不同运动特性目标落入自由波束的分析探讨

Analysis of Different Movement Targets Falling into Free Beam

指定仰角目标如果不在雷达指定搜索范围,需要抽调指定波位到指定仰角对目标进行照射。对于不同运行特性的目标,在保证雷达跟踪性能和跟踪精度的前提下,选取不同的目标运动数学模型、滤波外推算法,分析预测精度对目标落入自由波束的影响;通过仿真分析,发现运动模型以及滤波算法的选取对目标落入自由波束时影响是明显的,最终提出一种折中方案,即使目标运动特性发生变化,也能保证目标以一定的概率落入自由波束,实现雷达全空域的搜索。

When a target of given elevation stays out of the desired radar search zone, a specific beam needs to be assigned to the given elevation so as to make illumination of that target. For targets with different movements, various target movement models and filtering algorithm have been experimented to analyze the effects of prediction accuracy on the target failing into free beam under the condition that the radar tracking performance and tracking accuracy remains unchanged. Simulations show that movement models and filtering algorithm have an obvious effect on target failing into a free beam. This paper proposes in the end a compromise plan ensuring that the target can fall into the free beam at a certain probability even if the target movement characteristics are changing, thus enabling the radar to make the full space search.