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An optimal linear combination model to accelerate PPP convergence using multi-frequency multi-GNSS measurements
We propose an optimal ionospheric-free linear combination (LC) model for dual- and triple-frequency PPP which can accelerate carrier phase ambiguity...
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Three-frequency BDS precise point positioning ambiguity resolution based on raw observables
All BeiDou navigation satellite system (BDS) satellites are transmitting signals on three frequencies, which brings new opportunity and challenges...
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On the satellite clock datum stability of RT-PPP product and its application in one-way timing and time synchronization
In real-time precise point positioning (RT-PPP), PPP one-way timing is used to steer local oscillators, but the timing performance could be...
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Random walk multipath method for Galileo real-time phase multipath mitigation
Since the orbit repeat cycle of Galileo satellites is about 10 days, existing spatial–temporal repeatability-based station multipath mitigation...
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Precise orbit determination for the Haiyang-2D satellite using new onboard BDS-3 B1C/B2a signal measurements
The GNSS receiver onboard the Haiyang-2D (HY-2D) China Ocean satellite tracks the new B1C and B2a signals of BDS-3 to orbit determination. This study...
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Estimation of GPS-observed ocean tide loading displacements with an improved harmonic analysis in the northwest European shelf
Global Positioning System technique has been widely used to estimate ocean tide loading displacements, but classical harmonic analysis with satellite...
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Beyond three frequencies: an extendable model for single-epoch decimeter-level point positioning by exploiting Galileo and BeiDou-3 signals
GNSS is indispensable to self-driving vehicles by delivering decimeter-level or better absolute positioning solutions. Such a high precision normally...
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A Review of the paleoclimatic Studies from Lake Sediments of Schirmacher Oasis, East Antarctica
Paleoclimate of Antarctica has remained a prime subject of study throughout the past half of the last century to understand the global perspective of...
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Assessment of PPP integer ambiguity resolution using GPS, GLONASS and BeiDou (IGSO, MEO) constellations
Although integer ambiguity resolution (IAR) can improve positioning accuracy considerably and shorten the convergence time of precise point...
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A new method for fault identification in real-time integrity monitoring of autonomous vehicles positioning using PPP-RTK
Autonomous vehicles require a real-time positioning system with in-lane accuracy. They also require an autonomous onboard integrity monitoring (IM)...
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Satellite laser ranging to GNSS-based Swarm orbits with handling of systematic errors
Satellite laser ranging (SLR) retroreflectors along with GNSS receivers are installed onboard numerous active low earth orbiters (LEOs) for the...
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Track-to-Track Ambiguity Resolution for Zero-Differences—Integer Phase Clocks
In this section we introduce a novel approach for GNSS ambiguity resolution at the zero-difference level, what we call Track-to-Track (T2T) ambiguity...
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Code multipath error extraction based on the wavelet and empirical mode decomposition for Android smart devices
The multipath effect inhibits the centimeter-accuracy positioning in Android smart devices which have poor multipath suppression. We investigate the...
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Parallel computation of regional CORS network corrections based on ionospheric-free PPP
Global navigation satellite system real-time processing requires low latency, high timeliness, and high computational efficiency. A typical...
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Multi-GNSS phase delay estimation and PPP ambiguity resolution: GPS, BDS, GLONASS, Galileo
This paper focuses on the precise point positioning (PPP) ambiguity resolution (AR) using the observations acquired from four systems: GPS, BDS,...
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Rapid PPP ambiguity resolution using GPS+GLONASS observations
Integer ambiguity resolution (IAR) in precise point positioning (PPP) using GPS observations has been well studied. The main challenge remaining is...
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A systematic analysis of retrofitting tools in the residential buildings to improve the energy performances by using the STAAD Pro Software
The present building retrofits have huge prospects for reducing global energy consumption and greenhouse gas emission. Consequently, it is regarded...
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Toward Real-time Geodetic Monitoring of Landslides with GNSS Mass-market Devices
The use of GNSS for landslide monitoring is not a novelty. In most cases, the GNSS receivers and antennas are only a subset of instruments usually...
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Precise regional L5 positioning with IRNSS and QZSS: stand-alone and combined
In this contribution we analyze the single-frequency L5 positioning capabilities of the two regional satellite navigation systems IRNSS and QZSS,...
