Autonomous orbit determination for quasi-periodic orbit about the translunar libration point

The quasi-periodic orbit about the translunar libration point can be used to establish a continuous communication link between the Earth and the far side of the Moon. In this paper, Sun-Earth-Moon autonomous navigation is implemented and investigated in the translunar libration point problem. Firstly, a new navigation dynamic model is proposed. Furthermore, due to the unstable nature of the translunar libration orbit, three sensor configuration cases for Sun-Earth-Moon autonomous navigation are studied. Simulation results of autonomous navigation are obtained by the iterative Least Squares Filtering. The nonlinear identifiability analysis is used to evaluate the identifiability and find an appropriate and robust sensor configuration for translunar libration probe. Finally, Simulations show that the sensor configuration of using directional data from the spacecraft to the Sun, the Earth and the Moon and one Doppler measurement can satisfy both the economical index and reliability.