Degsin Of The Telemetry Data Processing Systems

TT&C is an important subsystem of the space flight system, to protect the distancemeasure and the receiving the telemetry data. Telemetry is the way to measure the caredparameters from the long distance subject, employed in space flight system extensively.In the actual system, the mechanism of the telemetry has many types, such as PCM/FM,PCM/DQPSK and PCK/BPSK.The telemetry data processing is the key technology in telemetry system. Thetelemetry system is tracking the flight tagert in the mission, and the real-time monitingis realized by the data processing system. And after the mission, the data processingsystem can provide the ability to replay the data and analyze the data. So, the dataprocessing becomes the key issue of the telemetry system.With the development of the technology, the software radio is employed intelemetry equipment extensively. It can improve the quality of the equipment. Somejobs of the data processing can be completed by this system to enhance the real-timequality. Unfortunately, there are so many meachinsam of telemetry exsit in the actualTT&C systems. One equipment can just process only one type telemetry data.Flexibility is very poor in these systems. In order to process the many type telemetrydata in one system, this paper proposes a design of the data processing system of thetelemetry. Based on the software radio system, the IF processing, demodulation,synchronization and display can all be realized by software on the common peasonalcomputer. The simulation results show that the software solution can achieve the betterperformance than the common solution. This telemetry data processing system not onlycan deal multi-type telemetry data, but also reduce the cost of the equipment of thetelemetry system.