• THE FACTORS INFLUENCING THE PERFORMANCE OF MULTIPLE PROCESSOR SYSTEMS FOR TELEMETRY DATA ACQUISITION AND PROCESSING

      Can, Ouyang; Chang-jie, Shi; Beijing Research Institute of Telemetry; Science and Technology Committee (International Foundation for Telemetering, 1992-10)
      Multiple processor architecture has been used in telemetry processing systems for many years. But how to evaluate the performance of such a system on telemetry data processing has not yet been adequately addressed. Utilizing a deterministic model, this paper tries to study the performance of multiple-processor telemetry data processing system. It demonstrates that the bus arbitration scheme, the ratio of processing time to communication time and the processing decomposition are the three important factors influencing the performance of such kind of systems. All the three factors are discussed. The results obtained have been applied to the design of the MSDDTS (Multi-Stream Data-Driven Telemetry System), a new generation multi-stream telemetry system in china, in order to gain the best cost-effectiveness.
    • The Shipboard Antenna Tracking System of Telemetry

      Quan-Hui, Gao; Beijing Research Institute of Telemetry (International Foundation for Telemetering, 1992-10)
      This paper describes a C-band auto-tracking receiving system on shipboard which is used in satellite telemetry. The system consists of receiving antenna, wideband feed, antenna pedestal, telemetry/tracking receiver antenna controller and computer console. Its characteristics are as follow: Single Channel Single Pulse Tracking Feed, 2. 5m Antenna Diameter, 500MHz BW, LHCP and RHCP Dual - Channel Polarization Diversity Receiving. The servo system uses rate - gyros as stabilized element being based on the micro - processor to realize the digital servo control. Computer console performs the status monitoring and management to the whole system. The system design, the main system specification and important test results are given.