This paper discusses a technique for the real time retransmission of data from multiple asynchronous PCM telemetry links in a manner which will allow the times of individual samples to be accurately determined. The technique is called Periodic Burst and is characterized by the continuous tranmission of discrete blocks at rates which maintain the periodicity of parameters. A block is assembled from a single input link and will contain either a "time of sync" word or selected parameters. Blocks which contain parameters are assembled of samples which occur at a single rate during some prescribed time interval. The burst format is designed so that blocks from different links and at different rates are merged and burst transmitted at the rate at which these blocks were assembled. The sequence that a particular sample occurs relative to sync is known from the input links commutation format. If the commutation rate is also known or can be determined, the time of each sample can be established. The nominal commutation rate of a particular telemetry link will be known, but the actual commutation rate may differ by some tolerance, usually between 0.05% and 0.1%. To accurately determine sampling time, it is therefore necessary to determine the actual commutation rate. In the periodic burst technique, this is accomplished by assembling a "time of sync" block for each occurrence of sync and transmitting these blocks in the burst message.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Burst Retransmission of PCM Telemetry Data


    Contributors:


    Publication date :

    1966-07-01


    Size :

    1484031 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Design of Flight Testing Telemetry Information System with Satellite Retransmission

    Chen, X. / Qiu, H. / Chen, J. | British Library Conference Proceedings | 1992


    Fast Performance Analysis Using Multi-Burst Telemetry

    Spence, Paul / van Manen, Peter / Centonze, Salvatore | SAE Technical Papers | 2000


    Fast performance analysis using multi-burst telemetry

    Spence,P. / van Manen,P. / Centonze,S. et al. | Automotive engineering | 2000


    Fast Performance Analysis Using Multi-Burst Telemetry

    Spence, P. / van Manen, P. / Centonze, S. et al. | British Library Conference Proceedings | 2000