Title:
MARK DISCRIMINATION SYSTEM
Document Type and Number:
Japanese Patent JPS52127261
Kind Code:
A
Abstract:
PURPOSE: To permit the discrimination of a target in a sonar, etc. by use of a cable transmitter of the linear arrangement type which can transmit successively ultrasonic wave beams whose frequencies are varied with directions.
Inventors:
KOSHIKAWA TSUNEJI
Application Number:
JP4246576A
Publication Date:
October 25, 1977
Filing Date:
April 16, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G01S15/42; G01S15/10; (IPC1-7): G01S9/66
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