A New Autonomous Celestial Navigation Method for Mars Probe

摘要

This paper focuses on a new celestial navigation method for Mars probe on the transferring orbit. The dynamical model is established first. Then the celestial measurement is obtained by two ways, one is to choose the angles between the line of sight vectors from the Sun, the Earth and the Mars to the probe, the other kind of celestial measurement is the measurement of angles between the Sun, the Earth, the Mars and three stars. Autonomous orbit navigation is obtained by Unscented Kalman Filter (UKF). The simulation illustrates that the latter way is much better than the first one at the precision.