law for intercepting non-maneuvering targets under aerodynamic and gravitational effects. First, based on a novel impact time error, a line-of-sight (LOS) rotation rate profile is designed to achieve both zero miss distance and impact time constraints. Then, a feedback guidance law is developed by using fixed-time control technique to ensure the tracking error converges to zero within a fixed time. Finally, the proposed ITCG law is applied to intercept non-maneuvering targets through the predicted interception point (PIP) technique. Unlike existing studies, this proposed ITCG law converts the ITCG problem into a stabilization tracking control problem, enabling precise impact time control without using model decoupling or linearization. Moreover, the FOV constraint is satisfied through proper guidance gain k selection without introducing switching logic or auxiliary functions, which significantly enhances engineering applicability. Finally, extensive numerical simulations have validated the effectiveness of the proposed ITCG law.