Accession Number:

ADD014657

Title:

Variable Focusing Sonar.

Descriptive Note:

Patent, filed 22 Oct 68, patented 3 Jul 90,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Bealor, Jesse L., Jr.
• Cook, Rufus L.

Report Date:

1990-07-03

Pagination or Media Count:

7.0

Abstract:

The received signal from an acoustic echo detection and ranging system is compared with internally generated signals indicating the focus of a variable focus transducer. Logic circuits in the signal comparison channel develop control voltages to focus said transducer upon a predetermined area from which said received signal originates. Patents. jhd

Descriptors:

• *PATENTS
• *SONAR
• *BEAM FORMING
• ACOUSTIC DETECTION
• ACOUSTIC WAVES
• CHANNELS
• COMPARISON
• FOCUSING
• INTERNAL
• LOGIC CIRCUITS
• SIGNALS
• SONAR TRANSDUCERS
• VARIABLES

Subject Categories:

• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE