摘要：Radio waves emitted from two or more landing units on the lunar surface are received by an antenna at the Earth station, and the range differences between these landing units are measured with an error of several millimeters.The phase differences between the oscillators of these landing units are monitored via an orbiter that orbits around the Moon.We have developed a simple roundtrip method to obtain these phase differences and also propose a method of calibrating the system delay on the ground.In order to observe the rotation of the Moon and monitor the phase differences effectively, we designed the position of the landing units and the orbit of the orbiter.Further, we concurrently analyzed the characteristics of the common view period.The error of the system was analyzed and to have a high accuracy.The results show that inverse VLBI technology can be used to measure the rotation of the Moon and new scientific results can be obtained. Key words iVLBI lunar rotation roundtrip method NBV orbit design common view period.
