A simulation algorithm to estimate the geometrical effects of towfish motions on sidescan sonar images is described. The results of simulations using the algorithm are discussed, and bounds for acceptable amplitudes of towfish motions are estimated. Yaw is found to be the most potentially damaging towfish motion, and a sinusoidal yaw motion with amplitude 0.5 deg and period 3 s is found to induce unacceptable distortion of a towfish image. ...
A simulation algorithm previously used to estimate the geometrical effects of towfish motion on single-beam sidescan sonar images is modified to simulate a multiple-beam sidescan sonar. The parameters of the sidescan sonar model are based on those announced for the Multiscan sonar soon to be manufactured by Klein Associates Inc. The results of simulations using the algorithm are discussed and compared with previous results for a single-beam device. The thresholds ...
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