Frame synchronization of digital telemetry information

Frame synchronization algorithm plays an important role in the recovery process of telemetry data transmitted over a communication channel with noise, and it significantly affects the entire process efficiency. In particular, frame synchronization is important in the case when the nature of noise in the communication channel and methods of processing the transmitted information allow for both omission of the reliable messages and insertion of the false ones into the telemetry data stream, as well as interruption and resuming transmission at irregular intervals. In general, the frame synchronization process provides a decommutation ability of telemetry information parameters in the stream. A necessary theoretical description of the frame synchronization system model is given, as well as techniques for selecting basic parameters of the synchronizer. The selection criteria for these parameters are defined. In the experiments with real telemetry data ofIRIG-106format, the model of a communication channel with noise allowing for both inversion and bit omissions is used. The obtained experimental results are compared with theoretical estimations of the synchronizer parameters.

References

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