Results 81 to 90 of about 431 (152)

Coastal Bathymetric Sounding in Very Shallow Water Using USV: Study of Public Beach in Gdynia, Poland. [PDF]

Sensors (Basel), 2023
Makar A.
europepmc   +1 more source

Robust Determination of Smartphone Heading by Mitigation of Magnetic Anomalies

Navigation
We introduce an algorithm that provides robust three-dimensional orientation of a smartphone for pedestrian indoor localization. The algorithm focuses on integration of the magnetometer and a reformulated observation model such that the influence of ...
Andreas Ettlinger, Andreas Wieser, Hans Neuner   +2 more
doaj   +1 more source

Doppler Positioning Using Multi-Constellation LEO Satellite Broadband Signals as Signals of Opportunity

Navigation
This paper investigates the potential of signals of opportunity for positioning using broadband low Earth orbit constellations. We developed analytical absolute and differential models based on Doppler-shift observations from multi-constellation ...
Amir Allahvirdi-Zadeh, Ahmed El-Mowafy, Kan Wang   +2 more
doaj   +1 more source

Comprehensive Analysis of Acquisition Time for a Multi-Constellation and Multi-Frequency GNSS Receiver at GEO Altitude

Navigation
The utilization of global navigation satellite systems (GNSSs) in the space service volume, such as the geostationary Earth orbit (GEO) altitude, has recently attracted significant interest owing to their potential advantages in performance and cost ...
Young-Jin Song, Ki-Ho Kwon, Jong-Hoon Won   +2 more
doaj   +1 more source

Dynamic Semantic World Models and Increased Situational Awareness for Highly Automated Inland Waterway Transport. [PDF]

Front Robot AI, 2021
Van Baelen S, Peeters G, Bruyninckx H, Pilozzi P, Slaets P.   +4 more
europepmc   +1 more source

Candidate Design of New Service Signals in the NavIC L1 Frequency Band

Navigation
Satellite navigation payloads use a constant-envelope composite signal to efficiently operate their high-power amplifiers in the saturation region. This composite signal consists of multiple signals that are multiplexed at the baseband level to support ...
Vijay Singh Bhadouria, Dhaval J. Upadhyay, Parimal J. Majithiya, Subhash Chandra Bera   +3 more
doaj   +1 more source

Wide-Sense CDF Overbounding for GNSS Integrity

Navigation
The need for highly reliable positioning in safety-of-life applications has led to the development of global navigation satellite system (GNSS) augmentation systems such as satellite-based augmentation systems and advanced receiver autonomous integrity ...
Odile Maliet, Kin Mimouni, Julie Antic, Sébastien Trilles   +3 more
doaj   +1 more source

Improving suitability of urban canals and canalized rivers for transportation, thermal energy extraction and recreation in two European delta cities. [PDF]

Ambio, 2023
van der Meulen ES, van de Ven FHM, van Oel PR, Rijnaarts HHM, Sutton NB.   +4 more
europepmc   +1 more source

Robust Interference Mitigation in GNSS Snapshot Receivers

Navigation
The robust interference mitigation (RIM) framework offers a promising solution to jamming attacks on global navigation satellite system (GNSS) receivers. By identifying interfered samples as outliers in the selected transform domain, RIM operates without
Helena Calatrava, Adrià Gusi-Amigó, Floor Melman, Pau Closas   +3 more
doaj   +1 more source

GNSS L5/E5a Code Properties in the Presence of a Blanker

Navigation
Modern global navigation satellite system L5/E5a code families offer improved correlation properties, with lower auto-correlation sidelobes and cross-correlations, compared with legacy Global Positioning System L1 coarse/acquisition (C/A) codes. However,
Seunghwan Kim, Nicolas Gault, Yongrae Jo, Hyosang Yoon, Byungwoon Park, Axel Garcia-Pena, Christophe Macabiau, Dennis M. Akos   +7 more
doaj   +1 more source