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Minimum-entropy velocity estimation from GPS position time series
We propose a nonparametric minimum entropy method for estimating an optimal velocity from position time series, which may contain unknown noise, data...
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A real-time accuracy prediction model on time-relative positioning method considering the correlation of position increment errors
Time-relative positioning (TRP), a global navigation satellite system (GNSS) dead reckoning method with low-cost and highly autonomous...
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The research and implementation of velocity analysis methods for reverse time migration angle-gather
Reverse time migration can improve the imaging quality of complex medium evidently, compared with other imaging methods, but it requires higher...
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Anatomy of the spatiotemporally correlated noise in GNSS station position time series
Global Navigation Satellite Systems (GNSS) enable the determination of station displacements, which are essential to understanding geophysical...
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Temporal spectrum of spatial correlations between GNSS station position time series
The background noise in Global Navigation Satellite Systems (GNSS) station position time series is known to be both temporally and spatially...
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jrfapp: A Python Package for Joint Inversion of Apparent S-Wave Velocity and Receiver Function Time Series
Receiver function (RF) inversion is a well-established method to quantify a horizontally layered approximation of the S-wave velocity structure...
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Precise time-depth conversion of coal measure strata based on velocity splicing: a case application in Qinshui basin
Transforming seismic data from the time domain to the depth domain is a very important step when using 3D seismic exploration to guide the...
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Triangulation of the Earth’s surface and its application to the geodetic velocity field modelling
The Earth’s crust is exposed by tectonic processes and is not static over time. Modelling of the Earth’s surface velocities is of utmost importance...
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Develo** a Consistent Travel-Time Framework for Comparing Three-Dimensional Velocity Models for Seismic Location Accuracy
Location algorithms have historically relied on simple, one-dimensional (1D) velocity models for fast seismic event locations. 1D models are...
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GPS data analysis and geodetic velocity field investigation in Greece, 2001–2016
In this study, an updated crustal velocity field for the Greece area was estimated using a time series analysis that covers a duration of 16 years...
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Shear-wave velocity models in and around north-east India by modelling Rayleigh wave group velocity dispersion data
Rayleigh wave group velocity dispersion data of moderate magnitude (Mw 5.4) earthquake of Assam, North-East (NE) India, is used to retrieve regional...
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The Generalized Method of Wavelet Moments with eXogenous inputs: a fast approach for the analysis of GNSS position time series
The global navigation satellite system (GNSS) daily position time series are often described as the sum of stochastic processes and geophysical...
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Inversion procedure for velocity analysis using spectral recomposition
We propose a velocity analysis procedure using the signal parameters estimated through spectral recomposition of spectra in seismic traces. This...
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Velocity estimation of thunderstorm movement and dealiasing of single Doppler radar during convective events
The use of meteorological radars in monitoring current weather conditions is crucial regarding the observation of the evolution and dissipation of...
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Joint Inversion of AE/MS Sources and Velocity with Full Measurements and Residual Estimation
Due to the influence of the errors of time difference of arrivals (TDOA) and the premeasured velocity in the propagation medium, the existing methods...
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Predicting velocity and turbulent kinetic energy inside an emergent Phragmites australis canopy with real morphology
Natural plants have different morphologies, which may impact the velocity and turbulence structures inside the canopy interior. Laboratory...
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Segregation of a thermochemical anomaly and coalescence with a large low-velocity province
Thermochemical anomalies on the core–mantle boundary, including the Africa and Pacific large low-velocity provinces, exert a first-order control on...
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Numerical Simulation and Parametric Analysis of Ultrasonic Velocity Test in Fractured Rock Based on the Discrete Element Method
Ultrasonic pulse velocity (UPV) test is widely used to evaluate rock mass integrity. However, it is rather difficult to conduct a sampling of...
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Three-dimensional turbulent velocity field and air entrainment of the 22 March 1944 Vesuvius eruption plume
Turbulent air entrainment into explosive volcanic jets determines whether an eruption will produce buoyant plumes, pyroclastic density currents, or...
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GNSS direct position estimation-inspired positioning with pseudorange correlogram for urban navigation
Multipath (MP) reception has been among the main issues for accurate and reliable positioning in urban environments. It has been shown to introduce...
