Space gnc semi-physical simulation system based on dual 6-dof mechanism in a microwave anechoic chamber

With the development of space technology, the on-orbit serving (OOS) research of spacecraft has been a hotspot in the space agencies of various countries. It is usually very dangerous in the execution of space tasks, especially space rendezvous and close control. Ground test verification of the OOS technology is essential in the implementation of space tasks. In order to verify the technology of space rendezvous and acquisition based on the photoelectric/microwave tracking equipment, the test system framework of the dynamic truss structure and the solar simulator, which has limited motion dimension and low spatial environment fidelity, is given by the FRL laboratory in the United States. Nevertheless, this paper proposed a novel test system framework of dual 6-DOF mechanism structure in microwave anechoic chamber, which gives consideration to tracking equipment of microwave/optical mechanism and completes the high precision simulation of on-orbit relative motion of spacecraft and spatial target RCS / LRCS. The test system in the paper can be used to verify the whole task process of space rendezvous, approaching, stopping, and so on. Finally, a simulation test is given to verify the effectiveness of the proposed system framework in the paper.