Results 41 to 50 of about 18,773 (179)

Evaluation of advanced receiver autonomous integrity monitoring performance on predicted aircraft trajectories [PDF]

open access: yes, 2016
The development of new GNSS constellations, and the modernization of existing ones, has increased the availability and the number of satellites-in-view, paving the way for new navigation algorithms and techniques.
Atkin, Jason   +4 more
core   +1 more source

GNSS-ISE: Instruction Set Extension for GNSS Baseband Processing

open access: yesSensors, 2020
This work presents the results of research toward designing an instruction set extension dedicated to Global Navigation Satellite System (GNSS) baseband processing.
Krzysztof Marcinek, Witold A. Pleskacz
doaj   +1 more source

NLOS GPS signal detection using a dual-polarisation antenna [PDF]

open access: yes, 2012
The reception of indirect signals, either in the form of non-line-of-sight (NLOS) reception or multipath interference, is a major cause of GNSS position errors in urban environments.
Groves, PD, Jiang, Z
core   +1 more source

Constellation Shaped 3D HQAM-DPSK Modulation for Single Wavelength Multi-Dimensional Optical Transmission

open access: yesIEEE Access, 2023
A novel concept for single wavelength high spectral-efficient multi-dimensional optical transmission with geometric and probabilistic constellation shaping and bit mapping technique is presented in this study.
Jinwoo Park   +3 more
doaj   +1 more source

Examples of user algorithms implementing ARAIM techniques for integrity performance prediction, procedures development and pre-flight operations [PDF]

open access: yes, 2017
Advanced Receiver Autonomous Integrity Monitoring (ARAIM) is a new Aircraft Based Augmentation System (ABAS) technique, firstly presented in the two reports of the GNSS Evolutionary Architecture Study (GEAS). The ARAIM technique offers the opportunity to
Atkin, Jason   +5 more
core   +1 more source

Multi-constellation GNSS orbit combination based on MGEX products [PDF]

open access: yesAdvances in Geosciences, 2020
Abstract. The mission of the International GNSS Service (IGS) is to deliver highly accurate GNSS data and products to the scientific users and the community. Among these products, precise orbits, and clocks for GPS and GLONASS are available to the public.
G. Mansur   +5 more
openaire   +5 more sources

Multi-objective optimization of earth cooperative observation hybrid satellite constellation

open access: yesXibei Gongye Daxue Xuebao, 2021
As the demand for comprehensiveness, accuracy, and data fast return of satellite remote sensing information grows, a hybrid constellation with permanent inter-satellite link becomes an inevitable choice for earth cooperative observation.

doaj   +1 more source

The Impact of Satellite Time Group Delay and Inter-Frequency Differential Code Bias Corrections on Multi-GNSS Combined Positioning

open access: yesSensors, 2017
We present quad-constellation (namely, GPS, GLONASS, BeiDou and Galileo) time group delay (TGD) and differential code bias (DCB) correction models to fully exploit the code observations of all the four global navigation satellite systems (GNSSs) for ...
Yulong Ge   +4 more
doaj   +1 more source

Adaptive GNSS Receiver Design for Highly Dynamic Multipath Environments

open access: yesIEEE Access, 2020
Ubiquitous navigation requires timely, uninterrupted and accurate estimate of receiver's position at all times, in all environments and for all modes of transportation and it is highly dependent on satellite availability, geometry and accurate ...
Arif Hussain   +3 more
doaj   +1 more source

Exploring the accuracy of height measurements with multi-constellation RTK GNSS

open access: yesNova Geodesia
Accurate height determination is crucial in various geospatial applications, and Real-Time Kinematic (RTK) GNSS plays a key role in providing high-precision positioning.
Ibrahim O. RAUFU
doaj   +1 more source

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