APPARATUS AND METHOD FOR IMAGING AN UNDERGROUND STRUCTURE WITHOUT EDGE REFLECTIONS USING SEISMIC IMAGING

摘要

PURPOSE: An apparatus and method for imaging an underground structure are provided to reduce a calculation amount in a wave equation solution by removing the influence of an artificial boundary.;CONSTITUTION: An underground structure imaging unit(500) images an underground structure from a modeling parameter calculated by a wave inverse calculating unit(300). The wave inverse calculating unit includes a modeling data calculating unit(330), a residual function calculating unit, and a modeling parameter calculating unit(310). The modeling data calculating unit obtains modeling data by solving a wave equation using a source wavelet. The residual function calculating unit obtains a residual between the measurement data and the modeling data of the modeling data calculating unit. If the residual function is a reference value or more, the modeling parameter calculating unit updates the modeling parameter of the current wave equation to minimize the residual function. If the residual function is below the reference value, the modeling parameter calculating unit outputs the current modeling parameter as the final output value.;COPYRIGHT KIPO 2013;[Reference numerals] (310) Modeling parameter calculating unit; (330) Modeling data calculating unit; (350) Measurement data processing unit; (370) Target function calculating unit; (390) Memory; (500) Underground structure imaging unit; (AA) Transmitter information; (BB) Measurement data; (CC) Waveform inverting unit