• Verification, Validation and Completeness Support for Metadata Traceability

      Darr, Timothy; Fernandes, Ronald; Hamilton, John; Jones, Charles; Knowledge Based Systems, Inc.; Edwards Air Force Base (International Foundation for Telemetering, 2010-10)
      The complexity of modern test and evaluation (T&E) processes has resulted in an explosion of the quantity and diversity of metadata used to describe end-to-end T&E processes. Ideally, it would be possible to integrate metadata in such a way that disparate systems can seamlessly access the metadata and easily interoperate with other systems. Unfortunately, there are several barriers to achieving this goal: metadata is often designed for use with specific tools or specific purposes; metadata exists in a variety of formats (legacy, non-legacy, structured and unstructured metadata); and the same information is represented in multiple ways across different metadata formats.
    • A VHDL Implementation of the Soft Output Viterbi Algorithm

      Perrins, Erik; Werling, Brett W.; University of Kansas (International Foundation for Telemetering, 2010-10)
      In this paper we present a VHDL implementation of the soft output Viterbi algorithm (SOVA). We discuss the usefulness of the SOVA in a serially concatenated convolutional code (SCCC) system. We explore various hardware design decisions along with their implications. Finally, we compare the simulated performance of the hardware implementation to a software reference model over an additive white Gaussian noise (AWGN) channel for several bit widths and traceback window lengths.
    • Visually Lossless Compression Based on JPEG2000 for Efficient Transmission of High Resolution Color Aerial Images

      Marcellin, Michael W.; Bilgin, Ali; Oh, Han; University of Arizona (International Foundation for Telemetering, 2010-10)
      Aerial image collections have experienced exponential growth in size in recent years. These high resolution images are often viewed at a variety of scales. When an image is displayed at reduced scale, maximum quantization step sizes for visually lossless quality become larger. However, previous visually lossless coding algorithms quantize the image with a single set of quantization step sizes, optimized for display at the full resolution level. This implies that if the image is rendered at reduced resolution, there are significant amounts of extraneous information in the codestream. Thus, in this paper, we propose a method which effectively incorporates multiple quantization step sizes, for various display resolutions, into the JPEG2000 framework. If images are browsed from a remote location, this method can significantly reduce bandwidth usage by only transmitting the portion of the codestream required for visually lossless reconstruction at the desired resolution. Experimental results for high resolution color aerial images are presented.
    • Web Service Applications in Future T&E Scenarios

      Sulewski, Joe; Hamilton, John; Darr, Timothy; Fernandes, Ronald; L-3 Telemetry East; Knowledge Based Systems, Inc. (International Foundation for Telemetering, 2010-10)
      In this paper, we discuss ways in which web services can be used in future T&E scenarios, from the initial hardware setup to making dynamic configuration changes and data requests. We offer a comparison of this approach to other standards such as SNMP, FTP, and RTSP, describing the pros and cons of each as well as how these standards can be used together for certain applications.
    • A Wideband Stacked Microstrip Patch Antenna for Telemetry Applications

      Nithianandam, Jeyasingh; Hategekimana, Bayezi; Morgan State University (International Foundation for Telemetering, 2010-10)
      This research article reports a design of a wide band multilayer microstrip patch antenna (MSPA). Positions of a coaxial probe feed to main patch of the multilayer MSPA, widths and lengths of main and parasitic patches, and height of a Rohacell foam layer in the multilayer MSPA were optimized to achieve desired performance in L-band. The work also reports a design of a two-by-two array of multilayer MSPA. We present results on antenna radiation patterns and return loss obtained with full wave finite element simulations with Ansoft HFSS software and measurements with a vector network analyzer.
    • Wireless Power Transmission Using Microwave Technology

      Xin, Hao; Marcellin, Michael; Fuller, Robert; Nastase, Ryan; Elliott, Kaoru; Salhab, Anas; Campbell, Jonathan; University of Arizona (International Foundation for Telemetering, 2010-10)
      As part of the Senior Capstone class held at the University of Arizona in the College of Engineering, the team was tasked to build a prototype that could power a simple electronic device wirelessly. The team succeeded in doing so and has proven that wireless power transmission could be a valuable tool for future use. There are a few difficulties to note and specifics will be given in the body of the report.
    • Wireless Tire Temperature Sensor Patch and System for Aircraft Landing Gear Testing

      Sulcs, Peter; Palmer, Carl; Naber, John; Jackson, Doug; Fuller, Lynn; Jones, Charles H.; Impact Technologies LLC; University of Louisville; Rochester Institute of Technology; Edwards Air Force Base (International Foundation for Telemetering, 2010-10)
      Testing aircraft brake and tire systems often results in tire temperatures that makes the aircraft unsafe to approach (due to explosion risk) for up to 45 minutes; this complicates cost effective test execution. This paper describes work on a wireless sensor system that measures multiple tire temperatures and transmits the data to someone at a safe distance (>300 ft). The solution consists of a sensor patch adhered directly to the tire which measures the tire temperature. The patch transmits these measurements to off-tire reader/relay nodes that subsequently sends the data to a system controller and display device.
    • X-Tools: A Case Study in Building World Class Software

      Cooke, Alan; ACRA Control (International Foundation for Telemetering, 2010-10)
      X-Tools is a collection of utilities for validation, translation, editing and report generation designed to enable the Flight Test Instrumentation (FTI) community to quickly adopt the XidML 3.0 meta-data standard. This paper discusses the challenges of developing such software that meets the current and future needs of the FTI community, and meets the increasingly high quality standards expected of modern software. The paper first starts by discussing the needs of the FTI community and the specific functional requirements of software. These include the ability to fit in with legacy systems, the ability to handle many tens of thousands of parameters, support for new networked-based technologies and support for hardware from any vendor. The non-functional requirements of FTI orientated software are also described and it is suggested that the key non-functional requirements include testability, modifiability, extensibility and maintainability. Finally, as a case study, the X-Tools from ACRA CONTROL are presented. The paper discusses their design, and the tactics used to meet the functional and non-functional requirements of the FTI industry. The paper then outlines how the rigorous quality standards were met and describes the specific mechanisms used to verify the quality of the software.