Global Positioning Systems
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. GENERATION AND PERFORMANCE ANALYSIS OF GPS AND GLONASS VIRTUAL DATA FOR POSITIONING UNDER DIFFERENT IONOSPHERIC CONDITIONS
Abstract Several approaches concerning the use in positioning of GNSS (Global Navigation Satellite Systems) can be considered: systems, applied methods and errors that can affect the signals. Following the GLONASS (GLObal NAvigation Satellite System) constellation reestablishment (2011), there was renewed interest in its use with GPS (Global Positioning Syst
Bol. Ciênc. Geod.. Publicado em: 10/07/2019
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2. Análise espacial tridimensional e geoestatística de dados multi-fonte de superfície e subsolo aplicada à modelagem prospectiva de mineralizações auríferas no quadrilátero ferrífero¿MG / Geophysical and geostatistical analysis of surface and underground muultisource data applied to prospectivity modelling of gold deposits in Quadrilátero Ferrífero ¿ MG - Brazil
O Quadrilátero Ferrífero é uma das maiores províncias metalíferas do mundo e possui potencial aurífero exploratório considerável visto o grande número de minas que produzem, ou já produziram no passado, milhares de toneladas desse metal. Depósitos auríferos importantes como Mina Grande, Cuiabá e Raposos, considerados gigantes e de classe mundial
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2011
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3. Image matching and classification for UAV navigation.
Unmanned aerial vehicles, known as UAVs, have evolved over the past two decades to sophisticated aircraft robots able to carry out surveillance, recognition, remote sensing and even attack missions. But there are not many alternatives of autonomous navigation systems for most of these aircraft which still require human intervention to navigate. Devices such
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/11/2010
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4. Design of a passive nonlinear observer and a backstepping controller for surface vessels. / Projeto de um observador passivo não-linear e de um controlador backstepping para navios de superfície.
Dynamic Positioning Systems (DPS) are control systems used to maintain the vessel on a desired position or pre-defined path exclusively by means of active thrusters. A DPS can be separated into a set of dedicated modules with designated tasks. The most significant modules are the position and heading measurement systems, the state estimator, the controller a
Publicado em: 2010
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5. Image matching and classification for UAV navigation.
Unmanned aerial vehicles, known as UAVs, have evolved over the past two decades to sophisticated aircraft robots able to carry out surveillance, recognition, remote sensing and even attack missions. But there are not many alternatives of autonomous navigation systems for most of these aircraft which still require human intervention to navigate. Devices such
Publicado em: 2010
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6. Proposta de interconexão do padrão ISO 11783 com redes de sensores sem fio padrão ZigBee. / A proposal for interconnection between ISO 11783 standard network and ZigBee wireless sensor networks.
Precision Agriculture is one of the technological advances used to recoup the treatment of spatial and temporal variability in agricultural crops. Besides other benefits, it tries to improve the exploitation of applied inputs, improve the productivity and reduce production cost as well as lessen the impact on environment caused by excess of input. To achieve
Publicado em: 2010
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7. Melhorias no sistema de planejamento, programação e controle da produção : um estudo de caso em empresa eletroeletrônica
The flexibility of the production systems became indispensable for the survival of the companies of manufacture in the global market, who stimulated for the increasing advance of the technologies used in the processes, nor always find resonance in the systems of PPCP (planning, programming and control of the production) existing. In this direction, this diss
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2009
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8. On board sensing system to control variable rate agricultural inputs / Sistemas de sensoriamento embarcado para uso em controle de aplicações de insumos agrícolas à taxa variável
The development of systems able to join different technological tools is very important in order to provide support for Precision Agriculture and it stimulates the creation of interdisciplinary teams to obtain favorable results to increase agricultural productivity. The main goal of this work is to study applications of embedded sensing systems in agricultur
Publicado em: 2009
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9. Processamento embarcado aplicado a um sistema de deteccão de vazamentos
Os sistemas embarcados estão amplamente difundidos atualmente. Um exemplo é o Digital Signal Processor (DSP), que é um dispositivo com alto poder de processamento. A contribuição deste trabalho consiste na implementação em DSP da lógica de um sistema de detecção de vazamentos em tempo real. Dentre os vários métodos de detecção de vazamentos exi
Publicado em: 2009
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10. Protocolo ISO 11783: procedimentos para comunicação serial de dados do controlador de tarefa / ISO 11783 protocol: procedures for serial data communication with the task controller
The recent growth of automation technology and embedded electronic in agricultural machinery has established a new practice in agriculture. These new practices related to precision agriculture (PA) have demanded the use of sensors and communications embedded networks for data acquisition and control devices in the farm field. The incompatibility between hard
Publicado em: 2009
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11. Influência da geometria dos satélites na precisão das coordenadas geodésicas obtidas com o sistema GPS / Influence of satellite geometry on the geodetic coordinates precision from GPS determinations
The obtaining precision of GPS (Global Positioning System) surveying depends on of many factors, due the several error fonts. In general, these interferences can be modeled and considerations are made as each one contributes. In the beginning of the positioning systems, the mission planning was essential to find the period of the day that would possible to h
Publicado em: 2008
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12. Dynamic generation metodology of road travel patterns to vehicles intelligent monitoring in AVL systems. / Metodologia de geração dinâmica de padrões de viagens rodoviárias para monitoramentos inteligentes de veículos de carga em sistemas AVL.
This dissertation addresses the question of vehicle travel adherence in intelligent monitoring with Automatic Transportation Location (AVL) operating in a regional environment. A trip is considered as series of runs, corresponding to time in movement but excluding time spent on activities such as loading/unloading and others. Based on historic data collected
Publicado em: 2008