CN205098417U - High buoy of measuring of GNSS sea earth - Google Patents
High buoy of measuring of GNSS sea earth Download PDFInfo
- Publication number
- CN205098417U CN205098417U CN201520884333.5U CN201520884333U CN205098417U CN 205098417 U CN205098417 U CN 205098417U CN 201520884333 U CN201520884333 U CN 201520884333U CN 205098417 U CN205098417 U CN 205098417U
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- gnss
- frame
- buoy
- antenna
- ball float
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Abstract
The utility model discloses a high buoy of measuring of GNSS sea earth, including A -frame, floater, GNSS antenna and instrument capsule. Instrument capsule lies in A -frame central authorities, and A -frame connects the floater, and the GNSS antenna is fixed and is covered at the pressurized cabin on instrument capsule upper portion, installs the antenna house on the GNSS sky line. The floater is solid light spheroid, and there is the round hole that runs through in floater central authorities, and the round hole of floater central authorities is passed to the branch that the A -frame apex angle stretches out, and the floater is fixed on A -frame's branch. Instrument capsule fixes on A -frame, and the instrument capsule top surface sets up sealed cabin cover, sets up power, GNSS receiver and attitude sensor in the instrument capsule. The GNSS antenna adopts the choke coil antenna, is connected with the GNSS receiver in the instrument capsule through coaxial cable. Utilize the GNSS basic station to carry out dynamic relative positioning to the GNSS buoy to acquire sea the earth height accurately according to buoy antenna height and gesture.
Description
Technical field
The utility model relates to ocean measuring instrument, and the sea geodetic height particularly for the calibration of altimeter sea height measures buoy.
Background technology
Over nearly 20 years, satellite altimeter has made tremendous contribution with its high precision and High Performance in ocean research, be widely used in ocean dynamical environment observation, as the application of ocean circulation, ocean tide, mesoscale eddies, upwelling, sharp side and the aspect such as geoid and gravitational anomaly.In order to ensure the accuracy that altimeter is measured, need to carry out absolute deviation calibration and long term drift calibration to altimeter observed result.
Altimeter calibration mainly utilizes the sea level altitude data of the geodetic height of on-site measurement sub-satellite point and altimeter to contrast, and calculates deviation therebetween and drift.Usual use GNSS (GlobalNavigationSatelliteSystem, global navigation satellite system) sea geodetic height is measured buoy and is carried out the calibration of altimeter sea height.Altimeter sea height determines calibration method: GNSS buoy cloth is placed on greater coasting area, static GNSS base station is laid in bank, gather GNSS satellite data respectively, the bank base GNSS base station absolute coordinates obtained is resolved by static state, and carrier phase difference is carried out to GNSS buoy divide Dynamic post-treatment, obtain buoy geodetic height, finally obtain sea geodetic height according to buoy antenna height, altimeter sea height result is calibrated.Wherein, buoy geodetic height is the geodetic height of buoy antenna R point, and buoy antenna is high for sea level is to the height of buoy antenna R point, and buoy geodetic height deducts buoy antenna height and sea geodetic height.
GNSS sea geodetic height measurement buoy is the major equipment in altimeter calibration process, but existing GNSS sea geodetic height measure buoy mostly by GNSS astronomical cycle on existing buoyancy aid, and these buoyancy aids do not carry out stability Design, different shape systems can bring various defect.
Wherein, by GNSS astronomical cycle on the Simple floats such as buoy quoit, its float structure is single buoyancy aid, small volume, GNSS antenna can press close to sea level usually, is very easily subject to the impact of the complex conditions such as severe sea condition Wave, ocean current, causes GNSS signal losing lock, and make a large amount of surface reflection spurious signals enter antenna, cause serious multipath effect; And single float buoy such as spherical, cylindrical, the tubbiness of application, do not carry out special attitude stability design, rock acutely at the complex condition such as ocean wave, ocean current, easily cause GNSS signal losing lock, and make a large amount of surface reflection spurious signals enter antenna, cause serious multipath effect.GNSS signal losing lock can cause shortage of data and multipath effect, can make to occur cycle slip in late time data solution process, reinitialize, and calculation result lacks and resolves precise decreasing and cannot obtain accurately sea geodetic height.
Also have, the part buoy installing GNSS antenna adopt existing in, lighthouse buoy, be arranged on highest point for ensureing GNSS antenna not blocked, this just causes GNSS buoy antenna high-leveled and difficult with Measurement accuracy, in buoy rocking process, antenna High variation is too violent simultaneously, causes antenna high level error larger.Simultaneously owing to lacking the sensor carrying out attitude measurement, cannot Obtaining Accurate buoy attitude, affect antenna high measurement accuracy, thus cause there is comparatively big error by during GNSS buoy geodetic height calculating sea geodetic height.
Utility model content
Measure buoy for existing GNSS sea geodetic height and affect the problem that sea geodetic height accurately measures, the GNSS sea geodetic height that the utility model releases a kind of Novel structure measures buoy, its object is to, buoy antenna and instrument compartment are arranged on the central authorities of the A-frame that three ball floats support, promote the stability of buoy, reduce surface reflection spurious signal and enter antenna, avoid GNSS signal losing lock, improve sea geodetic height measuring accuracy.
The GNSS sea geodetic height that the utility model relates to is measured buoy and is comprised A-frame, ball float, GNSS antenna and instrument compartment.Instrument compartment is positioned at A-frame central authorities, and A-frame connects ball float, and GNSS antenna is fixed on the plug hatch on instrument compartment top, GNSS antenna mounted antennas cover.
A-frame is equilateral triangle structure, and the top of three angles connects a ball float respectively.A-frame adopts stainless steel, and scribbles anti-rust paint.
Ball float is solid light spheroid, and the shape of three ball floats is identical with material.There are the circular hole run through in ball float central authorities, and the pole that A-frame drift angle stretches out is through the circular hole of ball float central authorities, and ball float is fixed on the pole of A-frame.Ultralow water absorption rate, resistant to corrosion elastic foam are filled in ball float inside, and outside face spray polyurea elastic material, makes ball float have good anti-extrusion and jolt capacity.
Instrument compartment is cylindrical structure, to be positioned at below A-frame and to be fixed on A-frame.Instrument compartment end face arranges plug hatch, arranges power supply, GNSS receiver and attitude sensor in instrument compartment.Power supply and GNSS receiver are fixed on the stainless steel frame of instrument compartment sidewall, and attitude sensor is fixed on plug hatch.The layout of whole instrument compartment keeps symmetrical, ensures that buoy center of gravity is placed in the middle, can not run-off the straight in water.
Power supply is the battery feed of ferric phosphate lithium cell, is arranged on the bottom in instrument compartment.Reduce the center of gravity of buoy by battery counterweight and ensure that buoy center of gravity is positioned at below sea.
Attitude sensor is the inertial measurement system of built-in three-axis gyroscope and triaxial accelerometer, can gather buoy and wave and heave information.Attitude sensor is fixed on the plug hatch on instrument compartment top.
Radome semicircular in shape, is made up of electromagnetic wave transparent material, is directly fixed on GNSS antenna by screw.GNSS antenna is connected with the GNSS receiver in instrument compartment by coaxial cable.
The GNSS sea geodetic height that the utility model relates to is measured buoy and is deployed in target marine site by ship department of Transport, fixing aboard ship by hawser.Line density is a little less than seawater, across the sea floating, ensures that buoy is only subject to horizontal direction application force, reduces the impact on buoy attitude.Buoy is across the sea floating, gathers GNSS navigation signal, and be stored in receiver by GNSS antenna.Built-in attitude sensor gathers buoy movement attitude information, and is stored in supporting data memory.Retrievable buoys and data after measurement completes, and GNSS navigation signal and attitude information are processed, obtain the sea geodetic height measuring marine site.
The instrument compartment that the GNSS sea geodetic height that the utility model relates to measures buoy is arranged on buoy central authorities, three ball floats are positioned at surrounding, the structural stability of buoy is ensure that by A-frame structure, ensure its attitude stabilization in the complex conditions such as ocean wave, ocean current, wind, overcome the deficiency that wide-angle tilt easily appears in single float buoy.By improving the attitude stability of buoy, ensure the stability of GNSS antenna receiving signal, prevent GNSS satellite navigation signal loss of lock, and adopt choke coil antenna to prevent surface reflection spurious signal from entering antenna to cause multipath effect, thus raising data acquisition quality, lay the foundation for high-precision sea geodetic height resolves.
The GNSS buoy that the utility model relates to possess dispose flexibly, feature that cost is low, altimeter calibration work can be carried out according to the satellite situation different time that passes by multiple area.GNSS buoy is also widely used in offshore tidal current survey, tsunami early warning etc.
Accompanying drawing explanation
Fig. 1 is the integral structure figure that GNSS sea geodetic height measures buoy;
Fig. 2 is that GNSS sea geodetic height measures buoy instrument compartment constructional drawing;
Fig. 3 is that GNSS sea geodetic height measures buoy instrument hatchcover constructional drawing.
Description of symbols in figure:
1, radome 2, ball float
3, plug hatch 4, A-frame
5, instrument compartment 6, GNSS receiver
7, attitude sensor
Detailed description of the invention
Further illustrate the technical solution of the utility model by reference to the accompanying drawings, Fig. 1 shows basic structure of the present utility model, Fig. 2 and Fig. 3 shows the basic structure of its instrument compartment and instrument hatchcover.As shown in the figure, the GNSS sea geodetic height that the utility model relates to is measured buoy and is comprised A-frame 4, ball float 2, GNSS antenna and instrument compartment 5.Instrument compartment 5 is positioned at A-frame 4 central authorities, and A-frame 4 connects ball float 2, GNSS antenna and is fixed on the plug hatch 3 on instrument compartment 5 top, and radome 1 is directly fixed on GNSS antenna by screw.
GNSS antenna adopts choke coil antenna, is fixed on the plug hatch 3 on instrument compartment 5 top.GNSS antenna is connected with the GNSS receiver 6 in instrument compartment 5 by coaxial cable.
A-frame 4 is in equilateral triangle structure, and the top of three angles connects a ball float 2 respectively.A-frame 4 is stainless steel, and scribbles anti-rust paint.
Ball float 2 is solid light spheroid, and the shape of three ball floats is identical with material.There are the circular hole run through in the central authorities of ball float 2, and the pole that A-frame 4 drift angle stretches out is through the circular hole of ball float 2 central authorities, and ball float 2 is fixed on the pole of A-frame 4.Ultralow water absorption rate, resistant to corrosion elastic foam are filled in ball float 2 inside, and outside face spray polyurea elastic material, makes ball float have good anti-extrusion and jolt capacity.
Instrument compartment 5, in cylindrical structure, to be positioned at below A-frame 4 and to be fixed on A-frame 4.Instrument compartment 5 end face arranges plug hatch 3, and plug hatch 3 is sealed by "O"-ring.Power supply, GNSS receiver 6 and attitude sensor 7 are set in instrument compartment 5.Power supply and GNSS receiver 6 are fixed on the stainless steel frame of instrument compartment 5 sidewall, and attitude sensor is fixed on plug hatch 3.The layout of whole instrument compartment keeps symmetrical, ensures that buoy center of gravity is placed in the middle, can not run-off the straight in water.
Ball float 2 is solid light spheroid, and the shape of three ball floats is identical with material.There are the circular hole run through in ball float 2 central authorities, and the pole that support drift angle stretches out is through the circular hole of ball float 2 central authorities, and ball float 2 is fixed on A-frame.Ultralow water absorption rate, resistant to corrosion elastic foam are filled in ball float 2 inside, and outside face spray polyurea elastic material, makes ball float 2 have good anti-extrusion and jolt capacity.
Power supply is the battery feed of ferric phosphate lithium cell, is arranged on the bottom in instrument compartment 5.Reduce the center of gravity of buoy by battery counterweight and ensure that buoy center of gravity is positioned at below sea.
Attitude sensor 7 is the inertial measurement system of built-in three-axis gyroscope and triaxial accelerometer, can gather buoy and wave and heave information, and attitude sensor 7 pairs of antennas are high to be corrected, and obtains sea geodetic height result of a measurement accurately.Attitude sensor 7 is fixed on the plug hatch 3 on instrument compartment top.
Claims (8)
1. GNSS sea geodetic height measures a buoy, it is characterized in that: comprise A-frame, ball float, GNSS antenna and instrument compartment; Instrument compartment is positioned at A-frame central authorities, and A-frame connects ball float, and GNSS antenna is fixed on the plug hatch on instrument compartment top, GNSS antenna mounted antennas cover;
There are the circular hole run through in described ball float central authorities, and the pole that A-frame drift angle stretches out is through the circular hole of ball float central authorities, and ball float is fixed on the pole of A-frame;
Described instrument compartment is cylindrical structure, to be positioned at below A-frame and to be fixed on A-frame; Instrument compartment end face arranges plug hatch, arranges power supply, GNSS receiver and attitude sensor in instrument compartment.
2. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described A-frame is equilateral triangle structure, and the top of three angles connects a ball float respectively.
3. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described ball float is solid light spheroid, and the shape of three ball floats is identical with material, and ultralow water absorption rate, resistant to corrosion elastic foam are filled in ball float inside.
4. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described power supply and GNSS receiver are fixed on the stainless steel frame of instrument compartment madial wall.
5. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described attitude sensor is fixed on plug hatch.
6. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described power supply is the battery feed of ferric phosphate lithium cell, is arranged on the bottom in instrument compartment.
7. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described GNSS antenna adopts choke coil antenna, and GNSS antenna is connected with the GNSS receiver in instrument compartment by coaxial cable.
8. GNSS sea according to claim 1 geodetic height measures buoy, it is characterized in that: described plug hatch is sealed by "O"-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884333.5U CN205098417U (en) | 2015-11-06 | 2015-11-06 | High buoy of measuring of GNSS sea earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884333.5U CN205098417U (en) | 2015-11-06 | 2015-11-06 | High buoy of measuring of GNSS sea earth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205098417U true CN205098417U (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520884333.5U Expired - Fee Related CN205098417U (en) | 2015-11-06 | 2015-11-06 | High buoy of measuring of GNSS sea earth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205098417U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253255A (en) * | 2015-11-06 | 2016-01-20 | 国家海洋技术中心 | GNSS (Global Navigation Satellite System) sea surface geodetic height surveying buoy |
| CN106229671A (en) * | 2016-08-30 | 2016-12-14 | 嘉善金昌电子有限公司 | The production method of metallic foams lightweight choke coil antenna and the antenna obtained thereof |
| CN110211317A (en) * | 2019-04-17 | 2019-09-06 | 中国水利水电科学研究院 | A kind of short range security system waterborne and device |
| CN110715648A (en) * | 2018-07-12 | 2020-01-21 | 深圳市蓝海绿洲科技有限公司 | Ocean monitoring system for realizing intelligent network and ocean monitoring equipment thereof |
| CN111409774A (en) * | 2020-05-09 | 2020-07-14 | 国家海洋技术中心 | GNSS buoy for measuring sea surface height |
| CN114383578A (en) * | 2022-02-10 | 2022-04-22 | 中国人民解放军61540部队 | Sea surface height measurement system and method based on ocean monitoring buoy |
| CN117068336A (en) * | 2023-07-14 | 2023-11-17 | 交通运输部水运科学研究所 | Real-time ship draft detection method and system based on RTK carrier phase difference |
-
2015
- 2015-11-06 CN CN201520884333.5U patent/CN205098417U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253255A (en) * | 2015-11-06 | 2016-01-20 | 国家海洋技术中心 | GNSS (Global Navigation Satellite System) sea surface geodetic height surveying buoy |
| CN106229671A (en) * | 2016-08-30 | 2016-12-14 | 嘉善金昌电子有限公司 | The production method of metallic foams lightweight choke coil antenna and the antenna obtained thereof |
| CN110715648A (en) * | 2018-07-12 | 2020-01-21 | 深圳市蓝海绿洲科技有限公司 | Ocean monitoring system for realizing intelligent network and ocean monitoring equipment thereof |
| CN110211317A (en) * | 2019-04-17 | 2019-09-06 | 中国水利水电科学研究院 | A kind of short range security system waterborne and device |
| CN110211317B (en) * | 2019-04-17 | 2020-09-18 | 中国水利水电科学研究院 | Waterborne short-range security system and device |
| CN111409774A (en) * | 2020-05-09 | 2020-07-14 | 国家海洋技术中心 | GNSS buoy for measuring sea surface height |
| CN114383578A (en) * | 2022-02-10 | 2022-04-22 | 中国人民解放军61540部队 | Sea surface height measurement system and method based on ocean monitoring buoy |
| CN114383578B (en) * | 2022-02-10 | 2024-03-15 | 中国人民解放军61540部队 | Sea surface height measurement system and method based on ocean monitoring buoy |
| CN117068336A (en) * | 2023-07-14 | 2023-11-17 | 交通运输部水运科学研究所 | Real-time ship draft detection method and system based on RTK carrier phase difference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20171106 |