Design and test of measurement, control and communication system on X band of Chang'E-2

In deep space exploration, in order to conquer the TT&C technical difficulties, which are long distance, long time delay and weak signal, an efficiency method is to improve radio frequency. Therefore an X-band TT&C technical experiment is developed in CE-2 Project for the first time. This paper studies the design and realization of the integrated space - ground X-band TT&C system , describes the composing of the technical experiment system, critical techniques, system experiment method and the test results. Experimental results indicate that X-band improved remarkably in link performance and precision of orbital measurement and determination, via comparing with S-band TT&C system. X-band will be used as major frequency band for lunar and deep space exploration.