Results 51 to 60 of about 17,319 (249)

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

Performances of a GNSS receiver for space-based applications [PDF]

, 2010
Space Vehicle (SV) life span depends on its station keeping capability. Station keeping is the ability of the vehicle to maintain position and orientation. Due to external perturbations, the trajectory of the SV derives from the ideal orbit.
Bousquet, Michel, Boutillon, Emmanuel, Calmettes, Vincent, Dion, Arnaud   +3 more
core  

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

Precise Orbit and Clock Products of Galileo, BDS and QZSS from MGEX Since 2018: Comparison and PPP Validation

Remote Sensing, 2020
In recent years, the development of new constellations including Galileo, BeiDou Navigation Satellite System (BDS) and Quasi-Zenith Satellite System (QZSS) have undergone dramatic changes. Since January 2018, about 30 satellites of the new constellations
Xingxing Li, Yiting Zhu, Kai Zheng, Yongqiang Yuan, Gege Liu, Yun Xiong   +5 more
doaj   +1 more source

Tropospheric Propagation Effects Extracted From ADS‐B Messages

Engineering Reports, Volume 7, Issue 12, December 2025.
This study explores the use of ADS‐B messages to estimate tropospheric effects, effectively isolating atmospheric influences from interference. The approach enables independent lower atmosphere studies and offers a cost‐free supplementary method for satellite applications, benefiting GNSS systems, especially at low elevation angles where multipath and ...
Alina‐Mihaela Badescu
wiley   +1 more source

Legal Aspects of European Satellite Navigation Systems in a Time of Change

Studia Iuridica Lublinensia, 2023
Global Navigation Satellite System (GNSS) is an important tool in supporting innovation and developing the economy. The European Union has created two systems: Galileo and EGNOS (European Geostationary Navigation Overlay Service), which enable the ...
Zuzanna Kulińska-Kępa
doaj   +1 more source

Design of a Solar Energy Storage Emergency Rescue Backpack Integrated With Global Positioning System, Light Emitting Diode, and a Heating Module

Energy Science &Engineering, Volume 13, Issue 12, Page 6160-6169, December 2025.
ABSTRACT Mountain climbing often involves sudden weather changes, group separation, and mobile device battery depletion, which can lead to life‐threatening emergencies. Enhancing survival and extending rescue time in such situations are crucial, making power supply and emergency equipment essential considerations.
Jian‐Sheng Huang, Li‐Chin Shih
wiley   +1 more source

Pronti ad affrontare il mercato di massa con i nuovi servizi Galileo

GEOmedia, 2014
Initial Galileo services will start at the end of this year. For this reason, the European Space Agency (ESA) is working alongside the European chip manufacturers of satellite navigation to the mass market, to ensure that their products are compatible ...
Renzo Carlucci
doaj   +2 more sources

Multipath mitigation for GPS/Galileo/BDS-3 precise point positioning with overlap-frequency signals

Satellite Navigation
The multipath effect is a major Global Navigation Satellite System (GNSS) error source due to its environment-dependent characteristic, which complicates its mitigation process for the high-rate determination of displacements.
Jianghui Geng, Honghai Zhang, Guangcai Li, Yosuke Aoki   +3 more
doaj   +1 more source

Testing multi-GNSS (GPS/GLONASS/Galileo/BeiDou/IRNSS) and wide-lane performance for long baselines

Geodesy and Cartography
With the rapid development of multi-constellation global navigation satellite systems (GNSS), the world of satellite navigation has undergone tremendous changes.
Atınç Pırtı
doaj   +1 more source