两轴光电跟踪仪高仰角跟踪盲区分析

Blind zone of two axes electro-optical tracker in high elevation angle

摘要: 从轴准直误差、动态滞后误差两方面分析了采用俯仰轴叠加于方位轴光机座结构方式的光电跟踪仪在高俯仰角跟踪时的误差变化及由此导致的盲区问题，从轴准直误差和动态滞后误差两方面对高仰角跟踪盲区的形成及其空间分布进行分析，并用MATLAB进行了仿真，给出跟踪盲区随方位、俯仰角变化的的分布图形。从盲区分布图形可以看出：光电跟踪仪在性能一定的情况下，跟踪盲区随着仰角增大而增大，并结合直线航路给出这两种误差导致的跟踪盲区的计算方法。跟踪直线航路实验数据显示跟踪误差随着仰角增大而增大。

Abstract: Tracking error due to the misalignment and lag of a two axes electro-optical tracker with elevation over azimuth configuration in high elevation angle was analyzed. The mathematic method for calculating blind zone induced by this error was given. Misalignment and lag error were simulated in Matlab. The simulation and tracking data indicate that blind tracking zone increases as the elevation angle of the electro-optical tracker increases.