Title:
【発明の名称】超音波送受信方式
Document Type and Number:
Japanese Patent JP2599009
Kind Code:
B2
Abstract:
PURPOSE:To obtain a required a submarine signal in a stable condition by providing means for storing received signals, means for detecting the angle of oscillation of a transmitter and receiver, means for controlling the reading speed of the stored signals in correspondence with the detected angle of oscillation and means for obtaining the AND of the present signals. CONSTITUTION:When a trigger pulse is applied from a control circuit 61 to a transmitting and receiving circuit 62 to be transmitted, a transmitter and receiver 63 emits the transmitted pulse to the sea bottom. Receiving the signal reflected from the sea bottom, the transmitter and receiver 63 feeds the signal to a receiving circuit 64 wherein the signal is amplified and its waveform is shaped and the output of the receiving circuit 64 is fed to memory circuits 65a and 65b. The memory circuits 65a and 65b are controlled by a memory control circuit 66 so as to alternately perform a reading and a writing. The reading frequency of the circuit 66 is corrected by an angle of oscillation detected by an oscillation detecting circuit 67. The signals of the circuits 65 are controlled by the circuit 66, selected by a changeover circuit 68 and the output of the AND of the selected signal and the output of the circuit 64 is obtained by an AND circuit 69. The output of the AND and a synchronous signal from the circuit 61 are supplied to a water depth measuring circuit 70 and the depth of water is obtained from a time from a transmission to an arrive at the sea bottom. Thus, submarine signals can be measured without an interruption in a stable condition even when a ship is oscillated.
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Inventors:
Watanabe Yasunori
Application Number:
JP33511989A
Publication Date:
April 09, 1997
Filing Date:
December 26, 1989
Export Citation:
Assignee:
Kaijo Co., Ltd.
International Classes:
G01P5/00; G01B17/00; G01S7/526; G01S15/08; (IPC1-7): G01S7/526; G01S15/08
Domestic Patent References:
| JP4970652A | ||||
| JP1269082A | ||||
| JP50143568A | ||||
| JP6313514A | ||||
| JP5910869A | ||||
| JP6391585A | ||||
| JP6044627B2 |
Attorney, Agent or Firm:
Minoru Yakushi (1 person outside)