Results 21 to 30 of about 5,594 (226)

An Optimal Tropospheric Tomography Method Based on the Multi-GNSS Observations

Remote Sensing, 2018
Aside from the well-known applications (positioning, navigation and timing) brought by Global Navigation Satellite System (GNSS), reconstruction of tropospheric atmosphere distribution information using tomography technique based on the multi-GNSS ...
Qingzhi Zhao, Yibin Yao, Xinyun Cao, Feng Zhou, Pengfei Xia   +4 more
doaj   +1 more source

A Multi-GNSS Software Receiver

, 2022
Build and operate multi-GNSS and multi-frequency receivers with state-of-the-art techniques using this up-to-date, thorough and easy-to-follow text. Covering both theory and practice and complemented by MATLAB© code and digital samples with which to test it, this package is a powerful learning tool for students, engineers and researchers everywhere ...
Söderholm, Stefan, Bhuiyan, M. Zahidul H., Ferrara, Giorgia, Thombre, Sarang, Kuusniemi, Heidi   +5 more
openaire   +2 more sources

Performance Assessment of Positioning Based on Multi-Frequency Multi-GNSS Observations: Signal Quality, PPP and Baseline Solution

IEEE Access, 2021
With the advances and modernization of GPS, GLONASS, BDS, Galileo and QZSS, multi-frequency and multi-system joint positioning has become the mainstream positioning and navigation.
Jinwei Bu, Kegen Yu, Nijia Qian, Xiaoqing Zuo, Jun Chang   +4 more
doaj   +1 more source

Real-Time Tropospheric Delay Retrieval from Multi-GNSS PPP Ambiguity Resolution: Validation with Final Troposphere Products and a Numerical Weather Model

Remote Sensing, 2018
The multiple global navigation satellite systems (multi-GNSS) bring great opportunity for the real-time retrieval of high-quality zenith tropospheric delay (ZTD), which is a critical quality for atmospheric science and geodetic applications.
Cuixian Lu, Xin Li, Junlong Cheng, Galina Dick, Maorong Ge, Jens Wickert, Harald Schuh   +6 more
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Mitigation of Unmodeled Error to Improve the Accuracy of Multi-GNSS PPP for Crustal Deformation Monitoring

Remote Sensing, 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.
Kai Zheng, Xiaohong Zhang, Xingxing Li, Pan Li, Xiao Chang, Jizhang Sang, Maorong Ge, Harald Schuh   +7 more
doaj   +1 more source

Integrated Precise Orbit Determination of Multi-GNSS and Large LEO Constellations

Remote Sensing, 2019
Global navigation satellite system (GNSS) orbits are traditionally determined by observation data of ground stations, which usually need even global distribution to ensure adequate observation geometry strength.
Xingxing Li, Keke Zhang, Fujian Ma, Wei Zhang, Qian Zhang, Yujie Qin, Hongmin Zhang, Yansong Meng, Lang Bian   +8 more
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Review of Bridge Structural Health Monitoring Based on GNSS: From Displacement Monitoring to Dynamic Characteristic Identification

IEEE Access, 2021
Deformation monitoring and dynamic characteristic analysis of bridge structures are the vital and basic requirements for the safe operation of bridges.
Xinpeng Wang, Qingzhi Zhao, Ruijie Xi, Chenfeng Li, Guanqing Li, Ling'Ai Li   +5 more
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Characterization of multi-scale ionospheric irregularities using ground-based and space-based GNSS observations

Satellite Navigation, 2021
Ionospheric irregularities can adversely affect the performance of Global Navigation Satellite System (GNSS). However, this opens the possibility of using GNSS as an effective ionospheric remote sensing tool.
YuXiang Peng, Wayne A Scales, Michael D Hartinger, Zhonghua Xu, Shane Coyle   +4 more
doaj   +1 more source

Investigation of Tightly Combined Single-Frequency and Single-Epoch Precise Positioning Using Multi-GNSS Data

Remote Sensing, 2020
The loose combination (LC) and the tight combination (TC) are two different models in the combined processing of four global navigation satellite systems (GNSSs).
Chenlong Deng, Qian Liu, Xuan Zou, Weiming Tang, Jianhui Cui, Yawei Wang, Chi Guo   +6 more
doaj   +1 more source

MULTI-GNSS PPP: An Alternative Positioning Technique for Establishing Ground Control Points

International Journal of Environment and Geoinformatics, 2020
Traditionally, ground control points (GCPs) are utilized to determine absolute image orientations indirectly in aerial triangulation. For a long time, differential and relative GNSS (Global Navigation Satellite System) positioning techniques have been ...
Berkay Bahadur, Metin Nohutçu
doaj   +1 more source