Algorithms for detecting orbit maneuver in artificial satellites

The problem how to detect orbit maneuver in artificial satellites using Doppler measurements, is studied in this paper. To test whether there is such a maneuver on Day 1, we propose an equal-variance test on the post-residuals; for such an event on Day 2 or Day 3, we give another algorithm using predicted residuals. The calculations show that the algorithms can reliably detect any change in the semi-major axis greater than 3 metres when the standard error of the Doppler measurement is 0.2 cm/s.