• uDACS Micropackaged Data Acquisition and Control System

      Sodini, Gregory L.; SCI Technology Inc. (International Foundation for Telemetering, 1988-10)
      The miniaturization of Aerospace Systems, has created a demand for effective, compact, lightweight, and power efficient General Purpose Stand-Alone Flight Computers, as well as Command, Data Handling and Control Systems, that maintain High Reliability, Full Redundancy, Radiation Hardness, Explosive Processing Speed, Rapid Throughput, and High Accuracy. The innovative design techniques used in the uDACS (Micropackaged Data Acquisition and Control System) offer a unique and comprehensive solution to this quandary.
    • The Use of Databases in Telemetry Processing Systems

      Massing, James E.; Fairchild Weston Systems Inc. (International Foundation for Telemetering, 1988-10)
      The amount of information necessary for a computer to setup and process data through a telemetry system is increasing rapidly, The complexity and number of telemetry formats often requires a variety of front-end setups to be kept in the computer. Also, as hardware preprocessors become more common, there is a need to maintain in the computer all information used to direct real-time processing of individual parameters. The need for storage of those setups and parameter definitions, and rapid retrieval of this information, has led to the use of databases in well-designed telemetry systems.
    • Utilization of Real Time Digital Strip Chart Emulation (RTDSCE) Concepts

      Halsey, Tim; Brimbal, Michel; Grottenthaler, Gary; Gould Incorporated (International Foundation for Telemetering, 1988-10)
      "Real Time Digital Strip Chart Emulation", a paper presented in the 1987 ITC Proceedings is reviewed for continuity and the digital techniques applicable to range data display are expanded upon. The paper seeks to present the process of recording telemetered signals in the RTDSCE data management scheme. Direct hardware interfacing is discussed with emphasis on automation and manpower reduction. Time code display and various mass storage possibilities are explored. The merits of video monitoring and the workstation concept during playback are evaluated.
    • Video Compression Standardization Issues

      Stephens, Charles R.; Premmco (International Foundation for Telemetering, 1988-10)
      This paper discusses the development of a standard for compressed digital video. The benefits and applications of compressed digital video are reviewed, and some examples of compression techniques are presented. A hardware implementation of a differential pulse code modulation approach is examined.
    • Video Compression Techniques

      Cilke, Tom; LORAL/CONIC (International Foundation for Telemetering, 1988-10)
      This paper will attempt to present algorithms commonly used for video compression, and their effectiveness in aerospace applications where size, weight, and power are of prime importance. These techniques will include samples of one-, two-, and three-dimensional algorithms. Implementation of these algorithms into usable hardware is also explored but limited to monochrome video only.
    • VLSI High Speed Packet Processor

      Grebowsky, Gerald J.; Dominy, Carol T.; NASA Goddard Space Flight Center (International Foundation for Telemetering, 1988-10)
      The Goddard Space Flight Center Mission Operations and Data Systems Directorate has developed a Packet Processor card utilizing semi-custom very large scale integration (VLSI) devices, microprocessors, and programmable gate arrays to support the implementation of multi-channel telemetry data capture systems. This card will receive synchronized error corrected telemetry transfer frames and output annotated application packets derived from this data. An adaptable format capability is provided by the programmability of three microprocessors while the throughput capability of the Packet Processor is achieved by a data pipeline consisting of two separate RAM systems controlled by specially designed semi-custom VLSI logic.
    • Wideband High Performance Telemetry Tracking and Data Reception System

      Bedford, Cary C.; TT & C Systems; Datron Systems Incorporated (International Foundation for Telemetering, 1988-10)
      A 5 meter diameter wideband polarization diversity Telemetry Tracking System has been developed for Eglin Air Force Base. A single solid state feed, with no moving parts, provides autotrack and data reception in the 1435-1540 MHz and 2200-2400 MHz bands. The system consists of three tracking antennas, each mounted on separate 75 foot high towers. The antennas feature continuous rotation capability in azimuth and remotely controlled stowing mechanisms. A common console containing test equipment, multicouplers, patch panels, RF switching, boresight source and control equipment is interfaced with the three (3) tracking antennas, receiver combiner systems, and boresite antenna. The complete system features total integration of state-of-the-art feed/RF, tracking, and control system electronics with a highly versatile sub-system of telemetry receivers, combiners, RF, and wideband high level video distribution equipment.