小型光电人卫跟踪仪的摆动叉式ALT-ALT跟踪机架

SWING TYPE ALT-ALT MOUNT FOR SMALL SATELLITE TRACKER

人卫跟踪仪一般采用地平式跟踪机架 ,由于这种机架固有的天顶盲区 ,致使观测数据不连续而造成卫星精密定轨的困难。讨论了小型光电人卫跟踪仪的ALT ALT机架原理 ,分析证明采用这种机架形式没有天顶盲区、跟踪速度和加速度较小。同时提出了一种新颖的摆动叉式ALT ALT跟踪机架 ,具有全天覆盖无遮挡、体积紧凑小巧等优点 ,其力学性能也十分优良 。

Most of the satellite trackers use altazimuth mount, but the intrinsic blind area near the zenith for this kind of mount causes difficulty in obtaining continuous observing data, thus it is hard to determine the precise orbit of satellites. In this article, we discussed the principle of ALT-ALT mount for small satellite tracker and proved this mount has no blind area near the zenith, need small tracking velocity and acceleration only. We presented a new kind of yoke to implement the ALT-ALT mount, which can cover the whole useful observing area, occupies small space and has excellent mechanic performance. It is a very original and useful mounting type for satellite tracker.