• ON THE PERFORMANCE OF FILTER BASED EQUALIZERS FOR 16APSK IN AERONAUTICAL TELEMETRY ENVIRONMENT

      Arabian, Farah; Rice, Michael; BYU, Department of Electrical and Computer Engineering (International Foundation for Telemetering, 2018-11)
      16APSK is a candidate modulation for aeronautical telemetry because it has better spectral efficiency than SOQPSK-TG, but requires a linear RF power amplifier. This paper investigates the BER performance of filter-based equalizers for 16APSK operating over multipath channels measured at Edwards AFB. The results show that decision feedback equalizers outperform the other equalizers and are capable of providing excellent multipath mitigation.
    • COMPRESSION, WHY, WHAT AND COMPROMISES

      Hightower, Paul; Instrumentation Technology Systems (International Foundation for Telemetering, 2018-11)
      Each 1080 video frame requires 6.2 MB of storage; archiving a one minute clip requires 22GB. Playing a 1080p/60 video requires sustained rates of 400 MB/S. These storage and transport parameters pose major technical and cost hurdles. Even the latest technologies would only support one channel of such video. Content creators needed a solution to these road blocks to enable them to deliver video to viewers and monetize efforts. Over the past 30 years a pyramid of techniques have been developed to provide ever increasing compression efficiency. These techniques make it possible to deliver movies on Blu-ray disks, over Wi-Fi and Ethernet. However, there are tradeoffs. Compression introduces latency, image errors and resolution loss. The exact effect may be different from image to image. BER may result the total loss of strings of frames. We will explore these effects and how they impact test quality and reduce the benefits that HD cameras/lenses bring telemetry.
    • REAL-TIME MONITORING TECHNOLOGY OF INLET DISTORTION SIGNAL

      Huang, Ruchang; Wei, Guobo; Wang, Zhongjie; Li, Panwen; Chinese Flight Test Establishment (International Foundation for Telemetering, 2018-11)
      In the flight test, the matching compatibility of the fighter inlet and the engine is the key to the test flight of the engine performance quality. Especially at high incidence of high attack angle and over stall maneuver, the characteristics of the inlet are very important to the engine. The current traditional test scheme cannot real-time telemeter the inlet distortion signal.This paper aims at the problem by designing an embedded airborne real-time processing unit which can real-time calculate and telemetry of the inlet distortion signal. Then the results are displayed in the ground monitoring station by cloud image mode. So we can evaluate the matching performance of the inlet and engine during aircraft flight, and achieve the aim of prejudging the risk of inlet distortion.
    • AEROBALLISTICS MODULAR MODALITIES (AMM): A MODULAR INSTRUMENTATION SYSTEM FOR PROJECTILES

      Barton, Aaron; Granitzki, Richard; Casella, Vincent; Stout, Christopher; Marshall, Eric; U.S. Army Armament Research Development and Engineering Center (International Foundation for Telemetering, 2018-11)
      Munition telemetry engineers are posed with the challenge of developing ruggedized, precision instrumentation for various projectile bodies. Much of the hardware is custom, and engineers must address numerous concurrent electrical and mechanical integration issues within a limited schedule. The Aeroballistics Modular Modalities (AMM) system is a miniaturized, modular, open-architecture platform which provides a pre-made, tailorable system for developing projectile instrumentation electronics. The system excels at capturing projectile dynamics data, where the sensors can be chosen a-la-carte. The system is highly-customizable, and can be tailored to any instrumentation package.
    • International Telemetering Conference Proceedings, Volume 54 (2018)

      International Foundation for Telemetering, 2018-11
    • TELLING THE T&E STORY USING ANALYTICS-BASED NARRATIVE VISUALIZATION

      Painter, Michael K.; Madanagopal, Karthic; Swaminathan, Kannan; Jones, Charles H.; Knowledge Based Systems, Inc.; C. H. Jones Consulting, LLC (International Foundation for Telemetering, 2018-11)
      There continues to be growing pressure to sell off spectrum currently allocated for defense purposes in favor of private sector applications, prompting concerns that we will soon reach a point where Department of Defense (DoD) needs can no longer be met. In response, the Range Commanders Council (RCC) Frequency Management Group (FMG) developed a baseline set of standard metrics to measure spectrum utilization, demand, efficiency, and operational effectiveness. Using this standard (RCC 707-14) as a foundation, a Spectrum Management Metrics Toolkit (SMMT) has been developed to calculate, plot, and display these metrics. The challenge now is leveraging these metrics to inform and construct the arguments needed to maintain access to needed spectrum. The purpose of this paper is to describe progress toward the development of a methodology and a set of analytics based on the RCC standard to build such a compelling narrative. The methodology is based on a data analytics and communication concept, called “Story Points,” which seeks to guide users in the discovery, composition, and delivery of targeted narratives and supporting graphics derived through mining available data sources.
    • SCALABILITY OF MESH NETWORK TELEMETRY FOR SWARMS OF UNMANNED AERIAL SYSTEMS

      Keshmiri, Shawn; Hauptman, Dustin; Shukla, Daksh; Blevins, Aaron; University of Kansas, Electrical Engineering & Computer Science Department; University of Kansas, Department of Aerospace Engineering (International Foundation for Telemetering, 2018-11)
      Swarms of autonomous unmanned aerial systems (UASs) are becoming increasingly popular as efficient replacement for manned aircraft. The major component that makes the swarm of UASs possible is an efficient exchange of aircrafts states (e.g. position & velocity) for all agents and the ground station. Advanced communication technologies are required to be implemented on each agent to enable real-time communication at high frequencies (e.g. 20 Hz) to avoid inter collisions and holding formations. To assess mesh network limitations and to identify bottlenecks, a series of simulations are carried out using actual hardware that is used for swarms of UASs, which are: (1) Amount of bandwidth that can be guaranteed given the communication system being used (XBee-900HP), each plane that the KU team uses, transmits 127 variables, 4 bytes each, at 20 Hz which means each plane needs 10 KBps and the mesh network might be able to support 53 UASs theoretically (2) Range limitations (3) Latency issues.
    • Test Range Spectrum Management with LTE-A

      Picha, Bob; Nokia Corporation of America (International Foundation for Telemetering, 2018-11)
    • Research on Embedded Real-time Processing Technology of ARINC429 Bus Dynamic Logic Block

      Qi, Shengyuan; Wang, Zhongjie; Shi, Fenglei; Qi, Xiaopeng; China Flight Test Establishment (International Foundation for Telemetering, 2018-11)
      ARINC429 bus is widely used. In a new type of logic block communication method, the logic layer of the application layer is composed of a plurality of ARINC429 messages, and the message length and content dynamically change. The telemetry monitoring needs real-time analysis of the application layer communication protocol to correctly interpret the user-defined message content. This paper proposes an embedded real-time processing scheme, which integrates real-time processing hardware and software in data acquisition unit. It can dynamic analysis the application layer protocol of the logic block, extract user-defined information according to the telemetry for downloading, the problems encountered in telemetry monitoring of the type of communication are solved. At the same time, this solution is also applicable to real-time analysis of other avionics bus in the application layer protocols.
    • Real-time Processing and Integrated Monitoring Technology for Telemetry Multi-channel Digital Video

      Yang, Zhe; Guo, Pingfan; Huo, Zhaohui; Chinese Flight Test Establishment (International Foundation for Telemetering, 2018-11)
      In flight test telemetry digital video real-time monitoring, some technical problems about single function of the video playback software, needing a dedicated player software (poor extensibility) and lacking the necessary fault diagnosis methods are analyzed.Intelligent playback technology, component video playback plug-in, ground full-link real-time status monitoring and fault diagnosis technology are adopted to realize real-time monitoring telemetry multi-channel digital video under different airborne acquisition systems.Multi-channel video images can be on-demand inserted in any flight test subjects monitoring software.At the same time, it can realize visual real-time status monitoring of the video links of each aircraft.The flight test results show that this technology fully meets the new requirements of the new model test flight for real-time monitoring of video, and greatly improves the quality and efficiency of real-time monitoring of telemetry digital video of the flight test.
    • FAST CLASSIFICATION OF LEAF IMAGES FOR AGRICULTURAL REMOTE SENSING APPLICATIONS

      Gajjar, Viraj; Lai, Ze-Hao; Kosbar, Kurt; Missouri University of Science and Technology (International Foundation for Telemetering, 2018-11)
      This paper introduces a method of classifying leaves using machine learning. Considerable emphasis has been put on leaf classification for use in remote sensing applications such as plant phenotyping and precision agriculture. Convolutional neural networks (CNN) have been extensively used in computer vision for image classification. However, CNN can be computationally expensive. This paper describes a method that achieves a comparable accuracy, with a lower computational burden, using a support vector machine (SVM) classifier. This method uses image processing algorithms to extract features from Hough transform and Hough Lines. These features are then integrated with those extracted from binary images, and “eigenleaves” extracted from grayscale, gradient, and different color-space images of leaves as data preprocessing for classification. The classifier is implemented on two publicly available datasets: Flavia and Swedish; and is able to achieve state-of-the-art accuracies using a SVM classifier.
    • BSS with Heterogeneous Ethernet Sources

      MALIVERNEY, J.; NEXEYA Telemetry Skill Center (International Foundation for Telemetering, 2018-11)
      Nowadays, Telemetry Ground Station over a Range are all connected through Ethernet. Telemetry data can be dispatched from that layer to the Main Control Room. Nevertheless, Ethernet Protocols are so opened that the data transmitted can be heterogeneous (Throughput Ch10, Unpacked /Packed Synchronized data, PCM over Ethernet…). This paper describes an architecture based on a three layers software (Proprietary Layer, Software Frame Sync, and BSS) to manage BSS with these heterogeneous Ethernet sources. The assets (Test Range flexibility, low cost, easy upgrade) & the backwards (Encrypted data mismatch) with practical cases are also described.
    • A PORTABLE SOLUTION FOR ON-SITE ANALYSIS AND VISUALIZATION OF RACE CAR TELEMETRY DATA

      Backhaus, Christopher; Boyer, Kyle; Elmadani, Safwan; Houston, Paul; Ruckle, Sean; Marcellin, Michael; Univ Arizona (International Foundation for Telemetering, 2018-11)
      The University of Arizona Baja Racing Team competes annually in a grueling off-road racing competition designed to test the durability of each team’s vehicle. For the last several years, we have been creating and improving upon a telemetry system for the car in order to provide live data and analysis to the driver and pit crew during races, as well as to inform the design of future vehicles. This year, we have created a portable system consisting of a high-performance computer running a custom software package in a ruggedized case with a variety of networking gear. The software is built around a modular, multithreaded analysis engine and can perform live and retrospective analysis on data received from multiple sources, the results of which can be displayed using the built-in GUI or accessed via web interface.
    • FLIGHT SIMULATION WITH DYNAMIC AERONAUTICAL CHANNEL MODEL

      Alam, Tasmeer; Moazzami, Farzad; Dean, Richard; Morgan State University, Department of Electrical and Computer Engineering (International Foundation for Telemetering, 2018-11)
      This paper includes the design, modeling and analysis of the aeronautical channel which includes the dynamics of flight simulation. For any given flight path scenario in the cruise state it is well understood that the channel is fitted by a 2 ray model. The dynamics of this model can be generated using the two-ray ground reflection model which is based on the position, velocity, and direction of the aircraft. The dynamic aeronautical channel model includes Doppler shift and delay spread for each path of a channel model. This paper shows how each parameter is created for modelling the dynamic channel. The design of such channel model will help the telemetry community to incorporate channel dynamics in computer simulation to improve the accuracy of flight simulation in the design and pre-test stages. Further, it can provide insight to the selection of modulation, equalization and coding for such channels.
    • COMPARISON OF FPGA EQUALIZER IMPLEMENTATIONS FOR HIGH-SPEED DATA TELEMETRY

      Schmalz, Daniel; Lennon, Joseph; Wang, Enkuang; Brothers, Timothy; Georgia Tech Research Institute (International Foundation for Telemetering, 2018-11)
      This paper examines the real-time implementation of equalization techniques. Telemetry RF channels are formidable due to the nature of desert test ranges – specifically due to multipath, changing path loss from environmental effects, and thermal distortions. This challenge is further complicated by the high velocity nature of test assets. Optimization of channel equalization in a real-time scenario is essential for high speed data telemetry over extended distances. This paper examines the mathematical background of equalization techniques and presents results based on FPGA implementations. The results were obtained from Vivado High Level Synthesis (HLS), which generates HDL from C/C++, as well as traditional VHDL coding. The contribution to the state of the art in this paper is the determination of the technological maturity of HLS versus traditional hand coding and the comparison of FPGA implementations of equalization algorithms against current platforms.
    • 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.
    • CODEBOOK BASED TECHNIQUES FOR HIGH-PERFORMANCE GEOLOCATION

      Yang, Andrew; Goldsworthy, Dylan; Nakamura, Drew; Hua, Lee; Univ California Santa Barbara, Department of Electrical and Computer Engineering (International Foundation for Telemetering, 2018-11)
      Conventional geolocation techniques were developed based on time-delay estimation, followed by computation of the angle of arrival (AOA). The AOA computation is the main cause of latency, which significantly degrades the feasibility of real-time bearing-angle detection. The computation also adds to hardware complexity and power consumption, which is critical for small, light-weight and mobile devices. This paper presents a codebook based approach to geolocation. The delay profiles are mapped to a precomputed codebook to match the optimal estimation of the geolocation. This simplifies the computation procedure and makes real-time computing feasible. It utilizes limited memory capacity to reduce latency and hardware complexity. This approach also allows us to accurately assess the resolving capability. In addition, it reduces computation for joint estimation with multiple receiver units, especially in mobile format.
    • PERFORMANCE TEST OF INITIAL iNET-LIKE RF NETWORK USING HELICOPTER (2018)

      Ito, Sei; Honda, Takeshi; Tanaka, Toshihisa; Aoyama, Daiki; Abe, Katsuhiko; Morimatsu, Takafumi; Kawasaki Heavy Industries, Ltd. (International Foundation for Telemetering, 2018-11)
      Kawasaki Heavy Industries, Ltd. (KHI) has been authorized to use S-band IP Transceivers since 2014 in Japan. We have been involved with tests for two-way high-capacity communication. We presented the results of the performance test using a helicopter at ITC2016. We continued further performance test in 2017-2018.
    • COMMON DATA PROCESSING APPLICATIONS ACROSS DECOMMUTATION VENDORS

      Bauer, William; Mann, Phillip; Raytheon Missile Systems (International Foundation for Telemetering, 2018-11)
      Traditional Decom Systems usually require vendor specific data descriptions and provide vendor specific processing capabilities. Using a Software Decom allows the Decom hardware to be setup with a minimal configuration. The added capability of a UDP Multicast over Ethernet for the framed decommutated data allows for common Applications to perform the heavy lifting of Archiving, Real Time Display, and Distributed Processing. Any PC listening on the Local Area Network can access the telemetry data in real-time. This allows common real-time displays, archival tools and data forwarding applications to all run simultaneously.