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Multi-parameter Microwave Inverse Scattering with Group Sparsity Constraints
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018We present a multi-parameter inverse scattering method with group sparsity constraint, which improves the image reconstruction results in case the images of different parameters have similar shape or structure. In inverse scattering imaging, the system of equations to be solved is often under-determined where the number of measurements is less than the
Guanbo Chen +2 more
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Multi-parameter nonlinear inversion with exact reflection coefficient equation
Journal of Applied Geophysics, 2013Abstract Amplitude variation with amplitude or angle (AVO/AVA) inversion has been widely utilized in exploration geophysics to estimate the formation of elastic parameters underground. However, conventional AVO/AVA inversion approaches are based on different approximate equations of Zoeppritz equations under various hypotheses, such as limited ...
Zhaoyun Zong, Xingyao Yin, Guochen Wu
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On unique solvability of multi-parameter waveguide inverse problems
2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2017This paper provides an introduction to mathematical methods of analytical-numerical solution to multi-parameter waveguide inverse problems of reconstructing permittivity of layered dielectric inclusions from the values of the transmission and reflection coefficients.
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Application of the Multi-Parameter Geostatistical Inversion in the Carbonate Reservoir Prediction
International Petroleum Technology Conference, 2013Abstract Four lithologies were developed in the study area and they were pore-bearing grainstone, compact sparite, shaly limestone and limy mudstone. The pore-bearing grainstone was the main reservoir rock. The characteristic analysis of the electrical and physical properties showed that the acoustic impedance of ...
Cai Qin Liu +7 more
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Migration and multi-parameter inversion in transversely isotropic elastic media
56th EAEG Meeting, 1994Transverse isotropy is a common form of anisotropy encountered in many physical applications. It can be intrinsic to a material or rock type, occurring due to thin layering or also by alignment of pores and fractures due to the stress conditions affecting a medium.
M. Ali, C. Tura
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Borehole-Constrained Multi-Parameter Full Waveform Inversion
Proceedings, 2015We propose a method that can use a-priori information regarding subsurface properties at a few select spatial locations and over a limited depth range to guide FWI towards a better overall solution without the need to form conventional migration images, pick horizons or determine reflector dips.
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A sparse reduced Hessian approximation for multi-parameter wavefield reconstruction inversion
SEG Technical Program Expanded Abstracts 2014, 2014SUMMARY Multi-Parameter full-waveform inversion is a challenging problem, because the unknown parameters appear in the same wave equation and the magnitude of the parameters can vary many orders of magnitude. This makes accurate estimation of multipleparameters very difficult.
Bas Peters, Felix J. Herrmann
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Multi-parameter spectral inversion for GPR signals of subsurface layered media
2012 14th International Conference on Ground Penetrating Radar (GPR), 2012A frequency-domain spectral inversion algorithm is derived and verified in this paper, using which underground reflective surfaces' positions as well as each layer's thickness, dielectric permittivity and electric conductivity can be obtained simultaneously.
Huang Zhonglai, Zhang Jianzhong
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Robust Frequency-domain Multi-parameter Elastic Full Waveform Inversion
72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010Elastic full-waveform inversion is an ill-posed and highly non-linear data-fitting procedure that is sensitive to noise, inaccuracies of the starting model and the definition of multi-parameter classes. In this study, we investigate the performances of different minimisation functionals, such as the least-square norm (L2), the least-absolute-values ...
Brossier, R., Operto, S., Virieux, J.
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Multi-parameter inverse analysis research based on Comsol Multiphysics and Matlab
2010 International Conference On Computer Design and Applications, 2010This paper constructs a parameter inverse analysis model for the diffusion analysis experiments of multi-ion transport model. It transforms multi-parameter inverse analysis problem into an optimization problem for nonlinear constrained planning. The optimization principle, the sequential quadratic programming method (SQP) for optimization and its ...
null Renmin Li +3 more
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