Paper Title
A Method Development of Correctly Sonar Image Distortion For Diagnosis in Underwater Structure

Abstract
Using a sonar system for diagnosis of an underwater structure may lead to image distortion because of shaking due to the environmental limitations of acquiring data from a boat. The quality degradation by shaking increases as the resolution, i.e. frequency, increases. We developed the distortion correction algorithm using a gyro sensor to solve the problem. The developed distortion correction algorithm can be part of the post-processing program to correct the data distorted by shaking of 3�/sec or higher. Index Terms- Underwater Structure, Sonar Image, Distortion correction, Safety diagnosis, Gyro sensor.