93 results about "Geodetic survey" patented technology

The invention discloses an InSAR (Interferometric Synthetic Aperture Radar) and GNSS (Global Navigation Satellite System) robust adaptive fusion method for high-precision three-dimensional surface deformation monitoring, which belongs to the technical field of space geodetic survey and remote sensing, and comprises the following steps of: constructing a time sequence deformation field based on a small baseline set time sequence InSAR processing technology, and resampling GNSS observation data to a grid consistent with the InSAR by using Kriging spatial interpolation; a Helmert variance component estimation method is adopted to adaptively estimate variance components of InSAR and GNSS data, and reasonable weight fixing of a multi-source observation value is achieved; iterative reweighted least square estimation is introduced, outlier influences in various observation data are dynamically restrained through a Tukey double-weight function, robust optimization of a fusion model is achieved, and therefore a high-precision three-dimensional deformation field is reconstructed. The method comprises the steps of Helmert weight fixing, IRLS robust, variance component updating and a closed-loop feedback mechanism of weight matrix optimization.

The invention relates to the technical field of geodetic survey and structural health monitoring, and discloses a GNSS-RTK coordinate domain error correction method, which comprises the following steps: acquiring GNSS-RTK dynamic observation data to form a mixed signal time sequence; executing an improved adaptive noise complete empirical mode decomposition algorithm on the sequence to obtain an intrinsic mode function component; identifying and eliminating high-frequency components representing Gaussian white noise based on an energy coefficient, and reconstructing residual components into a signal sequence after primary noise reduction; inputting the noise reduction sequence into a rapid independent component analysis model for blind source separation; and finally, carrying out sorting and phase and amplitude uncertainty correction on the separated independent components, and outputting a multi-path error model and a structure dynamic deformation signal. According to the method, the problem of blind source separation failure or low precision caused by strong noise covering source signal statistical characteristics is solved through a strategy of first noise reduction and then separation, and an effective physical signal can be accurately extracted from a strong noise background.

The invention discloses an ionospheric scintillation monitoring method based on a geodetic measurement receiver, which belongs to the technical field of satellite navigation, and comprises the following steps of: accurately eliminating non-scintillation errors by constructing an inter-station single-difference function model and an inter-station single-difference random model, extracting carrier phase residual errors by using a single epoch ambiguity fixing technology, and finally obtaining an ionospheric scintillation monitoring result. Establishing a reliable ionospheric scintillation monitoring index; according to the ionospheric scintillation monitoring method based on the geodetic measurement type receiver, high-precision real-time monitoring of ionospheric scintillation can be realized through a single-epoch ambiguity fixing technology under the condition of not depending on an external precision product, and reliable technical support is provided for space weather monitoring.

The invention discloses a three-dimensional elastic block-fault motion deformation coupling model construction method and system. Comprising the following steps: acquiring geodetic survey data of earth crust movement between earthquakes and an active fault distribution map, and dividing different active blocks; the movable blocks are associated with geodetic measurement data through spatial position attributes, and motion features of different blocks are distinguished; adjacent boundaries are extracted to serve as modeling boundary faults, and discretization processing is carried out; constructing a three-dimensional elastic block-fault motion deformation coupling model including block rotation, internal strain, fault normal velocity discontinuity counteracting, inclined fault positive slippage and negative dislocation response; inverting parameters of the three-dimensional elastic block-fault motion deformation coupling model by adopting a constrained least square method; and according to the coupling coefficient, identifying the potential pregnancy and earthquake concave-convex body on the fault. According to the method, a more complete inter-earthquake three-dimensional elastic model is established, and support is provided for accurate research of active fault coupling characteristics, recognition of gestational earthquake concave-convex bodies and judgment of major earthquake dangerous areas.

The invention discloses an optical fiber sensing-Beidou fusion dam safety multi-dimensional early warning system and method and application. The method comprises the steps that Beidou high-precision three-dimensional coordinate time sequences of key measuring points of a dam body and a near dam, optical fiber continuous strain fields / temperature fields (distributed) in the dam body, strain / temperature point values (quasi-distributed) of key parts and basic static information are collected; unifying a geodetic measurement coordinate system and NTP / PTP time reference, and preprocessing data; on the basis of a dam refined FEM assimilation engine, Beidou displacement is used as dynamic constraint, optical fiber data is used as verification observation quantity, EKF correction parameters are used for inverting a global stress-strain field, and Bayesian optimization is carried out to realize model evolution when residual errors are abnormal; and an M-HWI is constructed, four-level threshold values of normal-attention-early warning-alarm are compared, a response is triggered, early warning is pushed, and an abnormal region is visualized. According to the method, information islands are eliminated, the instability process is tracked in a refined manner, and the early warning accuracy, the diagnosis globality and the long-term monitoring reliability are improved.

The invention relates to methods for providing geodetic datum transformation information applicable to a region of the Earth, for use by a navigation satellite system (NSS) receiver and / or a processing entity capable of receiving data therefrom. In one embodiment, the method comprises: generating (s10a) similarity transformation parameters and, for each of a plurality of reference stations in the region, post-fit transformation residuals applicable to the reference station; and sending (s20a) the transformation parameters and output residuals applicable to output points, wherein an output residual is one of the post-fit transformation residuals or derived therefrom; and the distribution of the output points in the region depends on the distribution of the reference stations. The invention also relates to variants of the above-mentioned method, to methods for receiving and processing the geodetic datum transformation information, and to systems, computer programs, and computer program products for carrying out such methods.

The invention belongs to the technical field of space geodetic survey observation data inversion regional land water reserve change, and provides a method and related equipment for inversion of land water reserves based on a Slepian basis function combined with GNSS three-dimensional deformation, and the method comprises the steps: obtaining vertical and horizontal deformation observation values of GNSS through simulation; determining a Slepian primary function of the target area according to the boundary data and a preset maximum expansion order, and further determining a function relationship between a Slepian coefficient of GNSS three-dimensional deformation and a Slepian coefficient driven by mass load change; determining an observation equation according to the function relationship, and resolving the observation equation by adopting least square joint adjustment; and according to the Slepian coefficient driven by the mass load change, carrying out inversion on the regional land water reserves of the target region to obtain a regional land water reserve change result. The method has the beneficial effect that the precision and efficiency of regional land water reserve inversion are improved.

The invention relates to the technical field of geodetic surveying instruments and geological disaster monitoring, and discloses a geological environment displacement surveying system based on a GNSS multipath effect, and the system comprises a signal collection unit which is used for receiving a satellite signal and extracting a signal-to-noise ratio sequence; the interference feature separation unit is used for stripping a direct signal power component and generating a residual oscillation sequence; the geometric inversion calculation unit is used for generating a reference interferometric phase template in a height search domain, and generating a height-correlation map to lock the current vertical height by calculating and superposing correlation coefficients between the residual oscillation sequence and the reference interferometric phase template; according to the invention, through a spatial domain geometric matching mechanism, high-precision distance measurement is realized in a complex environment in which a satellite visual segmental arc is broken, dependence of a traditional spectral analysis method on observation duration is broken through, and signal-to-noise ratio data endogenesis is utilized to decouple observation station attitudes and environmental medium attributes. And the stability and the multi-dimensional perception capability are improved.

The invention discloses a relative motion positioning method, system and device of a multi-seabed beacon network, a medium and a product, and relates to the technical field of ocean geodetic measurement data processing, and the method comprises the steps: determining a priori value of sound velocity deviation of the multi-seabed beacon network; respectively constructing a quadratic polynomial model of each seabed beacon and a grouping adjustment function model of each sampling observation moment; initializing a quadratic polynomial model of each seabed beacon and a grouping adjustment function model of all sampling observation moments; performing iterative solution on the quadratic polynomial models of all the seabed beacons and the grouping adjustment function models of all the sampling observation moments by using a least square method so as to obtain seabed beacon motion models of all the seabed beacons; and when the current seabed beacon is observed at the current moment, substituting the current moment into the seabed beacon motion model of the current seabed beacon to obtain a motion three-dimensional coordinate of the current seabed beacon at the current moment. According to the invention, the relative positioning precision of the seabed beacons is improved.

1. Name of the product in this design: Geodetic Antenna. 2. Applications of this design: It is used for high-precision GNSS static observation, urban GNSS-CORS systems, health monitoring of large buildings, roads and bridges, rivers and seas, dams, etc., geodetic and engineering surveying, deformation monitoring and other occasions that require high-precision real-time dynamic monitoring of spatial position. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention relates to the field of gravity inversion technology, specifically a method for joint inversion of groundwater spatiotemporal variations from multi-source geodetic data. The method includes the following steps: Kalman filtering is used to recursively update the nearest neighbor covariance and variance records at the epoch level, simultaneously improving the spatial and temporal stability of groundwater states. This avoids amplifying the impact of single-epoch anomalies on the overall inversion results and maintains the traceability of water thickness change trends during periods of fluctuating observation quality. The Levenburg-Marquardt method is used to iteratively correct the water thickness trajectory within a time window, allowing gravity residuals and deformation residuals to jointly constrain the trajectory adjustment direction in a weighted manner, preventing anomaly adjustments from spreading to adjacent epochs. This gives the fluctuation range after the time series is expanded clear physical meaning. By establishing a hierarchical constraint relationship at the epoch and time window levels, the reliability and interpretability of groundwater changes in long-term assessment and anomaly detection scenarios are improved.

The present application relates to the field of geodetic surveying, and particularly relates to a method for determining altitude based on GNSS frequency signals of Chinese space station. Through obtaining data such as GNSS satellite precise orbit, clock error and earth rotation parameters from IGS analysis center, RINEX format data is obtained by using synchronous observation of space station and ground station receiver, and the gravity potential of space station observation moment is determined in combination with EIGEN-6C4 gravity field model. The frequency observation value is derived from the carrier phase observation value, the observation equation is established in the dual-frequency ionosphere elimination processing mode, the gravity potential difference between space station and ground station is solved, and finally the gravity potential and altitude of ground station are obtained. The present application can replace the traditional leveling and gravity measurement, significantly reduce the cost, overcome the environmental restriction, and support the cross-sea and cross-ocean height transfer and the global height datum unification.

The present application relates to geodetic and engineering surveying technical field, specifically to a kind of plane coordinate point cloud fitting arbitrary close degree error ellipse in control network design stage.The method includes: the pre-processing of control point coordinate point cloud, removes abnormal value;Accurate spatial precision evaluation density field is constructed to calculate grid point density value;According to the specified confidence, the density threshold value is calculated, the contour is extracted and the error ellipse parameter is fitted.The present application solves the ellipse fitting problem of any specified confidence of non-normal distribution point cloud by adaptive bandwidth kernel density estimation, and significantly improves the reliability of precision evaluation under complex scene.

The invention relates to a method for calculating a northbound gradient of a meridian component of a sea plumb line deviation, and provides a method for calculating the northbound gradient of the meridian component of the sea plumb line deviation aiming at the compensation requirement of the meridian component of the plumb line deviation of an inertial navigation system under the constraint of the position error of a sea motion carrier. And based on the completely normalized global gravitational potential coefficient, constructing a sea area plumb line deviation meridian component northbound gradient calculation model, and realizing sea area plumb line deviation meridian component northbound gradient calculation. The invention aims to improve the meridian component compensation capability of the vertical line deviation of the inertial navigation system under the constraint of the position error of the motion carrier and improve the navigation precision of the inertial navigation system.

The invention discloses a remote island reference-free control network autonomous construction and transmission method, which belongs to the technical field of geodetic survey and surveying and mapping engineering, and comprises the following steps: receiving sea surface laser ranging, land gravity, mobile platform images and accelerometer data; performing statistics on peak values of the laser ranging histograms to extract local average sea surface elevation; a relative geometric point cloud is generated based on image texture tracking in combination with an accelerometer calculation scale; calculating a vertical line inclination angle by using a difference value between the gravity data and an earth normal gravity field; and correcting a point cloud vertical component by using a difference value between a water line and a sea surface elevation, correcting a plane component by using an inclination angle, and outputting a control point. According to the invention, a mode of fusing sea surface laser ranging, mobile platform images, inertial data and land gravity data is adopted, and a local three-dimensional control network with unified scale, elevation reference and vertical line direction can be autonomously constructed under the condition of no external reference dependence.

This invention relates to the fields of geodesy and radar engineering technology, and discloses a method, apparatus, and electronic equipment for the directional deployment of corner reflectors. The method includes: determining two measurement reference points in the proposed deployment area of ​​the corner reflector and obtaining the geodetic coordinates of the measurement reference points, and then calculating the reference azimuth angle of the baseline between the measurement reference points relative to true north; using the reference azimuth angle as a reference, marking two auxiliary points in the proposed deployment area of ​​the corner reflector and determining the local physical baseline; obtaining the design azimuth angle of the corner reflector and calculating the azimuth angle difference between the design azimuth angle and the reference azimuth angle; and using the local physical baseline as a reference, directionally deploying the corner reflector according to the azimuth angle difference. The method provided by this invention can still stably obtain an absolute physical reference pointing to true north even in extreme electromagnetic environments such as substations and building complexes, realizing high-precision deployment of corner reflectors in areas with strong interference.

The application discloses a three-dimensional geomagnetic space information measuring total station, which comprises physical sensors, magnetic flux gate sensors, optical telescopes and a host computer, wherein the physical sensors and the magnetic flux gate sensors are connected with the host computer, the physical sensors comprise magnetic sensor probes, horizontal angle sensors, vertical angle sensors and distance measuring sensors; the host computer is composed of a WINCE system, the magnetic flux gate sensors convert analog signals into digital signals through AD converters, the physical sensors, the magnetic flux gate sensors and a single-chip microcomputer in the host computer communicate through a 6-pin RS-232 interface, and the application can utilize multidisciplinary comprehensive magnetic force sensors and electronic angle measuring total stations to integrate, establish a data calculation relationship model of three-dimensional geomagnetic space magnetic declination, magnetic inclination, magnetic north azimuth and magnetic north direction angle and develop a geomagnetic space information one-station automatic measuring instrument, i.e., a total station, on the basis of a geomagnetic space information measuring principle, considering a geodetic survey geometric element measuring method and an environment.

The invention discloses a polar shift forecasting method considering periodic time-varying characteristics, which belongs to the technical field of spatial geodetic survey, is used for polar shift forecasting and comprises the following steps: preparing a data set, constructing a polar shift complex time sequence and adaptively optimizing and determining an optimal periodic parameter by using a differential evolution algorithm. Constructing a complex field harmonic model to calculate a polar shift prediction value, and extrapolating to obtain a fitting prediction value; constructing an autoregression model, and calculating a residual error sequence forecast value; and adding the fitting forecast value and the residual error sequence forecast value to obtain a final polar shift forecast result. According to the method, the time-varying period parameters in the polar shift sequence are adaptively determined by introducing the differential evolution algorithm and the global optimization algorithm, so that more accurate fitting and forecasting of key elements such as the period, the amplitude and the phase change of the Cashler swing and the annual term in the polar shift signal are realized, and a more stable residual sequence is provided for an autoregression model; and the precision and the stability of polar shift, especially medium and long-term span forecasting, are remarkably improved on the whole.

This invention discloses a target positioning method, apparatus, device, and medium for optical observation. The target positioning method for optical observation collects and caches the relative distance and azimuth of the target using optical observation equipment. Upon detecting a target locking signal triggered by the type or usage of the carrying equipment, the data is immediately frozen and transmitted wirelessly to a mobile terminal. The mobile terminal combines the received data with its own positioning module's current location, calculates the target's geographic coordinates using a geodetic model, marks the location on a map interface, and generates a navigation path. This achieves automatic target location locking and geographic mapping after firing, effectively solving the problems of difficulty and low efficiency caused by the large difference between thermal imaging field of view and the actual landscape, requiring manual GPS repositioning in existing technologies. It significantly improves the accuracy and convenience of target search after long-range nighttime firing.

The invention discloses a highway slope settlement measurement method fusing GNSS and InSAR, and belongs to the technical field of geodetic survey and geological disaster monitoring, and the method comprises the steps: obtaining an earth surface dielectric characteristic fingerprint representing the electrical characteristics of a slope surface through calculation; calculating to obtain subsurface structure characteristic fingerprints representing slope subsurface structure characteristics; constructing a double-fingerprint coupling diagnosis model of a physical process for associating the earth surface dielectric characteristic fingerprint with the subsurface structure characteristic fingerprint, wherein the double-fingerprint coupling diagnosis model is configured to output a diagnosis result based on a change mode of the input fingerprint; the surface dielectric characteristic fingerprints and the subsurface structure characteristic fingerprints serve as coupling fingerprints to be input into a double-fingerprint coupling diagnosis model for calculation, and internal state parameters representing the loosening degree of the soil structure in the slope are obtained; the stability early warning information of the target slope area is generated, and the instability risk of the internal structure of the slope can be recognized in advance in a non-contact and large-area mode before macroscopic settlement of the slope occurs.

The invention relates to a sea area gravity anomaly northbound gradient calculation method, and provides a sea area gravity anomaly northbound gradient calculation method aiming at the gravity anomaly auxiliary navigation requirement of an inertial navigation system under the constraint of a sea area motion carrier position error. And based on the completely normalized global gravity potential coefficient, constructing a sea area gravity anomaly northbound gradient calculation model, and carrying out sea area gravity anomaly northbound gradient calculation. The invention aims to improve the gravity anomaly aided navigation capability of the inertial navigation system under the constraint of the position error of the motion carrier and improve the navigation precision of the inertial navigation system.

The utility model relates to the technical field of measuring supports, in particular to a geodetic survey observation target auxiliary support which comprises a supporting mechanism, and an adjusting mechanism is arranged on the top of the supporting mechanism. The supporting mechanism comprises a connecting frame, a connecting rod is fixedly connected to the inner side of the connecting frame, a supporting rod is rotatably connected to the surface of the connecting rod, a connecting hole is formed in the end, away from the connecting rod, of the supporting rod, a spring is fixedly connected to the inner side of the connecting hole, and a movable block is fixedly connected to the end, away from the inner side of the connecting hole, of the spring. The support has the advantages that the extending length of each inserting rod is adjusted according to the flatness of the ground, so that three supporting points of the support can be in close contact with the ground and obtain enough supporting force, the support can be effectively prevented from shaking or inclining even under the condition that the ground fluctuates greatly, a stable measuring platform is provided for a surveying instrument, and the surveying instrument is convenient to use. The auxiliary support can better adapt to various complex terrains.

The application relates to a land survey area measurement method, device, equipment and medium. The method comprises the following steps: pre-processing and scene complexity evaluation are performed on surveying and mapping images, a comprehensive state vector is generated in combination with a computing resource state and an aircraft state; the comprehensive state vector is input into a deep reinforcement learning decision model to obtain an inference configuration action; the surveying and mapping images are cropped and / or scaled according to the inference configuration action to generate adaptive input images, and a semantic segmentation model is used to perform forward inference on the adaptive input images to obtain a semantic segmentation result image; area results and geographical boundary information are generated and cached based on geographical reference information and the semantic segmentation result image; spatial fusion and deduplication processing are performed on all the surveying and mapping images based on the geographical boundary information and the area results, a target land class continuous distribution map is generated, and the total area of the target land class in the surveying and mapping area is calculated based on the target land class continuous distribution map. The method can improve the task completion rate and the overall surveying and mapping efficiency.

The invention relates to the technical field of geodetics and radar engineering, and discloses a directional laying method and device for a corner reflector and electronic equipment, and the method comprises the steps: determining two measurement reference points in a region where the corner reflector is to be laid, and obtaining the geodetic coordinates of the measurement reference points, resolving a reference azimuth angle of a reference line between the measurement reference points relative to the true north direction; taking the reference azimuth angle as a reference, marking two auxiliary points in a to-be-arranged area of the corner reflector, and determining a local entity reference line; obtaining a design azimuth angle of the corner reflector, and calculating an azimuth angle difference value between the design azimuth angle and the reference azimuth angle; according to the method provided by the invention, the absolute physical reference pointing to the true north can still be stably obtained in extreme electromagnetic environments such as a transformer substation and a building group, and high-precision layout of the corner reflector in a strong interference area is realized.

The invention discloses a hydraulic engineering deformation monitoring method, and relates to the field of satellite remote sensing and geodetic survey. The method comprises the following steps: synchronously acquiring monitoring data of a preset satellite navigation system and a synthetic aperture radar satellite on a monitored water conservancy project; monitoring data of a preset satellite navigation system is utilized to realize self-adaptive atmospheric water vapor chromatography, and an atmospheric phase screen is calculated; subtracting the atmospheric phase screen from the interferometric phase data of the synthetic aperture radar satellite to realize phase correction of the synthetic aperture radar satellite on the monitoring data of the monitored water conservancy project; inverting high-frequency water level data by using a reflection signal of a preset satellite navigation system; calculating an elastic deformation component based on the high-frequency water level data; and subtracting the optimized elastic deformation component from the monitoring data of the synthetic aperture radar satellite to obtain a non-elastic deformation component. And performing preset processing on the inelastic deformation component to obtain a health state index of the water conservancy project. The method is suitable for non-linear health state evaluation of water conservancy facilities.

The present application relates to a kind of continuous elevation measurement method and system based on SINS / LDV combination, belong to geodetic survey field.The system includes strapdown inertial navigation system, laser doppler velocimeter, UPS power supply and navigation computer, wherein, the angular motion and linear motion of sensitive carrier are used to strapdown inertial navigation system;Strapdown inertial navigation system is connected with laser doppler velocimeter and navigation computer respectively;Laser doppler velocimeter is connected with navigation computer, and UPS power supply is connected with strapdown inertial navigation system and laser doppler velocimeter respectively;In order to improve the precision of elevation measurement, the output of laser doppler velocimeter is triggered with the pulse output of strapdown inertial navigation system as benchmark, to prevent the data loss phenomenon caused by the inconsistency of internal crystal oscillator of strapdown inertial navigation system and laser doppler velocimeter.

The application discloses a coseismic dislocation amount calculation method and system based on monocular monitoring video images, belongs to the technical field of earthquake emergency monitoring and space geodetic survey, and sequentially completes video acquisition preprocessing, feature point partition, camera vibration correction and relative displacement calculation, sub-pixel displacement optimization, pixel-physical displacement conversion, coseismic dislocation parameter solving and sliding track reconstruction and result verification output. Image sequences are extracted from monocular monitoring video streams, tracking and correction windows are selected after distortion correction and scale calibration, the influence of camera shaking is eliminated, sub-pixel level displacement measurement is realized by combining a regularization algorithm, a mapping model is established by recalibrating objects to complete displacement conversion and component decomposition, sliding parameters are solved, and a track curve is drawn. The coseismic dislocation amount measurement is low in cost, high in precision and real-time, can capture complex fault sliding dynamics, and supplements a traditional measurement method, thereby providing key data support for earthquake emergency.

A unique system for the implementation of random number sequences generated based on user geodetic datum (pos / time). Geodetic information, being temporary in nature, can be propagated in position, time or both to provide dynamically updating PRNG seeding for any participant. The guaranteed uniqueness of the geodetic datum assures a single-time worldwide unique seed generation capability thereby allowing a PRNG to create a random number sequence with similar properties. This is based on the fact two user stations cannot occupy the same physical space at the same time. The invention is compatible with current implementations of mobile communications and equipment given the global acceptance / usage of embedded GNSS capabilities. Application examples using the invention's method of random number generation are provided for: encrypting a continuous data stream, automotive mobile ranging sensor and packet base encryption across a public network.

The application discloses a kind of single corner reflection-based SAR satellite three-dimensional positioning error correction method and system, according to the space-time characteristics of multi-source error in spaceborne SAR positioning process, i.e. in a certain area range, its system error, propagation path error and earth model error have spatial correlation, and three direction coordinates in radar coordinate system are independent of each other, error calculation is carried out using the signal of single corner reflector, to realize simple and effective high-precision positioning of whole scene SAR data. The method does not depend on correcting system error, earth model and propagation path delay error one by one, establishes unified correction model using ground corner reflector, realizes three-dimensional high-precision positioning of spaceborne SAR image target. The method provides precise positioning coordinates of SAR image target, provides basis for interpretation of SAR observation results in geographical coordinate system and fusion with other geodetic survey data. The application effectively improves the three-dimensional positioning accuracy of target point in spaceborne SAR image.

The present application belongs to the field of marine surveying and geodetic surveying, and discloses a far-sea GNSS buoy height reference transmission method combined with satellite altimeter, aiming to solve the technical problems of difficult transmission of 1985 national height reference in far-sea area and large height measurement error of GNSS buoy antenna, the method establishes height reference conversion relationship through shore-based leveling joint measurement, carries out precise positioning and calculation on far-sea GNSS buoy observation data, and retains effective sea surface information through low-pass filtering processing; combines satellite altimeter data to carry out space-time matching, inverses and dynamically corrects the height of buoy antenna, converts the ellipsoidal height of buoy sea surface into 1985 national height through geodetic datum difference correction, and finally outputs the results through quality evaluation. The method realizes accurate transmission of far-sea height reference and dynamic correction of the height of buoy antenna, guarantees the reliability of far-sea sea surface height calculation, and provides accurate height data support for far-sea marine observation, marine engineering and other fields.