Results 231 to 240 of about 3,586,600 (279)

Satellite Selection for Multi-Constellation SBAS

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2016
The incorporation of multiple constellations into satellite based augmentation systems (SBAS) may lead to cases where there are more corrected satellites in view than a receiver has tracking channels. This paper addresses two related topics: identifying the most important satellites to track in order to provide availability; and identifying a ...
Todd Walter, Juan Blanch, Victoria Kropp
openaire   +1 more source

Research on Properties of DOP in Multi-constellation

2014 Seventh International Symposium on Computational Intelligence and Design, 2014
With the continuous development and improvement of GNSS, the multi-constellation will be the main navigation mode in the future. Dilution of precision (DOP) has been widely used as an accuracy metric and for navigation and tracking systems. Properties of DOP in multi-constellation are one of the crucial elements to be studied.
Wenwen Wang, Bin Huang
openaire   +1 more source

Alternative Architecture for Dual Frequency Multi-Constellation GBAS

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2021
This paper describes an alternative architecture candidate proposal for consideration for the future Dual Frequency MultiConstellation (DFMC) Ground Based Augmentation System (GBAS). The GBAS architecture candidate builds off the work done over the last 10 years by the Single European Sky Air Traffic Management Research (SESAR) program.
Tim Murphy, Matt Harris, Gary McGraw, Joel Wichgers, Linda Lavik, Morten Topland, Mutaz Tuffaha, Susumu Saito   +7 more
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On Solving the Multi-Constellation Pseudorange Equations

Navigation, 2010
Future Global Navigation Satellite System (GNSS) receivers may employ a combination of different navigation satellite constellations to provide positioning, navigation, and timing information. As different constellations may not be time-synchronized, the multi-constellation navigation problem involves the determination of position of the receiver and ...
openaire   +1 more source

A new GNSS multi constellation simulator: NAVYS

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2010
With the multiplication of navigation systems (GPS, GALILEO, GLONASS, QZSS, …) and the large variety of signals to be received, GNSS constellation simulators need to be more and more flexible. In the scope of its navigation activities, the CNES has expressed the need for a simulator that, in addition to allow the test of a large variety of receivers ...
Geraldine Artaud, Antoine de Latour, Joel Dantepal, Lionel Ries, Nicolas Maury, Jean-Christophe Denis, Eric Senant, Thomas Bany   +7 more
openaire   +1 more source

Satellite selection methods for multi-constellation advanced RAIM

Advances in Space Research, 2020
Abstract The increased number of potential threat modes under multi-constellation advanced receiver autonomy integrity monitoring (ARAIM) requires an increase in the number of subsets and a correspondingly high computational load. A new satellite selection method based on integrity support message (ISM) parameters is proposed and compared with GDOP ...
Silong Luo, Li Wang, Rui Tu, Weiqi Zhang, Jiancheng Wei, Cunting Chen   +5 more
openaire   +1 more source

Implicit Transmission of Coded Information Using Multi-Constellation Signaling

IEEE Communications Letters, 2017
A multi-constellation signaling (MCS) technique is proposed to implicitly transmit coded bits in addition to explicitly transmitted bits over the channel to increase the throughput. MCS schemes select one out of $N(>1)$ constellations based on a set of implicit bits during every interval.
John P. Fonseka, Elahe Rezaei
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Multi-layered Multi-constellation GNSS Interference Mitigation

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2021
Several layers of defense can be implemented in a Global Navigation Satellite System (GNSS) receiver to improve its performance in the presence of interference. These layers include the use of pre-correlation mitigation techniques, post-correlation quality indicators to screen measurements and Fault Detection and Exclusion (FDE) at the position ...
Ciro Gioia, Daniele Borio
openaire   +1 more source

Acquisition algorithm for GNSS multi-constellation signals

Scientia Sinica Physica, Mechanica & Astronomica, 2011
Multi-constellation receivers will become popularity since the current satellite navigation systems are transforming from the solo GPS to multi GNSS constellations. The traditional fast acquisition algorithms in time domain and frequency domain for signal of special satellite system have their own shortages.
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On exact solutions of the multi-constellation GNSS navigation problem

GPS Solutions, 2008
In Global Navigation Satellite System (GNSS) positioning, the receiver measures the pseudorange with respect to each observable navigation satellite and determines the position and clock bias. In addition to the GPS, several other navigation satellite constellations including Glonass, Galileo and Compass can/will also be used to provide positioning ...
Jyh-Ching Juang, Yung Fu Tsai
openaire   +1 more source