CN101762823B - System for measuring position of marine seismic streamer based on one-way hydroacoustic ranging - Google Patents
System for measuring position of marine seismic streamer based on one-way hydroacoustic ranging Download PDFInfo
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- CN101762823B CN101762823B CN201010300481XA CN201010300481A CN101762823B CN 101762823 B CN101762823 B CN 101762823B CN 201010300481X A CN201010300481X A CN 201010300481XA CN 201010300481 A CN201010300481 A CN 201010300481A CN 101762823 B CN101762823 B CN 101762823B
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Abstract
The invention discloses a system for measuring position of a marine seismic streamer based on one-way hydroacoustic ranging and belongs to the technical field of marine seismic survey. The system comprises a ship-borne system of a marine seismic survey ship, water surface units, underwater units, a dada cable and a power supply cable. The system adopts the position data of any three water surface units, the vertical position data of an underwater unit to be measured and the distances between the three water surface units and the underwater unit to be measured to calculate the position data of the underwater unit to be measured; and the system uses the position data of the underwater units to obtain the positions of points of the marine seismic streamer by interpolation calculation. The system adopts the one-way hydroacoustic ranging, namely, the water surface units are only provided with acoustic wave launchers and the underwater units are only provided with acoustic wave receivers, thus increasing the operating range of the hydroacoustic ranging and reducing the interference of the acoustic wave launchers in a hydrophone group; and by adopting ranging acoustic wave signals of characteristic spectra, the recognition method of the ranging acoustic wave signals by the underwater units is simplified, and the system complexity is reduced.
Description
Technical field
The present invention relates to a kind of system for measuring position of marine seismic streamer, especially a kind of system for measuring position of marine seismic streamer based on one-way hydroacoustic ranging belongs to the offshore shooting technical field.
Background technology
The offshore shooting system is made up of offshore shooting ship, the seismic origin, marine seismic streamer and towing cable control device usually.The offshore shooting ship is generally one or several above water crafts.The seismic origin is generally air gun or array air gun.Marine seismic streamer is called for short towing cable, is generally one or several underwater cable that is about thousands of meters, and its inside is equipped with hydrophone array, is used to receive earthquake reflected wave.The towing cable control device is used to control the position of marine seismic streamer, and according to the installation site, it can be divided into the first guides of cable, towing cable controller and cable tail buoy, is respectively applied for the control to towing cable stem, middle part and tail position.
In the offshore shooting process, the seismic origin and marine seismic streamer are by the towing of offshore shooting ship, with the speed of a ship or plane navigation of 3-5 joint.The seismic origin is launched at interval with certain hour, and the seismic event of generation is transmitted in the submarine geology structure by seawater, reflects on the interphase on two kinds of stratum, and earthquake reflected wave is received by the hydrophone array that is installed in the towing cable, forms geological data.In the position data input marine seismic data interpre(ta)tive system of above-mentioned geological data, just can obtain the submarine geology structure in target marine site together with towing cable.
The position data of marine seismic streamer is recorded by system for measuring position of marine seismic streamer.But marine seismic streamer is about thousands of meters, and any towing cable position measuring system all can not be implemented to measure to each point on the towing cable, and can only some point of interest on the towing cable be implemented to measure, and the method for use interpolation is calculated the position of marine seismic streamer each point.
In the prior art, the patent No. be 6839302B2 U.S. Patent Publication a kind of system for measuring position of marine seismic streamer.This patent has designed a kind of subaqueous sound ranging segmentation.This subaqueous sound ranging segmentation is inlaid in the towing cable at certain intervals along the towing cable length direction, and each subaqueous sound ranging divides intersegmental part that a pinger and an acoustic receiver are installed.In measuring process, pinger in each subaqueous sound ranging segmentation in other subaqueous sound ranging segmentation acoustic receiver emission characteristic acoustic signals and write down launch time, acoustic receiver in each subaqueous sound ranging segmentation receives the feature acoustic signals of other subaqueous sound ranging segmentation emission, writes down the time of reception of each feature acoustic signals after the identification respectively; According to the velocity of sound in emission, time of reception difference and the water of each feature acoustic signals, can draw the distance between each subaqueous sound ranging segmentation; Distance between above-mentioned each subaqueous sound ranging segmentation is carried out COMPREHENSIVE CALCULATING, can draw the relative position between each subaqueous sound ranging segmentation; If the absolute position of known any one or several subaqueous sound ranging segmentations then can draw the absolute position of each subaqueous sound ranging segmentation, and calculate the position of towing cable each point thus.But the subaqueous sound ranging segmentation is inlaid in the towing cable, and its inner space is limited, and high-power pinger can't be installed, and causes subaqueous sound ranging operating distance shorter; The subaqueous sound ranging segmentation is inlaid in the towing cable, is installed in its inner pinger and can disturbs the hydrophone array that closes on when work.
The patent No. is that 03811783.5 Chinese patent discloses a kind of system for measuring position of marine seismic streamer.This patent has designed a kind of surface apparatus.This surface apparatus is by offshore shooting ship towing navigation, and its inside is equipped with a GPS receiver and a pinger.This patent has also designed a kind of sound wave receiving equipment.This sound wave receiving equipment is fixedly mounted on the towing cable outside at certain intervals along the towing cable length direction, and its inside is equipped with an acoustic receiver.In measuring process, each surface apparatus receives gps signal determining the position of self, and the positional information of himself is launched each sound wave receiving equipment receiving surface device emitting sound wave information signal by acoustic message signal in water; Each sound wave receiving equipment only need receive three different surface apparatus emitting sound wave information signals, just can draw the position of himself, and calculate the position of towing cable each point thus by decoding, calculating.This towing cable position measuring system uses acoustic message signal, when improving measuring accuracy, has greatly increased the system complex degree, and equipment cost is sharply raise; The sound wave receiving equipment that is installed in the towing cable outside can cause the flow noise, disturbs the hydrophone array that closes on.
Summary of the invention
For deficiency and the defective that overcomes prior art, the invention provides a kind of system for measuring position of marine seismic streamer based on one-way hydroacoustic ranging.
The present invention is achieved through the following technical solutions.The present invention includes offshore shooting ship shipborne system, water surface unit, unit, data cable and service cable under water.
Shipborne system is installed on the offshore shooting ship.Shipborne system is made up of computer hardware, Control Software and data processing software.Control Software is used to control whole towing cable position measuring system, particularly to each water surface unit, unit sending controling instruction under water.Data processing software is used to handle, calculate the data of each water surface unit, unit transmission under water.
Several water surface unit are installed in respectively on the first guides of cable, cable tail buoy and the floating drum by the towing of offshore shooting ship of offshore shooting ship, each marine seismic streamer, and with the offshore shooting ship at surface navigation.Water surface unit comprises water surface unit transducer, pinger, gps antenna, GPS receiver, water surface unit single-chip microcomputer and water surface unit electric supply installation.Water surface unit transducer and pinger are formed acoustic emission apparatus, are used for to water emission characteristic frequency range range finding acoustic signals.Water surface unitary space is abundant, and high-power transducer can be installed, to increase subaqueous sound ranging operating distance.Gps antenna and GPS receiver are formed the GPS receiving trap, are used to receive gps signal, and calculate the GPS position data of water surface unit.Water surface unit single-chip microcomputer comprises processor, reservoir, A/D converter, PORT COM, input/output port and clock.The PORT COM of water surface unit single-chip microcomputer links to each other with the data cable of being drawn by the offshore shooting ship; An input/output port of water surface unit single-chip microcomputer links to each other with the input/output port of pinger, and the output port of pinger links to each other with the input port of water surface unit transducer; Another input/output port of water surface unit single-chip microcomputer links to each other with the input/output port of GPS receiver, and the input port of GPS receiver links to each other with the output port of gps antenna.Water surface unit single-chip microcomputer is used for instruction that the taken-over vessel loading system sends, transfers data to shipborne system; The guide sound wave transmitting device is opened or is closed, at predetermined instant with its band transmit ranging acoustic wave signals of characteristic spectra of monopolizing, and record launch time; Control begins or stops to write down the GPS position data.The input end of water surface unit electric supply installation links to each other with the service cable that the offshore shooting ship is drawn, with from the power taking of offshore shooting ship; The output terminal of water surface unit electric supply installation links to each other with inner each consumer in water surface unit, to power to inner each consumer in water surface unit.
Several are installed in respectively in the towing cable controller of each marine seismic streamer the unit under water, and navigate by water under water with marine seismic streamer.The unit comprises under water unit transducer, acoustic receiver, prime amplifier, bandpass filter, unit single-chip microcomputer, depth transducer and unit electric supply installation under water under water under water.Wherein, unit transducer and acoustic receiver are formed the sound wave receiving trap under water, are used to receive the ranging acoustic wave signals of characteristic spectra of each water surface unit emission.Because the unit transducer only need receive and need not to launch acoustic signals under water, so its volume can be significantly smaller than above-mentioned water surface unit transducer.Prime amplifier, bandpass filter be used for to the ranging acoustic wave signals of characteristic spectra that receives amplify, Filtering Processing.Depth transducer is used to measure the upright position data of unit under water.The unit single-chip microcomputer comprises processor, reservoir, A/D converter, PORT COM, input port, output port and clock under water.The PORT COM of unit single-chip microcomputer links to each other with the data cable that the offshore shooting ship is drawn under water; The unit single machine output end links to each other with the input port of acoustic receiver under water, and another input port of acoustic receiver links to each other with the output port of unit transducer under water; The unit single-chip microcomputer input port links to each other with the output port of bandpass filter under water, and the input port of bandpass filter links to each other with the output port of prime amplifier, and the input port of prime amplifier links to each other with the output port of acoustic receiver; Another input port of unit single-chip microcomputer links to each other with the output port of depth transducer under water.The unit single-chip microcomputer is used for instruction that the taken-over vessel loading system sends, transfers data to shipborne system under water; The guide sound wave receiving device is opened or is closed; The ranging acoustic wave signals of characteristic spectra of identification after prime amplifier, bandpass filter are handled, and write down the time of reception of each ranging acoustic wave signals of characteristic spectra; Control begins or stops to write down the upright position data.The input end of unit electric supply installation links to each other with the service cable that the offshore shooting ship is drawn under water, with from the power taking of offshore shooting ship; The output terminal of unit electric supply installation links to each other with inner each consumer in unit under water under water, to power to inner each consumer in unit under water.
The present invention uses the upright position data of the position data of any three water surface unit, unit under water to be measured and the distance of above-mentioned three water surface unit to unit under water to be measured, utilizes formula (1) to calculate the position data of unit under water to be measured.
(x-x
i)
2+(y-y
i)
2+(z-z
i)
2＝r
i 2，i＝1，2，3，4 (1)
In the formula
(x, y z) are the coordinate of unit under water to be measured;
(x
i, y
i, z
i) be the coordinate of water surface unit;
r
iDistance for water surface unit to unit under water to be measured.
The one-shot measurement course of work of the present invention is as follows.(1) Control Software in the shipborne system sends the instruction of calibration clock by data cable, and each water surface unit single-chip microcomputer receives instruction, the calibration clock; Each instruction of unit single-chip microcomputer reception under water, the calibration clock.(2) Control Software in the shipborne system send to be prepared distance measuring instruction by data cable, and each water surface unit single-chip microcomputer receives instruction, beginning with certain hour write down at interval by the GPS receiving trap calculate the GPS position data; Each instruction of unit single-chip microcomputer reception under water, beginning is write down the upright position data that recorded by depth transducer at interval with certain hour.(3) Control Software in the shipborne system sends the beginning distance measuring instruction by data cable, and each water surface unit single-chip microcomputer receives instruction, opens acoustic emission apparatus, at predetermined instant with its frequency range of monopolizing emission characteristic frequency range range finding acoustic signals in water; The sound wave receiving trap is opened in each instruction of unit single-chip microcomputer reception under water.(4) each under water the sound wave receiving trap of unit receive the ranging acoustic wave signals of characteristic spectra of each water surface unit emission in succession, prime amplifier, bandpass filter and under water the unit single-chip microcomputer ranging acoustic wave signals of characteristic spectra that receives is handled in real time, is discerned, and write down the time of reception of each ranging acoustic wave signals of characteristic spectra.(5) Control Software in the shipborne system sends the range finding END instruction by data cable, each water surface unit single-chip microcomputer receives instruction, stop to write down above-mentioned GPS position data, and store transferring in the shipborne system launch time of above-mentioned GPS position data, ranging acoustic wave signals of characteristic spectra by data cable; Each under water the unit single-chip microcomputer receive instruction, close the sound wave receiving trap, stop to write down above-mentioned upright position data, and the time of reception of above-mentioned upright position data and each ranging acoustic wave signals of characteristic spectra transferred in the shipborne system store.(6) data processing software in the shipborne system calls the GPS position data of above-mentioned each water surface unit, the launch time of ranging acoustic wave signals of characteristic spectra, each is the upright position data, the time of reception of each ranging acoustic wave signals of characteristic spectra of unit under water, carry out overall treatment, calculating, just can draw each position of unit under water.(7) data processing software in the shipborne system calls above-mentioned each position of unit under water, uses the method for interpolation to calculate the position of marine seismic streamer each point.
According to the measuring intervals of TIME that sets in advance, Control Software control towing cable position measuring system in the shipborne system carries out work according to above-mentioned measuring method, just can draw each position of unit under water continuously, thereby realize continuous coverage marine seismic streamer each point position.
Beneficial effect of the present invention: the present invention is by adopting one-way hydroacoustic ranging, be that acoustic emission apparatus is only installed in each water surface unit, the sound wave receiving trap is only installed in the unit under water, increased the operating distance of subaqueous sound ranging, reduced the interference of pinger hydrophone, group; By adopting ranging acoustic wave signals of characteristic spectra, promptly each water surface unit has been simplified each and the unit recognition methods of range finding acoustic signals has been reduced system complexity under water with its band transmit ranging acoustic wave signals of characteristic spectra of monopolizing.
Description of drawings
Fig. 1 is a system for measuring position of marine seismic streamer synoptic diagram of the present invention;
Fig. 2 is the structured flowchart of the water surface of the present invention unit;
Fig. 3 is the present invention's structured flowchart of unit under water.
Among the figure, the 1st, offshore shooting ship, the 2nd, the first guides of cable, the 3rd, the seismic origin, the 4th, towing cable controller, the 5th, cable tail buoy, the 6th, marine seismic streamer, the 7th, floating drum, the 8th, water surface unit electric supply installation, the 9th, water surface unit transducer, the 10th, pinger, the 11st, gps antenna, the 12nd, GPS receiver, the 13rd, water surface unit single-chip microcomputer, the 14th, unit transducer under water, the 15th, acoustic receiver, the 16th, prime amplifier, the 17th, bandpass filter, the 18th, unit single-chip microcomputer under water, the 19th, depth transducer, the 20th, unit electric supply installation under water.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.As Fig. 1, Fig. 2 and shown in Figure 3, the present invention includes offshore shooting ship shipborne system, water surface unit, unit, data cable and service cable under water.Shipborne system is installed on the offshore shooting ship 1.Shipborne system is made up of computer hardware, Control Software and data processing software.Control Software is used to control whole towing cable position measuring system, particularly to each water surface unit, unit sending controling instruction under water.Data processing software is used to handle, calculate the data of each water surface unit, unit transmission under water.
Several water surface unit are installed in respectively on the first guides 2 of cable, cable tail buoy 5 and the floating drum 7 by the towing of offshore shooting ship of offshore shooting ship 1, each marine seismic streamer 6, and with offshore shooting ship 1 at surface navigation.Water surface unit comprises water surface unit transducer 9, pinger 10, gps antenna 11, GPS receiver 12, water surface unit single-chip microcomputer 13 and water surface unit electric supply installation 8.Water surface unit transducer 9 and pinger 10 are formed acoustic emission apparatus, are used for to water emission characteristic frequency range range finding acoustic signals.Water surface unitary space is abundant, and high-power transducer can be installed, to increase subaqueous sound ranging operating distance.Gps antenna 11 and GPS receiver 12 are formed the GPS receiving trap, are used to receive gps signal, and calculate the GPS position data of water surface unit.Water surface unit single-chip microcomputer 13 comprises processor, reservoir, A/D converter, PORT COM, input/output port and clock.The PORT COM of water surface unit single-chip microcomputer 13 links to each other with the data cable of being drawn by offshore shooting ship 1; An input/output port of water surface unit single-chip microcomputer 13 links to each other with the input/output port of pinger 10, and the output port of pinger 10 links to each other with the input port of water surface unit transducer 9; Another input/output port of water surface unit single-chip microcomputer 13 links to each other with the input/output port of GPS receiver 12, and the input port of GPS receiver 12 links to each other with the output port of gps antenna 11.Water surface unit single-chip microcomputer 13 is used for instruction that the taken-over vessel loading system sends, transfers data to shipborne system; The guide sound wave transmitting device is opened or is closed, at predetermined instant with its band transmit ranging acoustic wave signals of characteristic spectra of monopolizing, and record launch time; Control begins or stops to write down the GPS position data.The input end of water surface unit electric supply installation 8 links to each other with the service cable that offshore shooting ship 1 is drawn, with from 1 power taking of offshore shooting ship; The output terminal of water surface unit electric supply installation 8 links to each other with inner each consumer in water surface unit, to power to inner each consumer in water surface unit.
Several are installed in respectively in the towing cable controller 4 of each marine seismic streamer 6 unit under water, and navigate by water under water with marine seismic streamer 6.The unit comprises under water unit transducer 14, acoustic receiver 15, prime amplifier 16, bandpass filter 17, unit single-chip microcomputer 18, depth transducer 19 and unit electric supply installation 20 under water under water under water.Wherein, unit transducer 14 and acoustic receiver 15 are formed the sound wave receiving trap under water, are used to receive the ranging acoustic wave signals of characteristic spectra of each water surface unit emission.Because unit transducer 14 only need receive and need not to launch acoustic signals under water, so its volume can be significantly smaller than above-mentioned water surface unit transducer 9.Prime amplifier 16, bandpass filter 17 be used for to the ranging acoustic wave signals of characteristic spectra that receives amplify, Filtering Processing.Depth transducer 19 is used to measure the upright position data of unit under water.Unit single-chip microcomputer 18 comprises processor, reservoir, A/D converter, PORT COM, input port, output port and clock under water.The PORT COM of unit single-chip microcomputer 18 links to each other with the data cable that offshore shooting ship 1 is drawn under water; The output port of unit single-chip microcomputer 18 links to each other with the input port of acoustic receiver 15 under water, and another input port of acoustic receiver 15 links to each other with the output port of unit transducer 14 under water; Unit single-chip microcomputer 18 input port links to each other with the output port of bandpass filter 17 under water, the input port of bandpass filter 17 links to each other with the output port of prime amplifier 16, and the input port of prime amplifier 16 links to each other with the output port of acoustic receiver 15; Another input port of unit single-chip microcomputer 18 links to each other with the output port of depth transducer 19 under water.Unit single-chip microcomputer 18 is used for instruction that the taken-over vessel loading system sends, transfers data to shipborne system under water; The guide sound wave receiving device is opened or is closed; The ranging acoustic wave signals of characteristic spectra of identification after prime amplifier 16, bandpass filter 17 handled, and write down the time of reception of each ranging acoustic wave signals of characteristic spectra; Control begins or stops to write down the upright position data.The input end of unit electric supply installation 20 links to each other with the service cable that offshore shooting ship 1 is drawn under water, with from 1 power taking of offshore shooting ship; The output terminal of unit electric supply installation 20 links to each other with inner each consumer in unit under water under water, to power to inner each consumer in unit under water.
The present invention uses the upright position data of the position data of any three water surface unit, unit under water to be measured and the distance of above-mentioned three water surface unit to unit under water to be measured, utilizes formula (1) to calculate the position data of unit under water to be measured.
(x-x
i)
2+(y-y
i)
2+(z-z
i)
2＝r
i 2，i＝1，2，3，4 (1)
In the formula
(x, y z) are the coordinate of unit under water to be measured;
(x
i, y
i, z
i) be the coordinate of water surface unit;
r
iDistance for water surface unit to unit under water to be measured.
The one-shot measurement course of work of the present invention is as follows.(1) Control Software in the shipborne system sends the instruction of calibration clock by data cable, and each water surface unit single-chip microcomputer 13 receives instruction, the calibration clock; Each unit single-chip microcomputer 18 reception instruction under water, the calibration clock.(2) Control Software in the shipborne system send to be prepared distance measuring instruction by data cable, and each water surface unit single-chip microcomputer 13 receives instruction, beginning with certain hour write down at interval by the GPS receiving trap calculate the GPS position data; Each unit single-chip microcomputer 18 reception instruction under water, beginning is write down the upright position data that recorded by depth transducer 19 at interval with certain hour.(3) Control Software in the shipborne system sends the beginning distance measuring instruction by data cable, and each water surface unit single-chip microcomputer 13 receives instruction, opens acoustic emission apparatus, at predetermined instant with its frequency range of monopolizing emission characteristic frequency range range finding acoustic signals in water; The sound wave receiving trap is opened in each unit single-chip microcomputer 18 reception instruction under water.(4) each under water the sound wave receiving trap of unit receive the ranging acoustic wave signals of characteristic spectra of each water surface unit emission in succession, prime amplifier 16, bandpass filter 17 and under water 18 pairs of ranging acoustic wave signals of characteristic spectra that receive of unit single-chip microcomputer handle in real time, discern, and write down the time of reception of each ranging acoustic wave signals of characteristic spectra.(5) Control Software in the shipborne system sends the range finding END instruction by data cable, each water surface unit single-chip microcomputer 13 receives instruction, stop to write down above-mentioned GPS position data, and store transferring in the shipborne system launch time of above-mentioned GPS position data, ranging acoustic wave signals of characteristic spectra by data cable; Each under water unit single-chip microcomputer 18 receive instruction, close the sound wave receiving trap, stop to write down above-mentioned upright position data, and the time of reception of above-mentioned upright position data and each ranging acoustic wave signals of characteristic spectra transferred in the shipborne system store.(6) data processing software in the shipborne system calls the GPS position data of above-mentioned each water surface unit, the launch time of ranging acoustic wave signals of characteristic spectra, each is the upright position data, the time of reception of each ranging acoustic wave signals of characteristic spectra of unit under water, carry out overall treatment, calculating, just can draw each position of unit under water.(7) data processing software in the shipborne system calls above-mentioned each position of unit under water, uses the method for interpolation to calculate the position of marine seismic streamer each point.
According to the measuring intervals of TIME that sets in advance, Control Software control towing cable position measuring system in the shipborne system carries out work according to above-mentioned measuring method, just can draw each position of unit under water continuously, thereby realize continuous coverage marine seismic streamer each point position.
Claims (1)
1. system for measuring position of marine seismic streamer based on one-way hydroacoustic ranging comprises offshore shooting ship shipborne system, water surface unit, unit, data cable and service cable under water: it is characterized in that shipborne system is installed on the offshore shooting ship (1); Several water surface unit are installed in offshore shooting ship (1) respectively, the first guides (2) of cable, on cable tail buoy (5) and the floating drum (7), water surface unit comprises water surface unit transducer (9), pinger (10), gps antenna (11), GPS receiver (12), water surface unit single-chip microcomputer (13) and water surface unit electric supply installation (8), water surface unit single-chip microcomputer (13) comprises processor, reservoir, A/D converter, PORT COM, input/output port and clock, the PORT COM of water surface unit single-chip microcomputer (13) links to each other with the data cable of being drawn by offshore shooting ship (1), an input/output port of water surface unit single-chip microcomputer (13) links to each other with the input/output port of pinger (10), the output port of pinger (10) links to each other with the input port of water surface unit transducer (9), another input/output port of water surface unit single-chip microcomputer (13) links to each other with the input/output port of GPS receiver (12), the input port of GPS receiver (12) links to each other with the output port of gps antenna (11), the input end of water surface unit electric supply installation (8) links to each other with the service cable that offshore shooting ship (1) is drawn, and the output terminal of water surface unit electric supply installation (8) links to each other with inner each consumer in water surface unit; Several are installed in respectively in each towing cable controller (4) unit under water, the unit comprises unit transducer (14) under water under water, acoustic receiver (15), prime amplifier (16), bandpass filter (17), unit single-chip microcomputer (18) under water, depth transducer (19) and unit electric supply installation (20) under water, unit single-chip microcomputer (18) comprises processor under water, reservoir, A/D converter, PORT COM, input port, output port and clock, the PORT COM of unit single-chip microcomputer (18) links to each other with the data cable that offshore shooting ship (1) is drawn under water, the output port of unit single-chip microcomputer (18) links to each other with the input port of acoustic receiver (15) under water, another input port of acoustic receiver (15) links to each other with the output port of unit transducer (14) under water, an input port of unit single-chip microcomputer (18) links to each other with the output port of bandpass filter (17) under water, the input port of bandpass filter (17) links to each other with the output port of prime amplifier (16), the input port of prime amplifier (16) links to each other with the output port of acoustic receiver (15), another input port of unit single-chip microcomputer (18) links to each other with the output port of depth transducer (19) under water, the input end of unit electric supply installation (20) links to each other with the service cable that offshore shooting ship (1) is drawn under water, and the output terminal of unit electric supply installation (20) links to each other with inner each consumer in unit under water under water; Described shipborne system comprises computer hardware, Control Software and data processing software.
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| EP2541282A1 (en) * | 2011-06-29 | 2013-01-02 | Sercel | Method and device of obtaining a node-to-surface distance in a network of acoustic nodes, corresponding computer program product and storage means |
| EP2607921B1 (en) * | 2011-12-19 | 2020-05-20 | Sercel | Method and device for managing the acoustic performances of a network of acoustic nodes arranged along towed acoustic linear antennas. |
| JP5966385B2 (en) * | 2012-01-27 | 2016-08-10 | 株式会社Ihi | Water obstacle equipment |
| US10031248B2 (en) * | 2014-12-23 | 2018-07-24 | Ion Geophysical Corporation | Real-time infill in marine seismic surveys using an independent seismic source |
| CN107064943B (en) * | 2016-11-16 | 2019-10-08 | 中国人民解放军海军工程大学 | A kind of ocean bottom cable fixed sonar system and localization method |
| CN106965905B (en) * | 2017-05-18 | 2019-05-17 | 国家海洋技术中心 | Marine acoustics measures buoyage |
| CN109302201B (en) * | 2018-07-30 | 2021-02-23 | 上海大学 | Small-sized ocean communication conversion device and ocean communication conversion method |
| CN112180449A (en) * | 2020-09-29 | 2021-01-05 | 上海交通大学 | Underwater sound wave mapping method and system |
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| US6839302B2 (en) * | 2000-05-04 | 2005-01-04 | Westerngeco | Acoustic emitters for use in marine seismic surveying |
| CN1656390A (en) * | 2002-05-23 | 2005-08-17 | 输入/输出公司 | Gps-based underwater cable positioning system |
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| GB2377203A (en) * | 2001-06-20 | 2003-01-08 | Brian Brunt | A guided power tool assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6839302B2 (en) * | 2000-05-04 | 2005-01-04 | Westerngeco | Acoustic emitters for use in marine seismic surveying |
| CN1656390A (en) * | 2002-05-23 | 2005-08-17 | 输入/输出公司 | Gps-based underwater cable positioning system |
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| CN101762823A (en) | 2010-06-30 |
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