LATERAL ECHO SOUNDER - MODEL CL-1,
Abstract
The design of a narrow beam lateral echo sounder for use on a deep-towed vehicle is given. The transducer consists of ferro-electric ceramic cylinders (2 1/4 in. x 1 1/2 in. o.d., 1 1/4 in. i.d.) operated in the first radial resonant mode, about 27 kcps. Eighteen cylinders are cemented together to form a long cylinder and placed in an oil-filled boot. The active element is placed in front of a corner reflector made of lead. The lateral beamwidth is about 3 degrees and the vertical beamwidth is 20 degrees. The remote driving electronic circuits, amplifier, etc., and the printed circuit board layouts are given. The instrument transmits a 1-msec duration pulse with a peak power of about 100 w. The results of field tests are shown and indicate that the single-sided range with this power is about 2500 ft. A maximum peak power of 500 w may be delivered with a higher voltage supply. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 12, 1964
- Accession Number
- AD0437905
Entities
People
- C. S. Clay
- Wenkai Liang
Organizations
- Columbia University