• HOW WELL DOES A BLIND, ADAPTIVE CMA EQUALIZER WORK IN A SIMULATED TELEMETRY MULTIPATH ENVIRONMENT

      Law, Eugene; NAVAIR (International Foundation for Telemetering, 2004-10)
      This paper will present the results of experiments to characterize the performance of a blind, adaptive constant modulus algorithm (CMA) equalizer in simulated telemetry multipath environments. The variables included modulation method, bit rate, received signal-to-noise ratio, delay of the indirect path relative to the direct path, amplitude of the indirect path relative to the direct path, and fade rate. The main measured parameter was bit error probability (BEP). The tests showed that the equalizer usually improved the data quality in the presence of multipath.
    • THE RESEARCH ON THE HSP50214 PDC CHIP APPLYING TO FDM TELEMETRY SYSTEM

      Peng, Song; XiaoLin, Zhang; Wei, Zhang; North China University of Technology; Beijing University of Aeronautics and Astronautics (International Foundation for Telemetering, 2004-10)
      The content of this paper is putting forward an idea that applies the software radio technique to the subcarrier demodulation of frequency divided multiplexing telemetry system. Firstly, the article explains the basic thought and application of the software radio. It introduces the main function and the use of the programmable downconverter in HSP50214/ HSP50216. Secondly, it discusses the merit and shortcoming about the method of the subcarrier demodulation of frequency divided multiplexing telemetry system in common use. Finally, the article aims at ± 7.5% proportion bandwidth FM subcarrier channels that in common use in the military standard, introducing HSP50214/HSP50216 programmable downconverter in achievement of design and simulation result. The main problems in the design are discussed and a conclusion obtained.
    • AN INSTRUMENTATION CONTROL SYSTEM THAT UTILIZES AN AVIONICS PILOT DISPLAY INTERFACE

      Wegener, John A.; Zettwoch, Robert N.; The Boeing Company (International Foundation for Telemetering, 2004-10)
      Flight Test instrumentation control units have traditionally been low-technology units with mechanical switches, readouts, and perhaps an RS232 interface. As the complexity of Flight Test Instrumentation systems and operational requirements increase, and as cockpit space becomes scarce, these control units are no longer sufficient. These control units need to provide capabilities commensurate with the complexity of the instrumentation systems they control. This paper describes an instrumentation control system that uses a Boeing Integrated Defense Systems (IDS) Flight Test Instrumentation designed Instrumentation Control Unit (ICU). The ICU communicates with the avionics system to allow pilot control via existing aircraft displays. By taking advantage of a relatively simple protocol to interface with the avionics system, the substantial cost of reprogramming the avionics software is avoided, and software control is shifted to the Flight Test group, thus allowing a tremendous increase in system flexibility at reasonable cost. Functions of the unit can be changed relatively quickly and inexpensively. This promises a wide range of future applications, such as in-flight monitoring of flight-critical instrumentation parameters by the pilot, control of the instrumentation system via uplink (with pilot override), and real-time in-flight selection of telemetered data streams and parameters. This paper describes the baseline instrumentation control system and requirements to be used on the EA-18G Flight Test Program, plus additional future capabilities.
    • IMPLEMENTING A TACTICAL TELEMETRY STYSTEM FOR MULTIPLE LAUNCH ROCKET SYSTEM (MLRS) STOCKPILE RELIABILITY TESTING

      Cox, Corry; Redstone Technical Test Center (International Foundation for Telemetering, 2004-10)
      The Precision Fires Rocket and Missile Systems (PFRMS) Program Office continually undertakes Stockpile Reliability Testing (SRP) to ensure the validity of the accumulated weapons and increase the she lf life of these weapon systems. MLRS is a legacy weapon system that has been undergoing SRP testing for over 20 years. The PFRMS Program Office has a need for a miniature Tactical Telemetry System that will monitor the fuze performance of the MLRS Rocket during SRP testing. This paper will address a technical approach of how a small Tactical Telemetry System could be built to meet this requirement. The Tactical Telemetry system proposed in this paper will monitor fuze functions, operate across the wide environmental spectrum of the SRP tests, and physically fit in the nose area without altering the overall tactical rocket appearance or operation.
    • Implementation of A 30-Channel PCM Telemetry Encoder

      Kim, Jung Sup; Jang, Myung Jin; Agency for Defense Development (International Foundation for Telemetering, 2004-10)
      The function of a PCM telemetry encoder, installed in moving vehicles such as automobiles, aircraft, missiles, and artillery projectiles, is to transform many physical variables, such as velocity, shock, temperature, vibration and pressure, into digital data. Also, the encoder is required to make a data frame composed of digital input signals and frame synchronous data. The framed data is supplied to the input of a transmitter. There are three critical considerations in developing a PCM telemetry encoder to be installed in an artillery projectile. The first is the performance consideration, such as sampling rate, data receiving rate and data transmission rate. The second is the size consideration due to the severely limited installation space in an artillery projectile and the last is the power consumption consideration due to limitations of the munition’s power supply. To meet these three considerations, the best alternative is a one-chip solution. Using a commercially available TMS320F2812 DSP chip, we have implemented a 30-channel PCM telemetry encoder to process randomized data frames, composed of 16-channel analog data, 14-channel digital data and 2 frame synchronization data per data frame, at 10Mbps transmission baud rate. This paper describes the structure of the 30-channel PCM telemetry encoder and its performance.
    • THE APPLICATION OF DIGITAL DEMODULATION TECHNIQUE FOR FREQUENCY MODULATION SIGNAL IN TELEMETRY RECEIVER

      Peng, Song; XiaoLin, Zhang; Xue, Cao; Xia, Qi; North China University of Technology; Beijing University of Aeronautics and Astronautics; China Luoyang Optoelectro Technology Development Center (International Foundation for Telemetering, 2004-10)
      Combined with an example of digital telemetry receiver design, this paper mainly discusses the application of software radio in telemetry receiver. The paper begins with an introduction of applying high efficiency digital filter and math analysis in quadrature digital frequency modulation and demodulation to digital frequency conversion technique. Next, Simulink/Matlab is used to simulate digital telemetry receiver. The method of simulation, analysis and calculation of performance and result of simulation are all available. In the end, the paper discusses digital telemetry receiver design and implement by making use of software radio technique, the circuits apply HSP50214 chip of Intersil Co., CPLD implements of Altera Co. and PC Bus. The sample is an expansion card for personal computer. Result of test, performance of the receiver and conclusion are given out, which show fine performance of receiver and can be apply to practice. The lever of this technology has reached first class in the world.
    • EXTENSION OF A COMMON DATA FORMAT FOR REAL-TIME APPLICATIONS

      Wegener, John A.; Davis, Rodney L.; The Boeing Company (International Foundation for Telemetering, 2004-10)
      The HDF5 (Hierarchical Data Format) data storage family is an industry standard format that allows data to be stored in a common format and retrieved by a wide range of common tools. HDF5 is a widely accepted industry standard container for data storage developed by the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana-Champaign. The HDF5 data storage family includes HDF-Time History, intended for data processing, and HDF-Packet, intended for real-time data collection; each of these is an extension to the basic HDF5 format, which defines data structures and associated interrelationships, optimized for that particular purpose. HDF-Time History, developed jointly by Boeing and NCSA, is in the process of being adopted throughout the Boeing test community and by its external partners. The Boeing/NCSA team is currently developing HDF-Packet to support real-time streaming applications, such as airborne data collection and recording of received telemetry. The advantages are significant cost reduction resulting from storing the data in its final format, thus avoiding conversion between a myriad of recording and intermediate formats. In addition, by eliminating intermediate file translations and conversions, data integrity is maintained from recording through processing and archival storage. As well, HDF5 is a general-purpose wrapper, into which can be stored processed data and other data documentation information (such as calibrations), thus making the final data file self-documenting. This paper describes the basics of the HDF-Time History, the extensions required to support real-time acquisition with HDF-Packet, and implementation issues unique to real-time acquisition. It also describes potential future implementations for data acquisition systems in different segments of the test data industry.
    • THE DESIGN OF A SINGLE CARD TELEMETRY MODULE FOR SMART MUNITION TESTING

      Oder, Stephen; Dearstine, Christina; Webb, Amy; Muir, John; Bahl, Inder; Burke, Larry; Stone, Weyant; M/A-COM, Inc. (International Foundation for Telemetering, 2004-10)
      M/A-COM, Inc. has developed a miniature Tactical Telemetry Module (TTM) for medium power (500 mW and 1 W) telemetry applications. The TTM demonstrates system integration of a multi-channel PCM encoder, lower S-band transmitter, and power regulation onto a single printed wiring board (PWB). The module is smaller than a standard business card and utilizes both COTS and M/A-COM proprietary technologies. The PCM encoder is designed for eight (8) analog inputs, eight (8) discrete inputs, and one (1) synchronous RS-422 serial interface. Data rates of 300 kbps to 6 Mbps are supported. The module incorporates a frequency programmable, phase-locked FM S-band transmitter. The transmitter utilizes M/A-COM’s new dual port VCO and high efficiency 500 mW and 1 W power amplifier MMIC’s. Additionally, switching power regulation circuits were implemented within the module to provide maximum operating efficiency. This paper reviews the design and manufacturing of the Tactical Telemetry Module (TTM) and its major components, and presents system performance data.
    • MINIATURE TELEMETRY SYSTEM FOR THE COMPACT KINETIC ENERGY MISSILE

      Haataja, M. Shannon; Ambrose, Mark; Redstone Arsenal; ERC, Inc. (International Foundation for Telemetering, 2004-10)
      The Compact Kinetic Energy Missile (CKEM) is currently being developed as the Army’s newest hypervelocity anti-tank missile. The project has recently transitioned from the Science and Technology Objective phase to the Advanced Technology Demonstration phase. Science and technology phase flight testing required the development of a miniature telemetry system for measuring the super sonic flight dynamics of the airframe, as well as, monitoring of the on board flight computer. Design challenges included a small mechanical envelope, limited power budget, numerous analog measurements, computer serial stream processing, and harsh launch and flight dynamics. Two versions of the system were developed in support of the partnership effort between the Army Missile Research, Development, and Engineering Center (AMRDEC) and industry. This paper will focus on the successful design, development, and flight tests of the CKEM telemetry system.
    • THE RESEARCH OF A NEW MULTIUSER DETECTION SCHEME COMBINING DECORRELATING DETECTOR AND PARTIAL PARALLEL INTERFERENCE CANCELLER

      Wang, Yongjian; Zhou, Tingxian; Institute of Technology (International Foundation for Telemetering, 2004-10)
      The decorrelating detector can afford good data estimates because it does not need to know many parameters of the received signal. However, it shows great performance deprivation when the background noise is high. On the other hand, partial parallel interference canceller(PPIC) has the potential to combat the near-far problem and have much lower computation complexity. But its performance depends on the initial data estimate. An improved PPIC scheme is proposed in this paper to combat the near-far problem. It utilizes the advantages of the two detectors by combining them. The focus of this paper is on the BER performance and the near-far resistance capability of the proposed scheme. Computer simulations demonstrate that the proposed detector has good BER performance and near-far resistance capability.
    • OBJECT RECOGNITION BY GROUND-PENETRATING RADAR IMAGING SYSTEMS WITH TEMPORAL SPECTRAL STATISTICS

      Ono, Sashi; Lee, Hua; University of California (International Foundation for Telemetering, 2004-10)
      This paper describes a new approach to object recognition by using ground-penetrating radar (GPR) imaging systems. The recognition procedure utilizes the spectral content instead of the object shape in traditional methods. To produce the identification feature of an object, the most common spectral component is obtained by singular value decomposition (SVD) of the training sets. The identification process is then integrated into the backward propagation image reconstruction algorithm, which is implemented on the FMCW GPR imaging systems.
    • JOINT RANGE SYSTEMS INTEROPERABILITY ACHIEVED THROUGH THE IMPLEMENTATION OF THE TEST AND TRAINING ENABLING ARCHITECTURE (TENA)

      Hudgins, B. Gene; Lucas, Jason; TENA; Eglin Air Force Base (International Foundation for Telemetering, 2004-10)
      The Foundation Initiative 2010 (FI 2010) project, sponsored by the Office of the Secretary of Defense (OSD) Central Test and Evaluation Investment Program (CTEIP), has developed and is continuing to refine a common architecture and requisite software used to integrate testing, training, and simulation systems distributed across many DoD test and training range facilities. The Test and Training Enabling Architecture (TENA), has been successfully implemented on DoD and commercial range instrumentation systems, used as a reusable enabler of distributed, live United States Joint Forces Command (USJFCOM) and Joint National Training Capability (JNTC) exercises.
    • AN OPEN ARCHITECTURE AND MIDDLEWARE FOR COLLECTIVE ROBOT TEAMS

      Marefat, Michael; Reagan, John; Lesmeister, Micah; Elhourani, Theodore; University of Arizona (International Foundation for Telemetering, 2004-10)
      In this paper we propose an open multi-robot architecture that dramatically reduces the time to deployment and increases the utility value to the mainstream non-technical user. We describe a multi-robot behavior-based coordination architecture and argue its suitability in the context of general-purpose robot teams operating in dynamic and unpredictable environments. We then formalize and describe a command fusion module for the coordination of high-level behaviors of the system. The command fusion module is interfaced to our middle-ware/compiler that generates behavior selection tips from a user specified abstract description of a scenario. Finally, we utilize an example search and rescue scenario to illustrate the overall process and give preliminary results of the experiments performed on actual robots.
    • Analysis of Optimized Design Tradeoffs in Application of Wavelet Algorithms to Video Compression

      Wanis, Paul; Fairbanks, John S.; L-3 Communications Corporation (International Foundation for Telemetering, 2004-10)
      Because all video compression schemes introduce artifacts into the compressed video images, degradation occurs. These artifacts, generated by a wavelet-based compression scheme, will vary with the compression ratio and input imagery, but do show some consistent patterns across applications. There are a number of design trade-offs that can be made to mitigate the effect of these artifacts. By understanding the artifacts introduced by video compression and being able to anticipate the amount of image degradation, the video compression can be configured in a manner optimal to the application under consideration in telemetry.
    • HIGH ALTITUDE TRANSMITTER FLIGHT TESTING

      Brown, K. D.; Sorensen, Trevor; NNSA ’s Kansas City Plant; University of Kansas (International Foundation for Telemetering, 2004-10)
      This paper describes a high altitude experimental flight test platform developed by the University of Kansas (KU) and the National Nuclear Security Administration’s Kansas City Plant (NNSA’s Kansas City Plant) for high altitude payload flight testing. This platform is called the Kansas University Balloon Experiment Satellite (KUBESat). The paper describes the flight test platform and experimental flight test results captured at Fort Riley, KS from characterization of the KCP developed Distributed Transmitter (DTX).
    • TIME SYNCHRONIZATION AND FREQUENCY PRECISION CONTROL AMONG MULTIPLE BASE STATIONS IN GPS

      Haifang, Wang; Qishan, Zhang; Beijing University (International Foundation for Telemetering, 2004-10)
      In this paper, we develop a method for achieving high precision of time and frequency synchronization among multiple base stations in GPS system. We first describe the basic theory of timing and frequency checking, and then analyze several error sources which influence the precision of time and frequency synchronization. Furthermore, we derive explicit formula for calculating the precision of time and frequency. Tested results have indicated that our method can indeed achieve very high time and frequency precision.
    • MAINTAINING SIGNAL FIDELITY WHILE USING A PACKETIZED TRANSPORT SYSTEM

      Hankey, Robert L.; Krasinski, Kevin; Apogee Labs, Inc. (International Foundation for Telemetering, 2004-10)
      Packetizing data for transport over a networked system corrupts embedded information such as absolute and relative timing from the data. Without this information, it is difficult to reproduce the data with its original timing restored. Absolute timing is the time between data points within a given channel of data. Relative timing is the time relationship between data points from two or more channels of data. Having this restored timing allows the use of existing equipment for analysis and eliminates the need for expensive custom designed equipment to analyze the recovered data. Using a packetizing solution that transports information about the data stream and transport packets that are broken up by system wide timing allows us to accomplish this.
    • THE MODULAR RANGE INTERFACE (MODRI) DATA ACQUISITION CAPABILITIES AND STRATEGIES

      Marler, Thomas M.; TYBRIN Corporation (International Foundation for Telemetering, 2004-10)
      The Modular Range Interface (ModRI) is a reliable networked data acquisition system used to acquire and disseminate dissimilar data. ModRI’s purpose is to connect TSPI systems to a central computer network. The modular hardware design consists of an SBC, COTS network interfaces, and other COTS interfaces in a VME form factor. The modular software design uses C++ and OO patterns running under an RTOS. Current capabilities of ModRI include acquisition of Ethernet, PCM data, RS-422/232 serial data, and IRIG-B time. Future strategies might include stand-alone data acquisition, acquisition of digital video, and migration to other architectures and operating systems.
    • EMI AND SOFTWARE IMPROVEMENTS TO THE SOLAR MINER IV TELEMETRY PROCESSOR

      DeConink, Chad; DeConink, Sarah; Dean, James; Martin, Brad; Kosbar, Kurt; University of Missouri (International Foundation for Telemetering, 2004-10)
      The UMR Solar Car uses a telemetry processor to collect, compute, and transmit data to the driver of the car and a nearby chase vehicle. The original processor had deteriorated from environmental extremes and vibration. There were also problems with electromagnetic interference from the high efficiency electric motor switching electronics, difficulties with the many unplanned additions made to the processor in the field, and the unstructured software that was becoming difficult to maintain. This project consists of creating a replacement telemetry system that is more robust mechanically, and electrically, substantially improving the EMI performance of the device, and reworking the hardware and software to make it easier to maintain and upgrade.
    • THE BASE STATION TELEMETRY DATA PROCESSING SYSTEM FOR UNMANNED HELICOPTERS

      Bin, Xu; XiaoLin, Zhang; Guolei, Lu; Weiwei, Hu; Beihang University (International Foundation for Telemetering, 2004-10)
      This paper discusses the design and implementation of the base station telemetry data processing system for the unmanned helicopter. The system designed is composed of code synchronizer, decoding and frame synchronizer as well as PCI bus interface. The functions of the system are implemented with very large integrated circuits and a standard PCI inserted card that is compact and easy to install. The result of flight performance tests shows that the system is reliable and can satisfy the requirements of telemetry system for unmanned helicopters.