Astrometric Data Sources for Space Surveillance and Space Control.

摘要

The need for precision in space surveillance and space control continues to grow as both the number of satellites increases and the importance of space debris tracking elevates. Improvements in instrumentation, from detection devices to pointing hardware, is one area where precision is being increased. Once data acquisition is made, reduction software comes into play. Regardless of the precision in that software, a priori information, such as stellar positions and magnitudes, can degrade the nal results if these data are not maintained at the highest level of precision. Systems should be designed to be exible; the ability to update such a priori information is desirable given that astrometric catalogues and their associated photometry continue to improve in both quality of data and quantity of stars.