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With the continuous development of space technology, the satellite functions are becoming more and more complex, which puts forward higher requirements for the satellite TT C subsystem. It is required to support non-coherentc spread spectrum TT C, relay terminal TT C, DS/FH hybrid spread spectrum TT C, measurement data transmission TT C at the same time, and puts forward higher requirements for the multi-system support, generalization, automatic testing capability and reliability of the ground test platform of the satellite TT C system; The design method of satellite multi-system TT C ground test platform system is studied. The multi-channel TT C ground test channel reuse, database-based universal configuration and automatic test technology are adopted and applied to the ground test of a remote sensing satellite. The test results show that the platform operates stably, achieves good application results, and meets the requirements of satellite multi-system TT C ground test