Abstract
In the operational orbit determination with optical measurements of space objects, some observations of different objects are tagged as the same object. For this kind of data, the orbit improvement according to the tag is failed because of the composition of multiple objects. A method is proposed from the view of maximum likelihood, and it combines the orbit improvement and identification by employing the EM (Expectation Maximum) method. In the implementation of this method, a robust estimation is also given. Corresponding numerical simulations show that the method is feasible, effective, and convenient.
Author
Wang, X.
Journal
Acta Astronomica Sinica
Paper Publication Date
November 2014
Paper Type
Astrostatistics