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Effects of time-to-go errors on performance of optimal guidance laws

机译:时间误差对最佳指导律绩效的影响

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摘要

This paper describes the sensitivity analysis concerning time-to-go estimation error for the class of optimal impact angle control guidance laws under a stationary or a slowly moving target. First, in this paper, the closed-form solutions of those guidance laws for a lag-free system are determined. Then, we derive the explicit expressions of the terminal errors (i.e., miss distance and impact angle error) in the presence of a constant positive time-to-go estimation error. Based on these results, the guidance parameters that can help reduce the sensitivity to time-to-go estimation error are identified. Additionally, the terminal performance of the presented optimal impact angle guidance laws is evaluated from the standpoint of robustness against the time-to-go estimation errors. Numbers of linear homing simulations are also performed to confirm the analysis results.
机译:本文描述了在静止或缓慢移动的目标下,针对最佳冲击角控制制导律类别的估计时间误差的灵敏度分析。首先,在本文中,确定了无滞后系统的那些制导律的闭式解。然后,在存在恒定的正去时估计误差的情况下,我们导出了终端误差(即错位距离和撞击角度误差)的显式表达式。根据这些结果,确定可以帮助降低对走时估计误差的敏感性的指导参数。另外,从鲁棒性的角度出发,针对所要达到的估计时间误差评估了所提出的最佳冲击角引导律的终端性能。还执行了许多线性归位仿真,以确认分析结果。

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