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在空对空拦截中,寻的阶段是一个关键阶段.该阶段的特点是时间短、寻的路径上的方位角速率低.其所以是关键,因为关于目标机动的任何误判都可能导致很大的脱靶距离.本质上这是由于目标实施躲避机动造成相遇航路误差而跟踪者来不及调整航路所致.因此要设计出能够对目标机动产生快速反应的导引律,目标加速度估计是至关重要的.然而,空对空导弹目标跟踪器的综合还面临一些棘手问题.这些问题包括缺乏可观测性、建模误差以及高采样率引起的计算时间限制.本文给出了一个能解决这些问题的新的跟踪滤波器.该滤波器以跟踪动态中固有的时间尺度分离为基础.结合一种筒单的自适应方法,该滤波器能够跟踪很多类型的目标机动,从计算量角度考虑也是有效的.
In air-to-air interception, the seek phase is a key phase characterized by a short time and a low azimuthal rate on the seek path, and so it is crucial because any miscarriage of justice about a target maneuver can result in a Large off-target distance, which is essentially caused by the tracker’s lack of time to adjust the route due to the maneuver caused by the target to avoid the route error, so the target acceleration estimation is very important to design the guidance law that can react rapidly to the target maneuver However, the integration of the target tracking system for air-to-air missiles still faces a number of difficult issues such as lack of observability, modeling errors and computational time constraints caused by high sampling rates.This paper presents a solution to these problems A new tracking filter based on the separation of time scales inherent in the tracking dynamics.With a simple adaptive method this filter can track many types of target maneuvers and is also computationally efficient .