Localization Algorithm
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Recurrent Algorithm for TDOA Localization in Sensor Networks
ABSTRACT: Using the mathematical apparatus of the extended Kalman Filter, the recurrent algorithm of the passive location in sensor networks - based on the Time Difference of Arrival method in case of correlated errors of measurements - is developed. The initial estimates of Radio Frequency Sources coordinates and the correlation matrix of the vector estimat
J. Aerosp. Technol. Manag.. Publicado em: 02/10/2017
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2. Um algoritmo de segmentação de íris em tempo real / An iris segmentation algorithm in real time
Iris segmentation is one of the crucial operations involved in iris recognition. Accurate iris segmentation is fundamental for the success and precision of the subsequent feature extraction and recognition, and consequently the high performance level of the iris recognition system. Most iris segmentation approaches proposed in the literature require highly c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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3. Inclusão de MRI e informação multigrid a priori para inferência bayesiana de fontes de M/EEG / MRI image and multigrid a priori information for bayesian M/EEG source localization
Functional Neuroimaging has evolved in the last few decades with the introduction of techniques such as Positron Emission Tomography or PET and Functional Magnetic Ressonance Image or fMRI [Belliveau et al., 1991]. These allow observing brain activity with a resolution of a few millimeters and, due to the nature of the signal, a time resolution of the order
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/04/2011
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4. On-line SLAM using clustered landmarks with omnidirectional vision
The problem of SLAM (simultaneous localization and mapping) is a fundamental problem in autonomous robotics. It arises when a robot must create a map of the regions it has navigated while localizing itself on it, using results from one step to increase precision in another by eliminating errors inherent to the sensors. One common solution consists of establi
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12
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5. Adaptive complementary filtering algorithm for mobile robot localization
As a mobile robot navigates through an indoor environment, the condition of the floor is of low (or no) relevance to its decisions. In an outdoor environment, however, terrain characteristics play a major role on the robot's motion. Without an adequate assessment of terrain conditions and irregularities, the robot will be prone to major failures, since the e
Journal of the Brazilian Computer Society. Publicado em: 2009-09
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6. Redes neurais artificiais aplicadas ao problema da localização em ambientes fechados
This thesis addresses the indoor location problem using on artificial neural networks-based techniques. In this system, the received signal strength information (RSSI) provided by standard network wireless interfaces are the basis for mobile devices location prediction. Traditional methods of indoor location have several undesirable characteristics, such as
Publicado em: 2009
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7. NODE LOCALIZATION ALGORITHM TO MOBILE SENSOR NETWORKS / ALGORITMO DE LOCALIZAÇÃO DE NODOS PARA REDES DE SENSORES MÓVEIS
Esta Tese apresenta contribuições ao processo de localização de nodos em redes de sensores móveis. Considerando a importância de algoritmos de localização em uma rede para identificar o local do evento sob estudo e determinar a ação a ser tomada pelo usuário, é desenvolvido um novo algoritmo de localização para operar em redes de sensores móve
Publicado em: 2009
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8. Monitorização e localização de defeitos na soldagem tig através do sensoriamento infravermelho
This work presents, in an exploratory form, the use of infrared emissions of the TIG arc as a parameter for process monitoring, detection and localization of defects or discontinuity during welding. A infrared sensor was used for focalizing part of the arc and weld pool and transformed the intensity of infrared radiation presented in the surrounding regions
Publicado em: 2008
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9. Localização de usuários usando o sistema celular. / Users localization using cellular system.
The mobile location technique using the cellular system received a special attention from the telecommunication manufacturers and operators, regarding the need of accomplishing the established demands by the emergency service calls and other commercial ones. This study analyzes the main location methods proposed in the literature, including, in each one, the
Publicado em: 2007
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10. Detection, localization and classification algorithm for power quality disturbances using wavelet transform / Um algoritmo para detecção, localização e classificação de distúrbios na qualidade da energia elétrica utilizando a transformada wavelet
A Qualidade da energia elétrica é caracterizada pela disponibilidade da energia através de uma forma de onda senoidal pura, sem alterações na amplitude e freqüência. No entanto situações transitórias em sistemas de potência são comuns e estas podem provocar inúmeras interferências indesejáveis. Neste contexto, este trabalho tem como objetivo d
Publicado em: 2007
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11. A one-shot inpainting algorithm based on the topological asymptotic analysis
The aim of this article is to propose a new method for the inpainting problem. Inpainting is the problem of filling-in holes in images. We consider in this article the crack localization problem, which can be solved using the Dirichlet to Neumann approach and the topological gradient. In a similar way, we can define a Dirichlet and a Neumann inpainting probl
Computational & Applied Mathematics. Publicado em: 2006
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12. Study of optimized localization of equipments for contamination detection in water distribution networks / Estudo da localização otimizada de equipamentos para detecção de contaminação em redes de distribuição de água
The water supply quality is very important to the healthy of urban nucleus populations around the world. This is the reason why many researches focus on such theme. Besides this, recent terrorist attacks occurred in USA and Europe, have incited the old apprehension related to possible deliberate intrusions of contaminants into the water supply networks, maki
Publicado em: 2006