Results 81 to 90 of about 7,830 (211)

Freshly Generated Super Sunrise Plasma Bubbles During the Geomagnetic Storm on November 5–6, 2023

Space Weather, Volume 24, Issue 1, January 2026.
Abstract During the geomagnetic storm on November 5–6, 2023, freshly generated super sunrise equatorial plasma bubbles (EPBs) and associated irregularities over the 80°–140°E sector were observed combining ground‐based and space observations from GNSS, ionosondes, HF Doppler records, and several satellite missions (COSMIC2, Swarm, and DMSP).
Ke Li, Donghe Zhang, Yaoyu Tian, Yi Zeng, Guanglin Yang, Xiukuan Zhao, Guozhu Li, Yongqiang Hao   +7 more
wiley   +1 more source

Space-Time Reference with an Optical Link

, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul, Hollberg, Leo, Kahn, Joseph M., Taylor, Michael   +3 more
core   +1 more source

Predictive intelligence for a rail traffic management system [PDF]

, 2017
As the demands on terrestrial transport systems increase, there is a growing need for greater efficiencies. More intelligent mobility and ultimately autonomous transport assets will deliver these efficiencies through the evolution of cooperative ...
Bonenberg, Lukasz, Hill, Chris, Meng, Xiaolin, Moore, Terry, Roberts, Simon   +4 more
core   +1 more source

Interference Analysis of Beidou RDSS Users Traversing 5G Cell Networks

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter breaks through the limitations of traditional static deterministic analysis by comprehensively considering cellular network configurations, Doppler frequency shifts, and base‐station switching and provides a thorough analysis of the coexistence and compatibility between RDSS users and 5G cellular networks in dynamic environments.
Liming Du, Qian Wang, Yumeng Hou, Fangyuan Cheng   +3 more
wiley   +1 more source

Satelliittipaikannusjärjestelmät ja niiden hyödyt yrityksille [PDF]

, 2014
Eurooppa on kehittämässä uutta satelliittipaikannusjärjestelmää nimeltään Galileo. Tämän opinnäytetyön tavoitteena on analysoida paikannusjärjestelmät ja niiden tuomat mahdollisuudet.
Chung, Dat
core  

GNSS/RFID active transponder design [PDF]

, 2015
The paper describes a design of global navigation satellite system (GNSS)/Radio frequency identification (RFID) active transponder which is primarily designed for localization of objects as a part of localization system designated for efficient handling ...
Daniel Lopour, Jiri Hajek, Jiri Skapa, Lukas Vojtech, Marek Neruda, Radoslav Bortel, Tomas Korinek   +6 more
core   +2 more sources

Beidou Navigation Satellite System Development, Application, and Prospects

Highlights in Science, Engineering and Technology
The Beidou Navigation Satellite System (BDS), also known as Beidou, is an independently developed global satellite navigation system by China, and it is the third mature satellite navigation system following GPS and GLONASS. BDS, along with GPS, GLONASS, and GALILEO, is recognized by the United Nations Committee on Global Navigation Satellite Systems ...
Sian Lu, Siying Pan, Haotong Zheng
openaire   +1 more source

Edge‐Enabled DSRC Deployment in Highway Scenarios for Vehicle Lane Positioning and Driving Patterns Tracking

IET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This study proposes an enhanced vehicle tracking method that fuses GPS/INS data with RSSI signals in a connected vehicle environment to overcome the limitations of embedded sensors during abrupt manoeuvres. By employing an interacting multiple model algorithm that combines linear and non‐linear estimators, the method improves trajectory estimation and ...
Fan Zhang, Jiang Song, Pan Liu
wiley   +1 more source

THE DEVELOPMENT OF NAVIGATION SYSTEMS IN CIVIL AVIATION

Научный вестник МГТУ ГА, 2017
The article describes the history of navigation systems formation, such as "Cicada" system, which at that time could compete with the US "Transit", European, Chinese Beidou navigation system and the Japanese Quasi-Zenit.The detailed information about ...
A. S. Stepanenko
doaj  

WFH: A Wideband Frequency Hopping‐Based Anti‐Jamming Navigation Signal Structure

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
Given the limitations of existing satellite navigation signals in antijamming performance amid growing environmental jamming, this paper proposes a navigation signal structure based on wideband frequency hopping (WFH) modulation to enhance both antijamming capability and measurement accuracy. It further introduces the nonstationary effective carrier‐to‐
Chenyang Wang, Yihai Liao, Sicong Liu, Jianghong Shi, Ao Peng   +4 more
wiley   +1 more source