Single-Station Orbit Determination with Astrometric Positioning and SLR Techniques

摘要

The principle of single-station orbit determination using astrometdc positioning and SLR techniques is to add a laser ranging unit onto the optoelec-tronic telescope system,so as to conduct laser ranging and astrometric positioning angle measurement at the same time.By melting and processing all the data together,the new technique will achieve single-station orbit determination of the objects.In this paper,the actual measurement data of satellite Ajisai is analyzed for its single-station single-lap and multi-lap orbit determination.However,due to the limited amount of actual measurement data,objects of three types of orbit altitude have to be simulated and the single-station orbit determination analysis is just based on them in order to make the conclusion more universal.After studying the actual and simulated data,it turns out that for single-station single-lap orbit determination,the ranging measurement data (measurement duration longer than 4 min) will improve the orbit determination accuracy from several kilometers to tens of meters and the 24-h prediction accuracy from thousands of kilometers to several kilometers.