A5049374863- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Indoor and Outdoor Localization Technologies
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geological Modeling and Analysis
- Ionosphere and magnetosphere dynamics
- Underwater Acoustics Research
- Geophysics and Sensor Technology
- Soil Moisture and Remote Sensing
- Underwater Vehicles and Communication Systems
- Speech and Audio Processing
- Inertial Sensor and Navigation
- Ultrasonics and Acoustic Wave Propagation
- Earthquake Detection and Analysis
Southern University of Science and Technology
2023-2024
Harbin Engineering University
2021-2022
University of Science and Technology of China
2021
Accurate prediction of broadband ground motion parameters is important for earthquake disaster prevention and mitigation. Due to lack high wavenumber components the source rupture process velocity models, physics-Based simulation methods can only produce reliably low-frequency motions (
Theoretically, five-frequency observations can form combined with longer wavelength, smaller ionospheric delay and noise, which may improve the performance of cycle slip detection repair. Four geometry-free phase combinations one pseudorange combination are formed to detect repair slips in real time. Firstly, high-quality three, four five frequencies discussed, then optimal selected slips. Secondly, is linearly independent above added ensure that all be detected. Thirdly, a real-time...
Abstract When the global navigation satellite system (GNSS) is used for positioning in harsh environments with high occlusion and strong reflection, signals are easily reflected, diffracted, or even blocked, which can lead to multipath non-line-of-sight (NLOS) errors. Existing stochastic models do not fully consider significant unmodeled errors, such as NLOS, specific scenarios canyons. This paper systematically establishes carrier-to-noise ratio (C/N 0 ) template functions of low-cost...
Abstract Reverse time migration (RTM) based on two-way wave equation is an important imaging tool, which has been widely used in exploration geophysics. It offers distinct advantages handling complex geological structures. Moreover, elastic reverse (ERTM) can produce more physically meaningful images for subsurface and received increasing attention recent years. However, rugged topography presents challenges the reconstruction of structures ERTM. To overcome this problem, we introduce grid...
SUMMARY The Gonghe Basin in the northeast Tibetan Plateau presents significant potential for hot dry rock (HDR) geothermal resources. A 1990 Mw 6.4 earthquake basin furthers need an improved understanding of its sedimentary structure. In this study, we utilize data from a dense seismic array 88 short-period seismometers deployed at interstation spacing approximately 3 km to scrutinize structure Basin. By analysing teleseismic P waveforms, identify P-to-S converted waves (Ps wave) originating...
We have developed an overset-grid algorithm to simplify the difficulty of curvilinear grid (CG) generation and increase computational efficiency for seismic wavefield modeling by using finite-difference method in areas with complex surface topography. The overset comprises a Cartesian block approximately orthogonal CG block. covers most simulation domain, whereas discretizes near-surface overlap each other arbitrarily. use sixth-order explicit Lagrangian interpolation exchange data between...
Abstract The computation of traveltimes for compressional (P) waves is significantly important earthquake and seismic exploration applications. eikonal equation, functioning as a fundamental tool in wave propagation analysis, plays crucial role the construction images. However, inherent nonlinearity equation introduces complexity, particularly when addressing anisotropic media. derived directly from Christoffel applicable general traveltime calculations. its complex quartic presenting...
The integrated navigation system with an ultra-short baseline (USBL) acoustic positioning effectively suppresses error divergence in the strap down inertial (SINS). However, communication delay, and measurement outliers caused by sophisticated polar underwater environment significantly challenge SINS/USBL system. Hence, Student's t-based delay Kalman filter (RstDKF) is proposed to relieve influence of on system, numerical simulations are conducted verify its effectiveness. results...