In this paper, firstly, we discuss the specific processing algorithm of wide-band VLBI signal, which can be used in astronomy and geodesy. We focus on the theory, algorithm, result and by simulation we verified it. When the Chang'E Ⅱ on its orbit, we organize a short baseline interferometer experiment and get correlation fringe successfully, meanwhile, we compare the result with the data of precise theoretical orbit. It proves that the system is successful, and the algorithm is useful and correct.
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