Results 81 to 90 of about 18,773 (179)

A Comparative Analysis of the Effect of Orbital Geometry and Signal Frequency on the Ionospheric Scintillations over a Low Latitude Indian Station: First Results from the 25th Solar Cycle

Remote Sensing
The equatorial post-sunset ionospheric irregularities induce rapid fluctuations in the phase and amplitude of global navigation satellite system (GNSS) signals which may lead to the loss of lock and can potentially degrade the position accuracy.
Ramkumar Vankadara, Nirvikar Dashora, Sampad Kumar Panda, Jyothi Ravi Kiran Kumar Dabbakuti   +3 more
doaj   +1 more source

Fast Screening Algorithm for Satellites Based on Multi-Constellation System

Electronics
This paper proposes a fast satellite screening algorithm aimed at the problem of balancing between positioning accuracy and system computing efficiency in a multi-constellation system environment under the Global Navigation Satellite System (GNSS).
Weidong Zhou, Zhiqiang Wu
openaire   +1 more source

Architecture Design and Key Technologies Analysis of LEO Satellite Mega-Constellations

天地一体化信息网络
The large number of network elements in the mega-constellations pose a severe challenge to the existing network architecture and technical system.Based on the concept and characteristics of constellation architecture, combined with the development of ...
Zihe GAO, Haipeng YAO, Lei ZHANG, Yulin SHI, Fu WANG, Ying TAO   +5 more
doaj   +2 more sources

The Performance of GNSS Services for the Area Navigation Applications of Civil Aviation in CR [PDF]

, 2014
Disertační práce pojednává o navigační výkonnosti GPS/EGNOS v oblasti polohy uživatele. Posouzení navigačních systémových schopností podpory zabezpečení nových letových postupů vychází ze statických observací a příkladů jejich zpracování.
Ptáček, Pavel
core  

Mass-Market Receiver for Static Positioning: Tests and Statistical Analyses [PDF]

, 2011
Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good realtime performances in outdoor condition.
Cina, Alberto, Marucco, G., Piras, Marco
core  

Evaluation of GPS L5 and Galileo E1 and E5a Performance for Future Multi Frequency and Multi Constellation GBAS [PDF]

, 2015
In this paper, we show a performance analysis of different signals from the new Galileo satellites in the E1 and E5a frequency bands as well as GPS L5 signals in DLR’s experimental Ground Based Augmentation System (GBAS).
Antreich, Felix, Circiu, Mihaela-Simona, Enneking, Christoph, Felux, Michael, Pullen, Sam, Sgammini, Mateo, Thoelert, Steffen, Vergara, Mariano   +7 more
core  

Performance Comparison among Multi-GNSS Single Frequency Precise Point Positioning Techniques

Kartografija i Geoinformacije, 2019
Precise Point Positioning (PPP) is a technique able to compute high accuracy positioning anywhere using a single GNSS receiver and without the need for corrections from reference stations.
Anna Innac, Antonio Angrisano, Salvatore Gaglione, Mario Vultaggio, Nicola Crocetto   +4 more
doaj  

Distributed Timing and Localization (DiGiTaL) [PDF]

The Distributed Timing and Localization (DiGiTaL) system provides nano satellite formations with unprecedented,centimeter-level navigation accuracy in real time and nanosecond-level time synchronization.
Baker, Christopher, D'Amico, Simone, Hunter, Roger C.   +2 more
core   +1 more source

Low power, reduced complexity filtering and improved tracking accuracy for GNSS [PDF]

, 2014
This thesis addresses the power consumption problems resulting from the advent of multiple GNSS satellite systems which create the need for receivers supporting multi-frequency, multi-constellation GNSS systems.
Cetinsel Sevket, Cetinsel Sevket
core  

Ionospheric irregularity observation by VHF radar and GNSS scintillation monitor at Sanya [PDF]

, 2017
15th MST Radar WorkshopSession M3: Ionospheric irregularities and IS experimentsMay 27 (Sat), NIPR ...

core   +1 more source