CN109783846A - Tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy - Google Patents
Tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy Download PDFInfo
- Publication number
- CN109783846A CN109783846A CN201811483436.5A CN201811483436A CN109783846A CN 109783846 A CN109783846 A CN 109783846A CN 201811483436 A CN201811483436 A CN 201811483436A CN 109783846 A CN109783846 A CN 109783846A
- Authority
- CN
- China
- Prior art keywords
- uncertainty
- formula
- gnss
- buoy
- measurement
- 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.)
- Granted
Links
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy that the invention discloses a kind of, the following steps are included: establishing tidal level measurement model, determine the partial uncertainty in model, calculate separately the dynamic standard uncertainty of partial uncertainty, then the standard uncertainty of tidal level measurement result per minute is synthesized, standard uncertainty per minute is carried out sequentially in time to arrange the tidal level combined standard uncertainty sequence that can be obtained in observation period, finally calculate expanded uncertainty, Evaluation of Uncertainty method disclosed in this invention can be improved the accuracy of GNSS tidal level measurement buoy data result uncertainty evaluation, ensure that GNSS tidal level measurement buoy provides qualified reliable measurement result, GNSS tidal level measurement buoy is set preferably to serve oceanographic observation field.
Description
Technical field
The present invention relates to ocean field of measuring techniques, in particular to a kind of tidal level measurement based on GNSS oceanographic buoy is not true
Surely assessment method is spent.
Background technique
Uncertainty of measurement refers to that, according to obtained information, characterization assigns the non-negative parameter of tested magnitude dispersibility.Measurement is not
The evaluation of degree of certainty is to measure the essential step of work.The occasion of main application has: the uncertainty of particular result is commented
Fixed, general measure uncertainty evaluation and the calibration measurement ability etc. for evaluating laboratory.We are to based on GNSS oceanographic buoy
Tidal level measuring system carry out evaluation of uncertainty in measurement and belong to the uncertainty evaluation of ocean routine hydrographic survey.Ocean tidal level
One of the basic hydrographic features for belonging to ocean offshore and coastal waters observation, are marine resources development, marine ecology civilization construction, ocean
The movable basic datas such as scientific research, ocean science innovation, maritime rights and interests maintenance and Homeland Security guarantee.
Ocean scene, which is measured, to have different characteristics with measuring in land or laboratory, and in measurement process, which is tested
Damp buoy floats across the sea, as the fluctuating and fluctuation moment on sea level carry out catenary motion and horizontal shake；The ring of ocean
Border also changes at any time, and different sea level situations can bring different degrees of attitudes vibration, different weather conditions to buoy
Different influences can be caused to the quality of reception of GNSS electromagnetic wave；The sea level of buoy measurement is also changing over time.Therefore, from
From the point of view of measuring angle, in GNSS tidal observation buoy measurement process, measuring system, measurement environment and be measured all have time variation,
The features such as randomness and correlation.The measurement process is not only a kind of dynamic measurement, and is a kind of dynamic measurement amount.
Currently, have gray theory, bayesian theory and Monte Carlo method etc. for the main theory of dynamic measurement, they
The equation for calculating evaluation of uncertainty in dynamic measurement is different, and essence is consistent, and is ground evaluation of uncertainty in dynamic measurement as a function of time
Study carefully.Currently, not yet about the tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of tidal level uncertainties of measurement based on GNSS oceanographic buoy
Assessment method provides the standard of accuracy reference to be reached for ocean tidal level measurement data, preferably serves oceanographic observation neck
The purpose in domain.
In order to achieve the above objectives, technical scheme is as follows:
Tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy, comprising the following steps:
(1) tidal level measurement model is established,
In formula,
T is tidal level measurement result per minute；
N is the Instantaneous Sea Level height results quantity of interior buoy observation per minute；
HiFor interior i-th of Instantaneous Sea Level elevation result per minute；
(2) interior dynamic measurement results H per minuteiBetween positive strong correlation, related coefficient 1, by measurement functions derivation
Obtain sensitivity coefficientThereby determine that the combined standard uncertainty u of tidal level measurement result T per minutec
(T):
It needs to be determined that i-th of Instantaneous Sea Level elevation result H in per minutei,
Hi=H0i-hi-N (3)
In formula,
H0iI-th of geodetic height in per minute is measured after difference resolves for observation station；
hiFor GNSS antenna interior i-th of elevation correction per minute of observation station, i.e., under the dynamic environment of ocean, GNSS antenna phase
The vertical distance on position center to sea；
N is the elevation anomaly value that buoy measures sea area, which is acquired by model algorithm, is fixed value；
Three amounts in formula (3) are uncorrelated, thereby determine that i-th of Instantaneous Sea Level elevation result H in per minuteiStandard not
Degree of certainty u (H)i,
In formula,
u(H0)iFor H0iStandard uncertainty；
u(h)iFor hiStandard uncertainty；
U (N) is the standard uncertainty of N；
Formula (4) are substituted into formula (2), combined standard uncertainty u is calculatedc(T), by u per minutec(T) it presses
Tidal level combined standard uncertainty sequence u is arranged to obtain according to time sequencingc(T)j, wherein j represents jth minute in observation period；
(5) expanded uncertainty U is calculatedpj,
U99j=kp×uc(T)j (5)
In formula,
It determines that tidal level T is to be uniformly distributed, takes comprising Probability p=0.99, then Coverage factor kp=1.71.
In above scheme, H0iStandard uncertainty u (H0)iCalculation formula it is as follows:
In formula,
RiFor the half width in the GNSS measurement of higher degree result probable value section of i-th of sequence in dynamic measurement；
Coverage factor
In above scheme, hiStandard uncertainty u (h)iAssessment method it is as follows:
(1) GNSS antenna elevation correction h calculation formula is as follows:
H=h0×cosε×cosθ (7)
In formula,
H is the vertical distance of GNSS antenna phase center to sea under the dynamic environment of ocean；
h0GNSS antenna phase center is to the vertical distance on sea when for hydrostatic, and for the same buoy, which is to fix
Value；
ε and θ is respectively buoy dynamic roll angle and pitch angle, is dynamic measurement；
(2) there are three the uncertainty input quantities that can be seen that GNSS antenna elevation correction from formula (7), h in formula0It adopts
It is measured with total station, ε and θ are measured by attitude-measuring sensor built in buoy, therefore h0Uncorrelated to ε, θ, related coefficient is
0；ε and θ is measured simultaneously by same sensor, positive strong correlation between the two, related coefficient 1；It propagates and restrains according to uncertainty,
GNSS antenna elevation correction standard uncertainty u (h) composite formula is as follows in single Instantaneous Sea Level elevation result:
In formula,
u(h0) it is h0Standard uncertainty；
U (ε) is the standard uncertainty of ε；
aεFor the limits of error absolute value of ε；Coverage factor
U (θ) is the standard uncertainty of θ；
aθFor the limits of error absolute value of θ；Coverage factor
For h0Sensitivity coefficient；
For the sensitivity coefficient of ε；
For the sensitivity coefficient of θ；
(3) by evaluation u (h0) it is millimeter magnitude, the totality of GNSS antenna elevation correction does not know as centimetres, u
(h0) it is much smaller than u2, ignored in calculating process, therefore interior i-th of Instantaneous Sea Level elevation per minute in dynamic measurement
As a result HiStandard uncertainty u (H)iCalculation formula is as follows:
In formula,
For the buoy dynamic roll angle sensitivity coefficient of i-th of sequence in dynamic measurement, calculation formula is
For the buoy dynamic pitch angle sensitivity coefficient of i-th of sequence in dynamic measurement, calculation formula is
(4) formula (9) (10) (12) (13) are substituted into formula (11), h is calculatediStandard uncertainty u (h)i。
In above scheme, the calculation formula of the standard uncertainty u (N) of N is as follows:
In formula,
aNFor the limits of error, a is takenN=5cm,
Coverage factor is
Through the above technical solutions, the tidal level evaluation of uncertainty in measurement side provided by the invention based on GNSS oceanographic buoy
Method is decomposed into a system based on the understanding to measuring system structure and Measurement and Data Processing process, by prolonged dynamic measurement process
The static measurement process of column, and uncertainty evaluation is carried out to it.The sea-level elevation of the GNSS tidal observation buoy observes data sampling
Rate is 1Hz, the sea-level elevation measurement process of 1Hz is considered as static measurement, prolonged dynamic measurement process is considered as sample rate and is
The set of the static measurement of 1Hz.Comprehensive and accurate measurement model is established for every hertz of measurement data, it is each not true to analyze its
Surely the source for spending component, using GUM method by the uncertainty of measurement of second evaluation raw measurement results.Then according to raw observation
To the measurement model of tidal level result, the uncertainty of the final tidal level measurement result of GNSS tidal observation buoy is evaluated.
The assessment method can be improved the accuracy of GNSS tidal level measurement buoy data result uncertainty evaluation, it is ensured that
GNSS tidal level measures buoy and provides qualified reliable measurement result, and GNSS tidal level measurement buoy is made preferably to serve oceanographic observation
Field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is a kind of tidal level measuring principle schematic diagram based on GNSS oceanographic buoy disclosed in the embodiment of the present invention；
Fig. 2 is GNSS dynamic elevation RMS value sequence chart；
Fig. 3 is buoy dynamic roll angle sequence chart；
Fig. 4 is buoy dynamic pitch angle sequence chart；
Fig. 5 is GNSS dynamic elevation partial uncertainty u (H0)iSequence chart；
Fig. 6 is GNSS antenna orthometric correction partial uncertainty u (h)iSequence chart；
Fig. 7 is Instantaneous Sea Level elevation standard uncertainty u (H)iSequence chart；
Fig. 8 is tidal level combined standard uncertainty uc(T)jSequence chart；
Fig. 9 is tidal level expanded uncertainty U99jSequence chart.
Fig. 2, Fig. 3 and Fig. 4 are respectively that the original dynamic of the GNSS tidal observation buoy for use in the present invention intercepted observes data
Sequence, three kinds of data beginning and ending times are identical, and abscissa is the data sequence number being sequentially arranged in three figures, are divided into 1 second,
Ordinate is the amplitude of each data.Fig. 5 and Fig. 6 is respectively to pass through the Instantaneous Sea Level elevation that Fig. 2, Fig. 3 and Fig. 4 data calculate to move
State standard uncertainty u (H)iDynamic Uncertain component, abscissa is the data sequence number being sequentially arranged, interval with
Original observed data is identical, and ordinate is uncertain component amplitude.Fig. 7 is the Instantaneous Sea Level as obtained by Fig. 5 and Fig. 6 Data Synthesis
Elevation dynamic standard uncertainty sequence u (H)i, abscissa is the data sequence number being sequentially arranged, interval and Fig. 5, Fig. 6
Data are identical.Fig. 8 is the tidal level combined standard uncertainty sequence u of Fig. 7 Data Synthesisc(T)j, abscissa is to arrange in chronological order
The data sequence number of column, is divided into 1 minute.
Fig. 9 is the tidal level expanded uncertainty sequence U by Fig. 8 Data Synthesis99j, it is the most termination of offer of the invention
Fruit, abscissa are identical as Fig. 8.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
The present invention provides a kind of tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy, specific embodiment
It is as follows:
The tidal level measuring principle of GNSS oceanographic buoy as shown in Figure 1, with certain model GNSS tidal current survey buoy in Guangzhou
For South Sea branch office Changzhou island code head carries out test, tide level data is calculated by the following method.
1) GNSS antenna phase center elevation is resolved using Dynamic post-treatment technology.Basic process is: utilizing the world
The precise ephemeris and clock deviation file that GNSS Servers Organization (International GNSS Service, IGS) provides combine benchmark
The stand station IGS on periphery calculates base station in the coordinate of WGS84；Consider the space correlation of position error between base station and observation station
Property, the accurate three-dimensional coordinate in observation station [12-13] is obtained using the post processing difference location technology of carrier phase measurement.Processing
The Inertial Explorer software that the Canadian Novatel company that GNSS data uses develops, it can handle Beidou two simultaneously
Data are observed for navigation system and GPS system.
During data calculation, partial data observation quality is poor, and integer ambiguity can not be fixed, and causes calculation result
There are rough errors, need to carry out elimination of rough difference to the antenna phase center elevation calculated.Specific method is: in every 1 minute
Altitude data uses drawing to carry out elimination of rough difference up to criterion, finds out the average value of altitude data in 1 minuteAnd standard deviation sigma, if
I-th of value X thereiniMeetThen cast out as gross error.
2) in order to preferably inhibit the multipath effect of GNSS receiving antenna, the general above tide a distance of GNSS antenna
Installed, thus GNSS receiving antenna phase elevation need to use attitude data be modified after obtain the surveyed sea area of tidal observation equipment
Instantaneous Sea Level elevation.Correction formula is as follows:
In formula, HiIt is the Instantaneous Sea Level elevation in the surveyed sea area of equipment；H is GNSS antenna phase center elevation；h0It is that equipment is quiet
Only height of the GNSS antenna apart from sea when state；ε and θ is the instantaneous roll angle of equipment and pitch angle respectively.
3) Kalman filtering is carried out to obtained Instantaneous Sea Level elevation, removal is surged and the high-frequency signals such as noise.According to " sea
Foreign investigation specifications " in regulation about tidal observation method, sliding average is carried out to Instantaneous Sea Level elevation, is made between its data sampling
Every becoming 1 minute.
4) sea-level elevation that remote tidal observation device measuring obtains belongs to geodetic height, using reference ellipsoid as height datum.
Generally using national 85 height datums, tidal height can be subtracted by geodetic height to be observed the height anomaly in sea area and asks for tidal level observation at present
It obtains [17].The height anomaly in tested sea area can be sought using EGM2008 model.EGM2008 geoid's model is state, the U.S.
Family's Geospatial Intelligence Service passes through years of researches and summary, in the experience and theoretical basis of building earth gravity field model in the past
On, using PGM2007B as reference model, utilize the gravimetric data of GRACE satellite acquisition and the gravity anomaly number in the whole world 5 ' × 5 '
According to.By the formula of the model, the latitude and longitude coordinates in tested sea area are inputted, its height anomaly can be found out.
Then uncertainty evaluation is carried out to tidal level measurement result according to method described in Summary, specifically such as
Under:
Dynamic measurement results include GNSS dynamic elevation RMS value sequence Ri, i.e., the GNSS high of i-th of sequence in dynamic measurement
The half width (as shown in Figure 2) in journey measurement result probable value section, buoy dynamic roll angle sequence εiIt is (as shown in Figure 3), floating
Mark dynamic pitch angle sequence θiGNSS antenna phase center when the hydrostatic that measurement obtains when (as shown in Figure 4) and development buoy
To the vertical distance h on sea0；The data that inspection information obtains have εiAnd θiLimits of error absolute value aεAnd aθ。
Both both obtaining the limits of error by attitude-measuring sensor specification is 0.2 °, i.e., probable value section
Half width aεAnd aθIt is 0.2 ° and θ of stardard uncertairty angle value are as follows:Measurement obtains when developing buoy
Hydrostatic when GNSS antenna phase center to sea vertical distance h0=143.6cm is passed through according to the work of other researchers
The limits of error for testing elevation anomaly value are aN=± 5cm.
When being evaluated, by RiSubstitution formula (6) can obtain partial uncertainty u (H0)iSequence (as shown in Figure 5)；By εi、
θi、h0And εiAnd θiLimits of error absolute value aεAnd aθIt brings formula (9) (10) (12) (13) into, finally substitutes into formula (11)
In, obtain partial uncertainty u (h)iSequence (as shown in Figure 6), convolution (14) find out partial uncertainty u (N) value,
Then by u (H0)i、u(h)iFormula (3) are substituted into u (N), find out the standard of GNSS buoy measurement Instantaneous Sea Level elevation not
Degree of certainty u (H)iSequence (as shown in Figure 7), by all u (H) interior per minuteiSubstitution formula (2) finds out the mark of tidal level per minute
Quasi- uncertainty uc(T)；By u per minutec(T) tidal level combined standard uncertainty sequence u is arranged to obtain sequentially in timec
(T)j(as shown in Figure 8) finally calculates expanded uncertainty U using formula (5)pj(as shown in Figure 9).
Other existing evaluation of uncertainty in dynamic measurement assessment methods generally utilize analogue data be observation period in all data only
The same uncertainty evaluation is provided as a result, the present invention is based on the understandings to buoy structure, working environment and original observed data
And analysis, uncertainty evaluation is carried out respectively to each data result.The present invention and other evaluation of uncertainty in dynamic measurement assessment methods
It compares, not only increases the accuracy of evaluation of uncertainty in dynamic measurement evaluation result, and accurately describe entire observation in detail comprehensively
The quality of each data in period.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (4)
1. the tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy, which comprises the following steps:
(1) tidal level measurement model is established,
In formula,
T is tidal level measurement result per minute；
N is the Instantaneous Sea Level height results quantity of interior buoy observation per minute；
HiFor interior i-th of Instantaneous Sea Level elevation result per minute；
(2) interior dynamic measurement results H per minuteiBetween positive strong correlation, related coefficient 1, by obtaining spirit to measurement functions derivation
Quick coefficientThereby determine that the combined standard uncertainty u of tidal level measurement result T per minutec(T):
It needs to be determined that i-th of Instantaneous Sea Level elevation result H in per minutei,
Hi=H0i-hi-N (3)
In formula,
H0iI-th of elevation in per minute is measured after difference resolves for GNSS buoy；
hiFor observation station GNSS antenna per minute in i-th of elevation correction, i.e., under the dynamic environment of ocean, in GNSS antenna phase
The heart to sea vertical distance；
N is the elevation anomaly value that buoy measures sea area, which is acquired by model algorithm, is fixed value；
Three amounts in formula (3) are uncorrelated, thereby determine that i-th of Instantaneous Sea Level elevation result H in per minuteiStardard uncertairty
It spends u (H)i,
In formula,
u(H0)iFor H0iStandard uncertainty；
u(h)iFor hiStandard uncertainty；
U (N) is the standard uncertainty of N；
Formula (4) are substituted into formula (2), combined standard uncertainty u is calculatedc(T), by stardard uncertairty per minute
Degree carries out arranging the tidal level combined standard uncertainty sequence u that can be obtained in observation period sequentially in timec(T)j, wherein j generation
Jth minute in table observation period；
(3) expanded uncertainty U is calculatedpj,
U99j=kp×uc(T)j (5)
In formula,
It determines that tidal level T is to be uniformly distributed, takes comprising Probability p=0.99, then Coverage factor kp=1.71.
2. the tidal level evaluation of uncertainty in measurement method according to claim 1 based on GNSS oceanographic buoy, feature exist
In H0iStandard uncertainty u (H0)iCalculation formula it is as follows:
In formula,
RiFor the half width in the GNSS measurement of higher degree result probable value section of i-th of sequence in dynamic measurement；
Coverage factor
3. the tidal level evaluation of uncertainty in measurement method according to claim 1 based on GNSS oceanographic buoy, feature exist
In hiStandard uncertainty u (h)iAssessment method it is as follows:
(1) GNSS antenna elevation correction h calculation formula is as follows:
H=h0×cosε×cosθ (7)
In formula,
H is the vertical distance of GNSS antenna phase center to sea under the dynamic environment of ocean；
h0GNSS antenna phase center is to the vertical distance on sea when for hydrostatic, and for the same buoy, which is fixed value；
ε and θ is respectively buoy dynamic roll angle and pitch angle, is dynamic measurement；
(2) there are three the uncertainty input quantities that can be seen that GNSS antenna elevation correction from formula (7), h in formula0Using complete
Instrument of standing measures, and ε and θ are measured by attitude-measuring sensor built in buoy, therefore h0It is uncorrelated to ε, θ, related coefficient 0；ε and
θ is measured simultaneously by same sensor, positive strong correlation between the two, related coefficient 1；It propagates and restrains according to uncertainty, individually
GNSS antenna elevation correction standard uncertainty u (h) composite formula is as follows in Instantaneous Sea Level elevation result:
In formula,
u(h0) it is h0Standard uncertainty；
U (ε) is the standard uncertainty of ε；
aεFor the limits of error absolute value of ε；Coverage factor
U (θ) is the standard uncertainty of θ；
aθFor the limits of error absolute value of θ；Coverage factor
For h0Sensitivity coefficient；
For the sensitivity coefficient of ε；
For the sensitivity coefficient of θ；
(3) by evaluation u (h0) it is millimeter magnitude, the totality of GNSS antenna elevation correction does not know as centimetres, u (h0) remote
Less than u2, ignored in calculating process, therefore interior i-th of Instantaneous Sea Level elevation result H per minute in dynamic measurementi
Standard uncertainty u (H)iCalculation formula is as follows:
In formula,
For the buoy dynamic roll angle sensitivity coefficient of i-th of sequence in dynamic measurement, calculation formula is
For the buoy dynamic pitch angle sensitivity coefficient of i-th of sequence in dynamic measurement, calculation formula is
(4) formula (9) (10) (12) (13) are substituted into formula (11), h is calculatediStandard uncertainty u (h)i。
4. the tidal level evaluation of uncertainty in measurement method according to claim 1 based on GNSS oceanographic buoy, feature exist
In the calculation formula of the standard uncertainty u (N) of N is as follows:
In formula,
aNFor the limits of error, a is takenN=5cm,
Coverage factor is
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811483436.5A CN109783846B (en) | 2018-12-06 | 2018-12-06 | GNSS ocean buoy-based sea level measurement uncertainty evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811483436.5A CN109783846B (en) | 2018-12-06 | 2018-12-06 | GNSS ocean buoy-based sea level measurement uncertainty evaluation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109783846A true CN109783846A (en) | 2019-05-21 |
| CN109783846B CN109783846B (en) | 2022-12-06 |
Family
ID=66495723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811483436.5A Active CN109783846B (en) | 2018-12-06 | 2018-12-06 | GNSS ocean buoy-based sea level measurement uncertainty evaluation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109783846B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730883A (en) * | 2020-12-21 | 2021-04-30 | 自然资源部第一海洋研究所 | GNSS drifting floating blanket and method for measuring river water level height and gradient |
| CN114492680A (en) * | 2022-04-18 | 2022-05-13 | 国家海洋技术中心 | Buoy data quality control method and device, computer equipment and storage medium |
| CN117572467A (en) * | 2023-10-18 | 2024-02-20 | 澳门大学 | Multi-sea-condition tide level observation method and device, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376454A (en) * | 2012-04-12 | 2013-10-30 | 天宝导航有限公司 | Advanced global navigation satellite systems (gnss) positioning using precise satellite information |
| CN104567802A (en) * | 2015-01-06 | 2015-04-29 | 山东科技大学 | Survey line land-sea elevation transfer method employing integrated shipborne gravity and GNSS |
| CN106052795A (en) * | 2016-07-28 | 2016-10-26 | 中国石油天然气集团公司 | Method and device for acquiring tide level |
-
2018
- 2018-12-06 CN CN201811483436.5A patent/CN109783846B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376454A (en) * | 2012-04-12 | 2013-10-30 | 天宝导航有限公司 | Advanced global navigation satellite systems (gnss) positioning using precise satellite information |
| CN104567802A (en) * | 2015-01-06 | 2015-04-29 | 山东科技大学 | Survey line land-sea elevation transfer method employing integrated shipborne gravity and GNSS |
| CN106052795A (en) * | 2016-07-28 | 2016-10-26 | 中国石油天然气集团公司 | Method and device for acquiring tide level |
Non-Patent Citations (2)
| Title |
|---|
| M. S. BOS ET AL.: "Estimating absolute sea level variations by combining GNSS and Tide gauge data", 《INDIAN JOURNAL OF GEO-MARINE SCIENCES》 * |
| 王朝阳 等: "远距离GNSS潮位测量精度的影响因素研究", 《海洋技术学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730883A (en) * | 2020-12-21 | 2021-04-30 | 自然资源部第一海洋研究所 | GNSS drifting floating blanket and method for measuring river water level height and gradient |
| CN112730883B (en) * | 2020-12-21 | 2022-07-05 | 自然资源部第一海洋研究所 | GNSS drifting floating blanket and method for measuring river water level height and gradient |
| CN114492680A (en) * | 2022-04-18 | 2022-05-13 | 国家海洋技术中心 | Buoy data quality control method and device, computer equipment and storage medium |
| CN114492680B (en) * | 2022-04-18 | 2022-07-22 | 国家海洋技术中心 | Buoy data quality control method and device, computer equipment and storage medium |
| CN117572467A (en) * | 2023-10-18 | 2024-02-20 | 澳门大学 | Multi-sea-condition tide level observation method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109783846B (en) | 2022-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Löfgren et al. | Sea level time series and ocean tide analysis from multipath signals at five GPS sites in different parts of the world | |
| Woodworth et al. | Nineteenth and twentieth century changes in sea level | |
| CN106768179B (en) | The measurement method of tidal level based on the station continuous operation GNSS signal-to-noise ratio data | |
| Steele et al. | Theory and application of calibration techniques for an NDBC directional wave measurements buoy | |
| Farolfi et al. | Integration of GNSS and Satellite InSAR Data: Derivation of Fine-Scale Vertical Surface Motion Maps of Po Plain, Northern Apennines, and Southern Alps, Italy. | |
| CN109783846A (en) | Tidal level evaluation of uncertainty in measurement method based on GNSS oceanographic buoy | |
| CN106546954A (en) | A kind of deep-sea ultra-short baseline positioning precision method of inspection | |
| CN103364056A (en) | Scaling buoy of three-antenna multi-mode GNSS (Global Navigation Satellite System) satellite height gauge | |
| Yu | Tsunami-wave parameter estimation using GNSS-based sea surface height measurement | |
| CN106767383A (en) | The measuring method of the snow depth based on continuous operation GNSS stations signal-to-noise ratio data | |
| Stanchev et al. | Determination of the Black Sea area and coastline length using GIS methods and Landsat 7 satellite images | |
| Woodroffe et al. | Reference water level and tidal datum | |
| André et al. | Measuring sea level with GPS-equipped buoys: A multi-instruments experiment at Aix Island | |
| KR101063255B1 (en) | Real-time tide observation system using gps | |
| Peng et al. | Spatiotemporal ocean tidal loading in InSAR measurements determined by kinematic PPP solutions of a regional GPS network | |
| Garcia et al. | Accuracy of Florida Current volume transport measurements at 27 N using multiple observational techniques | |
| CN104567802A (en) | Survey line land-sea elevation transfer method employing integrated shipborne gravity and GNSS | |
| CN110850382B (en) | Method and system for evaluating measurement accuracy of interferometric radar altimeter | |
| Khedr et al. | Currents and sea level variability of Alexandria coast in association with wind forcing | |
| Xu et al. | Monitoring the vertical changes of a tidal flat using a MEMS accelerometer array | |
| Lyszkowicz et al. | Geocentric changes of the mean sea level of the Baltic Sea from altimeter and tide gauge data | |
| Feng et al. | Semidiurnal tides observed in the western equatorial Pacific during the Tropical Ocean‐Global Atmosphere Coupled Ocean‐Atmosphere Response Experiment | |
| Lycourghiotis | Developing a GNSS-on-boat based technique to determine the shape of the sea surface | |
| Foster | GPS and surveying | |
| Hay et al. | In Situ Validation of Altimetry and CFOSAT SWIM Measurements in a High Wave Environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |