JPS56115970A - Parametric active sonar - Google Patents
Parametric active sonarInfo
- Publication number
- JPS56115970A JPS56115970A JP1855680A JP1855680A JPS56115970A JP S56115970 A JPS56115970 A JP S56115970A JP 1855680 A JP1855680 A JP 1855680A JP 1855680 A JP1855680 A JP 1855680A JP S56115970 A JPS56115970 A JP S56115970A
- Authority
- JP
- Japan
- Prior art keywords
- sonar
- receiver
- sound
- transmitter
- medium
- 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.)
- Granted
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
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)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To improve the SNR, resolving-power, directivity, detection distance and communication distance of a parametric active sonar by employing a sonar transmitter using a diced ceramic oscillator and a cylindrical sonar receiver having a reflecting body. CONSTITUTION:The signal having two frequency components from the oscillation/ modulation circuit 13 is amplified in the transmission unit 14 and radiated via the sonar transmitter 15 into the sound-field medium as a sound wave. The sound wave of the differential frequency component generated according to the nonlinearity of the sound-field medium is reflected by a foreign substance 16 in the medium and received by the sonar receiver 17. The signal processed in the reception unit 18 is displayed on the recording/display unit 19 as the position of the foreign substance 16, the intensity of the echo and the like. A diced ceramic oscillator is used in the sonar transmitter 15, and a cylindrical sonar receiver having a reflecting body is used as the sonar receiver 17.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1855680A JPS56115970A (en) | 1980-02-19 | 1980-02-19 | Parametric active sonar |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1855680A JPS56115970A (en) | 1980-02-19 | 1980-02-19 | Parametric active sonar |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56115970A true JPS56115970A (en) | 1981-09-11 |
JPS6251434B2 JPS6251434B2 (en) | 1987-10-29 |
Family
ID=11974892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1855680A Granted JPS56115970A (en) | 1980-02-19 | 1980-02-19 | Parametric active sonar |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56115970A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008020429A (en) * | 2006-07-13 | 2008-01-31 | Pohang Eng College | Multiresonance ultrasonic transducer based on mems for super directivity ultrasonic distance measurement using parameteric transmitting array in air and its manufacturing method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5369074A (en) * | 1976-11-30 | 1978-06-20 | Int Nickel Co | Geophysical detection |
-
1980
- 1980-02-19 JP JP1855680A patent/JPS56115970A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5369074A (en) * | 1976-11-30 | 1978-06-20 | Int Nickel Co | Geophysical detection |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008020429A (en) * | 2006-07-13 | 2008-01-31 | Pohang Eng College | Multiresonance ultrasonic transducer based on mems for super directivity ultrasonic distance measurement using parameteric transmitting array in air and its manufacturing method |
JP4594286B2 (en) * | 2006-07-13 | 2010-12-08 | 學校法人浦項工科大學校 | MEMS-based multi-resonant ultrasonic transducer and method of fabrication for super-directional ultrasonic distance measurement using parametric transmitting array in air |
Also Published As
Publication number | Publication date |
---|---|
JPS6251434B2 (en) | 1987-10-29 |
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