Being able to achieve very high angular resolution, the Very Long Baseline Interferometry (VLBI) synthetic telescope is
widely used in the deep-space tracking. The software correlator is a novel VLBI data processing technique, which is very
suitable for deep-space exploration. This paper introduces the first 10-station software correlator of the Chinese VLBI
Network (CVN) and its applications. Based on the commercial symmetric multiple processor server, the CVN software
correlator can work in the near real-time and the post processing modes. Besides the normal VLBI data correlation
function, it has the abilities of fast fringe search, multi-channel phase calibration abstraction, high frequency resolution
which are especially useful in space craft tracking. It was successfully used in the European circumlunar explorer joint
tracking experiment and other space craft observations. More than one year operation indicated its characteristic of
flexible structure, reliability, scalability. It will be used in the Chinese lunar and other deep-space exploration projects.
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