• The Technology of DBPSK Modulation-Demodulation for Telecommand in Remote Control Test System

      Song, Peng; Han, Yu-long; Mao, Chi-heng; Huang, Kun; North China University of Technology (International Foundation for Telemetering, 2009-10)
      This design adopts the software radio and DBPSK(Differential Binary Phase Shift Keying)modulation-demodulation, which detects the telecommand receiving by the guided-missile system correctly. The DBPSK modulation module in Altera FPGA chip converts the binary telecommand into DBPSK signal, which will be frequency modulated after D/A conversion. In the receiver, the FM signal is demodulated and A/D converted before sending to the FPGA. The DBPSK demodulation module in FPGA finally gets the telecommand which will be tally with the telecommand from transmitter. At last, the whole DBPSK modulation-demodulation module is embedded into the remote control test system. The design is working properly and meeting the requirements of the test system.
    • Telemetry Recorders and Disruptive Technologies

      Kortick, David; Astro-Med, Inc. (International Foundation for Telemetering, 2009-10)
      Telemetry data recorders are not immune to the effects that a number of disruptive technologies have had on the telemetry industry. Data recorder designs today make use of data buses, storage types and graphical user interfaces that are constantly evolving based on the advances of personal computer and consumer electronics technologies. Many of these recorders use embedded designs that integrate disruptive technologies such as PCI Express for realtime data and signal processing, SATA interfaces for data storage and touchscreen technologies to provide an intuitive operator interface. Solid state drives also play a larger role in the latest recorder designs. This paper will explore the effects of these technologies on the latest telemetry recorders in terms of the benefits to the users, cost of implementation, obsolescence management, and integration considerations. The implications of early adoption of disruptive technologies will also be reviewed.
    • A Telemetry System for Firefighters

      Marcellin, Michael; Melde, Kathleen; Uprety, Sandip; Caglio, Joseph; Ho, Michelle; Chio, Chi Hou; Mckeefery, Stephanie; Goh, Jae Hyok; University of Arizona (International Foundation for Telemetering, 2009-10)
      In this project, a telemetry system is implemented to save firefighters from potential danger in their working environment. Each Firefighter has a "node" or "unit" attached to them which contains temperature, oxygen, and carbon-monoxide sensors, and a transceiver. Each node constantly transmits data collected by the sensors to a central "base station." The base station consists of a laptop which is monitored by the Fire Chief at a safe distance from the scene, and it displays gas levels. The base station monitors the sensor readings, and sets off an alarm locally and also at the node if a reading has reached a predetermined critical value.
    • Temporal, Spectral, and Spatial Treat Simulation Using a Towed Airborne Plume Simulator (TAPS)

      Taylor, Rick; Redmond, Neal; Balding, Jeff; Science Applications International Corporation; Center for Countermeasures (International Foundation for Telemetering, 2009-10)
      Efforts are underway to develop Infrared countermeasure (IRCM) systems to defend aircraft against IR guided surface-to-air (SAM) and air-to-air (AAM) missiles. One such system is the Large Aircraft Infrared Counter Measure (LAIRCM) which employs temporal, spatial, and spectral missile warning techniques. There is no current technique however, for installed system flight testing of such countermeasures in a realistic temporal, spatial, and spectral environment. This paper is an introduction to the Towed Airborne Plume Simulator (TAPS), a system designed to address this test shortfall. The TAPS operational concept is described as well as techniques for simulating missile signatures.
    • TENA Performance in a Telemetry Network System

      Saylor, Kase J.; Wood, Paul B.; Malatesta, William A.; Abbott, Ben A.; Southwest Research Institute; Naval Air Systems Command (NAVAIR) (International Foundation for Telemetering, 2009-10)
      The integrated Network-Enhanced Telemetry (iNET) project conducted an assessment to determine how the Test and Training Enabling Architecture (TENA) would integrate into an iNET Telemetry Network System (TmNS), particularly across constrained environments on a resource constrained platform. Some of the key elements investigated were quality of service measures (throughput, latency, and reliability) in the face of projected characteristics of iNET Data Acquisition Unit (DAU) devices including size, weight, and power (SWAP), and processing capacity such as memory size and processor speed. This paper includes recommendations for both the iNET and TENA projects.
    • Terahertz Spectroscopy for Medical Instrumentation Development

      Li, W.; Singh, R. S.; Suen, J. Y.; Taylor, Z. D.; Culjat, M. O.; Grundfest, W. S.; Brown, E. R.; Lee, H.; University of California, Santa Barbara; University of California, Los Angeles (International Foundation for Telemetering, 2009-10)
      Recent development of sources and detectors in the THz regime (300 GHz to 3 THz) has enabled the precise measurement of material properties, including complex refractive indexes and loss tangents. Using our developed THz spectrometer, new data, in particular, of biological tissues has been used to develop potential THz medical imaging applications. In this paper, an overview of a 0.1-3 THz, with sub-GHz resolution spectroscopy system is presented that has been designed in particular to measure biological samples and provide data that will used to determine initial viability of THz medical imaging applications.
    • The Test and Training Enabling Architecture (TENA) Enabling Technology for the Joint Mission Environment Test Capability (JMETC) in Live, Virtual, and Constructive (LVC) Environments

      Hudgins, Gene; Poch, Keith; Secondine, Juana; TENA Software Development Activity (SDA) (International Foundation for Telemetering, 2009-10)
      The Joint Mission Environment Test Capability (JMETC) is a distributed live, virtual, and constructive (LVC) testing capability developed to support the acquisition community and to demonstrate Net-Ready Key Performance Parameters (KPP) requirements in a customer-specific Joint Mission Environment (JME). JMETC, using the Test and Training Enabling Architecture (TENA), provides connectivity to the Services' distributed test capabilities and simulations, and Industry test resources. TENA is well-designed for supporting JMETC events through its architecture and software capabilities which enable interoperability among range instrumentation systems, facilities, and simulations. TENA, used in major exercises and distributed test events, is also interfacing with other emerging range systems.
    • Towards a Low Complexity Implementation of a Multi-H CPM Demodulator

      Guéguen, Arnaud; Auvray, David; Zodiac Data Systems (International Foundation for Telemetering, 2009-10)
      Multi-h Continuous Phase Modulation (CPM) is a promising waveform for aeronautical telemetry because it is a compact spectrally efficient constant amplitude modulation. It has been selected as the Advanced Range Telemetry (ARTM) tier II waveform owing to these qualities. However, it is also a complicated waveform that has the reputation of suffering from complex demodulation processing and high sensitivity to transmission impairments and in particular synchronization aspects. In this paper we review a set of complexity reduction techniques that intend to bring this waveform into the domain of operational telemetry waveform, by allowing low complexity hardware implementation without sacrificing performance or robustness. Most techniques are adjustments of recent literature results, concerning both demodulation and synchronization. Computer simulation of a receiver implementing theses techniques shows negligible performance loss compared to optimal coherent demodulation with perfect synchronization. Hardware implementation confirms that nearly optimal performance can be achieved with hardware resource currently available in middle range FPGAs.
    • Traceable Enterprise Information Security Architecture Methodology

      Dean, Richard; Brown-Moorer, Charlotte A.; Morgan State University (International Foundation for Telemetering, 2009-10)
      With the introduction of networking into telemetry applications, these systems have become increasingly complex. This imposes significant strain on information security for architecture designs. It has been recognized that an organized or structured approach to developing security architectures is needed. Several enterprise architecture frameworks are available today that address system complexity. However they fall short of addressing security at a high enough level in the enterprise and address security too late in the design process. In this paper a methodology is proposed that bridges the gap between security requirements and architecture design development at the enterprise level. This approach is consistent with and traceable to the original needs of the customer. This paper introduces a systems engineering approach to develop an enterprise level methodology, and presents a worked example of this approach for the integrated Network Enhanced Telemetry system.
    • Upgrade of RCB Receivers for C-Band Reception

      Hamilton, Terry; L-3 Communications Telemetry East; Global Network Solutions (International Foundation for Telemetering, 2009-10)
      Existing telemetry ground receivers typically operate in a bandwidth between 215MHz to 2485MHz, while the new C-Band covers 4.4GHz to 5.15GHz. Additionally, some installations are choosing to incorporate down converters in the antenna as an alternate approach. This paper describes an innovative approach to solving all of these problems, by enhancing the capabilities of existing range assets. The plan is to upgrade existing fielded receivers without impacting their existing functionality to also include C-Band reception. The upgrade module along with the software revision will provide the user with a fully functional receiver in the existing bands and the newly added bands. This will be accomplished by the development of an advanced down converter sections with coverage across all bands that will replace existing modules within the telemetry receivers. It is the details of this development that will be presented.
    • Using Generic Telemetry Prognostic Algorithms for Launch Vehicle and Spacecraft Independent Failure Analysis Service

      Losik, Len; Failure Analysis (International Foundation for Telemetering, 2009-10)
      Current equipment and vehicle failure analysis practices use diagnostic technology developed over the past 100 years of designing and manufacturing electrical and mechanical equipment to identify root cause of equipment failure requiring expertise with the equipment under analysis. If the equipment that failed had telemetry embedded, prognostic algorithms can be used to identify the deterministic behavior in completely normal appearing data from fully functional equipment used for identifying which equipment will fail within 1 year of use, can also identify when the presence of deterministic behavior was initiated for any equipment failure.
    • Using Oracol® for Predicting Long-Term Telemetry Behavior for Earth and Lunar Orbiting and Interplanetary Spacecraft

      Losik, Len; Failure Analysis (International Foundation for Telemetering, 2009-10)
      Providing normal telemetry behavior predictions prior to and post launch will help to stop surprise catastrophic satellite and spacecraft equipment failures. In-orbit spacecraft fail from surprise equipment failures that can result from not having normal telemetry behavior available for comparison with actual behavior catching satellite engineers by surprise. Some surprise equipment failures lead to the total loss of the satellite or spacecraft. Some recovery actions as a consequence of a surprise equipment failure are high risk and involve decisions requiring a level of experience far beyond the responsible engineers.
    • Using Telemetry Science, An Adaptation of Prognostic Algorithms for Predicting Normal Space Vehicle Telemetry Behavior from Space for Earth and Lunar Satellites and Interplanetary Spacecraft

      Losik, Len; Failure Analysis (International Foundation for Telemetering, 2009-10)
      Prognostic technology uses a series of algorithms, combined forms a prognostic-based inference engine (PBIE) for the identification of deterministic behavior embedded in completely normal appearing telemetry from fully functional equipment. The algorithms used to define normal behavior in the PBIE from which deterministic behavior is identified can be adapted to quantify normal spacecraft telemetry behavior while in orbit about a moon or planet or during interplanetary travel. Time-series analog engineering data (telemetry) from orbiting satellites and interplanetary spacecraft are defined by harmonic and non-harmonic influences which shape it behavior. Spectrum analysis can be used to understand and quantify the fundamental behavior of spacecraft analog telemetry and relate the behavior's frequency and phase to its time-series behavior through Fourier analysis.
    • Virtualization Security Issues in Telemetry Post-Processing Environments

      Kalibjian, Jeff; Hewlett Packard Corporation (International Foundation for Telemetering, 2009-10)
      Virtualization technologies have the potential to transform the telemetry post-processing environment. Significant efficiencies can be gained by migrating telemetry post processing activities to virtual computing platforms. However, while facilitating better server utilization, virtualization also presents several challenges; one of the most difficult of those challenges being security. In virtualization, server environments are replicated in software; unfortunately, the security individual servers provide is not replicated in a software stack implementation of a server environment. After reviewing virtualization fundamentals, security issues and their impact on telemetry post processing will be discussed.
    • A Wireless Telemetry System to Monitor Gait in Patients with Lower-Limb Amputation

      Fan, Richard E.; Wottawa, Christopher R.; Wyatt, Marilynn P.; Sander, Todd C.; Culjat, Martin O.; Culjat, Martin O.; Center for Advanced Surgical and Interventional Technology (CASIT); UCLA; Naval Medical Center San Diego; Naval Health Research Center (International Foundation for Telemetering, 2009-10)
      Even after rehabilitation, patients with lower-limb amputation may continue to exhibit suboptimal gait. A wireless telemetry system, featuring force sensors, accelerometers, control electronics and a Bluetooth transmission module was developed to measure plantar pressure information and remotely monitor patient mobility. Plantar pressure characterization studies were performed to determine the optimal sensor placement. Finally, the wireless telemetry system was integrated with a previously developed haptic feedback system in order to allow remote monitoring of patient mobility during haptic system validation trials.