A Hybrid Adaptive Phase Space Method for Reflection Traveltime Tomography
نویسندگان
چکیده
منابع مشابه
Adaptive phase space method with application to reflection traveltime tomography
In this work an adaptive strategy for the phase space method [5] for traveltime tomography is developed. The method uses those geodesics/rays that produces smaller mismatch with the measurements first and continue on in the spirit of layer stripping without the need to specifically defining the layers physically. The adaptive approach improves stability, efficiency and accuracy. We then extend ...
متن کاملA phase-space formulation for elastic-wave traveltime tomography
We adopt a recent work in Chung, Qian, Uhlmann and Zhao (Inverse Problems, 23(2007) 309-329) to develop a phase space method for reconstructing pressure wave speed and shear wave speed of an elastic medium from travel time measurements. The method is based on the so-called Stefanov-Uhlmann identity which links two Riemannian metrics with their travel time information. We design a numerical algo...
متن کاملA level-set adjoint-state method for crosswell transmission-reflection traveltime tomography
S U M M A R Y We propose a level-set adjoint-state method for crosswell traveltime tomography using both first-arrival transmission and reflection traveltime data. Since our entire formulation is based on solving eikonal and advection equations on finite-difference meshes, our traveltime tomography strategy is carried out without computing rays explicitly. We incorporate reflection traveltime d...
متن کاملHybrid projection-reflection method for phase retrieval.
The phase-retrieval problem, fundamental in applied physics and engineering, addresses the question of how to determine the phase of a complex-valued function from modulus data and additional a priori information. Recently we identified two important methods for phase retrieval, namely, Fienup's basic input-output and hybrid input-output (HIO) algorithms, with classical convex projection method...
متن کاملA Hybrid Projection Reflection Method for Phase Retrieval
The phase retrieval problem, fundamental in applied physics and engineering, asks to determine the phase of a complex-valued function from modulus data and additional a priori information. Recently, we identified two important methods for phase retrieval, namely Fienup’s Basic Input-Output (BIO) and Hybrid Input-Output (HIO) algorithms, with classical convex projection methods and suggested tha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: SIAM Journal on Imaging Sciences
سال: 2019
ISSN: 1936-4954
DOI: 10.1137/18m117426x