SYSTEM, APPARATUS AND PROGRAM FOR PHASE ADJUSTMENT

摘要

PROBLEM TO BE SOLVED: To estimate a shape of a deformed towed line array, and perform a phase adjustment processing with the directivity compensated from the estimated shape of the towed line array. SOLUTION: The phase adjustment system of the invention includes: the line array with a plurality of wave receivers and a sensor; and a phase adjustment apparatus. The phase adjustment apparatus has: a pseudo output generator for generating a plurality of pseudo sensor output information considered as outputs from a plurality of pseudo positions on the line array based on sensor information from the sensor and azimuth information on a towing body; a line array shape estimator for estimating the shape of the line array based on a plurality of the pseudo sensor output information and a plurality of the pseudo positions, and obtaining positions of a plurality of the wave receivers on the estimated line array; and a phase adjustment processor for adjusting phases of received wave signals by adding a delay time to the received wave signals from a plurality of the wave receivers when a sound wave is received at corresponding positions of the wave receivers obtained by the line array shape estimator. COPYRIGHT: (C)2011,JPO&INPIT