CN109557333A - A method of based on navigation buoy data inversion sea surface current - Google Patents
A method of based on navigation buoy data inversion sea surface current Download PDFInfo
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- CN109557333A CN109557333A CN201811209727.5A CN201811209727A CN109557333A CN 109557333 A CN109557333 A CN 109557333A CN 201811209727 A CN201811209727 A CN 201811209727A CN 109557333 A CN109557333 A CN 109557333A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 5
- 238000000691 measurement method Methods 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 235000015170 shellfish Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aviation & Aerospace Engineering (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The invention discloses a kind of methods based on navigation buoy data inversion sea surface current, comprising the following steps: Step 1: laying navigation buoy in observation sea area, carries ocean current data measurin system；Its kinematic parameter is obtained Step 2: collecting buoy position data according to ocean current data measurin system and being modified；Step 3: collecting buoy position data according to ocean current data measurin system establishes buoy stress model；Step 4: by buoy in ocean current inversion algorithm analysis buoy stress model by current drag parameter；Step 5: buoy in buoy movement parameter in step 2 and step 3 is carried out the initial value that operation obtains observation sea area ocean current flow velocity size and Orientation by current drag parameter；Final ocean current flow velocity numerical value is obtained Step 6: being modified to the initial value of the ocean current flow velocity size and Orientation obtained in step 5.The present invention accurately measures the ocean current of specified sea areas by navigation buoy realization, improves the deficiency of traditional measurement method.
Description
Technical field
The present invention relates to Current Observations technical fields, are based on navigation buoy data inversion sea surface current more particularly to one kind
Method.
Background technique
Ocean current is to physics a variety of in ocean, chemistry, biology and geologic process and conveying salinity, chlorophyll and ocean heat mistake
The formation and variation of the climate and weather in journey and ocean overhead, play the role of important influence and restriction, simultaneously for people
For class activity, ocean current all has ocean development, navigation, military affairs, port construction, marine fishing and defence maritime meteorology disaster
There are great social and economic implications.The method of traditional sea flow velocity measuring in marine fixed current meter mainly by being surveyed
Amount can both have been subtracted compared to traditional measurement method using navigation buoy inverting ocean current using the progress inverting of altitude satellite data
The cost for buying instrument less also can avoid error caused by surface attachment of the marine organisms to instrument, and can be realized fixed point and survey
Measure ocean current.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, proposes a kind of based on navigation buoy data inversion
The method of sea surface current, specific technical solution are as follows:
A method of based on navigation buoy data inversion sea surface current, comprising the following steps:
Step 1: laying navigation buoy in observation sea area, ocean current data measurin system is carried；
It is obtained Step 2: being modified according to ocean current data measurin system collection buoy position value and air speed value
Kinematic parameter；Meanwhile quality, underwater penetration and the anchor of buoy are collected according to ocean current data measurin system
The actual parameter of chain length；
Step 3: establishing buoy stress model according to buoy movement parameter and actual parameter；
Step 4: by buoy in ocean current inversion algorithm analysis buoy stress model by current drag parameter；
Step 5: buoy in buoy movement parameter in step 2 and step 3 is carried out operation acquisition by current drag parameter
Observe the initial value of sea area ocean current flow velocity size and Orientation；
Final ocean current is obtained Step 6: being modified to the initial value of the ocean current flow velocity size and Orientation obtained in step 5
Flow velocity numerical value.
The ocean current data measurin system includes navigation buoy, GPS positioning instrument, anemobiagraph, data transmission unit and anchor chain；
The buoy top is connected with anemobiagraph, and position of centre of gravity is respectively arranged with GPS positioning instrument inside the buoy and data transmission is single
Member, the buoy lower part are connected with anchor chain.
Ocean current inversion algorithm described in step 4 includes the following steps:
3.1, the acceleration of motion for obtaining buoy is calculated according to buoy position value in buoy stress model；
3.2, according to buoy air speed value in buoy stress model according to formula (1) calculate obtain buoy by wind-stress；
R2=kqAd (1)
3.3, anchor chain pulling force suffered by buoy is calculated according to formula (2) according to buoy mooring line length in buoy stress model；
3.4, the gravity according to suffered by the Mass Calculation buoy of buoy in buoy stress model；
3.5, the buoyancy according to suffered by the underwater penetration value calculating buoy of buoy in buoy stress model；
3.6, the parameter according to known to the buoy that step 3.1~3.5 generate is established floating by Newton interpolation algorithm
Mark movement N-S governing equation obtains current drag parameter R1 suffered by buoy；
3.7, ocean current flow velocity V is obtained according to formula (3) according to known current drag parameter R1.
R1=C (ρ V^2)/2 Ω (3)
Beneficial effect
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
1, the inverting obtained by installing GPS positioning instrument combination buoy stress model in navigation buoy that the present invention uses
The method of ocean current with it is traditional at present ocean current flow velocity is obtained by current meter and satellite data inversion method compared with, it is clear that the party
Method can substantially reduce the cost for obtaining ocean current flow velocity, and the data for simply needing to use compared to satellite Retrieval this method algorithm
Measure it is small,.
2, the present invention can effectively solve the measurement error occurred due to the problems such as biological attachment.In addition to this, the anchor of buoy
Fixed point can need to change at any time according to measurement, to realize ocean current size and the side for measuring specified sea areas whenever and wherever possible
To.
Detailed description of the invention
Fig. 1 is navigation buoy measuring system instrument scheme of installation；
Fig. 2 is the resolving flow chart of the ocean current inversion algorithm.
Appended drawing reference:
1- buoy 2-GPS position indicator 3- data transmission set 4- anemobiagraph 5- anchor chain
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Invention describes a kind of methods based on navigation buoy data inversion sea surface current, refer to by oceanographic buoy
The upper method for carrying high-precision GPS position indicator and obtaining data and analyzing ocean current flow velocity size and Orientation by data, detailed process
It is as follows:
Step 1: laying navigation buoy 1 in observation sea area, and anchor point is fixed in anchor chain 5.Wherein carried in buoy
High-precision GPS position indicator 2, anemobiagraph 4 and data transmission set 3.All appts are all rigidly connected with buoy 1, installation
Mode is as shown in Figure 1 with position.GPS positioning instrument 2 is used to acquire the location parameter of buoy, longitude, latitude and height including buoy
The information such as journey；Anemobiagraph 4 is for measuring the wind-force size that buoy is at sea subject to；Data transmission set 3 is for transmitting data
To bank base.
Step 2: collecting buoy position data.The latitude and longitude information of buoy is obtained by GPS positioning instrument 2 and corrects buoy
Buoy movement track is obtained after posture, obtains the kinematic parameter of buoy, such as acceleration accordingly；And then establish buoy stress mould
Type, method for building up are as follows:
In addition to this buoy in water, is also tethered at cable mainly by the effect of the factors such as current drag, wind load
The pulling force of rope.
Currently, the formula for calculating ocean current frictional resistance is more, the most commonly used is be based on treadmill test and theory analysis institute in China
Obtained resistance calculation formulae, expression formula are as follows:
R1=C (ρ V^2)/2 Ω (3)
Wherein, V is seawater velocity.
The wind pressure acted in buoy standard type can be determined as the calculation formula given by " port engineering calculates specification ":
R2=kqAd (1)
According to the H.0. equilibrium analysis of shellfish support and rock well acute hearing to buoy stress, cable is in catenary curve shape, and its length
It can be determined by following calculating formula with stress:
By the force analysis to buoy it is found that flow force and ocean current flow velocity that buoy is subject to have certain correlativity,
Flow force can be found out according to the other known buoy movement equation that is forced through, obtain ocean current flow velocity referring next to empirical equation
Size and be modified with experimental data.The direction of flow velocity can also be determined by the motion profile direction of buoy.The core of method
Thought is exactly the flow velocity by the motion profile inverting ocean current of mooring buoys.
Step 4: in conjunction with buoy in step 2 acceptance of the bid kinematic parameter and step 3 by the calculation of current drag coaptation ocean current
Method obtains the initial value of the sea area ocean current flow velocity size and Orientation；As shown in Fig. 2 flow chart, pass through the collected number of buoy first
According to obtain the motion profile of buoy after buoy attitude rectification, which is embodiment strong suffered by buoy；So
Buoyancy, wind-force and anchor chain restraining force, gravity, the buoyancy that the known force obtained afterwards in conjunction with force analysis has buoy to be subject to, according to
Newton's laws of motion and movement N-S governing equation can resolve the current drag for showing that buoy is subject to, last according to current drag
Ocean current flow velocity is obtained with empirical equation R1=C (ρ V^2)/2 Ω of ocean current size.The specific method is as follows:
A. the positional value that buoy is obtained with GPS positioning instrument obtains air speed value suffered by buoy with anemobiagraph.According to actual measurement
Obtain the numerical value such as quality, underwater penetration, the length of chain cable of buoy.
B. the acceleration of motion that buoy is acquired with positional value acquires buoy according to wind pressure formula R2=kqAd with air speed value
Suffered wind-stress, the anchor chain pulling force formula provided with the length of chain cable of buoy according to H.0. shellfish support and rock well acute hearingAnchor chain pulling force suffered by buoy is calculated, gravity suffered by the Mass Calculation buoy with buoy, with entering water
Buoyancy suffered by depth calculation buoy；
C. buoy movement N-S governing equation is established according to Newton interpolation algorithm, is answered according to known acceleration, wind
Power, anchor chain pulling force, gravity, buoyancy acquire water flow pulling force R1 suffered by buoy by solving N-S governing equation.
D. it is utilized according to the water flow pulling force R1 acquired and is calculated based on treadmill test and the obtained current drag of theory analysis
Formula R1=C (ρ V^2)/2 Ω solve ocean current flow velocity V.Thus the initial value of the size and Orientation of ocean current flow velocity is obtained.
Step 5: being modified to the initial value of the ocean current flow velocity size and Orientation obtained in step 4, obtain to the end
As a result.Due to obtained in step 4 the result is that being obtained by empirical equation, it is therefore necessary to repeat experiment and join to correlation
Number is corrected to obtain more accurate result.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvements and changes can also be made, such modifications and variations are also answered
It is considered as the protection scope of invention.
Claims (3)
1. a kind of method based on navigation buoy data inversion sea surface current, comprising the following steps:
Step 1: laying navigation buoy in observation sea area, ocean current data measurin system is carried；
Its kinematic parameter is obtained Step 2: being modified according to ocean current data measurin system collection buoy position value and air speed value；
Meanwhile the quality of buoy, the actual parameter of underwater penetration and length of chain cable are collected according to ocean current data measurin system；
Step 3: establishing buoy stress model according to buoy movement parameter and actual parameter；
Step 4: by buoy in ocean current inversion algorithm analysis buoy stress model by current drag parameter；
It is observed Step 5: buoy in buoy movement parameter in step 2 and step 3 is carried out operation by current drag parameter
The initial value of sea area ocean current flow velocity size and Orientation；
Final ocean current flow velocity is obtained Step 6: being modified to the initial value of the ocean current flow velocity size and Orientation obtained in step 5
Numerical value.
2. according to claim 1 be based on navigation buoy data inversion sea surface current method, which is characterized in that the ocean current
Data measurin system includes navigation buoy, GPS positioning instrument, anemobiagraph, data transmission unit and anchor chain；The buoy top connection
There is anemobiagraph, position of centre of gravity is respectively arranged with GPS positioning instrument and data transmission unit inside the buoy, and the buoy lower part connects
It is connected to anchor chain.
3. the method for navigation buoy data inversion sea surface current according to claim 1, which is characterized in that
Ocean current inversion algorithm described in step 4 includes the following steps:
3.1, the acceleration of motion for obtaining buoy is calculated according to buoy position value in buoy stress model；
3.2, according to buoy air speed value in buoy stress model according to formula (1) calculate obtain buoy by wind-stress；
R2=kqAd (1)
3.3, anchor chain pulling force suffered by buoy is calculated according to formula (2) according to buoy mooring line length in buoy stress model；
3.4, the gravity according to suffered by the Mass Calculation buoy of buoy in buoy stress model；
3.5, the buoyancy according to suffered by the underwater penetration value calculating buoy of buoy in buoy stress model；
3.6, the parameter according to known to the buoy that step 3.1~3.5 generate is transported by the buoy that Newton interpolation algorithm is established
Dynamic N-S governing equation obtains current drag parameter R1 suffered by buoy；
3.7, ocean current flow velocity V is obtained according to formula (3) according to known current drag parameter R1；
R1=C (ρ V^2)/2 Ω (3).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433241A (en) * | 2020-11-09 | 2021-03-02 | 天津大学 | Submersible vehicle positioning method based on buoy |
| CN113405537A (en) * | 2021-07-20 | 2021-09-17 | 中国海洋大学 | Wave direction inversion method based on satellite navigation positioning |
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| CN101813476A (en) * | 2010-03-19 | 2010-08-25 | 天津大学 | Three-dimensional real-time monitoring system for offshore wave parameters |
| KR101360296B1 (en) * | 2013-11-15 | 2014-02-11 | 주식회사 범아엔지니어링 | Survey appratus of measurement system for visualizing 3d shape with measured data in the ocean |
| CN106940382A (en) * | 2017-03-22 | 2017-07-11 | 国家海洋局第二海洋研究所 | A kind of ocean current tester |
| CN107748360A (en) * | 2017-09-05 | 2018-03-02 | 浙江海洋大学 | Extra large table Wind-field Retrieval method and device |
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2018
- 2018-10-17 CN CN201811209727.5A patent/CN109557333B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813476A (en) * | 2010-03-19 | 2010-08-25 | 天津大学 | Three-dimensional real-time monitoring system for offshore wave parameters |
| KR101360296B1 (en) * | 2013-11-15 | 2014-02-11 | 주식회사 범아엔지니어링 | Survey appratus of measurement system for visualizing 3d shape with measured data in the ocean |
| CN106940382A (en) * | 2017-03-22 | 2017-07-11 | 国家海洋局第二海洋研究所 | A kind of ocean current tester |
| CN107748360A (en) * | 2017-09-05 | 2018-03-02 | 浙江海洋大学 | Extra large table Wind-field Retrieval method and device |
Non-Patent Citations (1)
| Title |
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| 周庆伟 等: "海流测量技术发展及应用", 《海洋测绘》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433241A (en) * | 2020-11-09 | 2021-03-02 | 天津大学 | Submersible vehicle positioning method based on buoy |
| CN113405537A (en) * | 2021-07-20 | 2021-09-17 | 中国海洋大学 | Wave direction inversion method based on satellite navigation positioning |
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