地平式光电望远镜天顶盲区影响因素

英文篇名：Factors affecting the zenith blind spot of an altitude-azimuth optoelectronic telescope
中文刊名：光学精密工程
英文刊名：Optics and Precision Engineering
作者：吉桐伯 ; 陈娟 ; 杨秀华 ; 陈涛
英文作者：JI Tong bo ; CHEN Juan ; YANG Xiu hua ; CHEN Tao (1.Changchun Institute of Optics ; Fine Mechanics and Physics ; Chinese Academy of Sciences ; Changchun 130022 ; China ; 2. Network Center ; Jilin Univercity ; Changchun 130012 ; China)
中文关键词：地平式 ; 跟踪伺服系统 ; 天顶盲区
英文关键词：altitude azimuth form ; tracking servo system ; zenith blind spot
出版日期：2003-06-25
机构：中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所吉林长春130022 ,吉林长春130022 ,吉林长春130022,吉林大学网络中心,吉林长春130012 ,吉林长春130022
年：2003
期：03
出版单位：光学精密工程

摘要

以常规代数方法 ,分析探讨了地平式光电望远镜天顶盲区形成的机理 ,结果显示跟踪架最大方位角速度、目标的飞行高度和飞行速度这三个参数确定了天顶盲区范围。利用天文球坐标系进行了分析 ,结果表明跟踪架最大方位角速度的限制是导致望远镜存在天顶盲区的最主要原因。在北纬 6 0°跟踪赤纬不同的目标得到了具体跟踪数据 ,通过对比方位、俯仰角速度在天顶附近的变化规律 ,验证了天顶盲区首要影响因素是跟踪架方位角速度
The formation of the zenith blind spot of an altitude azimuth optoelectronic telescope is analysed using a conventional algebraic method, and the results indicate that the scope of the zenith blind spot is determined by the maximum azimuth angular velocity of the tracking gimbal and the flight altitude and flight speed of the target. The analysis made in the astronomical sperical coordinates shows that the limit on the maximum azimuth angular velocity of the tracking gimbal is the primary cause for the zenith blind spot of an alitude azimuth optoelectronic telescope. Specific data were obtained by tracking targets with different declinations at latitude 60°north, and it is verified by comparing the varations of azimuth and pitch angular velocities near the zenith that the maijor factor affecting the zenith blind spot is the azimuth angular velocity of the tracking gimbal.

引文

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