Inverse Scattering Image Reconstruction from Reflection and Transmission Data Observation with Fixed Transmitter/Receiver Pair Transducer

Abstract

The inverse scattering imaging method based on reflection and transmission observation data, which was previously developed by the present author, is anticipated for its practical advantage in which the necessary range of observation view can be reduced to half compared to the conventional full observation view. In this report, we propose a modified method, which involves data observation carried out while rotating an object under the fixed condition of a transmitter/receiver pair, and a reflector. The inverse scattering reconstruction procedure is developed by applying the mirror-image theory. A special feature of the present method which is stressed is its superiority for the limitation of the observation view range much smaller than 180 deg. The validity of the method is tested using simulation and experimental data from the triangular specimen. It is shown that the quantitative precision of the reconstructed sound speed images is fairly good even when the limited viewing range is less than 120 deg.