Optical Prototype and Experimental Results of Geosynchronous Orbit Dynamic Monitoring System

There are a large number of Geosynchronous Orbit (GEO) targets with variable motion form. In order to protect space activities and master the space activities happened in our exclusive orbit space, it is necessary to develop the dynamic monitoring of GEO. In December 2015, an optical prototype of GEO dynamic monitoring system was set up in Gaomeigu observation site of Lijiang observatory. Observation experiments were carried out by use of the prototype from December 2015 to February 2016. The results show that 27 GEO targets can be continuously monitored, and 2 of them are uncatalogued by North American Aerospace Defense Command (NORAD). The observation precision for GEO targets of the prototype is derived as well as 4" in azimuth and 1" in elevation. The target orbit is improved according to the multi-cycle observations, and in the absence of orbit control occurring, the precision of 24-hour and 48-hour position forecast is better than 9" in azimuth and 2" in elevation. Taking 3 GEO targets as examples, the preliminarily analysis and verification of the orbit variation events are carried out by use of the observation data.