Results 31 to 40 of about 3,477,051 (221)

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

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
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
doaj   +1 more source

GNSS position solutions in Japan

, 2022
This dataset includes solutions processed by ISTerre for all Japanese GNSS stations. These products are daily position time series (North, East and Vertical), in the ITRF14 reference frame, calculated from RINEX files using the double difference method ...
gnss-products
core   +1 more source

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

Autonomous GEO Satellite Navigation with Multiple GNSS Measurements [PDF]

, 2009
The poor satellite visibility and the weak signal power of the Global Positioning System (GPS) signal reception in side lobes are the main constraint on the Geostationary Earth Orbit (GEO) determination, however, the situation will improve when multi ...
Lim, S ; https://orcid.org/, Qiao, L ; https://orcid.org/, Liu, J, Rizos, C ; https://orcid.org/   +3 more
core   +1 more source

Multi-GNSS PPP-RTK: From Large- to Small-Scale Networks. [PDF]

Sensors (Basel), 2018
Precise point positioning (PPP) and its integer ambiguity resolution-enabled variant, PPP-RTK (real-time kinematic), can benefit enormously from the integration of multiple global navigation satellite systems (GNSS).
Nadarajah N, Khodabandeh A, Wang K, Choudhury M, Teunissen PJG.   +4 more
europepmc   +2 more sources

A novel quasi-open loop architecture for GNSS carrier recovery systems [PDF]

, 2012
The problem of designing robust systems to track global navigation satellite system (GNSS) signals in harsh environments has gained high attention. The classical closed loop architectures, such as phase locked loops, have been used for many years for ...
Letizia Lo Presti, Maurizio Fantino, Tahir, Muhammad, Lo Presti, Letizia, Fantino, Maurizio, Muhammad Tahir   +5 more
core   +1 more source

High precision positioning using vehicle trajectories in urban environments (Improvement of RTK-GNSS by optimizing the initial conditions)

Nihon Kikai Gakkai ronbunshu, 2021
This study proposes a method for estimating the positions of vehicles in urban environments with high accuracy. We employ satellite positioning by GNSS for position estimation.
Aoki TAKANOSE, Yoshiki ATSUMI, Kanamu TAKIKAWA, Takuya ARAKAWA, Junichi MEGURO   +4 more
doaj   +1 more source