论文部分内容阅读
地球同步轨道上目标数量多,运动形式多样.为了保障航天活动的安全,有必要开展地球同步轨道目标的动态监测,及时掌握发生在中国专属地球同步轨道带的空间事件.2015年12月地球同步轨道带动态监视光学系统样机正式安装在中国丽江高美古观测站.2015年12月至2016年2月,利用该样机对台站上空地球同步轨道带的样本天区开展了试验观测.结果表明.样机能够对27颗地球同步轨道目标进行连续监测,其中两颗为北美航空航天司令部未编目的目标;目标天文定位的内符精度在方位上约为4″,在俯仰上约为1″.利用多圈次观测结果对轨道进行改进,在无轨控发生时,24 h和48 h点位预报精度在方位和俯仰上分别优于9″和2″.以3颗GEO目标为例,通过实测资料对轨道变化事件进行了初步分析和验证.
In order to ensure the safety of space activities, it is necessary to carry out the dynamic monitoring of the geosynchronous orbit objectives and keep track of the spatial events that occur in China’s exclusive geosynchronous orbit. December 2015 Geosynchronous The orbital zone dynamic monitoring optical system prototype was formally installed at the Gaomei Ancient Observation Station in Lijiang, China From December 2015 to February 2016, the prototype was used to test the sample area of the geosynchronous orbit belt above the station.The results show The prototype is capable of continuously monitoring 27 geostationary orbit targets, two of which are not cataloged by NASA; the internal precision of the target astronomy position is about 4 “in azimuth and about 1” in pitch .In addition, the multi-turn observation results improved the orbit, and when the trackless control occurred, the prediction accuracy at 24 h and 48 h was better than 9 “and 2” in azimuth and pitch respectively. Taking the 3 GEO targets as an example, The measured data have carried on the preliminary analysis and the verification to the track change event.