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Ajustamento de redes GPS em conformidade com as exigências da lei 10.267/2001
(2009-12-21)
In Brazil, there have been several GPS applications and with the introduction of the Law 10.267/2001 that among other dispositions, deals with georeferencing of the rural parcels. However, most commercial softwares of ...
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 ...
Calculating position and velocity vectors of GLONASS satellites from broadcast ephemeris and aspects related to its integration with GPSCálculo dos vetores de posição e velocidade dos satélites GLONASS a partir das efemérides transmitidas e aspectos relacionados à sua integração com o GPS
(2013-01-01)
This paper presents details on the estimation of position and velocity vectors for GLONASS satellites from their broadcasted ephemeris using forth-order Runge-Kutta integration method and deals with the compatibility between ...
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 ...
Application of the GPS system for preliminary satellite orbit determination
(1997-12-01)
In this paper, we discuss a method of preliminary orbit determination for an artificial satellite based on the navigation message of the GPS constellation. Orbital elements are considered as state variables and a simple ...
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 ...
Comparison of snow data assimilation system with GPS reflectometry snow depth in the Western United States
(Wiley-Blackwell, 2015-05-15)
In this study, we compare gridded snow depth estimates from the Snow Data Assimilation System (SNODAS) with snow depth observations derived from GPS interferometric reflectometry (GPS-IR) from roughly 100 Plate Boundary ...
Analysis of precise point positioning with GPS and glonass data in different latitudesAnálise do posicionamento por ponto preciso com dados GPS e glonass em diferentes latitudes
(2020-01-01)
GNSS (Global Navigation Satellite System) is, nowadays, composed of two complete systems, GPS (Global Positioning System) and GLONASS (GLObal NAvigation Satellite System). Although the simultaneous development, the systems ...
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 ...
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 ...