Weigh-in-Motion (WIM) systems have improved the process of collecting data from heavy vehicles on the U.S. highway system and enforcing the laws that govern vehicle weights. The benefits of WIM are reaped by everyone from highway designers and voernments officials, to truck drivers and transportation industry owners. The data collected by WIM devices is essential for proper pavement design, developing pavement management systems, weight enforcement strategies, modeling traffic improvement projects, and predicting load-related distresses and performance. While WIM offers many advantages over its alternative, static weighing, the technology is limited by problems associated with the accuracy of its measurements. Weigh-in-Motion systems that lack accuracy require vehicles to travel slower and can result in higher queues, longer delays, and potential hazards. For these reasons, WIM system performance must be improved in order to adequately serve its purpose. In order to evaluate WIM system performance and determine what vehicle characteristics have the most affect on it, two systems in the Commonwealth of Virginia were evaluated. The first system was an in-service WIM system at the Troutsville weigh station on I-81. The Troutsville station had bending plate WIM scales located in both the northbound and southbound directions. The second system in a newly developed WIM system manufactured by Omni Weight Corporation (OWC) and was installed at the Virginia Smart Road for evaluation. The OWC scale is a completely sealed and buried system that has ten strain gauge sensors in its interior. Evaluation of both scales was performed by conducting a number of test runs under varying load conditions. Testing at Troutsville was performed using four different test vehicles with multiple loads on each. Variation in load was achieved by loading the test vehicles with various numbers of concrete Jersey Walls. Testing on the OWC scale was performed using only two test vehicles while varying the speed, load, tire pressure, and direction of travel over the scale. The study showed that the scales at the Troutsville weigh station yielded 10% error or less on only 77% of the tests, not complying with the required 95% set forth by ASTM E-1318. In comparison, using the manufacturer's processed data for the OWC scale yielded only 18% of its tests with 10% error or less, far below the ASTM standard. A model was developed to re-calculate the axle weights using the raw sensor data from the OWC scale; and an evaluation of the accuracy of this data showed that the OWC scale performed much better. While compliance with the ASTM standards was still not achieved, it rose from 18% to 71% of the tests having 10% error or less. Repeatability of the Troutsville scales and OWC scales was found to be comparable. / Master of Science

The aim of the thesis is to introduce the concept of the transport terminal in Hranice. The new building brings together bus and train station building services and creates a dignified gateway to the city. The building also serves as a local center of public facilities and local disruption of the barrier formed by the railway within the city.

International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California / 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.

ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California / A traditional Receiver, Modulator, Bit Synchronizer, Frame Synchronizer and Front-End Processor (FEP) with local RAID storage from numerous satellite ground station equipment providers is typically used to satisfy current needs in mission ground stations. The development of Software Defined Radios (SDRs) with reprogrammable personalities has led to the consolidation of these processing elements, and will become the standard for years to follow. CVG-Avtec Systems, Inc. has been a pioneer in the SDR industry, integrating several ground station functions into a one system solution. Its High Data Rate Modem (HDRM) architecture replaces racks of previous generation equipment, providing greater functionality in a smaller footprint. The Field Programmable Gate Array (FPGA) based HDRM is a one system solution that inputs Intermediate Frequency (IF) data and outputs packetized data over IP for data distribution. These new architectures are capitalizing on the revolution in electronics and networking technologies. This paper will discuss the architecture of the HDRM and how it optimizes ground station data processing in a high-rate environment.

International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / A tremendous amount of work has been done recently in the area of Object Oriented Design (OOD) methodology. Most often, texts and papers explaining these methodologies are centered around the explanation of some arcane graphical notation. One is led to believe that the key to understanding Object Orientedness in general will be found by understanding and applying this notation. An understanding of the essence of OOD is difficult to acquire in this manner due to the disproportionate amount of energy required to memorize the graphic symbology. The prospective designer is often left with an understanding of the symbols, but with no understanding of how to apply them to a real world large scale problem. This paper provides an explanation of the Object Oriented paradigm with an example application to telemetry measurements. Next this paper provides an explanation of the most popular graphic notation for Object Oriented Design, the Booch Notation. Finally, this paper shows an alternative graphic notation that can be effectively used in Object Oriented Design during the initial stages of design to help eliminate the learning curve associated with the more popular Object Oriented notations.

International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper will describe the effort to provide a common telemetry system for the Control Center Complex (CCC) which will process data from both the space shuttle and the space station vehicles. It is being developed for the manned spaceflight program at Johnson Space Center. Space shuttle uses a traditional Inter-Range Instrumentation Group (IRIG) telemetry format and Space Station Freedom utilizes the more recently developed Consultative Committee for Space Data Systems (CCSDS) standards for packet-based telemetry Although the two telemetry streams are very different in structure, a front end system is being developed which will isolate the differences and provide a common data format to the downstream elements of the control center. Because of this, a CCC workstation could receive and process data from either space station or space shuttle or both using a identical set of workstation program tools. The generic telemetry front end processor, which is called the Consolidated Communications Facility (CCF), will not only provide a cost effective method of processing space shuttle and space station data, but also will position the CCC to support anticipated requirements of' future programs. The development goals for the CCC are to reduce development and sustaining costs. In the CCF project, commercial-off-the-shelf (COTS) equipment is stressed to allow modular maintenance. In addition, the project has emphasized the development of a automated features in the telemetry stream selection and processing which reduce the amount of operator attention needed. The system has been designed to include robotics in the recording operation and artificial intelligence for detecting faults. This paper will review the concept development for processing telemetry and outline the architecture of the front end CCF project. It will discuss the goals and major influences on the design, and provide a status on the development. Ability of the current COTS marketplace to meet the goals will be discussed. In summation, this paper will describe generic telemetry processing in the context of the CCC being built at Johnson Space Center.

International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The architecture and capabilities of Navy Flight Test’s latest generation telemetry system are described. The Real-time Telemetry Processing System (RTPS) is the name ascribed to successive systems at the Patuxent River Navy Flight Test complex since 1973. This version of the system, dubbed RTPS IV, and the associated facility improvements will enable the Navy to support the next generation military fighter, the Joint Strike Fighter, and every other ongoing and planned Navy test program.

This thesis is concerned with the energy efficiency of cellular networks. It studies the dominant power consumer in future cellular networks, the Long Term Evolution (LTE) radio Base Station (BS), and proposes mechanisms that enhance the BS energy efficiency by reducing its power consumption under target rate constraints. These mechanisms trade spare capacity for power saving. First, the thesis describes how much power individual components of a BS consume and what parameters affect this consumption based on third party experimental data. These individual models are joined into a component power model for an entire BS. The component model is an essential step in analysis but is too complex for many applications. It is therefore abstracted into a much simpler parameterized model to reduce its complexity. The parameterized model is further simplified into an affine model which can be applied in power minimization. Second, Power Control (PC) and Discontinuous Transmission (DTX) are identified as promising power-saving Radio Resource Management (RRM) mechanisms and applied to multi-user downlink transmission. PC reduces the power consumption of the Power Amplifier (PA) and is found to be most effective at high traffic loads. DTX mostly reduces the power consumption of the Baseband (BB) unit while interrupting transmission and is better applied in low traffic loads. Joint optimization of these two techniques is found to enable additional power-saving at medium traffic loads and to be a convex problem which can be solved efficiently. The convex problem is extended to provide a comprehensive power-saving Orthogonal Frequency Division Multiple Access (OFDMA) frame resource scheduler. The proposed scheduler is shown to reduce power consumption by 25-40% in computer simulations, depending on the traffic load. Finally, the thesis investigates the influence of interference on power consumption in a network of multiple power-saving BSs. It discusses three popular alternative distributed uncoordinated methods which align DTX mode between neighbouring BSs. To address drawbacks of these three, a fourth memory-based DTX alignment method is proposed. It decreases power consumption by up to 40% and retransmission probability by around 20%, depending on the traffic load.

International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Expert systems can be of great benefit to analysts, mission controllers, and flight safety officers who must make real-time decisions based upon a myriad of quickly changing parameters. Operators may require extensive training to view a limited parameter set or they can be aided by computers systematically monitoring many parameters. But, even today’s powerful general purpose computers and workstations are limited in their capabilities to monitor (i.e., process) the desired number of parameters. Thus, applications are distributed across multiple platforms. A telemetry ground station front end system (i.e., a real-time data server) that distributes preprocessed data to multiple knowledge stations over standard communications networks is presented.

International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California / In this paper, a PCM telemetry system based on Personal computer is presented and some important methods that are used to realize the system will be introduced, such as a new kind of all digital PLL bit synchronizer and a way to solve the problem of high-rate data storage. The main idea of ours is to make the basic parts of PCM telemetry system (except receiver) in the form of PC cards compatible with EISA Bus, which forms a telemetry station with resource of PC computer. Finally, a laboratory prototype with rate up to 3.2Mbps is built.