Patent ID: 6999880

Claim:
An iterative method of normalized waveform invasion to obtain a model parameter describing one or more physical properties of a medium, the method comprising the steps of: a) inputting a time domain measurement data set D ji d (t), (j=1~NG; i=1~NS), where d denotes a data tensor, NG is the number of receivers and NS is the number of sources; b) means for minimizing a model parameter m below an error bound in the process of creating a normalized waveform inversion, wherein said minimizing step further comprises: i) Fourier transforming the time domain measurement data set D ji d (t) to create a measurement spectral data set D ji d (ω); ii) normalizing the measurement spectral data set D ji d (ω) to create a normalized data wavefield T ji d (ω); iii) modeling a medium by iterating the model parameter m describing one or more physical properties of the medium; by (1) minimizing a weighted error, between the normalized data wavefield T ji d (ω) and the normalized modeled wavefield T ji m (ω) of the response of the medium, to a level below the error bound; (2) outputting the iterated model parameter m corresponding to the weighted error below the error bound, as a minimized model parameter.