JPS57182608A - Display device of sea bottom shape - Google Patents
Display device of sea bottom shapeInfo
- Publication number
- JPS57182608A JPS57182608A JP6769881A JP6769881A JPS57182608A JP S57182608 A JPS57182608 A JP S57182608A JP 6769881 A JP6769881 A JP 6769881A JP 6769881 A JP6769881 A JP 6769881A JP S57182608 A JPS57182608 A JP S57182608A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- receivers
- display
- pairs
- bottom shape
- 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
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To display a sea bottom shape so as to be easy to see, by rotating plural pairs of ultrasonic transmitters and receivers at a speed corresponding to a display distance, and displaying a receiving echo in the form of PPI by means of digital processing and D/A conversion, etc. CONSTITUTION:Plural, for instance, 2 pairs or so of ultrasonic transmitters and receivers 301, 302 of a transmitting and receiving part 1 are rotated at a speed decided in accordance with horizontal direction width beta of an ultrasonic beam, and a display distance L, by setting a vertical shaft to its axis by a variable speed motor 4 whose feedback is controlled by a storage controlling circuit 5 through a distance signal circuit 14 of a display part 2. Subsequently, a receiving echo by the pairs of transmitters and receivers 301, 302 is digitally processed, and is stored in a main storing circuit 32 through substoring circuits 29, 30. These stored contents are read out by synchronizing with a transmitting trigger by the circuit 5, deflection of an electronic beam of a CRT 36 is controlled through a D/A converter 33 and a color matrix circuit 34, and a sea bottom shape is displayed in the form of PPO so as to be easy to see.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6769881A JPS57182608A (en) | 1981-05-07 | 1981-05-07 | Display device of sea bottom shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6769881A JPS57182608A (en) | 1981-05-07 | 1981-05-07 | Display device of sea bottom shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57182608A true JPS57182608A (en) | 1982-11-10 |
Family
ID=13352427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6769881A Pending JPS57182608A (en) | 1981-05-07 | 1981-05-07 | Display device of sea bottom shape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57182608A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840336A (en) * | 1971-09-22 | 1973-06-13 | ||
| JPS4963463A (en) * | 1972-06-05 | 1974-06-19 | ||
| JPS5363053A (en) * | 1976-11-17 | 1978-06-06 | Koden Electronics Co Ltd | Video displaying device |
-
1981
- 1981-05-07 JP JP6769881A patent/JPS57182608A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840336A (en) * | 1971-09-22 | 1973-06-13 | ||
| JPS4963463A (en) * | 1972-06-05 | 1974-06-19 | ||
| JPS5363053A (en) * | 1976-11-17 | 1978-06-06 | Koden Electronics Co Ltd | Video displaying device |
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