• VEHICLE NETWORK TECHNOLOGY DEMONSTRATION

      Grace, Thomas; Hodack, Dave; Naval Air Systems Command (International Foundation for Telemetering, 2007-10)
      iNET is a project tasked to foster advances in networking and telemetry technology to meet emerging needs. This paper describes one objective of the project, which is standardization and interoperability. It begins to explore issues for achieving a level of interoperability among differing vendor’s hardware such as data acquisition units, data recorders, video systems, transceivers, and network encryption. Specifically, this paper addresses the expansion of the current demonstration system with the addition of multiple vendor data acquisition units. It will also attempt to address the level of standardization necessary for achieving interoperability while still enabling vendors to add their value added contributions into their products.
    • A WIDEBAND CHANNEL MODEL FOR SHF-BAND TELEMETRY OVER WATER

      Rice, Michael; Lei, Qiang; Brigham Young University (International Foundation for Telemetering, 2007-10)
      Data recorded during multipath channel sounding experiments, conducted off the coast of Pt. Mugu Naval Air Station at 8.0 GHz was used to model the multipath interference at SHF band over water. The modeling results show that a three ray model consisting of line-of-sight propagation and two reflected propagation paths is a good fit for the measured channel frequency responses. The properties of the multipath reflections are determined by geometry and sea state. For calm seas, the first reflection is a large amplitude short-delay reflection whereas for rough seas, the first reflection has a smaller amplitude and longer delay. The second reflection has a smaller amplitude and larger delay when the sea is calm.
    • A WIRELESS NETWORK-BASED RFNET SOLUTION FOR FLIGHT TEST

      Xuming, Fan; Xiaoxian, Bai; Baoqiang, Zhao; Junmin, Zhang; Chinese Flight Test Establishment (International Foundation for Telemetering, 2007-10)
      An rfNET solution based on IEEE 802.11 wireless network is presented to perform one-way remote transmission of airborne instrumentation data and multi-channel video images in flight test by modifying the wireless network bridge and UDP protocol. Its architecture and structure is introduced briefly and the results of ground transmission test and flight demonstration transmission are provided. It also points out the major problems of this solution for engineering application and their solutions.
    • WIRELESS SENSOR SYSTEM FOR AIRBORNE APPLICATIONS

      Pellarin, Steve; Musteric, Steven; Teletronics Technology Corporation; Eglin Air Force Base (International Foundation for Telemetering, 2007-10)
      Adding an instrumentation / telemetry system to a test article has historically required an intrusive installation. Power, wiring, and available space typically present significant challenges. There has been a long-standing need in the test and training community for a non-intrusive, flexible and modular instrumentation and telemetry system that can be installed on an aircraft or other test article without the need for permanent modifications. In addition, as available space in aircraft weapon bays, small weapons, and unmanned vehicles becomes a premium, the miniaturization of remote sensors and telemetry units becomes critical. This paper describes the current status of the Advanced Subminiature Telemetry System (ASMT) Initial Test Capability Project. It discusses the challenges that have been overcome in developing a wireless sensor network system for use in an airborne test environment. These include wireless sensor packaging design, selection of operating frequencies, COTS wireless devices, batteries, system synchronization and data bandwidth calculations. The paper will also document the progress to date including preliminary test results.
    • XML META-DATA EXPERIMENTS

      K/Bidy, Gilles; L-3 Communications (International Foundation for Telemetering, 2007-10)
      As part of the technology upgrades driven by the iNet initiative, there is a need to establish a meta-data standard to describe configuration information for the system under test. The technology identified for such a standard is XML and XSD schemas. This paper presents findings from various experiments to import and export existing telemetry configuration information to XML based on the new Meta-data model. In addition, this paper will discuss the possible conversions to and from the existing IRIG TMATS standard.