GB1330472A - Sonar systems - Google Patents
Sonar systemsInfo
- Publication number
- GB1330472A GB1330472A GB1330472DA GB1330472A GB 1330472 A GB1330472 A GB 1330472A GB 1330472D A GB1330472D A GB 1330472DA GB 1330472 A GB1330472 A GB 1330472A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sonar
- locus
- error
- ship
- track
- 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.)
- Expired
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
- G01S7/52004—Means for monitoring or calibrating
-
- 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
-
- 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
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
-
- 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
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
Abstract
1330472 Echo-sounding EMI Ltd 21 Dec 1970 [19 Dec 1969] 61906/69 Heading H4D A method of correcting sonar charts includes detecting by sonar the variations in relative position of at least one reference object as the echo receiver is moved and utilizing the difference between the expected detected variations to correct further sonar indications for errors due to velocity gradients in the transmitting medium. A sonar source (1, Fig. 1, not shown carried on a ship transmits a fan-beam to the sea-bed aligned along the ships track. The echoes are recorded on a strip chart 10, Fig. 2 (b) and the strip speed is such that if no vertical velocity gradient is present the locus of the point 3 Fig. 2(a) is recorded as a line 3T at 45 degrees to AA<SP>1</SP> which represents the ship's track. The actual detected locus is however 3 0 . The plan range error is zero at 3 3 when point 3 is vertically below the ship. Thus a line drawn at 45 degrees to AA<SP>1</SP> through 3 3 enables the variation of the error with plan range to be determined for all points along AA<SP>1</SP>. When the normal side-looking sonar charting is effected the error function is used to modulate the display writing scan. Errors due to currents in the sea, may be similarly dealt with except that the error is a maximum near the ships track and the detected locus is asymptotic to the true locus at the extremities of the chart. When both errors are present the true locus is drawn such that the errors at both chart extremities is equal but opposite in sense. The sea-bed depth is also recorded 13, and utilized in the error function. The fan-beam may be replaced by a number of pencil-beams or a single pencil-beam used to track a single echo source as the ship moves.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6190669 | 1970-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1330472A true GB1330472A (en) | 1973-09-19 |
Family
ID=10487618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1330472D Expired GB1330472A (en) | 1970-12-21 | 1970-12-21 | Sonar systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1330472A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020508A1 (en) * | 1980-05-30 | 1982-01-07 | Siegfried R.J. Dipl.-Phys. Dr.rer.nat. 2300 Kiel Fahrentholz | Sonar equipment for vessel measuring velocity distribution - sounds depth vertically and at angle and computes effective geometric angle |
US4611313A (en) * | 1983-10-20 | 1986-09-09 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Method for acoustically surveying the surface contours of the bottom of a body of water |
EP0898176A2 (en) * | 1997-08-22 | 1999-02-24 | STN ATLAS Elektronik GmbH | Method for determining the range and velocity of a water-craft |
US8514658B2 (en) | 2009-07-14 | 2013-08-20 | Navico Holding As | Downscan imaging sonar for reduced interference |
US9142206B2 (en) | 2011-07-14 | 2015-09-22 | Navico Holding As | System for interchangeable mounting options for a sonar transducer |
US9182486B2 (en) | 2011-12-07 | 2015-11-10 | Navico Holding As | Sonar rendering systems and associated methods |
US9223022B2 (en) | 2009-07-14 | 2015-12-29 | Navico Holding As | Linear and circular downscan imaging sonar |
US9244168B2 (en) | 2012-07-06 | 2016-01-26 | Navico Holding As | Sonar system using frequency bursts |
US9268020B2 (en) | 2012-02-10 | 2016-02-23 | Navico Holding As | Sonar assembly for reduced interference |
US10151829B2 (en) | 2016-02-23 | 2018-12-11 | Navico Holding As | Systems and associated methods for producing sonar image overlay |
US11367425B2 (en) | 2017-09-21 | 2022-06-21 | Navico Holding As | Sonar transducer with multiple mounting options |
GB2619768A (en) * | 2022-06-17 | 2023-12-20 | Wavefront Systems Ltd | Method of measuring underwater depth |
-
1970
- 1970-12-21 GB GB1330472D patent/GB1330472A/en not_active Expired
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020508A1 (en) * | 1980-05-30 | 1982-01-07 | Siegfried R.J. Dipl.-Phys. Dr.rer.nat. 2300 Kiel Fahrentholz | Sonar equipment for vessel measuring velocity distribution - sounds depth vertically and at angle and computes effective geometric angle |
US4611313A (en) * | 1983-10-20 | 1986-09-09 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Method for acoustically surveying the surface contours of the bottom of a body of water |
EP0898176A2 (en) * | 1997-08-22 | 1999-02-24 | STN ATLAS Elektronik GmbH | Method for determining the range and velocity of a water-craft |
DE19736552A1 (en) * | 1997-08-22 | 1999-03-11 | Stn Atlas Elektronik Gmbh | Method for determining distance and speed of a watercraft |
EP0898176A3 (en) * | 1997-08-22 | 2000-03-29 | STN ATLAS Elektronik GmbH | Method for determining the range and velocity of a water-craft |
US8605550B2 (en) | 2009-07-14 | 2013-12-10 | Navico Holding As | Downscan imaging sonar |
US10024961B2 (en) | 2009-07-14 | 2018-07-17 | Navico Holding As | Sonar imaging techniques for objects in an underwater environment |
US9223022B2 (en) | 2009-07-14 | 2015-12-29 | Navico Holding As | Linear and circular downscan imaging sonar |
US8514658B2 (en) | 2009-07-14 | 2013-08-20 | Navico Holding As | Downscan imaging sonar for reduced interference |
US9541643B2 (en) | 2009-07-14 | 2017-01-10 | Navico Holding As | Downscan imaging sonar |
US9142206B2 (en) | 2011-07-14 | 2015-09-22 | Navico Holding As | System for interchangeable mounting options for a sonar transducer |
US9182486B2 (en) | 2011-12-07 | 2015-11-10 | Navico Holding As | Sonar rendering systems and associated methods |
US10247823B2 (en) | 2011-12-07 | 2019-04-02 | Navico Holding As | Sonar rendering systems and associated methods |
US9268020B2 (en) | 2012-02-10 | 2016-02-23 | Navico Holding As | Sonar assembly for reduced interference |
US9244168B2 (en) | 2012-07-06 | 2016-01-26 | Navico Holding As | Sonar system using frequency bursts |
US9354312B2 (en) | 2012-07-06 | 2016-05-31 | Navico Holding As | Sonar system using frequency bursts |
US10151829B2 (en) | 2016-02-23 | 2018-12-11 | Navico Holding As | Systems and associated methods for producing sonar image overlay |
US11367425B2 (en) | 2017-09-21 | 2022-06-21 | Navico Holding As | Sonar transducer with multiple mounting options |
GB2619768A (en) * | 2022-06-17 | 2023-12-20 | Wavefront Systems Ltd | Method of measuring underwater depth |
WO2023242004A1 (en) | 2022-06-17 | 2023-12-21 | Wavefront Systems Limited | Method of measuring underwater depth |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |