• APPLICATIONS OF A HARDWARE SPECIFICATION FOR INSTRUMENTATION METADATA

      Hamilton, John; Fernandes, Ronald; Graul, Mike; Jones, Charles H.; Knowledge Based Systems, Inc; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      In this paper, we discuss the benefits of maintaining a neutral-format hardware specification along with the telemetry metadata specification. We present several reasons and methods for maintaining the hardware specifications, as well as several potential uses of hardware specification. These uses include cross-validation with the telemetry metadata and automatic generation of both metadata and instrumentation networks.
    • THE EFFECT OF NETWORK CENTRIC OPERATIONS IN TELEMETRY FOR AIR FORCE FLIGHT TEST AND EVALUATION

      Santos, Eunice E.; Jones, Charles H.; Harris, Charles; Virginia Polytechnic Institute & State University; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      We discuss how aspects of telemetry can be effectively incorporated and modeled as a component within network-centric operations and warfare paradigms. Telemetry is particularly vital in Air Force Flight Test and Evaluation. As such, this paper has a specific emphasis and provides discussion within this domain. We also present how an existing framework for networkcentric operations and warfare can be particularly beneficial to telemetry modeling, and discuss the potential insights and utility within this context.
    • IHAL-BASED INSTRUMENTATION CONFIGURATION MANAGEMENT TOOLS

      Hamilton, John; Fernandes, Ronald; Koola, Paul; Jones, Charles H.; Knowledge Based Systems, Inc; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      The Instrumentation Hardware Abstraction Language (IHAL) has been developed to be a neutral language that is focused on the description and control of instrumentation systems and networks. This paper describes the various instrumentation configuration management tools we have designed that make use of IHAL’s neutral specification of instrumentation networks. We discuss the features currently present in prototypes as well as future enhancements.
    • IRIG 106 CHAPTER 10 RECORDER VALIDATION

      Ferrill, Paul; Golackson, Michael; Avionics Test and Analysis Corp.; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      The most recent version of IRIG 118, Test Methods for Telemetry Systems and Subsystems, was released in 1999 and does not include any guidance for testing IRIG 106 Chapter 10 recorder / reproducers. This paper will describe the methodology and tools used to perform a thorough testing process to ensure compliance with the IRIG 106-07 standard.
    • MODELING OF THE PLASMA FORMATION DUE TO LASER IRRADIENCE DURING DIRECTED-ENERGY TESTING

      Rajendran, Saravanakanthan; Keidar, Michael; Boyd, Iain D.; Jones, Charles H.; Mork, Brian; University of Michigan; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      Real-time transmission of airborne images to a ground station is highly desirable in many telemetering applications. Such transmission is often through an error prone, time varying wireless channel, possibly under jamming conditions. Hence, a fast, efficient, scalable, and error resilient image compression scheme is vital to realize the full potential of airborne reconnaisance. JPEG2000, the current international standard for image compression, offers most of these features. However, the computational complexity of JPEG2000 limits its use in some applications. Thus, we present a scalable low complexity coder (SLCC) that possesses many desirable features of JPEG2000, yet having high throughput. Continuous radio-wave telemetry is required during planned tests of directed-energy weapons systems in order to characterize in situ the effects of laser irradiation on different target materials. Unfortunately, the incident radiation can cause disruption of the radio signal during the directed-energy testing. Several phenomena associated with directed-energy impact can lead to communication path losses, such as ablation, charged particle emission, charring, and chemical changes in the target materials. Directed-energy impact on the target material leads to target heating and consequent ablation. In this paper, a numerical model has been developed to describe the laser induced ablation of metal surfaces. The model describes the absorption of the laser energy by the metal and the resulting temperature rise in the surface. This temperature rise then induces ablation of the target material. Results for an aluminum target irradiated with a KrF laser were obtained. Temperature profiles in the target material and surface temperature changes are presented along with the ablation rate as a function of time as the aluminum target is irradiated. This report presents results for cases when laser energy absorption by the plasma plume created above the surface is not significant.
    • OPERATOR INTERFACES FOR CONTROLLING THE SERIAL STREAMING TELEMETRY CHANNEL VIA A COMMAND AND CONTROL LINK

      Laird, Daniel T.; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      The Central Test and Evaluation Incentive Program, (CTEIP) is developing Integrated Network Enhanced Telemetry (iNET) to extend serial streaming telemetry (SST) with a command and control link. Command link interfaces link remote Advanced Range Telemetry (ARTM) transmitters (Tx) and receivers (Rx), developed under the ARTM CTEIP project, via graphical user interfaces (GUI). The communication channel links the iNET Tx on a vehicle network (vNET) and the iNET Rx on a ground station network (gNET) via a single GUI. The command link is an essential part of the pending iNET Technology Demonstration.
    • PERFORMANCE CHARACTERIZATION OF MULTI-BAND ANTENNAS FOR AERONAUTICAL TELEMETRY

      Temple, Kip; Jefferis, Robert; Selbrede, Robert; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      This paper baselines the performance of common, single band telemetry blade antennas in two telemetry bands and compares that performance to two very differing multi-band antenna designs. A description of each antenna is presented followed by flight testing results and conclusions. Results are in the form of received signal strength versus geographic location, derived in-flight antenna patterns, link availability, and bit error analysis.
    • TOWARDS FULLY AUTOMATED INSTRUMENTATION TEST SUPPORT

      Jones, Charles H.; Edwards Air Force Base (International Foundation for Telemetering, 2007-10)
      Imagine that a test vehicle has just arrived at your test facility and that it is fully instrumented with sensors and a data acquisition system (DAS). Imagine that a test engineer logs onto the vehicle’s DAS, submits a list of data requirements, and the DAS automatically configures itself to meet those data requirements. Imagine that the control room then contacts the DAS, downloads the configuration, and coordinates its own configuration with the vehicle’s setup. Imagine all of this done with no more human interaction than the original test engineer’s request. How close to this imaginary scenario is the instrumentation community? We’re not there yet, but through a variety of efforts, we are headed towards this fully automated scenario. This paper outlines the current status, current projects, and some missing pieces in the journey towards this end. This journey includes standards development in the Range Commander’s Council (RCC), smart sensor standards development through the Institute of Electrical and Electronics Engineers (IEEE), Small Business Innovation Research (SBIR) contracts, efforts by the integrated Network Enhanced Telemetry (iNET) project, and other projects involved in reaching this goal.