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Continuous time and frequency transfer using robust GPS PPP integer ambiguity resolution method
GPS precise point positioning (PPP) technique has been widely used in time and frequency transfer. The performance of PPP can be improved if the...
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Undifferenced 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,...
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Application of an optical fiber-based system for mass movement monitoring
This paper assesses the stages and findings of a mass movement monitoring system developed for continuous long-term monitoring applications using...
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On 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...
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Sub-10–16 accuracy GNSS frequency transfer with IPPP
Precise point positioning (PPP) using dual-frequency GNSS code and phase measurements has been the technique of choice for time and frequency...
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Optical crosslinks and satellite synchronization for GNSS, communications, and beyond
Traditional intersatellite communications for shared timing information rely on microwave transceivers such as those in Milstar, AEHF, and Iridium...
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Applications of fiber optic sensors in traffic monitoring: a review
Instrumenting pavement with fiber optic sensors has recently gained popularity as a part of the digital infrastructure transformation. In this...
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Application of Brillouin Optical Time Domain Reflection Technology for Monitoring Deformation and Failure of the Coal Seam Floor Rock Mass in Deep Underground Mines
Almost all of the coalfields in East China are now mining deep seams. Accurate prediction of the damage to floor rock during mining is key to...
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Formulation of Determining the Gravity Potential Difference Using Ultra-High Precise Clocks via Optical Fiber Frequency Transfer Technique
Based on gravity frequency shift effect predicted by general relativity theory, this study discusses an approach for determining the gravity...
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Optical clock technologies for global navigation satellite systems
Future generations of global navigation satellite systems (GNSSs) can benefit from optical technologies. Especially optical clocks could back-up or...
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Measuring the Full-Field Strain Response of Uniaxial Compression Test Specimens Using Distributed Fiber Optic Sensing
The uniaxial compressive strength (UCS) test is crucial in determining the strength and stiffness behavior of intact rock and is frequently utilized...
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A study on the application of the distributed optical fiber sensing monitoring technology in the process of dismantling temporary tunnel shoring
Temporary shorings are necessary for the stabilization of the tunnels with large cross-sections that are excavated using the New Austrian tunnelling...
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Quantum-secured time transfer between precise timing facilities: a field trial with simulated satellite links
Global Navigation Satellite Systems (GNSSs), such as GPS and Galileo, provide precise time and space coordinates globally and constitute part of the...
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Mass Transfer of Base Metals in Upward Penetration of Solutions in Tailing Dumps
AbstractThe article describes the studies into the process of upward mass transfer in flotation tailings with water solutions. The swift-flowing...
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Exploring potential applications of optical lattice clocks in a plate subduction zone
Optical clocks improved the accuracy of state-of-the-art cesium clocks by more than two orders of magnitude and enabled frequency comparison with a...
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COMPASSO mission and its iodine clock: outline of the clock design
One of the limiting factors for GNSS geolocation capabilities is the clock technology deployed on the satellites and the knowledge of the satellite...
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Characterizing the deep pum**-induced subsidence against metro tunnel using vertically distributed fiber-optic sensing
Continuous pum** of groundwater will induce uneven ground settlement, which may adversely affect the nearby metro tunnels. In this paper, taking...
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Microseismic Event Recognition and Transfer Learning Based on Convolutional Neural Network and Attention Mechanisms
Microseismic monitoring technology is widely used in tunnel and coal mine safety production. For signals generated by ultra-weak microseismic events,...
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Novel Transfer Learning Framework for Microseismic Event Recognition Between Multiple Monitoring Projects
Deep neural networks have achieved great success in microseismic event recognition tasks in rock engineering. However, a well-trained model on one...
