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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) ...
GPS availability and positioning issues when the signal paths are aligned with ionospheric plasma bubbles
(2018-10-01)
The propagation paths of signals through equatorial ionospheric irregularities are analyzed by evaluating their effects on Global Navigation Satellite System (GNSS) positioning and availability. Based on observations during ...
Posicionamento por ponto de alta precisão utilizando o GPS: Uma solução para a geodinâmica
(2000-03-01)
Point positioning from GPS data can provide precision varying from 100 meters to a few millimeters at the level of 95% probability. To reach the best level of accuracy, users need proper equipment and software, as well as ...
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 ...
An open source GPS multipath simulator in Matlab/Octave
(Springer, 2014-07-01)
Multipath is detrimental for both GPS positioning and timing applications. However, the benefits of GPS multipath for reflectometry have become increasingly clear for monitoring soil moisture, snow depth, and vegetation ...
Extended ionospheric amplitude scintillation model for GPS receivers
(Amer Geophysical Union, 2014-05-01)
Ionospheric scintillation is a phenomenon that occurs after sunset, especially in the low-latitude region, affecting radio signals that propagate through the ionosphere. Depending on geophysical conditions, ionospheric ...
Performance of the L2C civil GPS signal under various ionospheric scintillation effects
(2016-04-01)
As GPS is modernizing, there are currently fourteen satellites transmitting L2C civil code and seven satellites transmitting L5 signal. While the GPS observables are subject to several sources of errors, the ionosphere is ...
Assimilação do IWV-GPS no Brasil: Otimização das estimativas do atraso zenital troposférico em tempo real
(2007-07-01)
IWV (Integrated Water Vapor) values from the Brazilian Network for Continuous Monitoring (RBMC) of GPS (Global Positioning System) signals are additional sources of humidity information available for being used in Numerical ...