卫星跟踪设备伺服系统的动态范围

从理论上给出卫星跟踪设备的角跟踪范围，为具体设备研制中确定伺服系统的角跟踪动态范围提供最根本的技术依据。方法是先分析卫星相对于地心和地表设备的角运动，给出角速度及角加速度范围；然后针对A-E和X-Y两种伺服方式进行角运动的分解，并结合卫星运动的典型轨道，分别给出A-E式和X-Y式伺服系统跟踪卫星时所需的最小保精度动态范围，本文的分析表明：A-E式伺服存在过顶盲区，该盲区是实际应用中不可避免的客观存在，X-Y式伺服存在地平盲区，但该盲区不影响实际应用。

Dynamic Range of the Servo System of Satellite Tracking Equipment

This paper aims to provide a technical basis for determining the angular tracking range of satellite trackingequipment's servo system by analyzing its theoretical angular tracking range.It first enumerates all the typical satellite orbits, then analyzes their angle movement range around the geo center and ground based satellite tracking equipment. Second, it projects the angle movement into A E and X Y, the two most commonly used servo system types, to get usable angular tracking range. The conclusions are: for an A E servo system, there is an un trackable area near the zenith which affects the daily tracking ; for an X Y servo system, the un trackable area is near horizon and only in North South direction, which doesn't affect daily tracking.