ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada / The use of Ethernet and Internet Protocol (IP) networking technologies in flight test instrumentation and telemetry systems is rapidly increasing, driven by the ubiquity, scalability, and flexibility of networking technologies. Networks first made a positive impact in ground station infrastructure and have recently been emerging in test article data acquisition infrastructure in programs such as the A380, 787, P-8A, and Future Combat Systems. The next logical step is to provide a two-way network telemetry link to fully extend the flexibility of the network between the test articles and ground station. The United States Department of Defense (DoD) integrated Network-Enhanced Telemetry (iNET) program is currently working to build a standardized network telemetry link for exactly this purpose. When developing a network telemetry link, the limited availability of telemetry spectrum must be considered and thus it is critical to choose system-level approaches to maximize the throughput achieved from the link. This paper first presents the statistics of the network data that would typically use this link based on empirical data from current network-based flight test instrumentation systems. Several approaches to using a network telemetry link are then presented. Predicted achievable throughputs of each approach are presented that are derived from the statistics of the empirical test data. Based on this, the paper presents recommendations for building systems using network telemetry links.

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 / White Sands Missile Range is the largest overland test range in North America occupying over 3,200 square miles in Southern New Mexico and nearby territory. One of the most critical test elements at White Sand Missile Range is it's capabilities in the telemetry field. Much significant advancement in technology has given WSMR and the entire electronics world the ability to achieve new levels of data acquisition that were not achievable a decade ago. And as attention to our nation's defense is of high priority, White Sands Missile Range provides to highest levels of telemetry competence in the Western Hemisphere.

ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Ubiquitous internet protocol (IP) hardware has reached performance and capability levels that allow its use in data collection and real-time processing applications. Recent development experience with IP-based airborne data acquisition systems has shown that the open, pre-existing IP tools, standards, and capabilities support this form of distribution and sharing of data quite nicely, especially when combined with IP multicast. Unfortunately, the packet based nature of our approach also posed some problems that required special handling to achieve performance requirements. We have developed methods and algorithms for the filtering, selecting, and retiming problems associated with packet-based systems and present our approach in this paper.

International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Western Aeronautical Test Range (WATR) operates the ground stations for research vehicles operating at the NASA Dryden Flight Research Center (DFRC). Recently, the WATR implemented a new system for distributing Time, Space, and Position Information (TSPI) data. The previous system for processing this data was built on archaic hardware that is no longer supported, running legacy software with no upgrade path. The purpose of the Radar Information Processing System (RIPS) is to provide the ability to acquire TSPI data from a variety of sources and process the data for subsequent distribution to other destinations located at the various DFRC facilities. RIPS is built of commercial, off the shelf (COTS) hardware installed in Personal Computers (PC). Data is transported between these computers on a Gigabit Ethernet network. The software was developed using C++ with a modular, object-oriented design approach.

ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / Through the use of early iNET-prototype IP Transceiver technology, Kawasaki Heavy Industries, Ltd. (KHI) has been able to communicate with flight test vehicles during a recent research program. This technology provides a two-way high-capacity communication that has not been achieved with conventional telemetry and can be used not only for flight testing, but also for rescue work. KHI has been authorized to use S-band IP Transceivers since last year in Japan, and various communication tests have been performed. This paper describes Japan's first simulation of an iNET RF network which incorporated testing that performed data backfill, voice communication and video transmission. A data backfilling test was performed using retransmit of lock-off data (which is lost as the aircraft maneuvers) on command from the ground station. Moreover, a tethered aerostat is considered a very useful communication relay platform in the event of a large-scale disaster which results in the destruction of infrastructure. Also, the silence of an aerostat can be very important for search and rescue work.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / The increasing of space explorations requires space communication protocols to provide more capabilities, such as dynamic routing, adaptive data transformation and automatic resource allocation. Accordingly, a universal space communication protocol stack should be provided instead of specially designing protocol for given space mission. Considering the requirements and characters of space mission, potential protocols of all layers were compared and analyzed. Simulations were made based on OPNET. And a suggestion for space communication protocol stacks is proposed.

The thesis report provides broader information about IP and MPLS technologies and routing protocols. Internet architecture and problems in an IP networks are illustrated when different internet protocols are used. Small focus is provides on the demand oriented real time applications and data traffic for QoS parameters in IP and MPLS networks. Evaluation of QoS guarantee parameters such as delay, jitter and throughput are described with state of art study results mainly for real time applications in IP and MPLS networks. Finally MPLS TE implementation and working is described and proposed to achieve better network performance.

<p>Much effort today in the Internet research community isaimed at providing network services for applications that werenot under consideration when the Internet was originallydesigned. Nowadays the network has to support real-timecommunication services that allow clients to transportinformation with expectations on network performance in termsof loss rate, maximum end-to-end delay, and maximum delayjitter. Today there exist two quality of service (QoS)architecture for the Internet: The integrated services, whichis usually referred to as intserv, and the differentiatedservices referred to as diffserv. Although the intserv clearlydefines the quality levels for each of its three serviceclasses, the limited scalability of this QoS architecture is acontinuous topic for discussion among the researchers. Theanalysis of the tradeoffs of the two QoS architecturesmotivated us to design a new QoS architecture which will takethe strength of the existing approaches and will combine themin a simpler, efficient and more scalable manner.</p><p>In this LicentiateThesis we introduce a guaranteed servicefor the Internet, which definition is similar to the one inintserv: The guaranteed service (GS) is a network servicerecommended for applications with firm requirements on qualityof end-to-end communication. The service should provide zeropacket loss in routers and tightly bound the end-to-end delay.The capacity for a GS connection should be explicitly reservedin every router along a path of a connection. However, incontrary to intserv the necessary quality level will beprovided without per-flow scheduling in the core routers, whichis the major drawback of the intserv architecture. We use thediffserv principle of dealing with aggregates in the corenetwork since this approach is proven to be scalable andefficient.</p><p>The thesis considers two major building blocks of the newarchitecture: The packet scheduling and the signaling protocol.We have developed a special scheduling algorithm. Our formaland experimental analysis of its delay properties shows thatthe maximum end-to-end delay is acceptable for real-timecommunication. Moreover, our scheme provides a fair service tothe traffic of other service classes. In order to achieve thedesired QoS level, a sufficient amount of capacity should bereserved for the GS connections in all intermediate routersend-to-end. We have developed a both simple and robustsignaling protocol. The realization of our protocol shows thatrouters are able to process up to 700,000 signaling messagesper second without overloading the processor.</p>

El presente estudio tiene como objetivo fundamental el desarrollo de mezclas de concreto (hormigón) más el uso del aditivo superplastificante de última generación SIKA VISCOCRETE 20 HE, basado en mezclas con bajos contenidos de cemento Pórtland Puzolánico Tipo IP “Atlas” (375 Kg, 350 Kg, 325 Kg, 300 Kg, 275 Kg), que logren alcanzar altas resistencias iniciales y con características fluidas. El desarrollo de este tipo de concreto (hormigón) es de suma importancia, ya que con los nuevos avances tecnológicos se aspira a incrementar la libertad del diseño, aumentar la productividad y la rentabilidad. Asimismo, nos permitirá resolver problemas constructivos tomando en cuenta que existen muchas preocupaciones respecto a la manejabilidad, homogeneidad y consolidación del concreto (hormigón), y su puesta en obra dentro de estructuras densamente reforzadas. Previamente antes del desarrollo de las mezclas de concreto (hormigón) se realizó el control de calidad de los materiales que intervienen en su fabricación mediante pruebas y ensayos de laboratorio, en conformidad con los procedimientos establecidos en las normas NTP y ASTM respectivamente. Primero se estudia la materia prima, y se le realizan las siguientes pruebas: Inspección visual: se trata de seleccionar el material para ser llevado al laboratorio y realizarle las pruebas que asegurarán su aprobación; Cuarteo: este proceso se refiere a la reducción del material que se tiene para probar a una cantidad pequeña establecida por la norma NTP 400.010 (ASTM C702); Humedad: el porcentaje del contenido de agua en los agregados, especialmente en la arena, es un dato de gran importancia en el desarrollo de una mezcla; Peso Unitario: es el peso por metro cúbico, se calcula para las condiciones suelta y compacta; Granulometría: el análisis granulométrico de los agregados se realiza con una serie de tamices graduados en forma progresivamente menor, así se determinan los diferentes tamaños de las partículas. Dentro de este ensayo se encuentra una prueba para el material más fino denominado Malla N° 200, especificado en la norma NTP 400.018 (ASTM C-117). Los aditivos que se utilizaron en las mezclas de concreto (hormigón) son los siguientes:SIKA VISCOCRETE 20HE: aditivo reductor de agua de alto rango, produce mezclas más fluidas reduciendo hasta un 40% del agua de diseño; SIKA PLASTIMENT TM 12: aditivoplastificante y retardante; SIKASTABILIZER 100: aditivo estabilizador desarrollado para producir concretos (hormigones) de mejor viscosidad evitando problemas de segregación y sangrado; SIKA FUME: adición mineral que es humo de sílice, utilizado para obtener concretos (hormigones) de alta resistencia, en la investigación se utilizó menos del rango prescrito ya que su función fue la de un cohesionante. Luego, de desarrollar todas las pruebas anteriores a los agregados, se procede a su aprobación y se utilizan en conjunto para realizar las mezclas de concreto (hormigón). Para realizar las pruebas de las mezclas de concreto (hormigón) se partió de los datos del fabricante de aditivos, de donde se determinó un rango de la cantidad de agua a reducir y la cantidad de aditivo a utilizar, a partir de un diseño establecido se probó la influencia del aditivo superplastificante, dándole seguimiento hasta obtener los diseños finales. El proceso de mezclado de los materiales se realizó con una mezcladora de 40 litros de capacidad. Se inicia vaciando el agregado grueso, luego el agregado fino, el cemento más la adición SIKA FUME y los aditivos en el siguiente orden: S.VISCOCRETE 20HE, S.STABILIZER 100 y S.PLASTIMENT TM-12. Se sigue mezclando hasta un aproximado de 3 minutos entre un aditivo y otro. Una vez culminado el proceso de mezclado se procedió a realizar las pruebas alconcreto (hormigón). Brevemente las pruebas que se realizaron fueron las siguientes: Fluidez del asentamiento: en esta prueba se midió la extensibilidad diferente al revenimiento, establecida en la norma NTP 339.035 (ASTM C 143). Lo que se mide en esta prueba es la extensibilidad del concreto (hormigón) a través de una superficie lisa y no absorbente, donde el diámetro promedio debe estar entre 45 y 50 cm. Probetas: se confeccionaron las probetas cilíndricas de muestra en moldes de plástico no absorbentes. Seguidamente, se dejan reposar durante 24 horas sin interrupción alguna. Tiempo de fraguado: en esta prueba se determina el tiempo de fraguado en el concreto (hormigón) por resistencia a la penetración, de acuerdo con la norma NTP 339.082(ASTM C403), donde se utilizó un penetrómetro para realizar varios intentos de esfuerzo en el concreto (hormigón). El concreto (hormigón) se tamizó en la malla No.4 y se le realizaron las perforaciones al mortero. Los datos obtenidos se grafican en una hoja de Excel. Resistencia a la compresión: cada probeta cilíndrica que se elaboró, fue ensayada en los días establecidos, las probetas de concreto (hormigón) se ensayaron según la norma NTP 339.034(ASTM C 39). Resistencia a la flexión: cada probeta prismática de dimensiones 15x15x50 cm, se ensayó en la máquina a flexión, donde los apoyos son a cada tercio según la norma ASTM C 78. Los resultados mostraron valores favorables y mejor desempeño para el concreto (hormigón) con contenidos de cemento mayores a los 325 kg/m3 tanto en los resultados de los ensayos en el concreto (hormigón) fresco como endurecido, mientras que en los concretos (hormigones) con 300 y 275 kg/m3 tuvieron que necesitar mayor cantidad de agua para llegar a su performance, lo cual dificultóel éxito de las resistencias iniciales altas. Todos los diseños lograron obtener mezclas fluidas con un slump 10” y un diámetro de 50cm, obteniendo mantener la trabajabilidad en el tiempo sin afectar los tiempos de fraguado. Asimismo, se logró cumplir los objetivos planteados para desarrollar concretos (hormigones) de alta fluidez con bajos contenidos de cemento, obteniendo altas resistencias iniciales. Demostrándose así la eficiencia de los aditivos de última generación. Se hace posible que en la industria de la construcción se pueda utilizar un concreto (hormigón) de elevada fluidez sin llegar a los parámetros de un concreto (hormigón) autocompactado, que nos dé las mismas prestaciones, y que pueda ser evaluado con los parámetros de un concreto (hormigón) convencional, logrando reducir tiempos en la puesta en obra como en el desencofrado de las estructuras, con efectos de minimizar costos a largo plazo.

Context. Test Automation is a technique followed by the present software development industries to reduce the time and effort invested for manual testing. The process of automating the existing manual tests has now gained popularity in the Telecommunications industry as well. The Telecom industries are looking for ways to improve their existing test methods with automation and express the benefit of introducing test automation. At the same time, the existing methods of testing for throughput calculation in industries involve measurements on a larger timescale, like one second. The possibility to measure the throughput of network elements like routers on smaller timescales gives a better understanding about the forwarding capabilities, resource sharing and traffic isolation in these network devices. Objectives. In this research, we develop a framework for automatically evaluating the performance of routers on multiple timescales, one second, one millisecond and less. The benefit of introducing test automation is expressed in terms of Return on Investment, by comparing the benefit of manual and automated testing. The performance of a physical router, in terms of throughput is measured for varying frame sizes and at multiple timescales. Methods. The method followed for expressing the benefit of test automation is quantitative. At the same time, the methodology followed for evaluating the throughput of a router on multiple timescales is experimental and quantitative, using passive measurements. A framework is developed for automatically conducting the given test, which enables the user to test the performance of network devices with minimum user intervention and with improved accuracy. Results. The results of this thesis work include the benefit of test automation, in terms of Return on Investment when compared to manual testing; followed by the performance of router on multiple timescales. The results indicate that test automation can improve the existing manual testing methods by introducing greater accuracy in testing. The throughput results indicate that the performance of a physical router varies on multiple timescales, like one second and one millisecond. The throughput of the router is evaluated for varying frame sizes. It is observed that the difference in the coefficient of variance at the egress and ingress of the router is more for smaller frame sizes, when compared to larger frame sizes. Also, the difference is more on smaller timescales when compared to larger timescales. Conclusions. This thesis work concludes that the developed test automation framework can be used and extended for automating several test cases at the network layer. The automation framework reduces the execution time and introduces accuracy when compared to manual testing. The benefit of test automation is expressed in terms of Return on Investment. The throughput results are in line with the hypothesis that the performance of a physical router varies on multiple timescales. The performance, in terms of throughput, is expressed using a previously suggested performance metric. It is observed that there is a greater difference in the Coefficient of Variance values (at the egress and ingress of a router) on smaller timescales when compared to larger timescales. This difference is more for smaller frame sizes when compared with larger frame sizes.