Results 61 to 70 of about 7,830 (211)

Mitigation of Unmodeled Error to Improve the Accuracy of Multi-GNSS PPP for Crustal Deformation Monitoring [PDF]

, 2019
High-rate multi-constellation global navigation satellite system (GNSS) precise point positioning (PPP) has been recognized as an efficient and reliable technique for large earthquake monitoring.
Chang, Xiao, Ge, Maorong, Li, Pan, Li, Xingxing, Sang, Jizhang, Schuh, Harald, Zhang, Xiaohong, Zheng, Kai   +7 more
core   +1 more source

Daytime Ionospheric Density Enhancement Driven by Poleward Neutral Wind Shear Associated With Gravity Waves During the November 2025 Geomagnetic Storm

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from ...
Qi Jiang, Jiuhou Lei, Zhongli Li, Fuqing Huang, Rong Xia, Tong Dang, Xinan Yue, Xiaoli Luan   +7 more
wiley   +1 more source

Research on satellite selection algorithm in ship positioning based on both geometry and geometric dilution of precision contribution

International Journal of Advanced Robotic Systems, 2019
With the networking of four Global Navigation Satellite Systems, the combination of multi-constellation applications has become an inevitable trend, and there will be more and more visible satellites that can be participated in ship positioning. However,
Pengfei Zhang
doaj   +1 more source

The Impact of Inter-Modulation Components on Interferometric GNSS-Reflectometry [PDF]

, 2016
The interferometric Global Navigation Satellite System Reflectometry (iGNSS-R) exploits the full spectrum of the transmitted GNSS signal to improve the ranging performance for sea surface height applications.
Cardellach, Estel, Fabra Cervellera, Fran, Li, Weiqiang, Martín-Neira, Manuel, Ribó, Serni, Rius, Antonio, Yang, Dongkai   +6 more
core   +2 more sources

The Development of a Low Power GNSS System, as Part of a Drone Assisted Environmental Sensor Network for a Glacial Environment

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract We show the development of an innovative Internet of Things Real Time Kinematic Global Navigation Satellite System, to study the short‐term changes in surface velocity of two adjacent Icelandic glaciers, in order to understand the response of glaciers to climate change.
K. Martinez, S. Attia, G. Bragg, A. Andrews, N. R. Baurley, J. K. Hart   +5 more
wiley   +1 more source

The use of PSD analysis on BeiDou and GPS 10Hz dynamic data for change detection [PDF]

, 2016
This paper examines the use of GPS and BeiDou data to measure the movements of two oscillating platforms in a series of field experiments. Data were gathered from a variety of GNSS receivers at a rate of 10Hz, and processed in an on the fly manner ...
Chen, Gethin Wyn Roberts, Hofmann-Wellenhof, Jin, Lovse, Meng, Nadarajah, Ogundipe, Psimoulis, Psimoulis, Rizos, Roberts, Roberts, Roberts, Roberts, Takasu, Teague, Tu, Tu, Vaclavovic, Verhagen, Xiao, Xu, Xu, Xu Tang, Çelebi   +25 more
core   +1 more source

A Window‐Augmented Machine Learning Approach for Direct GNSS Precipitable Water Vapor Retrieval

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract Global Navigation Satellite Systems (GNSS) provide an effective means for remote sensing of precipitable water vapor (PWV). However, conventional GNSS‐based PWV retrieval approaches rely heavily on auxiliary meteorological parameters, which are frequently unavailable in real time, while most direct retrieval methods use station data aggregated
Zhouao Zheng, Haoyu Wang, Liangke Huang, Ziwei Li, Haojun Li, Hongxing Zhang, Junyu Li, Lilong Liu   +7 more
wiley   +1 more source

Sea target detection using spaceborne GNSS-R delay-doppler maps: theory and experimental proof of concept using TDS-1 data [PDF]

, 2017
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Camps Carmona, Adriano José, Di Simone, Alessio, Hyuk, Park, Riccio, Daniele   +3 more
core   +2 more sources

The Generating Mechanism and Suppression Measure of the ‘Wheel‐Rail’ Rolling Arc for Electrified Trains

High Voltage, Volume 11, Issue 2, Page 370-384, April 2026.
ABSTRACT As the ‘main blood vessel’ of the traction power supply system for high‐speed trains, the ‘wheel‐rail’ coupling grounding reflux system provides the vital channel to send traction current back to terrestrial substations; meanwhile, the rail track also plays a role in transmitting the train's occupancy signal to the control system. An insulated
Jiefu Hou, Song Xiao, Mengqiao Wang, Pupu Li, Guangning Wu, Ye Cao, Guoqiang Gao, Yujun Guo, Xueqin Zhang, Yongdong He   +9 more
wiley   +1 more source

KAUSTSat: Saudi Arabia's First Hyperspectral CubeSat Mission for Earth Observation

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Developed by the King Abdullah University of Science and Technology (KAUST) to support research in atmospheric science and remote sensing, KAUSTSat represented Saudi Arabia's (and the Middle East's) first research‐focused hyperspectral CubeSat mission for Earth observation.
Victor Angulo, Dario Scilla, Jorge L. Rodriguez, Naif Alsalem, Kasper Johansen, Matthew F. McCabe   +5 more
wiley   +1 more source