JPS5714771A - Sounding system of sonar - Google Patents
Sounding system of sonarInfo
- Publication number
- JPS5714771A JPS5714771A JP8980180A JP8980180A JPS5714771A JP S5714771 A JPS5714771 A JP S5714771A JP 8980180 A JP8980180 A JP 8980180A JP 8980180 A JP8980180 A JP 8980180A JP S5714771 A JPS5714771 A JP S5714771A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- receiving
- frequency
- fed
- marker
- 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
- G01S15/102—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves using transmission of pulses having some particular characteristics
- G01S15/107—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves using transmission of pulses having some particular characteristics using frequency agility of carrier wave
Abstract
PURPOSE:To increase receiving times of distant marker and to make possible to search repeatedly or continuously by receiving respective different transmission frequencies and by discriminating them. CONSTITUTION:A transmission/reception unit 1 transmits sound wave in water and receives echo sound from the marker. Receiving signal passed through a transmission/receiver converter 2 is phase composed by a receiver 5, amplified, and fed to BPF6-10. Then, receiving signals correspond to respective transmission frequencies f1-f5 are frequency discriminated. Consequently, output of BPF having center frequency which coincides with the transmission frequency is selected and fed to a detection circuit 12. Then, detection signal is displayed on CRT tube by a display circuit 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8980180A JPS5714771A (en) | 1980-07-01 | 1980-07-01 | Sounding system of sonar |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8980180A JPS5714771A (en) | 1980-07-01 | 1980-07-01 | Sounding system of sonar |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5714771A true JPS5714771A (en) | 1982-01-26 |
Family
ID=13980812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8980180A Pending JPS5714771A (en) | 1980-07-01 | 1980-07-01 | Sounding system of sonar |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5714771A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6394948A (en) * | 1986-10-09 | 1988-04-26 | Yakult Honsha Co Ltd | Production of food fiber |
US5269470A (en) * | 1991-10-01 | 1993-12-14 | Oji Paper Co., Ltd. | Method of producing finely divided fibrous cellulose particles |
US6270830B1 (en) | 1996-10-21 | 2001-08-07 | Asahi Kasei Kogyo Kabushiki Kaisha | Stabilizer for meat products and meat product composition |
US6495190B1 (en) | 1998-01-09 | 2002-12-17 | Asahi Kasei Kabushiki Kaisha | Cellulose-containing composite |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS539104A (en) * | 1976-07-13 | 1978-01-27 | Seiko Instr & Electronics Ltd | Cassette tape running speed detector |
-
1980
- 1980-07-01 JP JP8980180A patent/JPS5714771A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS539104A (en) * | 1976-07-13 | 1978-01-27 | Seiko Instr & Electronics Ltd | Cassette tape running speed detector |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6394948A (en) * | 1986-10-09 | 1988-04-26 | Yakult Honsha Co Ltd | Production of food fiber |
JPH0458948B2 (en) * | 1986-10-09 | 1992-09-18 | Nippon Shokuhin Kako Kk | |
US5269470A (en) * | 1991-10-01 | 1993-12-14 | Oji Paper Co., Ltd. | Method of producing finely divided fibrous cellulose particles |
US6270830B1 (en) | 1996-10-21 | 2001-08-07 | Asahi Kasei Kogyo Kabushiki Kaisha | Stabilizer for meat products and meat product composition |
US6495190B1 (en) | 1998-01-09 | 2002-12-17 | Asahi Kasei Kabushiki Kaisha | Cellulose-containing composite |
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