Accession Number:

ADA279252

Title:

The Effects of Towfish Motion on Sidescan Sonar Images

Descriptive Note:

Technical rept.

Corporate Author:

MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)

Personal Author(s):

• Anstee, S. D.

Report Date:

1994-02-01

Pagination or Media Count:

50.0

Abstract:

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. The effects of towfish motions on the coverage of the seabed are also discussed.

Descriptors:

• *UNDERWATER CABLES
• *SIDE LOOKING SONAR
• *TOWED BODIES
• *TOWED SONAR
• ALGORITHMS
• SIMULATION
• PITCH(MOTION)
• YAW
• MOTION
• SONAR IMAGES
• IMAGES
• AUSTRALIA
• AMPLITUDE
• SURGES
• HYDRODYNAMICS
• SONAR
• SONAR TRANSDUCERS

Subject Categories:

• Marine Engineering
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE