JPS5576965A - Acoustic device for fish detector - Google Patents
Acoustic device for fish detectorInfo
- Publication number
- JPS5576965A JPS5576965A JP15050678A JP15050678A JPS5576965A JP S5576965 A JPS5576965 A JP S5576965A JP 15050678 A JP15050678 A JP 15050678A JP 15050678 A JP15050678 A JP 15050678A JP S5576965 A JPS5576965 A JP S5576965A
- Authority
- JP
- Japan
- Prior art keywords
- submarine
- signal
- depth
- detector
- gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
- G01S15/101—Particularities of the measurement of distance
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To obtain only reflected wave signal at shallower depth than any depth on the submarine bottom and completely identify the fish on the submarine bottom by a fish detector by providing a time delay circuit corresponding to any depth in the fish detector. CONSTITUTION:The received pulse from a sound transmitter/receiver 1 is applied through a duplexer circuit 2 and a receiver 4 to a delay circuit 5. This received pulse signal is applied to an analog gate 9 after arbitrarily set delay time by a delay time controller 6. The pulse signal at the receiver 4 is also applied to a submarine detector 7 for detecting the submarine signal. A submarine gate 8 receives a transmitting timing pulse from a trnasmitting timing pulse generator 14 and the submarine signal output from the detector 7 and produces a gate signal to thereby control the gate 9. Thus, it can obtain the signal at shallower depth than any depth to operate through a modulator 10 and an amplifier 12 an electroacoustic converter 13 to thereby generate a sound.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15050678A JPS5576965A (en) | 1978-12-07 | 1978-12-07 | Acoustic device for fish detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15050678A JPS5576965A (en) | 1978-12-07 | 1978-12-07 | Acoustic device for fish detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5576965A true JPS5576965A (en) | 1980-06-10 |
Family
ID=15498347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15050678A Pending JPS5576965A (en) | 1978-12-07 | 1978-12-07 | Acoustic device for fish detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576965A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59155570U (en) * | 1983-04-05 | 1984-10-18 | 古野電気株式会社 | Fish alarm device for fish finder |
-
1978
- 1978-12-07 JP JP15050678A patent/JPS5576965A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59155570U (en) * | 1983-04-05 | 1984-10-18 | 古野電気株式会社 | Fish alarm device for fish finder |
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