极坐标导引头的增量角度指令由于跟踪过程中平台剧烈转动而不适宜对其作动态规划,这里介绍一种基于全像平面的角度指令方案,并提出基于此的盲区跟踪策略。角度指令方案重点在于通过旋转全像平面坐标系完成角度指令优化。在对目标运动模式进行分析后,通过改进指令优化中全像平面坐标系旋转判据和特定情况下的滚转保持构造了盲区跟踪策略。Matlab仿真结果显示该策略可以减小跟踪过程中的最大失调角,相应减小了目标丢失的概率。

Increment angle instruction of polar coordinate seeker is not appropriate to plan dynamically as seeker itself rolls greatly during tracking process. In the paper, an angle instruction scheme based on full-map plane was first introduced, and then a strategy for target tracking in zenith blind zone was presented. The angle instruction calculation's key point is to optimize instruction by rotating the full-map plane coordinate system. After analysis of target's move patterns, tracking strategy for blind zone was constructed by improving criteria for rotating full-map plane coordinate system during instruction's optimization and by holding roll instruction under specific situation. The simulation by Matlab demonstrates that the strategy can reduce the maximum dislocation angle during target tracking, accordingly can reduce the probability of track loss.