Full wave inverion in frequency-domain

Shin'ichi UESAKA

Kansai Research Institute, Inc.
Kyoto, Japan.
E-mail: uesaka@kyoto.kansai-ri.co.jp

Abstract

We made a numerical experiment on full wave inversion based on acoustic wave-equation in frequency-domain. The core of this method is that we can select frequencies to calculate the Frechet derivative of wave-field in terms of velocity at each iteration. Numerical experiment show that we don't use al frequencies. In the early stage of iteration we calculate the Frechet derivative by low frequency, and later by high frequency. Consequently computing cost is lower than using all frequencies and we can get high-resolution image.

raeg99@tansa.kumst.kyoto-u.ac.jp

Last modified: Fri Dec 3 09:32:25 1999