A Three-Dimensional Inversion Method for Small-Scale Magnetic Objects Based on Normalized Magnetic Source Strength [PDF]
Micromachines, 2022 The exploration of some dangerous or important small-scale magnetic objects requires accurate three-dimensional inversion results. In this paper, a three-dimensional inversion method for small-scale magnetic objects is proposed.
Ziming Cai +4 more
doaj +2 more sources
Inversion Method for Transformer Winding Hot Spot Temperature Based on Gated Recurrent Unit and Self-Attention and Temperature Lag [PDF]
SensorsThe hot spot temperature of transformer windings is an important indicator for measuring insulation performance, and its accurate inversion is crucial to ensure the timely and accurate fault prediction of transformers.
Yuefeng Hao +4 more
doaj +2 more sources
Improved hydrogeophysical characterization using joint inversion of cross-hole electrical resistance and ground-penetrating radar traveltime data. [PDF]
, 2006 Appropriate regularizations of geophysical inverse problems and joint inversion of different data types improve geophysical models and increase their usefulness in hydrogeological studies.
Revil, Andre +4 more
core +5 more sources
The accurate numerical inversion of laplace transforms [PDF]
, 1976 Inversion of almost arbitrary Laplace transforms is effected by trapezoidal integration along a special contour. The number n of points to be used is one of several parameters, in most cases yielding absolute errors of order 10-7 for n = 10, 10-11 for n
Tablot, A
core +6 more sources
Seismic Lg-wave attenuation tomography: Method, algorithm, data processing flow and application
地球与行星物理论评, 2022 With the rapid development of modern seismic network, seismological signals can be digitally recorded in broad frequency band, larger dynamic range, and higher spatial density, which provide the possibility of obtaining fine structures of the quality ...
Lianfeng Zhao +5 more
doaj +1 more source
Image source detection for geoacoustic inversion by Teager-Kaiser energy operator [PDF]
, 2014 This letter presents an improvement of the image source method (ISM) for geoacoustic inversion. The new algorithm is based on the Teager-Kaiser Energy Operator which ampli es the discontinuities in signals while the soft transitions are reduced.
DRIRA, Achraf +5 more
core +1 more source
AC-IBFGS-Based Inversion Method for Estimating the Quasi-Viscoelastic Parameters of Arch Dams
IEEE Access, 2022 This article investigates an inverse problem for variable physical and mechanical comprehensive parameters. A back analysis method based on an improved BFGS (Broyden-Fletcher-Goldfarb Shanno-Newtonian iteration) and AC (adjustment coefficient) is ...
Hao Gu +3 more
doaj +1 more source
Multi-field coupling analysis of water-heat-salt in composite unsaturated soils
Yantu gongcheng xuebao, 2022 The multi-field coupling problem of water, heat and salt in the composite unsaturated soils composed of unsaturated clay and unsaturated sand is studied. Based on the mass and energy conservation equations for porous media, the temperature, pore pressure,
GAO Guo-yao 1, GUO Wei 1, ZHOU Feng-xi 2
doaj +1 more source
Remote Sensing, 2020 Integrated-path differential absorption (IPDA) LiDAR is a promising means of measuring the global distributions of the column weighted xCO2 (dry-air mixing ratio of CO2) with adequate accuracy and precision.
Ge Han +6 more
doaj +1 more source
Data-driven acoustic impedance inversion with reweighted L1 norm sparsity constraint
Frontiers in Earth Science, 2023 Acoustic impedance (AI) inversion is widely used in geophysics and reservoir prediction. But the traditional impedance inversion method cannot fully exploit the sparse characteristics of geological attributes. There are problems with multiplicity and low
Lian Zhao +7 more
doaj +1 more source