Monitoring CE'3 Rover Movement Using Same-Beam Interferometry with China's Deep Space Network

摘要

China's Deep Space Network (DSN) was deployed in 2013, a high-accuracy interferometric tracking observable was successfully used for orbit determination in the CE'3 project. This chapter presents the results of the rover's status monitoring by earth-based same-beam interferometry (SBI) measurement. Phase delay with a biased offset is induced to identify the rover's movement status, which could be up to three orders of magnitude better than conventional group delay. Based on the tracking data within China's DSN, the status of the rover including going ahead, turning over, and changing signal can be successfully identified with a higher resolution. Combined with baseline length within China's DSN, the movement of the rover in the order of centimeters can be identified, which testifies the effectiveness of this technique and algorithm.