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Determinar y comparar la precisión en los dispositivos móviles Android de gama media y alta en modo Sps vs A-Gps por la red móvil.
(Escuela Superior Politécnica de Chimborazo, 2018-07)
The purpose of the titration work was to determine and compare the accuracy of mid-range and high-end mobile device in standard positioning service (SPS) operation modes and the assisted global positioning service (A-GPS) ...
Desenvolvimento e testes de software de um receptor de GPS para uso espacial
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2011-03-25)
Spacecraft move with high speeds and suffer abrupt changes in acceleration. So, an
onboard GPS receiver could calculate navigation solutions if the Doppler effect is taken into
consideration during the satellite signals ...
Construção e validação de um receptor GPS para uso espacial
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2009-11-20)
Global Positioning System, or simply GPS, it is a radionavigation system developed by United States for military applications, but it becames very useful for civilian using. In the last decades Brazil has developed sounding ...
The wavelet method as an alternative for reducing ionospheric effects from single-frequency GPS receivers
(Springer, 2007-12-01)
The ionospheric effect is one of the major errors in GPS data processing over long baselines. As a dispersive medium, it is possible to compute its influence on the GPS signal with the ionosphere-free linear combination ...
Use of a Single L1 GPS Receiver for Monitoring Structures: First Results of the Detection of Millimetric Dynamic Oscillations
(ASCE-AMER SOC CIVIL ENGINEERSRESTON, 2012)
This paper presents preliminary results to determine small displacements of a global positioning system (GPS) antenna fastened to a structure using only one L1 GPS receiver. Vibrations, periodic or not, are common in large ...
Receptores GPS de três precisões e estação total na caracterização de cotas básicas para projetos rurais
(Associação Brasileira de Engenharia Agrícola (SBEA), 2006-04-01)
O objetivo deste estudo foi comparar cotas de vértices de uma poligonal, considerando dados coletados por três diferentes receptores GPS, usando como testemunha uma estação total. Os dados foram obtidos em uma poligonal ...
A precisão possível com GPS L1-C/A em georreferenciamento: o desafio do multicaminho
(Universidade Federal de Santa MariaBRGeociênciasUFSMPrograma de Pós-Graduação em Geomática, 2005-11-24)
Since the creation of the system Navstar/GPS, several sources of observation errors went identified and studied by the scientific community, like as solution of ambiguities, delay ionospheric and non clock synchronous. The ...
Methodology for assessing the GPS receiver performance of agricultural use under kinematic conditionMetodologia para avaliação do desempenho de receptor de gps de uso agrícola em condição cinemática
(2010-01-01)
Activities that use Global Navigation Satellite System (GNSS) are countless and the most used one is the Global Positioning System (GPS) developed by the United States. In precision agriculture there are demands for static ...
Receptores GPS de três precisões e estação total na caracterização de cotas básicas para projetos rurais
(2006-08-11)
The objective of this work was to compare cotas of polygonal vertices, through three different receiving GPS, using as reference a total station. The data were obtained in a closed polygonal, being treated later by the ...
Dual-antenna dual-band high performance cubesat-compatible GPS receiver
(Institute of Electrical and Electronics Engineers, 2020-03-21)
Nanosatellites are revolutionizing the space industry allowing low-cost educational, scientific or commercial space missions. Among them, the CubeSats play a key role due to their standardization and increasingly use. As ...