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Mitigating systematic errors for single frequency GPS receivers employing a penalized least squares methodology
(2006-12-27)
Among the positioning systems that compose GNSS (Global Navigation Satellite System), GPS has the capability of providing low, medium and high precision positioning data. However, GPS observables may be subject to many ...
GPS: El sistema de posicionamiento globalGPS: El sistema de posicionamiento global (ING)
(Universidad Nacional de Costa Rica, 2016)
Evaluación del rendimiento del sistema de posicionamiento global (GPS) e INS/GPS sobre una trayectoria establecida.
(Escuela Superior Politécnica de Chimborazo, 2020-07-16)
The analysis of the accuracy of the Global Positioning System (GPS) versus hybrid positioning system GPS and Inertial of Navigation. System (INS) allows determining which them offers greater accuracy in following an ...
GPS Diffractive Reflectometry: Footprint of a Coherent Radio Reflection Inferred From the Sensitivity Kernel of Multipath SNR
(Ieee-inst Electrical Electronics Engineers Inc, 2016-10-01)
The validation of remote sensing environmental estimates requires knowledge of their spatial extent and resolution. Here, we consider coherent radio reflections routinely observed in ground-based global positioning system ...
Effects of the 12 May 2021 Geomagnetic Storm on Georeferencing
(MDPI, 2022)
In this work, we present the positioning error analysis of the 12 May 2021 moderate geomagnetic storm. The storm happened during spring in the northern hemisphere (fall in the south). We selected 868 GNSS stations around ...
Improving the GNSS positioning stochastic model in the presence of ionospheric scintillation
(Springer, 2009-10-01)
Ionospheric scintillations are caused by time-varying electron density irregularities in the ionosphere, occurring more often at equatorial and high latitudes. This paper focuses exclusively on experiments undertaken in ...
Global security and ecologyGlobal security and ecology
(Instituto de Geofísica, 2013)
Otimização da distância de extração de madeira com forwarder
(2008-09-01)
The activities and management operations of wood harvesting do not have good computational tools available to help the forest technicians with the task of cost reduction. In many cases, machines of high investment are used ...
Multivariate analysis of combined GPS/GLONASS point positioning performance in Brazilian regions under different ionospheric conditions
(2019-06-01)
The development of Global Navigation Satellite Systems (GNSS) was a revolution in activities related to positioning. Currently, GLONASS (Global'naya Navigatsionnaya Sputnikovaya Sistema) and GPS (Global Positioning System) ...
Estudio del impacto de la troposfera sobre la Señal de GPS L1 en la ciudad de Riobamba.
(Escuela Superior Politécnica de Chimborazo, 2019-12-27)
The impact produced by the layers of the atmosphere on the signal emitted from the satellites has been analyzed and studied with great importance since it is possible to evaluate the effect produced on the signs. One of ...