JPS576377A - Multiplication array type ultrasonic wave searching device - Google Patents
Multiplication array type ultrasonic wave searching deviceInfo
- Publication number
- JPS576377A JPS576377A JP7898980A JP7898980A JPS576377A JP S576377 A JPS576377 A JP S576377A JP 7898980 A JP7898980 A JP 7898980A JP 7898980 A JP7898980 A JP 7898980A JP S576377 A JPS576377 A JP S576377A
- Authority
- JP
- Japan
- Prior art keywords
- array type
- ultrasonic wave
- central axis
- width
- main beam
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52046—Techniques for image enhancement involving transmitter or receiver
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To compress the width of a main beam and improve bearing resolution by multiplying the reception signals of the element vibrators in the positions symmetrical to the central axis of an array type transducer then combining and adding their lower frequency components. CONSTITUTION:The outputs of preamplifiers 51-52m corresponding to the pairs of the signals received by the element vibrators (41 and 42m, 42 and 42m-1, -, 4m and 4m+1) in the positions symmetrical to the central axis A' of an array type transducer 4 are multipled respectively by the arrays 81-8m of m pieces of multipliers. The product signals thereof are passed respectively through low-pass filers 91-9m, and are matched of phases by, for example, delay circuits 101-10m, after which they are combined by an adder 7 and are outputted. Thereby, the width of a main beam is compressed and side lobes are supressed as well, so that the bearing resolution during ultrasonic wave searching is improved, and the position, shape, and size of a reflecting body are measured precisely.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7898980A JPS576377A (en) | 1980-06-13 | 1980-06-13 | Multiplication array type ultrasonic wave searching device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7898980A JPS576377A (en) | 1980-06-13 | 1980-06-13 | Multiplication array type ultrasonic wave searching device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS576377A true JPS576377A (en) | 1982-01-13 |
Family
ID=13677298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7898980A Pending JPS576377A (en) | 1980-06-13 | 1980-06-13 | Multiplication array type ultrasonic wave searching device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS576377A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58139088A (en) * | 1982-02-13 | 1983-08-18 | Furuno Electric Co Ltd | Detected information display |
JPS58214867A (en) * | 1982-06-08 | 1983-12-14 | Furuno Electric Co Ltd | Wide range directional underwater detecting apparatus |
JPS597260A (en) * | 1982-07-05 | 1984-01-14 | Toshiba Corp | Method and device for ultrasonic flaw detection |
JPS59101139A (en) * | 1982-11-30 | 1984-06-11 | 株式会社 日立メデイコ | Ultrasonic tomographic apparatus |
JPS61110074A (en) * | 1984-11-02 | 1986-05-28 | Hitachi Ltd | Underwater object detection system |
JPH02164347A (en) * | 1988-12-16 | 1990-06-25 | Aloka Co Ltd | Ultrasonic diagnostic device |
EP0224014B1 (en) * | 1985-10-31 | 1992-04-01 | General Electric Company | Variable focusing in ultrasound imaging using non-uniform sampling |
JP2008131718A (en) * | 2006-11-20 | 2008-06-05 | Shimadzu Corp | Synchronous motor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931346A (en) * | 1972-02-11 | 1974-03-20 | ||
JPS4953464A (en) * | 1972-09-22 | 1974-05-24 |
-
1980
- 1980-06-13 JP JP7898980A patent/JPS576377A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931346A (en) * | 1972-02-11 | 1974-03-20 | ||
JPS4953464A (en) * | 1972-09-22 | 1974-05-24 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58139088A (en) * | 1982-02-13 | 1983-08-18 | Furuno Electric Co Ltd | Detected information display |
JPH0148516B2 (en) * | 1982-02-13 | 1989-10-19 | Furuno Electric Co | |
JPS58214867A (en) * | 1982-06-08 | 1983-12-14 | Furuno Electric Co Ltd | Wide range directional underwater detecting apparatus |
JPH0121471B2 (en) * | 1982-06-08 | 1989-04-21 | Furuno Electric Co | |
JPS597260A (en) * | 1982-07-05 | 1984-01-14 | Toshiba Corp | Method and device for ultrasonic flaw detection |
JPH0161181B2 (en) * | 1982-07-05 | 1989-12-27 | Tokyo Shibaura Electric Co | |
JPS59101139A (en) * | 1982-11-30 | 1984-06-11 | 株式会社 日立メデイコ | Ultrasonic tomographic apparatus |
JPS61110074A (en) * | 1984-11-02 | 1986-05-28 | Hitachi Ltd | Underwater object detection system |
EP0224014B1 (en) * | 1985-10-31 | 1992-04-01 | General Electric Company | Variable focusing in ultrasound imaging using non-uniform sampling |
JPH02164347A (en) * | 1988-12-16 | 1990-06-25 | Aloka Co Ltd | Ultrasonic diagnostic device |
JP2008131718A (en) * | 2006-11-20 | 2008-06-05 | Shimadzu Corp | Synchronous motor |
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