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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Current Status of Adding GPS Tracking Capability to a Missile Telemetry Section

Kujiroaoka, Scott R., Fielder, Russell G., Sandberg, Alvia D. 10 1900 (has 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 / Past presented papers have discussed the integration efforts of incorporating Central Test & Evaluation Investment Program (CTEIP) sponsored Joint Advanced Missile Instrumentation (JAMI) components (namely the JAMI TSPI Unit-JTU), Commercial off the Shelf (COTS) parts (e.g. ARTM Tier I SO-QPSK Transmitter, Encryptor and Thermal Battery), and in-house developed devices (such as PCM Encoder and Dual Band Antenna) into a five-inch diameter Missile Telemetry (TM) Section. A prototype of this TM Section has been built up and integrated into an All Up Round (AUR) Missile and twice flown as a Captive Carried Test Missile (CTM) on an F/A-18 jet with great success. This TM Section is in the process of undergoing flight qualification testing (including environmental and electro-magnetic interference-EMI tests). After which it will be ready for mass production. This paper will detail these current efforts. In addition, the effort to upgrade some Navy and Air Force Test Ranges (with JAMI Ground Stations and Decommutators/Demodulators) to track and gather data from this Missile containing the new TM section will be discussed. Future plans to incorporate Flight Termination System (FTS) capabilities into the TM section will be covered as well.
12

The Development of a Flight Test Real Time GPS Navigation Tool (GNAV)

Leite, Nelson Paiva Oliveira, Rocha, Israel Cordeiro, Walter, Fernando, Hemerly, Elder Moreira 10 1900 (has 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 / The real time acquisition and monitoring of the aircraft trajectory parameters is essential for the safety of the flight tests campaigns held by most of the tests centers. Nowadays the us age of an airborne GPS receiver as the main sensor for these parameters has become the preferred solution for the Flight Tests Instrumentation (FTI) systems. The main problem arises when it is required a high accuracy for these measurements (e.g. air data calibration) where the solution is achieved through differential GPS techniques. The integration of this solution requires the acquisition and the correlation of the pseudorange and phase measurements for all GPS satellites in view observed by both base and rover GPS receivers. To avoid the usage of an additional uplink for the GPS differential corrections (i.e. from the base receiver to the rover), it was developed a novel solution where the GPS observables acquired by the rover receiver are merged into the FTI PCM data stream and processed in the Telemetry ground station by a Real Time GPS Navigation (GNAV) tool together with the GPS observables acquired by the base receiver. The GNAV development is divided into several phases where the accuracy for the trajectory parameters and the complexity of the solution increases. The prototype system was built and evaluated against the post-mission Ashtech PNAV® tool and the initial tests results show a satisfactory performance for the GNAV. The tests profiles are fully compliant with the Federal Aviation Administration (FAA) Advisory Circular (AC) 25-7A.
13

GPS Receiver Testing on the Supersonic Naval Ordnance Research Track (SNORT)

Meyer, Steven J. 10 1900 (has links)
International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada / There is an interest in using Global Positioning System (GPS) receivers to find: Time Space Position Information (TSPI), miss distances between a missile and target, and using the data real time as an independent tracking aid for range safety. Ashtech, Inc. has several standalone GPS receivers they believe can work at high g levels. This paper investigates how the Ashtech GPS receivers work under high g loading in one axis. The telemetry system used to collect data from the receivers and the reconstruction of the data will also be discussed. The test was done at SNORT (Supersonic Naval Ordnance Research Track) located at NAWS, China Lake, CA. The g level obtained was about +23 g’s with a deceleration of -15 g’s. The velocity reached was about Mach 2.0. A summary of the errors is included.
14

NAVSTAR-GLOBAL POSITIONING SYSTEM (GPS) FOR RANGE APPLICATIONS

HANCOCK, THOMAS P 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1985 / Riviera Hotel, Las Vegas, Nevada / The purpose of this paper is to describe the Tri-Service effort to use the NAVSTAR Global Positioning System (GPS) on Tri-Service ranges. It will describe the background, the development program, the equipment, the management team, the specifications that the equipment must satisfy, the integration into five DOD ranges, an assessment of developmental risk, a recap of logistical aspects, and will provide a development schedule.
15

Distributed Interactive Simulation: The Answer to Interoperable Test and Training Instrumentation

Kassan, Mark W. 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / This paper discusses Global Positioning System (GPS) Range Applications Joint Program Office (RAJPO) efforts to foster interoperability between airborne instrumentation, virtual simulators, and constructive simulations using Distributed Interactive Simulation (DIS). In the past, the testing and training communities developed separate airborne instrumentation systems primarily because available technology couldn't encompass both communities' requirements. As budgets get smaller, as requirements merge, and as technology advances, the separate systems can be used interoperably and possibly merged to meet common requirements. Using DIS to bridge the gap between the RAJPO test instrumentation system and the Air Combat Maneuvering Instrumentation (ACMI) training systems provides a defacto system-level interoperable interface while giving both communities the added benefits of interaction with the modeling and simulation world. The RAJPO leads the test community in using DIS. RAJPO instrumentation has already supported training exercises such as Roving Sands 95, Warfighter 95, and Combat Synthetic Test, Training, and Assessment Range (STTAR) and major tests such as the Joint Advanced Distributed Simulation (JADS) Joint Test and Evaluation (JT&E) program. Future efforts may include support of Warrior Flag 97 and upgrading the Nellis No-Drop Bomb Scoring Ranges. These exercises, combining the use of DIS and RAJPO instrumentation to date, demonstrate how a single airborne system can be used successfully to support both test and training requirements. The Air Combat Training System (ACTS) Program plans to build interoperability through DIS into existing and future ACMI systems. The RAJPO is committed to fostering interoperable airborne instrumentation systems as well as interfaces to virtual and constructive systems in the modeling and simulation world. This interoperability will provide a highly realistic combat training and test synthetic environment enhancing the military's ability to train its warfighters and test its advanced weapon systems.
16

Innovative methodology for location-based scheduling and visualisation of earthworks in road construction projects

Shah, Raj K. January 2011 (has links)
This thesis focuses on the development of an innovative location-based scheduling methodology and a computer-based model for improving earthwork operations in road construction projects. Analysis of existing planning and scheduling practices in road construction projects conducted in the course of this research concluded that planning, scheduling and resource allocation are largely dependent on subjective decisions. Also, shortcomings exist due to the distinct characteristics of earthworks, e.g. one-off projects with uncertain site conditions and soil characteristics, causing delays and cost overruns of projects. The literature review found that existing linear scheduling methods provide inaccurate location-based information about earthworks and fail to integrate different productivity rates. A survey was used to capture and analyse industrial practices and issues related to delays and cost overruns. This analysis revealed that the accurate location-based information is vital for efficient resource planning and progress monitoring. Following these findings, a theoretical framework and specification were developed to automate location-based scheduling and visualisation of information. A prototype model was developed by integrating road design data, sectional quantities, productivity rates, unit cost, site access points, and arithmetic algorithms. The algorithms underpinning the model enable the generation of time-location plans automatically as a key output of the model. Weekly progress profiles, space congestion plans, and cost S-curves are the other outputs. A cut-fill algorithm was developed to identify optimum quantities of earthwork and its associated costs. Experiments were conducted with design data provided by a road construction company to demonstrate the model‟s functionality. Sensitivity analysis was used to identify the critical factors relating to earthwork scheduling. It was found that the model is capable of generating time-location plans, considering the critical factors and location aspects. Finally, the model was evaluated using a case study and validated by road construction professionals using an indirect comparison method. It was concluded that the model is a valuable tool for producing location-based scheduling, optimising resource planning and assisting in the communication of scheduling information from the location viewpoints in the earthwork projects.
17

Mechanism, impact and policy of tourism-recreation mobility : study based on cities in Europe and China / Le mécanisme, l'impact et la politique du la mobilité tourisme-loisirs : l'étude basée sur les villes en Europe et en Chine

Zhao, Shouliang 30 November 2012 (has links)
Dans un contexte de compréhension du temps-espace, l'environnement habituel, celui qui est la conception clef dans la définition traditionnelle du tourisme, est très difficile à être défini. Néanmoins, les activités de tourisme et des loisirs dans le milieu urbain ont de relations proches, dans les deux aspects : celui de la demande et celui de l'offre. Par conséquent, dans une étude empirique, bien comme dans le cadre d'élaboration de politiques, il y a de nécessités d'intégration du tourisme et de l'étude du loisir dans un contexte urbain. La thèse essaie de construire un cadre conceptuel appelé de “la mobilité tourisme-loisir” basé sur la ville, ancré sur la discrimination de concepts dans les études de tourisme et des loisirs. Cette étude veut offrir quelques suggestions pour les villes chinoises en ayant comme référence l'expérience des pays européens. Trois questions seront discutées : quel est le mécanisme de la mobilité tourisme-loisir ? Quelles sortes d'impact peuvent avoir la mobilité tourisme-loisir sur la ville ? Et quelle réaction la ville devrait pendre en compte ? Le mécanisme de la mobilité tourisme-loisir est discuté en quatre aspects : de la demande, de l'offre, du modèle d'espace et des tendances de développement. La thèse conclue que la demande en mobilité tourisme-loisir va vite grandir en Chine. Les acteurs des voyages tourisme-loisir diffèrent sensiblement par trajet, ce qui devrait être la base des plans de transport touristique. En général, les villes chinoises devraient beau faire pour l'optimisation de l'offre des ressources du tourisme-loisir. La thèse analyse le modèle d'espace de la mobilité tourisme-loisir dans les niveaux de la région et de la ville. Les tendances de la mobilité tourisme-loisir dans une compréhension du contexte temps et espace ont été également étudiées. Le développement de la mobilité tourisme-loisir a un impact évident sur le milieu physique des villes. Le développement cause aussi une compétition intensive entre les villes d'une région de taille plus importante, ce qui fait croître des nouvelles demandes pour les villes. Pour remplir la demande des résidents locaux et des visiteurs, l'aménagement urbain devrait consacrer l'optimisation de la structure fonctionnelle urbaine, des espaces publics urbains, et du réseau de transport urbain. La promotion politique a incité le succès du tourisme urbain au sein des pays européens. Pourtant, plusieurs villes ont renforcé les politiques de régulation lorsque le tourisme a été développé à un certain niveau. Quelques politiques communes dans les villes européennes sont essentielles pour la prospérité du tourisme et du développement du loisir dans les villes chinoises. Pour faire face aux défis posés par le développement de la mobilité tourisme-loisir, la thèse présente quelques suggestions pour les villes chinoises, à partir de quatre aspects appelés de recherche en tourisme-loisir, la coordination du tourisme urbain et des institutions d'aménagement urbain, la politique urbaine et la formulation de la planification urbaine. Puisque la ville est de plus en plus partagée par les visiteurs et par les résidents locaux, l'aménagement urbain traditionnel devrait être ajusté, ce qui sert plutôt aux locaux. L'aménagement urbain devrait faire une ville favorable aux résidants et également aux visiteurs, de la politique de l'usage du sol aux services publics. En attendant, l'aménagement urbain devrait travailler pour construire une ville plus attractive / In a time-space compression background, the usual environment, which is the key conception in traditional tourism definition, is much difficult to be defined. Meanwhile, the tourism and recreation activities in urban background have close relations, in both aspects of demand and supply. Therefore, in empirical study as well as in policy-making, there are necessities of integration of tourism and recreation study in the urban background. The dissertation tries to construct a conceptual framework called tourism-recreation mobility based on city, on the basis of discrimination of conceptions in tourism and recreation study. Meanwhile, this study wants to offer some suggestions for Chinese cities by referring to experience of European countries. There are three problems discussed: What is the mechanism of tourism-recreation mobility? What kinds of the impacts of tourism-recreation mobility on city? What should city do? The mechanism of tourism-recreation mobility is discussed from four aspects: demand, supply, and space pattern and development trends. The dissertation concludes that the demand of tourism-recreation mobility will increase fast in China. The characters of tourism/recreation trip differ substantially from commuting, which should be the basis of tourism transportation plan. Generally speaking, Chinese cities should devote much to the optimization of tourism-recreation resources supply. The dissertation analyzes the space pattern of tourism-recreation mobility from region and city levels. The trends of tourism-recreation mobility in time-space compression background have also been studied. The development of tourism-recreation mobility has obvious impact on physical environment of cities. The development also causes intensive competition between cities in a larger area, which rises new demand for cities. To fulfill the demand of both residents and visitors, urban planning should devote to the optimization of urban functional structure, urban public space and urban transportation system. Promotion policy induced the prosperity of urban tourism in European countries. On the other hand, many cities rise regulation policy when tourism developing to a certain stage. Some common policies in European cities are essential for the general prosperity of tourism and fine quality of resident's recreation, which could be reference for urban tourism and recreation development in Chinese cities. To face the challenges raised by the development of tourism-recreation mobility, the dissertation submits several suggestions for Chinese cities, from four aspects named as tourism-recreation research, coordination of urban tourism and urban planning institutions, urban policy and urban planning formulation. Since the city is more and more shared by visitors and residents, the traditional urban planning should be adjusted, which serves mainly for the residents. Urban planning should make city more favorable for both residents and visitors, from land-use to facilities. Meanwhile, urban planning should devote to build a more attractive city
18

Cultura alimentar : cartografias rurais em tempos de aceleração

Althaus, Eduardo Cristiano January 2018 (has links)
Fundamentada na afirmativa de Mássimo Montanari, de comida como cultura, esta dissertação pretende acompanhar através de uma cartografia rural, as transformações das paisagens culturais alimentares na cidade de Tio Hugo/RS e seu entorno. O trabalho é apresentado em dois tempos, o primeiro deles sob a metáfora de um mise-en-place, onde são pré-preparados os conceitos fundantes da pesquisa, bem como as estratégias utilizadas em seu modo de preparo. O segundo tempo é composto pela incursão no território pesquisado, pelas narrativas de mulheres colonas e suas famílias e, também, pela apresentação das análises empreendidas pelo cartógrafo, dentro do que se circunscreve como campo dos Estudos Culturais em Educação. A ênfase desse estudo está direcionada para algumas transformações culturais das técnicas utilizadas nas preparações de alimentos, em seus modos de preparo, nas escolhas dos ingredientes, do tempo destinado ao fazer culinário, dos saberes transmitidos, dos processos de urbanização e industrialização do meio rural. O eixo do trabalho são os deslocamentos espaço-temporais e as vicissitudes da cultura. O desfecho da pesquisa busca problematizar, a partir desses eixos, como vem se produzindo uma percepção acelerada do tempo, correlacionada a alguns aspectos como o uso de tecnologias, ao fenômeno da globalização, das relações entre produção-consumo, do terreno que emerge como gastronomia, da memória e da invenção das tradições. / Based on Massimo Montanari's view of food as culture this thesis aims to follow through a rural cartography the changes of food culturallandscapes in the city of Tio Hugo/RS and its surroundings. This dissertation is presented in two stages, the first of them shows it through a mise-en-place metaphor in which the basic concepts for this research are pre-prepared in addition to the strategies used for such process. The second moment is comprised by the incursion in the studied territory through the narrative of women settlers and their families as well as composed by showing the analysis made by the cartographer in what is circumscribed in the field of Cultural Studies in Education. The focus of this paper is directed to some cultural transformations in the techniques used in the food preparation, in the selection of ingredients, in the time spent in the act of cooking, in knowledges passed on, in the urbanisation and industrialisation process in the rural area. This essay core is the space-time journeys and the cultural vicissitudes. The gol of this work is to problematize through these grounds how a fast-forward perception of time has been created, correlated to some aspects of use of technologies, to the globalisation phenomena, to te relations between production and consumption, to the territory that emerges as gastronomy, to the memory and the creation of traditions.
19

Tempo e espaço no currículo escolar

Brandão, Arlita Rodrigues 31 August 2009 (has links)
Made available in DSpace on 2015-03-04T20:06:51Z (GMT). No. of bitstreams: 0 Previous issue date: 31 / Nenhuma / Problematizar o uso do tempo-espaço no currículo escolar na formação de sujeitos Modernos é a proposta desta dissertação. O material empírico foi organizado a partir da inserção em uma escola de tempo integral – CIEP, localizada na cidade de Santo Ângelo, Rio Grande do Sul. Objetivando analisar enunciados produzidos sobre a escolarização de tempo integral, compus o material analítico de 22 registros fotográficos justificando sua escolha. Das recorrências dos enunciados foi definido o problema de pesquisa, assim como as três categorias de análises. A pergunta de pesquisa – “Como categorias de tempo e espaço estão implicadas em práticas curriculares que se voltam para a constituição de sujeitos escolares desejáveis dentro de uma dada ordem social em uma escola de tempo integral?”. E, por conseguinte, as categorias de análise que permitiram fazer percursos interpretativos: 1) espaço e tempo como elementos para a constituição dos alunos nas práticas curriculares; 2) práticas curriculares como envolvimento de todo / To question the use of time-space in school curriculum in the formation of Modern subjects is the aim of this thesis. The empirical data was organized from the researcher insertion in a full-day school – CIEP, located in Santo Ângelo, Rio Grande do Sul. In order to analyze statements produced regarding full-day school-based, I assembled an analytic data of 22 photographic records justifying its choice. From the recurrence of statements it was defined the research question, as well as the three categories of analysis. The research question – “How time and space categories are implicated in curriculum practices concerned with the constitution of a desired school body inside certain social order in a full-day school?”. And, thereafter, the categories of analysis which allowed undergoing the interpretative paths: 1) time and space as elements for the constitution of the students in the curriculum practices; 2) curriculum practices as a collective involvement in school’s time-space; 3) pedagogical practices that r
20

Timescapes: espaço e tempo na artemídia / Timescapes: espaço e tempo na artemídia

Eduardo Antonio de Jesus 06 May 2008 (has links)
Este trabalho é uma reflexão sobre as relações espaço-temporais que emergem das obras de artemídia, notadamente as que operam na fronteira entre real e virtual. A pesquisa estrutura-se em torno da conceituação de um arranjo espaço-temporal, que definimos como timescape, percebido em distintos graus de intensidade. Para tanto desenvolvemos uma cartografia que associa o desenvolvimento tecnológico, suas imbricações e ligações com a contemporaneidade e as manifestações artísticas, observando como essas situações se alteram em relação ao tempo. A pesquisa também contempla um conjunto de análises de obras de artemídia de artistas como o grupo Blast Theory, Rafael Lozano-Hemmer, Jeffrey Shaw e Giselle Beiguelman, entre vários outros. / This research is a reflection on spatial-temporal relationships that emerge from media art works, mainly on the border between real and virtual reality. The investigation is based on the concept of a space-time arrangement, which we define as timescapes. Therefore we developed a cartography that combines technology development, its imbrications and relations with contemporaneity and artistic events, observing how the relationships have changed In relation to the time. The research also includes a set of analyses of media artworks like Blast Theory, Rafael Lozano-Hemmer, Jeffrey Shaw, Giselle Beiguelman and from numerous others.

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