• ACCELERATING STANDARDS COMPLIANT TMNS RADIO IMPLEMENTATIONS

      Newton, Todd A.; Timme, M. Wayne; Southwest Research Institute® (International Foundation for Telemetering, 2018-11)
      IRIG 106-17 defines interoperable two-way network telemetry interfaces for the wired as well as the dynamic TDMA air interface. While the air interface is based on the familiar SOQPSK-TG waveform, a TmNS-based radio contains a dynamic TDMA MAC regulated by Link Management through the use of RFNMs. This paper illustrates the TmNS-based radio aspects of the IRIG standard by describing our experience utilizing a two-track approach for accelerated TmNS compliant radio development. We have divided the architecture by engineering discipline lines (Communications vs. Computer Engineering). Doing so allowed us to accelerate the design, simulation, and test tasks while using a common code base across various transceiver implementations. Discussion includes a description of the software modules that provide TmNS interfaces for standards compliant radio functionality such as the TDMA MAC, RFNM processing, system management, and MDL configuration as well as system-level integration testing.
    • OBTAINING MEASUREMENT DATA USING COCKPIT VIDEO CAMERAS

      Ibaroudene, Hakima; Moodie, Myron L.; Abbott, Ben A.; Southwest Research Institute® (International Foundation for Telemetering, 2018-11)
      Rather than classic data bus-based acquisition and extraction, we can use cockpit video cameras to extract measurements. These technologies can reduce installation costs and complexity and minimize aircraft modification to obtain parameter data and may be sufficient for some quickturn, limited-scope flight test operations. This paper explores the challenges and possible approaches for extracting measurements from video imagery of cockpit displays and provides an in-depth case study of a portable cockpit display video measurement system that reads digital measurements from aircraft instrument panels.