The Processing Technique of Direct Radio Digitalization and IP Packets Transfer for S-and TT&C Signals

With the development of TT&C equipment, the large scale, complex composition, and high maintenance costs caused by the large number of analog circuits in TT&C equipment have hindered the improvement of the overall technical level of the system. Therefore, the development and application of radio frequency digitization technology in TT&C equipment has been applied. To satisfy the technology development requirement of TT&C equipment on radio digitalization and software baseband signal processing, the system scheme based on direct radio digitalization and IP packets transfer for S-band signals was designed. This paper gives the processing technique of direct radio digitalization and IP packets transfer for S-band signals, analysis their effects on TT&C functions and performances, and puts forward ways to resolve these problems. This technique, which can satisfy requirements for spacecraft tracking, range and Doppler measurement, telemetry and command, has been put into use on the new generation TT&C equipment.