JPS5649968A - Underwater detection device applicable in multidirection - Google Patents
Underwater detection device applicable in multidirectionInfo
- Publication number
- JPS5649968A JPS5649968A JP9281379A JP9281379A JPS5649968A JP S5649968 A JPS5649968 A JP S5649968A JP 9281379 A JP9281379 A JP 9281379A JP 9281379 A JP9281379 A JP 9281379A JP S5649968 A JPS5649968 A JP S5649968A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- circuit
- indicated
- slice
- pulses
- 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
- G01S7/56—Display arrangements
- G01S7/62—Cathode-ray tube displays
- G01S7/6218—Cathode-ray tube displays providing two-dimensional coordinated display of distance and direction
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To display clearly-separate indication of a signal of each azimuth by a method wherein supersonic reflection pulses of high range received ae arranged in time series, the signals are processed by the secondary differentiation and the output pulses thereof are indicated on a CRT consecutively, while being delayed by one cycle of spiral sweeping of the CRT. CONSTITUTION:Supersonic reflection waves from each direction received by supersonic reflection wave transmitter-receivers Z1-Zn are arranged in time series in a time-series circuit 2, passed through an amplifier 3 and a gate circuit 9 controlled by a comparator 18 and sent out as signals above the noise level. These signals are processed twice with differentiation by differential circuits 10 and 11, and pulse signals above the slice level are taken out by a slice circuit 12. The slice signals are inputted sequentially in shift registers 14, 15 and 16, and, in synchronization with clock pulses of a source 17 of the clock pulse, are indicated in a braun tube consecutively as the signals delayed by one cycle of the spiral sweeping of the indicator 4 of the braun tube, through the intermediary of an OR circuit 13. Thus, the signal of each azimuth is indicated in a clearly separated manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9281379A JPS5649968A (en) | 1979-07-20 | 1979-07-20 | Underwater detection device applicable in multidirection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9281379A JPS5649968A (en) | 1979-07-20 | 1979-07-20 | Underwater detection device applicable in multidirection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5649968A true JPS5649968A (en) | 1981-05-06 |
Family
ID=14064848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9281379A Pending JPS5649968A (en) | 1979-07-20 | 1979-07-20 | Underwater detection device applicable in multidirection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5649968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0673432A (en) * | 1992-08-26 | 1994-03-15 | Nippon Steel Corp | Treatment of molten steel by vacuum-decarburization |
-
1979
- 1979-07-20 JP JP9281379A patent/JPS5649968A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0673432A (en) * | 1992-08-26 | 1994-03-15 | Nippon Steel Corp | Treatment of molten steel by vacuum-decarburization |
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| Lerfald et al. | OF HIGH FREQUENCY RADIO WAVES |