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Intercept-Angle Guidance

机译:拦截角引导

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摘要

A new guidance concept is proposed. Implementing it enables intercepting a maneuvering target while also imposing, from early on in the engagement, a predefined angle relative to the target's velocity vector. The scenario of interest is aerial interception between a missile and a maneuvering target. The guidance concept is applicable in all aerial interception geometries: namely, head-on, tail-chase, and the novel head-pursuit. Analytical conditions for existence of these different engagement geometries are derived. The guidance concept is implemented using the sliding-mode approach. The common assumption of flight along an initial collision triangle is not taken, and thus the guidance law is applicable for both midcourse and endgame guidance. The application in the different engagement geometries is studied via simulation. It is shown that the head-on scenario allows the smallest range of intercept angles. It also places the most severe maneuverability requirements on the interceptor. Thus, in some cases, tail-chase or head-pursuit engagements should be considered instead. The choice between the two is dependent on the adversary's speed ratio; for tail-chase, the interceptor must have a speed advantage over its target, while for head-pursuit, it must have a speed disadvantage.
机译:提出了一种新的指导概念。实施它不仅可以拦截机动目标,而且还可以从啮合初期开始就相对于目标速度矢量施加预定角度。感兴趣的场景是导弹与机动目标之间的空中拦截。该指导概念适用于所有空中拦截几何形状:即正面,尾部追逐和新颖的头部追踪。得出存在这些不同接合几何形状的分析条件。指导概念是使用滑模方法实现的。没有采用沿着初始碰撞三角形飞行的通用假设,因此制导律适用于中途制导和残局制导。通过仿真研究了在不同啮合几何形状中的应用。结果表明,迎面场景允许最小范围的拦截角。它还对拦截器提出了最严格的可操纵性要求。因此,在某些情况下,应改用追尾或追求头部的方式。两者之间的选择取决于对手的速度比。对于追尾来说,拦截器必须比目标具有速度优势,而对于头部追赶,则必须具有速度劣势。

著录项

  • 来源
    《Journal of guidance, control, and dynamics》 |2011年第2期|p.484-492|共9页
  • 作者

    Tal Shima;

  • 作者单位

    Technion—Israel Institute of Technology, Haifa 32000, Israel Department of Aerospace Engineering;

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  • 原文格式 PDF
  • 正文语种 eng
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