CN114167450A - Beidou foundation enhancement system with high-precision positioning function - Google Patents
Beidou foundation enhancement system with high-precision positioning function Download PDFInfo
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- 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
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- 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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- 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
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/243—Demodulation of navigation message
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Abstract
The invention discloses a Beidou foundation enhancement system with high-precision positioning, which belongs to the technical field of Beidou foundation enhancement systems and comprises a user terminal and a reference station system; the user terminal is a handheld terminal of a user, and the user can send information through the handheld terminal to obtain space information required by the user; the user terminal is connected with a reference station system through a data communication network and provides all-dimensional spatial information service for users; according to the invention, the coordinate conversion models of all the places are constructed through the three-dimensional coordinate system data of the reference station and the city place coordinate coefficient data, when a user needs space information service, the coordinate conversion can be obtained through the corresponding place coordinate conversion model, the service speed is high, the positioning precision is high, the real-time broadcasting of a source list of a multi-coordinate system can be realized, and the plane coordinate system broadcasting capability of the system is improved.
Description
Technical Field
The invention belongs to the technical field of Beidou foundation enhancement systems, and particularly relates to a Beidou foundation enhancement system with high-precision positioning.
Background
The Beidou satellite navigation system is called as Beidou for short, is a independently developed and independently operated global satellite navigation system which focuses on the development requirements of national security and economic society in China, can provide high-precision and high-reliability positioning, navigation and time service for various users all day long in the global range, and is an important space infrastructure of the country.
As a great national weight device deployed in a world-ground integrated manner, the Beidou satellite provides important space-time information guarantee for the development of the economic society of China, can powerfully promote the development and the change of geographic information mapping work, efficiently assists the maintenance and the quick update of a national coordinate frame, improves the overall utilization rate and the achievement conversion rate of domestic basic geographic information resources, and widens the breadth and the depth of the geographic mapping field of China.
The Beidou foundation enhancement system is a chief designer and a grand family courtyard for the Beidou system, but the existing Beidou foundation enhancement system mainly covers urban areas with numerous population, is not comprehensive in coverage range, needs to improve the positioning accuracy of a playing signal, and cannot complete the multi-coordinate system concurrent source list broadcasting, so that the Beidou foundation enhancement system with high-accuracy positioning needs to be designed to solve the problems.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a Beidou foundation enhancement system with high-precision positioning, which has the characteristics of continuously optimizing a base station network, improving coverage comprehensiveness, being high in service speed and positioning precision, and improving the plane coordinate system and elevation synchronous broadcasting capability of the system.
In order to achieve the purpose, the invention provides the following technical scheme: a Beidou foundation enhancement system with high-precision positioning comprises a user terminal and a reference station system;
the user terminal is a handheld terminal of a user, and the user can send information through the handheld terminal to obtain space information required by the user;
the user terminal is connected with a reference station system through a data communication network and provides all-dimensional spatial information service for users;
the reference station system comprises an operation reference station network, a control server, an acquisition server and a data server;
the operation reference station network is connected with a user terminal through a data communication network, receives information sent by a user and broadcasts spatial information required by the user;
the operation reference station network is connected with a control server through a data communication network, provides space information with high positioning precision and high accuracy for the operation reference station network, and simultaneously optimizes the network type of the existing reference station network;
the control server is connected with an acquisition server through a wireless communication network and provides data acquisition support for the operation of the control server;
the acquisition server is connected with a data server through a wireless communication network and stores data acquired by the acquisition server.
Further, the control server comprises a second instruction input module for inputting an instruction for constructing a local coordinate conversion model, the second instruction input module is connected with a coordinate conversion module construction module for constructing a coordinate conversion model, the coordinate conversion module construction module is connected with a coordinate conversion model generation module for generating the coordinate conversion model, the coordinate conversion model generation module is connected with an application module retrieval module for retrieving the coordinate conversion model, the application module retrieval module is connected with a plurality of local coordinate conversion model application modules for partition storage application of different local coordinate conversion models, the application module retrieval module is connected with an operation reference station network through a data communication network and used for receiving information sent by a user, the plurality of local coordinate conversion model application modules are connected with the operation reference station network through the data communication network, for broadcasting the spatial information required by the user.
Further, the acquisition server comprises a data acquisition module and a data acquisition module required by model construction;
the data acquisition module required by model construction is connected with the coordinate conversion module construction module, and the data acquisition module required by model construction is connected with the data server and is used for acquiring required data for coordinate conversion model construction in the data server;
the data acquisition module is connected with the data server and used for acquiring required data from the data server.
Further, the data server comprises a three-dimensional coordinate system data storage module of the reference station network and a local coordinate coefficient data storage module;
the three-dimensional coordinate coefficient data storage module of the reference station network is respectively connected with the data acquisition module and the data acquisition module required by model construction, the data acquisition module acquires three-dimensional coordinate system data of the reference station network and stores the data into the data storage module of the three-dimensional coordinate system of the reference station network, the data acquisition module acquires local coordinate system data and stores the local coordinate system data into the data storage module of the local coordinate system, and the data acquisition module required by model construction can extract the three-dimensional coordinate system data of the reference station network and the local coordinate system data required by the coordinate conversion model from the data storage module of the three-dimensional coordinate system of the reference station network and the data storage module of the local coordinate system.
The control server further comprises a first instruction input module, wherein the first instruction input module is used for inputting an instruction for constructing a quasi-geoid model, the first instruction input module is connected with the quasi-geoid model constructing module and is used for constructing the quasi-geoid model, the quasi-geoid model constructing module is connected with the quasi-geoid model generating module and is used for generating the quasi-geoid model, the quasi-geoid model generating module is connected with the quasi-geoid model application module and is used for applying the quasi-geoid model, and the quasi-geoid model application module is connected with the coordinate conversion module constructing module and is used for providing an elevation abnormal value for constructing a local coordinate conversion model;
the model building module of the similar geodetic level is connected with a data acquisition module required by model building and is used for acquiring required data during model building of the model building module of the similar geodetic level from a data server;
the data server also comprises a model data storage module, the model data storage module is connected with the data acquisition module and the data acquisition module required by model building, the data about gravity and GNSS/level data acquired by the data acquisition module are stored in the model data storage module, and the data acquisition module required by model building can extract the gravity and GNSS/level data required by the quasi-geoid model from the model data storage module.
The control server further comprises a reference station network type optimization module, wherein the reference station network type optimization module is connected with the data acquisition module and is used for optimizing the network type of the existing reference station in real time, the reference station network type optimization module is connected with a reference station site comparison module, the reference station site comparison module is connected with the data acquisition module and is used for comparing the reference station sites to be newly added, the reference station site comparison module is connected with a reference station site list generation module to be newly added and is used for generating a list of the reference station sites to be newly added, and the reference station site list generation module to be newly added is connected with a reference station site list display module to be newly added and is used for displaying the reference station site list to be newly added.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the coordinate conversion models of all the places are constructed through the three-dimensional coordinate system data of the reference station and the city place coordinate coefficient data, when a user needs space information service, the coordinate conversion can be obtained through the corresponding place coordinate conversion model, the service speed is high, the positioning precision is high, the real-time broadcasting of a source list of a multi-coordinate system can be realized, and the plane coordinate system broadcasting capability of the system is improved.
2. The invention can realize the synchronous broadcasting of plane coordinates and elevations by acquiring gravity and GNSS/leveling data, taking an earth gravity field model as a reference gravity field, constructing a quasi-geoid model by a second-class Helmert agglutination method and combining the multi-coordinate broadcasting service.
3. The method collects the site address of the existing reference station in real time, optimizes the existing reference station by adopting the Delaunay triangular network layout, displays the optimization result on the system display, and enables an operator to perform feasibility analysis according to the newly added reference station site optimized by the system, and the newly added reference station site is added under the condition of strong feasibility, so that the network type formed by the reference station sites is more reasonable, and the signal broadcasting capability in the coverage range is improved.
4. The invention can improve the accuracy, reliability and universality of mapping data position information, can promote the application of the Beidou ground enhancement system in the fields of natural resource and planning, urban management, transportation, water conservancy and water conservancy, cultural relic protection and the like, improves the modernization level of the system, and realizes Beidou fusion and innovative application.
Drawings
FIG. 1 is a structural block diagram of a Beidou foundation enhancement system for high-precision positioning in the invention;
FIG. 2 is a block diagram of the detailed structure of FIG. 1 according to the present invention;
FIG. 3 is a block diagram illustrating a detailed structure of the local structure of FIG. 2 according to the present invention;
in the figure: 1. a user terminal; 2. a reference station system;
21. operating a reference station network; 22. a control server; 23. an acquisition server; 24. a data server;
221. a first instruction input module; 222. a coordinate conversion module construction module; 223. a reference station comparison module; 224. a reference station list generation module to be newly added; 225. a list display module of the sites of the reference station to be newly added; 226. a reference station network type optimization module; 227. a coordinate conversion model generation module; 228. a local coordinate transformation model application module; 229. an application module retrieval module; 2290. a second instruction input module; 2291. a quasi-geoid level model building module; 2292. a quasi-geoid model generation module; 2293. a geodetic level model application module;
231. a data acquisition module required by model construction; 232. a data acquisition module;
241. a model data storage module; 242. a three-dimensional coordinate system data storage module of the reference station network; 243. and a local coordinate coefficient data storage module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides the following technical solutions: a Beidou foundation enhancement system with high-precision positioning comprises a user terminal 1 and a reference station system 2;
the user terminal 1 is a handheld terminal of a user, and the user can send information through the handheld terminal to obtain space information required by the user;
the user terminal 1 is connected with a reference station system 2 through a data communication network to provide an all-dimensional spatial information service for users;
the reference station system 2 comprises an operation reference station network 21, a control server 22, an acquisition server 23 and a data server 24;
the operation reference station network 21 is connected with the user terminal 1 through a data communication network, receives information sent by a user, and broadcasts spatial information required by the user;
the operation reference station network 21 is connected with a control server 22 through a data communication network, provides space information with high positioning precision for the operation reference station network 21, and simultaneously optimizes the network type of the existing reference station network;
the control server 22 is connected with an acquisition server 23 through a wireless communication network to provide data acquisition support for the operation of the control server 22;
the acquisition server 23 is connected to a data server 24 through a wireless communication network, and stores data acquired by the acquisition server 23.
Specifically, the control server 22 includes a second instruction input module 2290 for inputting an instruction for constructing a local coordinate transformation model, the second instruction input module 2290 is connected to a coordinate transformation module construction module 222 for constructing a coordinate transformation model, the coordinate transformation module construction module 222 is connected to a coordinate transformation model generation module 227 for generating a coordinate transformation model, the coordinate transformation model generation module 227 is connected to an application module retrieval module 229 for retrieving a coordinate transformation model, the application module retrieval module 229 is connected to a plurality of local coordinate transformation model application modules 228 for partitioned storage applications of different local coordinate transformation models, the application module retrieval module 229 is connected to the operation reference station network 21 through a data communication network for receiving information sent by a user, the plurality of local coordinate transformation model application modules 228 are connected to the operation reference station network 21 through a data communication network, for broadcasting the spatial information required by the user.
Specifically, the acquisition server 23 includes a data acquisition module 231 and a data acquisition module 232 required for model construction;
the data acquisition module 231 required for model construction is connected with the coordinate conversion module construction module 222, and the data acquisition module 231 required for model construction is connected with the data server 24 and is used for acquiring required data for coordinate conversion model construction in the data server 24;
the data acquisition module 232, the data acquisition module 232 is connected to the data server 24, and is used for acquiring the required data from the data server 24.
Specifically, the data server 24 includes a three-dimensional coordinate system data storage module 242 of the reference station network and a local coordinate coefficient data storage module 243;
the three-dimensional coordinate coefficient data storage module 242 of the reference station network is characterized in that the three-dimensional coordinate system data storage module 242 of the reference station network is respectively connected with the data acquisition module 231 and the data acquisition module 232 required by model construction, the three-dimensional coordinate system data about the reference station network acquired by the data acquisition module 232 is stored in the three-dimensional coordinate system data storage module 242 of the reference station network, the local coordinate coefficient data about the local coordinate acquired by the data acquisition module 232 is stored in the local coordinate coefficient data storage module 243, and the three-dimensional coordinate system data about the reference station network and the local coordinate system data required by the coordinate conversion model can be extracted from the three-dimensional coordinate coefficient data storage module 242 of the reference station network and the local coordinate system data storage module 243 of the model construction by the data acquisition module 231 required by the model construction.
The working principle of the embodiment is as follows:
the data acquisition module 232 acquires three-dimensional coordinate system data of the reference station network and plane coordinate system data of the city place through a data communication network, and respectively transmits the acquired data to the three-dimensional coordinate system data storage module 242 of the reference station network and the plane coordinate system data storage module 243 of the place coordinate through a wireless communication network for storage;
when a local coordinate conversion model needs to be established, a command for establishing the local coordinate conversion model is input through the second command input module 2290, the second command input module 2290 transmits the command to the coordinate conversion module establishing module 222, the data acquisition module 231 required for triggering model establishment acquires data stored in the reference station network three-dimensional coordinate coefficient data storage module 242 and the local coordinate coefficient data storage module 243 and enters the coordinate conversion module establishing module 222, the coordinate conversion module establishing module 222 establishes a coordinate conversion model according to the acquired data and transmits the established coordinate conversion model to the coordinate conversion model generating module 227, the coordinate conversion model generating module 227 generates a coordinate conversion model and transmits the generated coordinate conversion model to the application module retrieving module 229, the application module retrieving module 229 retrieves models in the plurality of local coordinate conversion model application modules 228, if the local coordinate conversion model application module 228 in which the coordinate conversion model is stored has a place name that coincides with the place name of the reconstructed coordinate conversion model, the application module retrieving module 229 replaces the coordinate conversion model in the local coordinate conversion model application module 228, and if the local coordinate conversion model application module 228 in which the coordinate conversion model is stored does not have a place name that coincides with the place name of the reconstructed coordinate conversion model, the application module retrieving module 229 stores the coordinate conversion model in the local coordinate conversion model application module 228 of the new area, and waits for application;
the construction process of the model in the process comprises the following steps: the method comprises the steps of enabling collected three-dimensional coordinate system data of a reference station network to correspond to urban local plane coordinate coefficient data subjected to coordinate conversion one by one to obtain a data set, dividing the data set into a training set and a verification set, analyzing the training set by utilizing an FP-Growth algorithm, determining a strong association rule between the three-dimensional coordinate system data and the urban local coordinate system data to obtain an initial coordinate conversion model, and adjusting the initial coordinate conversion model by utilizing the verification set to obtain a coordinate conversion model;
when a user needs to use the spatial information service, the user terminal 1 sends information to the operation reference station network 21, the operation reference station network 21 transmits the sent information to the application module retrieval module 229 through a data communication network, the application module retrieval module 229 retrieves where the sent information belongs to a city, the retrieval is completed, the information is transmitted to the corresponding local coordinate conversion model application module 228, the coordinate conversion model in the corresponding local coordinate conversion model application module 228 converts the coordinates, the converted coordinates are transmitted to the operation reference station network 21 through the data communication network, and the operation reference station network 21 transmits the converted coordinates to the user terminal 1 through the data communication network.
Example 2
The present embodiment is different from embodiment 1 in that:
specifically, the control server 22 further includes a first instruction input module 221, configured to input an instruction for constructing the quasi-geoid model, where the first instruction input module 221 is connected to a quasi-geoid model constructing module 2291, configured to construct the quasi-geoid model, the quasi-geoid model constructing module 2291 is connected to a quasi-geoid model generating module 2292, configured to generate the quasi-geoid model, the quasi-geoid model generating module 2292 is connected to a quasi-geoid model applying module 2293, configured to apply the quasi-geoid model, and the quasi-geoid model applying module 2293 is connected to the coordinate transformation module constructing module 222, and configured to provide an abnormal value for constructing the local coordinate transformation model;
the quasi-geoid model building module 2291 is connected to the data acquisition module 231 required for model building, and is configured to obtain data required by the model building module 2291 from the data server 24;
the data server 24 further includes a model data storage module 241, the model data storage module 241 is connected to the model building data acquisition module 231 and the data acquisition module 232, the data about gravity and GNSS/level data acquired by the data acquisition module 232 are stored in the model data storage module 241, and the model building data acquisition module 231 can extract gravity and GNSS/or level data required by the quasi-geoid model from the model data storage module 241.
The working principle of the embodiment is as follows:
when a quasi-geodetic level model needs to be established, an instruction for establishing the quasi-geodetic level model is input through the first instruction input module 221, the first instruction input module 221 transmits the instruction to the quasi-geodetic level model establishing module 2291, the data acquisition module 231 required for triggering model establishment acquires data stored in the model data storage module 241 and enters the quasi-geodetic level model establishing module 2291, the quasi-geodetic level model establishing module 2291 establishes the quasi-geodetic level model according to the acquired data, the established quasi-geodetic level model is transmitted to the quasi-geodetic level model generating module 2292, the quasi-geodetic level model generating module 2292 generates the quasi-geodetic level model, the generated quasi-geodetic level model is transmitted to the quasi-geodetic level model application module 2293, and the quasi-geodetic level model application module 2293 provides the number of abnormal values for model establishment when the coordinate conversion module 222 establishes the coordinate conversion model Accordingly, the accuracy of the model is improved.
Example 3
The present embodiment is different from embodiment 2 in that:
specifically, the control server 22 further includes a reference station network type optimization module 226, the reference station network type optimization module 226 is connected to the data acquisition module 232 and is configured to optimize the network type of the existing reference station in real time, the reference station network type optimization module 226 is connected to a reference station site comparison module 223, the reference station site comparison module 223 is connected to the data acquisition module 232 and is configured to compare a reference station site to be newly added, the reference station site comparison module 223 is connected to a reference station site list generation module 224 to be newly added and is configured to generate a list of reference station sites to be newly added, and the reference station site list generation module 224 to be newly added is connected to a reference station site list display module 225 to be newly added and is configured to display the list of reference station sites to be newly added.
The working principle of the embodiment is as follows:
the data acquisition module 232 transmits the acquired address data of the existing reference station site to the reference station network optimization module 226 and the reference station site comparison module 223 respectively, the reference station network optimization module 226 adopts a Delaunay triangular network layout to optimize the network type of the existing reference station network in real time, and transmits the optimized reference station network to the reference station site comparison module 223, the reference station site comparison module 223 compares the position of the existing reference station site with the position of the optimized reference station site, and transmits the reference station site to be newly added to the reference station site list generation module 224, the reference station site list generation module 224 generates a list form for the reference station site to be newly added, and transmits the list to the reference station site list display module 225 for display, the system operator performs feasibility evaluation according to the reference station site to be newly added, and newly adds the reference station site under the condition of strong feasibility, the purpose of optimization is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A Beidou foundation enhancement system with high-precision positioning is characterized by comprising a user terminal (1) and a reference station system (2);
the user terminal (1) is a handheld terminal of a user, and the user can send information through the handheld terminal to obtain space information required by the user;
the user terminal (1) is connected with a reference station system (2) through a data communication network and provides all-dimensional spatial information service for users;
the reference station system (2) comprises an operation reference station network (21), a control server (22), a collection server (23) and a data server (24);
the operation reference station network (21) is connected with the user terminal (1) through a data communication network, receives information sent by a user, and broadcasts spatial information required by the user;
the operation reference station network (21) is connected with a control server (22) through a data communication network, so that space information with high positioning precision and high accuracy is provided for the operation reference station network (21), and the network type of the existing reference station network is optimized;
the control server (22) is connected with an acquisition server (23) through a wireless communication network, and provides data acquisition support for the operation of the control server (22);
the acquisition server (23) is connected with a data server (24) through a wireless communication network, and the data acquired by the acquisition server (23) are stored.
2. The Beidou foundation enhancement system of high precision positioning according to claim 1, characterized in that: the control server (22) comprises a second instruction input module (2290) for inputting instructions for constructing a local coordinate conversion model, the second instruction input module (2290) is connected with a coordinate conversion module construction module (222) for constructing a coordinate conversion model, the coordinate conversion module construction module (222) is connected with a coordinate conversion model generation module (227) for generating the coordinate conversion model, the coordinate conversion model generation module (227) is connected with an application module retrieval module (229) for retrieving the coordinate conversion model, the application module retrieval module (229) is connected with a plurality of local coordinate conversion model application modules (228) for partitioned storage applications of different local coordinate conversion models, the application module retrieval module (229) is connected with a running reference station network (21) through a data communication network, the system is used for receiving information sent by a user, and a plurality of local coordinate transformation model application modules (228) are connected with an operation reference station network (21) through a data communication network and used for broadcasting spatial information required by the user.
3. The Beidou foundation enhancement system of high accuracy positioning according to claim 2, characterized in that: the acquisition server (23) comprises a data acquisition module (231) and a data acquisition module (232) required by model construction;
the data acquisition module (231) required by model construction is connected with the coordinate conversion module construction module (222), and the data acquisition module (231) required by model construction is connected with the data server (24) and is used for acquiring required data for coordinate conversion model construction in the data server (24);
the data acquisition module (232) is connected with the data server (24) and used for acquiring required data from the data server (24).
4. The Beidou foundation enhancement system of high accuracy positioning according to claim 3, characterized in that: the data server (24) comprises a three-dimensional coordinate system data storage module (242) of a reference station network and a place coordinate system data storage module (243);
the three-dimensional coordinate system data storage module (242) of the reference station network is respectively connected with the data acquisition module (231) and the data acquisition module (232) required by model construction, the data about the three-dimensional coordinate system of the reference station network acquired by the data acquisition module (232) is stored in the three-dimensional coordinate system data storage module (242) of the reference station network, the data about the local coordinate coefficient acquired by the data acquisition module (232) is stored in the local coordinate coefficient data storage module (243), and the data acquisition module (231) required by model construction can extract the three-dimensional coordinate system data and the local coordinate system data of the reference station network required by a coordinate conversion model from the three-dimensional coordinate system data storage module (242) of the reference station network and the local coordinate system data storage module (243).
5. The Beidou foundation enhancement system of high accuracy positioning according to claim 3, characterized in that: the control server (22) further comprises a first instruction input module (221) for inputting an instruction for constructing a quasi-geoid model, the first instruction input module (221) is connected with a quasi-geoid model construction module (2291) for constructing the quasi-geoid model, the quasi-geoid model construction module (2291) is connected with a quasi-geoid model generation module (2292) for generating the quasi-geoid model, the quasi-geoid model generation module (2292) is connected with a quasi-geoid model application module (2293) for applying the quasi-geoid model, and the quasi-geoid model application module (2293) is connected with a coordinate conversion module construction module (222) for providing an abnormal elevation value for constructing a local coordinate conversion model;
the quasi-geoid model building module (2291) is connected with the data acquisition module (231) required by model building and used for acquiring required data during model building of the quasi-geoid model building module (2291) from the data server (24);
the data server (24) further comprises a model data storage module (241), the model data storage module (241) is connected with a data acquisition module (231) and a data acquisition module (232) required by model building, the data about gravity and GNSS/level data acquired by the data acquisition module (232) are stored in the model data storage module (241), and the data acquisition module (231) required by model building can extract the gravity and GNSS/level data required by the quasi-geoid model from the model data storage module (241).
6. The Beidou foundation enhancement system of high accuracy positioning according to claim 3, characterized in that: the control server (22) further comprises a benchmark website network type optimization module (226), the benchmark website network type optimization module (226) is connected with the data acquisition module (232) and used for optimizing the current benchmark website network type in real time, the benchmark website network type optimization module (226) is connected with a benchmark website comparison module (223), the benchmark website comparison module (223) is connected with the data acquisition module (232) and used for comparing the newly added benchmark websites, the benchmark website comparison module (223) is connected with a newly added benchmark website list generation module (224) and used for generating a list of the newly added benchmark websites, and the newly added benchmark website list generation module (224) is connected with a newly added benchmark website list display module (225) and used for displaying the newly added benchmark website list.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115856942A (en) * | 2022-11-21 | 2023-03-28 | 国网思极位置服务有限公司 | Foundation enhancement network type optimization method based on virtual station and storage medium |
| CN115856942B (en) * | 2022-11-21 | 2024-01-30 | 国网思极位置服务有限公司 | Virtual station-based foundation enhancement network type optimization method and storage medium |
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