Results 81 to 90 of about 4,451 (211)
Accuracy analysis of direct georeferenced UAV images utilising low-cost navigation sensors [PDF]
, 2014 Unmanned aerial vehicles (UAVs), also known as unmanned airborne systems (UAS) or remotely piloted airborne systems (RPAS), are an established platform for close range airborne photogrammetry. Compared to manned platforms, the acquisition of local remote
Briese, Christian +5 more
core +1 more source
A review of key planning and scheduling in the rail industry in Europe and UK [PDF]
, 2015 Planning and scheduling activities within the rail industry have benefited from developments in computer-based simulation and modelling techniques over the last 25 years. Increasingly, the use of computational intelligence in such tasks is featuring more
Blacktop, K. +3 more
core +2 more sources
On Egnos Monitoring in Local Conditions
Artificial Satellites, 2013 ABSTRACT Any SBAS system should deliver to the user corrections to pseudoranges as well as information about the system integrity. In theory, as soon as the system is permanently monitored by RIMS stations, it is impossible to deliver the fault information to the user. However many observations shows that accuracy of EGNOS service in the same time
Andrzej Felski, Aleksander Nowak
openaire +1 more source
Comparing TOPEX TEC measurements with IRI predictions [PDF]
, 2008 TEC values obtained from TOPEX satellite were compared with the International Reference Ionosphere (IRI) 2001 model estimates. The present work also shows results of the IRI model with the option of a new topside electron density distribution (NeQuick ...
Ezquer, Rodolfo Gerardo +4 more
core +1 more source
September 2017's geoeffective space weather and impacts to Caribbean radio communications during Hurricane response [PDF]
, 2018 © The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Space Weather 16 (2018): 1190-1201, doi:10.1029/2018SW001897.Between 4 and 10 September 2017, multiple
He, Jing +4 more
core +1 more source
Modelling of the ionosphere by neural network for equatorial SBAS [PDF]
, 2015 The estimation of the ionosphere delay and associated confidence interval constitutes the major issue to reach APV1 availability performance level for single frequency SBAS above the equatorial area.
Authié, Thierry +2 more
core +1 more source
The accuracy of DGPS surveys on the basis of test measurements with a Leica GS20 receiver [PDF]
, 2007 In our article we deal with studying the accuracy of DGPS surveys. The test measurements focussed on this purpose with a LEICA GS20 GPS receiver were very useful for us for various reasons. Firstly, we got acquainted with the operation of a hand-held GIS
István Havasi, Márton Györffy
core
Ajouraopastin peltoviljelyssä [PDF]
, 2013 Tämä opinnäytetyö käsittelee ajouraopastimen tekniikkaa ja käyttöä peltoviljelyssä. Tarkoitus oli selvittää, pystytäänkö nykyaikaisella ajouraopastimella kohtuullisin kustannuksin toteuttamaan käytännöllinen järjestelmä, jolla tarkennetaan peltoviljelyä.
Paloviita, Janne
core
The ISIS Project: Indications for Future Near-Earth Plasma Studies through Future Galileo Satellites [PDF]
, 1968 The Earth’s plasmasphere variability is a consequence of the Sun’s forcing, determining our planet’s space weather. Plasmaspheric dynamics could be entirely caught only by studying together global and local proxies of the state of this extended system ...
Materassi, M. +10 more
core +1 more source
Static and cinematic tests of GPS receivers [PDF]
, 2011 Os sistemas de navegação global por satélites, em especial o GPS, mais completo e conhecido, tem multiplicado suas aplicações no meio agrícola. O desempenho de receptores, no entanto, não é devidamente conhecido entre os usuários; assim, este trabalho ...
MACHADO, Thiago M., MOLIN, José P.
core +3 more sources