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Enhanced air-coupled impact echo technique by phase analysis of signals from multiple sensors
This paper presents an air-coupled impact echo (IE) technique that relies on the phase spectrum of the collected data to find the frequencies...
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Vector angle grou**-based solution separation for multipath/NLOS detection and exclusion with the enhancement of doppler test
In urban areas, global navigation satellite system (GNSS) measurements are susceptible to multipath and non-line-of-sight (NLOS) effects,...
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Carrier phase bias correction for GNSS space-time array processing using time-delay data
GNSS signals are so vulnerable that they can be easily jammed by accidental or malicious interference because of the low transmission power of...
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Can the phase of SNR oscillations in GNSS-IR be used to estimate sea-level height?
In existing global navigation satellite system-interference reflectometry (GNSS-IR) research, only the frequency of signal-to-noise ratio (SNR)...
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Mitigating Velocity Errors in Least-Squares Imaging Using Angle-Dependent Forward and Adjoint Gaussian Beam Operators
Compared with traditional adjoint-based migration, least-squares migration (LSM) can reduce finite-frequency effects, remove acquisition footprints...
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Identification of Mixed-Phase Clouds Using Combined CALIPSO Lidar and Imaging Infrared Radiometer Observations
Using the so-called Hu diagram relating layer-integrated depolarization ratio (δv) and layer-integrated attenuated backscatter at 532 nm (γ′532), the...
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Research and Practice of Digital Three-Phase Flowmeter for Complex Oil and Gas Occasion
In the development of oil and gas fields, the accurate measurement of oil, gas and water production rate is the basis for calculating the key...
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Macroscopic and mesoscopic characteristics of liquid-gas two-phase flow in a single fracture
The liquid-gas two-phase flow in rock fractures is of great significance for oil and gas field development, groundwater pollution control and...
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Amplitude and phase approximation at the linear slip interface of two different tilted transversely isotropic media
Besides amplitude variation, phase variation of seismic wave is also an important carrier of geological information at the fault slip interface. To...
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Asymmetries in the ENSO phase space
El Niño Southern Oscillation (ENSO) dynamics are best described by the recharge oscillator model, in which the eastern tropical Pacific sea surface...
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Effect of equilibrium contact angle on water equilibrium film thickness for the carbon dioxide–brine–mineral system based on surface force theory
The thickness of the thin wetting film depends on disjoining pressure forces, and it evolves with pH evolution due to brine acidification at the...
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Buoyancy of slabs and plumes enhanced by curved post-garnet phase boundary
Mantle convection manifests in the subduction of cold slabs and the upwelling of hot plumes, driving both near-surface processes such as volcanism...
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Interface Shapes in Microfluidic Porous Media: Conditions Allowing Steady, Simultaneous Two-Phase Flow
Microfluidic devices offer unique opportunities to directly observe multiphase flow in porous media. However, as a representation of flow in...
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On the relation of GNSS phase center offsets and the terrestrial reference frame scale: a semi-analytical analysis
Phase center offsets (PCOs) of global navigation satellites systems (GNSS) transmit antennas along the boresight axis introduce...
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The effect of potassium on aluminous phase stability in the lower mantle
The aluminous calcium-ferrite type phase (CF) and new aluminous phase (NAL) are thought to hold the excess alumina produced by the decomposition of...
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Anomalous Viscosity, Aggregation, and Non-Ergodic Phase of Laponite® RD in a Water–Methanol Binary Solvent
Study of the behavior of landfill lining materials (clays) in organic solvents is important because, in waste management, lining prevents groundwater...
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Disorientation control on trace element segregation in fluid-affected low-angle boundaries in olivine
The geometry and composition of deformation-related low-angle boundaries in naturally deformed olivine were characterized by electron backscattered...
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Low-cost GNSS antennas in precise positioning: a focus on multipath and antenna phase center models
The rapid growth of the GNSS equipment market has put affordable receivers and antennas capable of receiving satellite signals into the hands of...
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A Thermal–Hydraulic–Mechanical–Chemical Coupling Model for Acid Fracture Propagation Based on a Phase-Field Method
Acid fracturing is a technique to enhance productivity in carbonate formations. In this work, a thermal–hydraulic–mechanical–chemical (THMC) coupling...
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Phase-Field Modelling of Interactions Between Hydraulic Fractures and Natural Fractures
Hydraulic fracturing is a widely used technique applied in unconventional reservoirs to generate large fracture networks. Interactions between...
