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Article
Reveal the lost entanglement for accelerated atoms in the high-dimensional spacetime
When atoms are accelerated in the vacuum, entanglement among atoms will degrade compared with the initial situation before the acceleration. In this study, we propose a novel and interesting view that the lost...
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Article
Extension of the undifferenced and uncombined CDMA PPP-RTK for not-common-frequency GNSS observations
Integer ambiguity resolution enabled precise point positioning, PPP-RTK, which is becoming one of the most popular global navigation satellite system (GNSS) positioning modes. Owing to the presence of rank def...
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Article
The Coupled Band Gap of the Double Panel with Periodic Attached Spring-Mass Structure
To further promote the application of band gap theory on large structures, the coupled band gap constructed by the double panel structure is innovatively proposed and studied in this paper.
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Article
A comparison of two PPP-RTK models: S-basis choice, network product precision, and user positioning performance
PPP-RTK combines the advantages of both precise point positioning (PPP) and real-time kinematic (RTK) techniques. While constructing PPP-RTK models based on undifferenced and uncombined observations offers app...
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Article
Optimizing ZWD estimation strategies for enhanced PPP-RTK performance
Precise Point Positioning-Real Time Kinematic (PPP-RTK), a synthesis of PPP and RTK techniques, is a highly precise positioning technique that has been extensively studied in the GNSS community. The Zenith Wet...
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Article
Open AccessImproving GNSS PPP-RTK through global forecast system zenith wet delay augmentation
The precise point positioning real-time kinematic (PPP-RTK) is a high-precision global navigation satellite system (GNSS) positioning technique that combines the advantages of wide-area coverage in precise poi...
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Article
Homogeneous PPP–RTK user positioning performance as a consequence of network integer ambiguity resolution
PPP–RTK, a synthesis of precise point positioning (PPP) and real-time kinematic (RTK) techniques, achieves fast integer ambiguity resolution-enabled positioning using, among others, satellite clocks, biases, a...
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Article
Multi-Objective Optimal Design of the Wind-Wave Hybrid Platform with the Coupling Interaction
An offshore wind-wave hybrid platform could consistently and cost-effectively supply renewable power. A multi-objective optimization process is proposed for a hybrid platform with hydrodynamic coupling interac...
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Article
Hong Kong–Zhuhai–Macao Bridge deformation monitoring using PPP-RTK with multipath correction method
The present study provides a suitable GNSS positioning model for long-span bridge deformation monitoring and further improves the GNSS positioning performance using the multipath mitigation technique. An ambig...
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Article
Decentralized GNSS PPP-RTK
PPP-RTK, known as integer ambiguity resolution-enabled precise point positioning, requires precise satellite-related products and atmospheric corrections estimated in a global navigation satellite system (GNSS...
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Article
An ionospheric scintillation index derived from dual-frequency Doppler measurements released by geodetic GNSS receivers operating at 1 Hz
Doppler measurements are immune to cycle slips, which offers great potential for constructing the ionospheric scintillation indexes. This study proposes a new scintillation index referred to as Doppler Index ( ...
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Article
Simultaneous estimation of inter-frequency clock biases and clock offsets with triple-frequency GPS data: undifferenced and uncombined methodology and impact analysis
Nowadays, multi-frequency signals have been putting forward good prospects for improving the application performances of the rapid-develo** Global Navigation Satellite Systems (GNSS). Inter-frequency clock b...
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Article
GNSS-RTK model: common-frequency versus mixed-frequency
Global navigation satellite system real-time kinematic (RTK) normally takes advantage of a common-frequency (CF) model, in which, the frequency bands in use are assumed to be the same across all satellites vis...
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Article
Open AccessShielding of Penrose superradiance in optical black holes
We investigate the effect of superradiance shielding for the analogue rotating black holes simulated by optical vortices by calculating the radial motion of massless particles in such spacetime background. We ...
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Article
Generation of entanglement between two laser pulses through gravitational interaction
We investigate entanglement generation between two pulses through the gravitational interaction in the framework of linearized quantum gravity. Different from the earlier suggestions that two massive particles...
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Article
Open AccessUndifferenced and uncombined GNSS time and frequency transfer with integer ambiguity resolution
Precise point positioning (PPP) has been a competitive global navigation satellite system (GNSS) technique for time and frequency transfer. However, the classical PPP is usually based on the ionosphere-free co...
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Article
PPP-RTK: from common-view to all-in-view GNSS networks
Integer ambiguity resolution-enabled precise point positioning (PPP), otherwise known as PPP real-time kinematic (PPP-RTK), recovers the integer nature of ambiguities at a user receiver by delivering the satel...
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Article
Open AccessOn the potential of undifferenced and uncombined GNSS time and frequency transfer with integer ambiguity resolution and satellite clocks estimated
The use of global navigation satellite systems (GNSS) has been a competitive way to provide high-precision and low-cost time and frequency transfer results. However, the traditional GNSS method, the precise po...
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Article
Open AccessEffect of spacetime dimensions on quantum entanglement between two uniformly accelerated atoms
We investigate the entanglement dynamics for a quantum system composed of two uniformly accelerated Unruh-DeWitt detectors in different spacetime dimensions. It is found that the range of parameters in which e...
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Article
Estimation of ionospheric total electron content using GNSS observations derived from a smartphone
The global navigation satellite system (GNSS) measurements to determine ionospheric total electron content (TEC) are mainly derived from expensive geodetic-grade receivers, which are not conducive to high-dens...
