Accession Number:

AD0781639

Title:

Stereoscopic Mapping of the Seafloor by a Towed Two-Fish Side-Scan Sonar System.

Descriptive Note:

Technical rept.,

Corporate Author:

CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CALIF

Personal Author(s):

• Hitchcock,R. D.

Report Date:

1974-06-01

Pagination or Media Count:

27.0

Abstract:

Sea trials were conducted to test the concept of constructing a seafloor contour map by interfacing a manual stereo-sonar plotter with a digital computer. The at-sea work used a pair of 100-kHz, side-scan, sonar fish towed at a lateral separation of 42 feet. Real-time data on near-bottom scanning contained mutual interference effects which prevented the stereoscopic fusing of corresponding sonar images. System component errors were obtainable with repeated scannings of an artificial target array. Modified author abstract

Descriptors:

• *Ocean bottom topography
• *Stereophotography
• *Mapping
• Side looking sonar
• Scanning sonar
• Stereoscopic map plotters
• Signal processing
• Computer programs
• FORTRAN
• Least squares method

Subject Categories:

• Cartography and Aerial Photography
• Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE