Results 71 to 80 of about 888 (172)

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

An Ambient Adaptive Global Navigation Satellite System Total Electron Content Predictive Model for Short-Term Rapid Geomagnetic Storm Events

Remote Sensing
Satellite navigation is an essential component of the national infrastructure. Space weather and ionospheric conditions are the prime sources of GNSS (global navigation satellite system) positioning, navigation, and timing (PNT) service disruptions and ...
Renato Filjar, Ivan Heđi, Jasna Prpić-Oršić, Teodor Iliev   +3 more
doaj   +1 more source

UAV-Based Airport Lights Inspection Without GNSS Positioning Support

Remote Sensing
The inspection of PAPI (precision approach path indicator), ALS (approach light system), and runway lights is the basis of maintenance actions that safeguard the safety of airport operations.
Wiesław Pamuła, Teresa Pamuła, Tomasz Stenzel, Maciej Sajkowski, Adam Rytter, Daria Żuchowska   +5 more
doaj   +1 more source

LEO constellation-augmented multi-GNSS for rapid PPP convergence

Journal of Geodesy, 2018
The fast motion of low earth orbit (LEO) satellite contributes to the geometric diversity, allowing for rapid convergence of precise point positioning (PPP). In this contribution, we investigate the PPP performance of the LEO constellation-augmented full operational capability (FOC) multi-GNSS.
Xingxing Li, Fujian Ma, Xin Li, Hongbo Lv, Lang Bian, Zihao Jiang, Xiaohong Zhang   +6 more
openaire   +4 more sources

Performance of PPP and PPP-RTK with new-generation GNSS constellations and signals

Satellite Navigation
The expansion of Global Navigation Satellite Systems (GNSS) and Regional Navigation Satellite Systems (RNSS), along with broadcasting of additional signals, offers more options for Precise Point Positioning (PPP). Utilizing a number of constellations and
Xiaohong Zhang, Yuhang Yang, Haochen Yang, Xiaodong Ren, Xiaojing Lin, Xuan Le, Xin Li   +6 more
doaj   +1 more source

Geodetic Altitude from Barometer and Weather Data for GNSS Integrity Monitoring in Aviation

Navigation
Vertical navigation is crucial for safe aircraft separation and has been traditionally based on the pressure altitude provided by barometric altimeters.
Maximilian Simonetti, Omar García Crespillo   +1 more
doaj   +1 more source

A Performance Study on the Combination of Available GNSS and Potential LEO-PNT Constellations

IEEE Access
With the reduction in the launch and manufacturing costs of satellites, there has been a surge of interest in Low-Earth Orbit (LEO) satellites from both the industrial and academic sectors in recent years.
Kaan Celikbilek, Elena Simona Lohan
doaj   +1 more source

UAV Positioning Using GNSS: A Review of the Current Status

Drones
Accurate and robust positioning is a critical enabler for Unmanned Aerial Vehicle (UAV) applications, ranging from mapping and inspection to emerging Urban Air Mobility (UAM).
Chaopei Jiang, Xingyu Zhou, Hua Chen, Tianjun Liu   +3 more
doaj   +1 more source

Code-Based Differential GNSS Ranging for Lunar Orbiters: Theoretical Review and Application to the NaviMoon Observables

Remote Sensing
In the near future, international space agencies have planned to achieve significant milestones in investigating the utilization of Global Navigation Satellite Systems (GNSS) within and beyond the current space service volume up to their application to ...
Anaïs Delépaut, Alex Minetto, Fabio Dovis   +2 more
doaj   +1 more source

MONITORING OF THE EUROPEAN WIDE AREA GNSS-1 THE NAVIGATION APPLICATION OF CIVIL AVIATION

Perner’s Contacts, 2011
In the paper, the overview of the conducted observation and experimental test evaluation model of the European satellite augmentation service for navigation application in air traffic is summarized after an extensive review of the EGNOS civil aviation ...
Pavel Ptáček
doaj