Results 41 to 50 of about 97,722 (273)

Observable-specific phase biases of Wuhan multi-GNSS experiment analysis center’s rapid satellite products

open access: yesSatellite Navigation, 2022
Precise Point Positioning (PPP) with Ambiguity Resolution (AR) is an important high-precision positioning technique that is gaining popularity in geodetic and geophysical applications. The implementation of PPP-AR requires precise products such as orbits,
Jianghui Geng   +4 more
doaj   +1 more source

Remote sensing and its applications using GNSS reflected signals: advances and prospects

open access: yesSatellite Navigation
The Global Navigation Satellite Systems (GNSS), including the US’s GPS, China’s BDS, the European Union’s Galileo, and Russia’s GLONASS, offer real-time, all-weather, any-time, anywhere and high precision observations by transmitting L band signals ...
Shuanggen Jin   +13 more
semanticscholar   +1 more source

Feasibility Analysis of the Performance of Low-Cost Gnss Receivers in Monitoring Dynamic Motion

open access: yesSocial Science Research Network, 2022
The development of low-cost GNSS receivers broadens their applications, such as deformation monitoring, which have been performed routinely by survey-grade GNSS receivers.
Chen Xue, P. Psimoulis, Xiaolin Meng
semanticscholar   +1 more source

Estimation and evaluation of COSMIC radio occultation excess phase using undifferenced measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
In the GPS radio occultation technique, the atmospheric excess phase (AEP) can be used to derive the refractivity, which is an important quantity in numerical weather prediction.
P. Xia, S. Ye, K. Jiang, D. Chen
doaj   +1 more source

GPS + BDS Network Real-Time Differential Positioning Using a Position Domain Estimation Method

open access: yesRemote Sensing, 2019
The network real-time differential positioning technique is a good choice for meter and sub-meter level’s navigation. More attention has been paid to the Global Positioning System (GPS) and GPS + GLONASS (GLObal NAvigation Satellite System) network
Jianhui Cui   +8 more
doaj   +1 more source

Real-Time Estimation of Low Earth Orbit (LEO) Satellite Clock Based on Ground Tracking Stations

open access: yesRemote Sensing, 2020
The rapid movement of low Earth orbit (LEO) satellite can improve geometric diversity, which contributes to the rapid convergence of Global Navigation Satellite System (GNSS) precise point positioning (PPP). However, the LEO onboard receiver clock cannot
Zhixin Yang   +7 more
doaj   +1 more source

Assessment of Multi-Frequency PPP Ambiguity Resolution Using Galileo and BeiDou-3 Signals

open access: yesRemote Sensing, 2021
From network RTK to PPP-RTK, it is highly expected that high-precision positioning within a few minutes can be achieved with a sparse reference network.
Jiang Guo   +3 more
doaj   +1 more source

2D Semantic Segmentation: Recent Developments and Future Directions

open access: yesFuture Internet, 2023
Semantic segmentation is a critical task in computer vision that aims to assign each pixel in an image a corresponding label on the basis of its semantic content.
Yu Guo   +3 more
doaj   +1 more source

Exploration of Multi-Mission Spaceborne GNSS-R Raw IF Data Sets: Processing, Data Products and Potential Applications

open access: yesRemote Sensing, 2022
Earth reflected Global Navigation Satellite System (GNSS) signals can be received by dedicated orbital receivers for remote sensing and Earth observation (EO) purposes. Different spaceborne missions have been launched during the past years, most of which
Weiqiang Li   +4 more
semanticscholar   +1 more source

Impacts of inter-satellite links on the ECOM model performance for BDS-3 MEO satellites

open access: yesSatellite Navigation
Inter-satellite link (ISL) plays an essential role in current and future Global Navigation Satellite System (GNSS). In this study, we investigate the impact of ISL observations on precise orbit determination for BeiDou-3 Navigation Satellite System (BDS ...
Chao Yang   +4 more
doaj   +1 more source

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