Surveying and mapping geographic information virtual simulation system based on high precision

Abstract

The invention discloses a surveying and mapping geographic information virtual simulation system based on high precision, which belongs to the technical field of virtual simulation and comprises a data acquisition module, a data preprocessing fusion module, a three-dimensional modeling module, a virtual simulation module, a real-time data dynamic updating module, an interactive visualization control module and a data analysis decision module. By generating the high-precision terrain surface model, through the digital elevation model and the high-resolution image data, the reality sense and details of the terrain model are ensured, the multi-level detail model is generated, the models of different detail levels are automatically switched according to the sight distance, the rendering efficiency and performance are improved, dynamic simulation is performed according to set parameters and scenes, and the real-time performance of the terrain model is improved. The change of the model and the operation state of the system are monitored in real time, a vivid virtual environment is provided, flexible environment setting is supported, and the sense of reality of the virtual environment is enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of virtual simulation, and specifically refers to a virtual simulation system based on high-precision surveying and mapping geographic information. Background Art

[0002] With the development of information technology, virtual reality technology has been widely used in many fields, especially in education, training, urban planning, etc. However, the existing virtual reality system is insufficient in the accuracy of geographic information and cannot meet the needs of professional users for high-precision geographic information;

[0003] However, the existing surveying and mapping geographic information virtual simulation system still has certain defects. The existing surveying and mapping geographic information virtual simulation system relies on static geographic information data and cannot obtain the latest data regularly, resulting in data lag in the virtual environment and failure to reflect the latest geographical changes. Data updates usually require manual operation, which is time-consuming and labor-intensive, prone to errors, and cannot achieve automated data update processes. It relies on a single data source and lacks a multi-level detail model. It cannot automatically switch models of different detail levels according to the line of sight, which affects rendering efficiency and performance and cannot fully utilize the advantages of multi-source data. The integrity and accuracy of the data are limited, and it only supports static simulation. It cannot perform dynamic adjustment and optimization, and the flexibility and practicality of the simulation results are limited. Therefore, an automatic calculation method for constant value accounting of power supply and distribution system based on deep learning is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a virtual simulation system based on high-precision surveying and mapping geographic information to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision surveying and mapping geographic information virtual simulation system, comprising a data acquisition module, a data preprocessing and fusion module, a three-dimensional modeling module, a virtual simulation module, a real-time data dynamic update module, an interactive visualization control module and a data analysis and decision module;

[0006] The data acquisition module is used to obtain geographic information data through satellite remote sensing data, laser radar data, and ground measurement data;

[0007] The data preprocessing and fusion module is used to preprocess the acquired geographic data and perform data fusion;

[0008] The three-dimensional modeling module is used to perform three-dimensional modeling based on the fused data to construct a real three-dimensional geographic model;

[0009] The virtual simulation module is used to perform simulation according to the constructed three-dimensional geographic model;

[0010] The real-time data dynamic update module is used to regularly obtain the latest geographic information, automatically detect data changes, and timely update the corresponding parts in the virtual environment;

[0011] The interactive visualization control module is used to provide an interactive interface, through which browsing, querying, controlling and virtual simulation systems are performed;

[0012] The data analysis and decision-making module is used to conduct in-depth analysis and decision-making on the virtual simulation results.

[0013] Wherein, the data acquisition module is used to obtain geographic information data through satellite remote sensing data, laser radar data, and ground measurement data;

[0014] Satellite remote sensing data: remote sensing data transmitted by satellite is received through ground receiving stations;

[0015] LiDAR data: Develop a detailed collection plan based on the area to be covered, collect data based on the planned route and parameters, and the LiDAR device emits a laser beam and receives reflected signals to calculate the three-dimensional coordinates of ground points;

[0016] Ground measurement data: Develop a detailed measurement plan based on the area to be measured, including the distribution of measurement points and the measurement sequence. Perform field measurement operations according to the measurement plan, record the coordinates, elevation and other information of each measurement point, and organize the measured data;

[0017] All collected data are stored in a unified database.

[0018] The data preprocessing and fusion module is used to preprocess the acquired geographic data and perform data fusion; the data collected by the data acquisition module is acquired, and data cleaning is performed on the collected data, including noise detection, noise removal, missing value processing and data verification; and data correction is performed on the cleaned data, including geometric correction, radiation correction and time correction;

[0019] Geometric correction: convert the data from the original projection system to the target projection system, perform geometric registration on the data through control point matching, and eliminate geometric distortion;

[0020] Radiation correction: The atmospheric scattering and absorption effects are corrected through the atmospheric correction model, and the radiation value is converted into surface reflectivity to eliminate the effects of the sensor and the atmosphere;

[0021] Time correction: Eliminate the impact of seasonal and cyclical changes by analyzing time series data.

[0022] Among them, the preprocessed data is fused to generate a comprehensive geographic information data set, and the pixel values ​​of different data sources are fused by weighted average. The implementation formula is:

[0023]

[0024] In the formula, F(x,y) represents the pixel value after fusion, D i (x, y) represents the pixel value of the ith data source at position (x, y), w i represents the weight of the i-th data source;

[0025] The evaluation is performed based on the fused data, and the implementation formula is:

[0026]

[0027] In the formula, F i Represents the fused data value, T i represents the reference data value, and N represents the number of data points.

[0028] Among them, the 3D modeling module is used to build a real 3D geographic model based on the fused data; import the preprocessed and fused geographic information data into the 3D modeling software, check the integrity and consistency of the data, classify and organize the data by type, generate a terrain surface model from the point cloud data through a digital elevation model, extract terrain features, and map high-resolution satellite images onto the terrain surface to increase the realism of the terrain model.

[0029] Among them, the 3D modeling module reconstructs the building model of the city based on vector data and image data, parses the vector data of the building, extracts the location, height, shape and other information of the building, generates a 3D model based on the extracted building information through a 3D modeling tool, applies the texture map of the building to the model, optimizes the generated building model, integrates elements such as terrain, buildings, vegetation, water bodies into a complete 3D geographic model, generates a multi-level detail model, automatically switches models of different detail levels according to the viewing distance, selects the export format, sets the export parameters, performs the export operation, exports the 3D model to the required format and verifies the exported file.

[0030] Among them, the virtual simulation module is used to perform simulation according to the constructed three-dimensional geographic model; the constructed three-dimensional geographic model is imported into the virtual simulation system, and the parameters of the simulation environment, such as lighting, shadow, weather, time, etc., are set according to the simulation requirements, and the specific simulation scene is defined according to the simulation target; the simulation is performed according to the set requirements and model parameters, the virtual simulation system is started, the simulation environment is loaded and initialized, and the simulation is started. The system will dynamically simulate the three-dimensional geographic model according to the set parameters and scenes, and monitor the changes in the model and the operating status of the system in real time during the simulation process.

[0031] Among them, the real-time data dynamic update module is used to regularly obtain the latest geographic information, automatically detect data changes, and timely update the corresponding parts in the virtual environment; regularly obtain the latest geographic data of the data source, automatically detect data changes, identify the parts that need to be updated, and use the data comparison algorithm to detect data changes, record the changed data items, including the time, location, and content of the changes, synchronize the changed data to the data model of the virtual environment, update the three-dimensional model in the virtual environment according to the changed data, update the properties of objects in the virtual environment and the status of objects in the virtual environment, record the log of data changes, notify users through emails, text messages, message push, etc., and display notifications of data changes on the user interface of the virtual environment.

[0032] Among them, the interactive visualization control module is used to provide an interactive interface, through which browsing, querying, controlling and virtual simulation systems are carried out; the interactive interface is designed according to needs, and the data in the virtual simulation system is bound to the controls of the interactive interface to achieve two-way binding of data, that is, the operations of the user interface can be reflected in the virtual simulation system in real time, and at the same time, the changes in the virtual simulation system can also be updated to the user interface in real time. According to user needs and operating procedures, various interactive logics are implemented, and functional testing of the interactive visualization control module is carried out. According to user feedback and test results, the interactive visualization control module is iteratively optimized.

[0033] Among them, the data analysis and decision-making module is used to conduct in-depth analysis and decision-making on the virtual simulation results; export the simulation result data in the virtual simulation system, including geographic information, time series data, and dynamically changing data, remove noise and outliers in the data, fill in missing values ​​and convert the format, calculate the mean, median, standard deviation and other descriptive statistics of the data and the correlation coefficient between variables, analyze the data through regression analysis, verify and evaluate the analysis results, compare the analysis results with the actual data, formulate a decision plan based on the analysis results, apply the optimization plan to the virtual simulation system, conduct simulation tests, evaluate the optimization effect, and make further adjustments and optimizations based on the test results.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The present invention can regularly obtain the latest geographic information through the real-time data dynamic update module, automatically detect data changes, and timely update the corresponding parts in the virtual environment, thereby ensuring the timeliness and accuracy of the virtual simulation environment. The virtual simulation module can perform simulation according to the constructed three-dimensional geographic model, and monitor the changes of the model and the operating status of the system in real time, supporting dynamic adjustment and optimization;

[0036] 2. The present invention generates a high-precision terrain surface model, through a digital elevation model and high-resolution image data, to ensure the realism and details of the terrain model, generates a multi-level detail model, and automatically switches models of different detail levels according to the viewing distance, thereby improving rendering efficiency and performance;

[0037] 3. The present invention provides a realistic virtual environment by performing dynamic simulation according to set parameters and scenarios, monitoring the changes of the model and the operating status of the system in real time, and supporting flexible environment settings such as lighting, shadows, weather, time, etc., thereby enhancing the realism of the virtual environment;

[0038] 4. The present invention improves the user's interactive experience by providing multiple interactive modes and realizes two-way binding of data. The operations of the user interface can be reflected in the virtual simulation system in real time, and the changes of the virtual simulation system can also be updated in real time to the user interface. It can conduct in-depth analysis of the virtual simulation results, provide descriptive statistics, correlation analysis, regression analysis and other analysis methods, provide scientific decision support based on the analysis results, help users formulate optimization plans, evaluate optimization effects, and make further adjustments and optimizations. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a virtual simulation system based on high-precision surveying and mapping geographic information of the present invention;

[0040] Figure 2 The operating process of the virtual simulation system based on high-precision surveying and mapping geographic information of the present invention is as follows Figure 1 ;

[0041] Figure 3 The operating process of the virtual simulation system based on high-precision surveying and mapping geographic information of the present invention is as follows Figure 2 . DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example

[0044] See also Figure 1-Figure 3 As shown, the present invention provides a technical solution: including a data acquisition module, a data preprocessing and fusion module, a three-dimensional modeling module, a virtual simulation module, a real-time data dynamic update module, an interactive visualization control module and a data analysis and decision module;

[0045] The data acquisition module is used to obtain geographic information data through satellite remote sensing data, laser radar data, and ground measurement data;

[0046] The data preprocessing and fusion module is used to preprocess the acquired geographic data and perform data fusion;

[0047] The three-dimensional modeling module is used to perform three-dimensional modeling based on the fused data to construct a real three-dimensional geographic model;

[0048] The virtual simulation module is used to perform simulation according to the constructed three-dimensional geographic model;

[0049] The real-time data dynamic update module is used to regularly obtain the latest geographic information, automatically detect data changes, and timely update the corresponding parts in the virtual environment;

[0050] The interactive visualization control module is used to provide an interactive interface, through which browsing, querying, controlling and virtual simulation systems are performed;

[0051] The data analysis and decision-making module is used to conduct in-depth analysis and decision-making on the virtual simulation results.

[0052] Wherein, the data acquisition module is used to obtain geographic information data through satellite remote sensing data, laser radar data, and ground measurement data;

[0053] Satellite remote sensing data: remote sensing data transmitted by satellite is received through ground receiving stations;

[0054] LiDAR data: Develop a detailed collection plan based on the area to be covered, collect data based on the planned route and parameters, and the LiDAR device emits a laser beam and receives reflected signals to calculate the three-dimensional coordinates of ground points;

[0055] Ground measurement data: Develop a detailed measurement plan based on the area to be measured, including the distribution of measurement points and the measurement sequence. Perform field measurement operations according to the measurement plan, record the coordinates, elevation and other information of each measurement point, and organize the measured data;

[0056] All collected data are stored in a unified database.

[0057] The data preprocessing and fusion module is used to preprocess the acquired geographic data and perform data fusion; the data collected by the data acquisition module is acquired, and data cleaning is performed on the collected data, including noise detection, noise removal, missing value processing and data verification; and data correction is performed on the cleaned data, including geometric correction, radiation correction and time correction;

[0058] Geometric correction: convert the data from the original projection system to the target projection system, perform geometric registration on the data through control point matching, and eliminate geometric distortion;

[0059] Radiation correction: The atmospheric scattering and absorption effects are corrected through the atmospheric correction model, and the radiation value is converted into surface reflectivity to eliminate the effects of the sensor and the atmosphere;

[0060] Time correction: Eliminate the impact of seasonal and cyclical changes by analyzing time series data.

[0061] Among them, the preprocessed data is fused to generate a comprehensive geographic information data set, and the pixel values ​​of different data sources are fused by weighted average. The implementation formula is:

[0062]

[0063] In the formula, F(x,y) represents the pixel value after fusion, D i (x, y) represents the pixel value of the ith data source at position (x, y), w i represents the weight of the i-th data source;

[0064] The evaluation is performed based on the fused data, and the implementation formula is:

[0065]

[0066] In the formula, F i Represents the fused data value, T i represents the reference data value, and N represents the number of data points.

[0067] Among them, the 3D modeling module is used to build a real 3D geographic model based on the fused data; import the preprocessed and fused geographic information data into the 3D modeling software, check the integrity and consistency of the data, classify and organize the data by type, generate a terrain surface model from the point cloud data through a digital elevation model, extract terrain features, and map high-resolution satellite images onto the terrain surface to increase the realism of the terrain model.

[0068] Among them, the 3D modeling module reconstructs the building model of the city based on vector data and image data, parses the vector data of the building, extracts the location, height, shape and other information of the building, generates a 3D model based on the extracted building information through a 3D modeling tool, applies the texture map of the building to the model, optimizes the generated building model, integrates elements such as terrain, buildings, vegetation, water bodies into a complete 3D geographic model, generates a multi-level detail model, automatically switches models of different detail levels according to the viewing distance, selects the export format, sets the export parameters, performs the export operation, exports the 3D model to the required format and verifies the exported file.

[0069] Among them, the virtual simulation module is used to perform simulation according to the constructed three-dimensional geographic model; the constructed three-dimensional geographic model is imported into the virtual simulation system, and the parameters of the simulation environment, such as lighting, shadow, weather, time, etc., are set according to the simulation requirements, and the specific simulation scene is defined according to the simulation target; the simulation is performed according to the set requirements and model parameters, the virtual simulation system is started, the simulation environment is loaded and initialized, and the simulation is started. The system will dynamically simulate the three-dimensional geographic model according to the set parameters and scenes, and monitor the changes in the model and the operating status of the system in real time during the simulation process.

[0070] Among them, the real-time data dynamic update module is used to regularly obtain the latest geographic information, automatically detect data changes, and timely update the corresponding parts in the virtual environment; regularly obtain the latest geographic data of the data source, automatically detect data changes, identify the parts that need to be updated, and use the data comparison algorithm to detect data changes, record the changed data items, including the time, location, and content of the changes, synchronize the changed data to the data model of the virtual environment, update the three-dimensional model in the virtual environment according to the changed data, update the properties of objects in the virtual environment and the status of objects in the virtual environment, record the log of data changes, notify users through emails, text messages, message push, etc., and display notifications of data changes on the user interface of the virtual environment.

[0071] Among them, the interactive visualization control module is used to provide an interactive interface, through which browsing, querying, controlling and virtual simulation systems are carried out; the interactive interface is designed according to needs, and the data in the virtual simulation system is bound to the controls of the interactive interface to achieve two-way binding of data, that is, the operations of the user interface can be reflected in the virtual simulation system in real time, and at the same time, the changes in the virtual simulation system can also be updated to the user interface in real time. According to user needs and operating procedures, various interactive logics are implemented, and functional testing of the interactive visualization control module is carried out. According to user feedback and test results, the interactive visualization control module is iteratively optimized.

[0072] Among them, the data analysis and decision-making module is used to conduct in-depth analysis and decision-making on the virtual simulation results; export the simulation result data in the virtual simulation system, including geographic information, time series data, and dynamically changing data, remove noise and outliers in the data, fill in missing values ​​and convert the format, calculate the mean, median, standard deviation and other descriptive statistics of the data and the correlation coefficient between variables, analyze the data through regression analysis, verify and evaluate the analysis results, compare the analysis results with the actual data, formulate a decision plan based on the analysis results, apply the optimization plan to the virtual simulation system, conduct simulation tests, evaluate the optimization effect, and make further adjustments and optimizations based on the test results.

[0073] Working principle: Geographic information data is obtained through satellite remote sensing data, lidar data, ground measurement data and other methods. The collected geographic data is preprocessed and fused. Data cleaning includes noise detection, noise removal, missing value processing and data verification. Data correction includes geometric correction, radiation correction and time correction. Geometric correction converts data from the original projection system to the target projection system to eliminate geometric distortion; radiation correction converts radiation values ​​into surface reflectivity to eliminate the influence of sensors and atmosphere; time correction eliminates the influence of seasonal and periodic changes. Data fusion fuses the preprocessed data to generate a comprehensive geographic information data set. The pixel values ​​of different data sources are fused through weighted average and other methods. And evaluate the quality of the fused data, import the preprocessed and fused geographic information data into the 3D modeling software, check the integrity and consistency of the data, generate a terrain surface model from the point cloud data, extract terrain features, and reconstruct the city's building model based on vector data and image data, including parsing the vector data of the building, extracting the location, height, shape and other information of the building, generating a 3D model, and applying texture mapping for optimization, integrating terrain, buildings, vegetation, water bodies and other elements into a complete 3D geographic model, generating a multi-level detail model, automatically switching models of different detail levels according to the viewing distance, selecting the export format, setting the export parameters, executing the export operation, and verifying the exported file, and then constructing the 3D geographic Import the model into the virtual simulation system, set the parameters of the simulation environment, define specific simulation scenarios according to the simulation objectives, start the virtual simulation system, load and initialize the simulation environment, and start running the simulation. The system will dynamically simulate the three-dimensional geographic model according to the set parameters and scenarios. During the simulation process, monitor the changes in the model and the operating status of the system in real time, make adjustments and optimizations as needed, regularly obtain the latest geographic data from the data source, automatically detect data changes, identify the parts that need to be updated, use data comparison algorithms to detect data changes, record the changed data items, including the time, location, content, etc. of the changes, synchronize the changed data to the data model of the virtual environment, and update the virtual environment according to the changed data. The 3D model in the virtual environment is updated, the properties and status of objects in the virtual environment are updated, the log of data changes is recorded, and users are notified by email, SMS, message push, etc. The notification of data changes is displayed on the user interface of the virtual environment. The interactive interface is designed according to the needs, and the data in the virtual simulation system is bound to the controls of the interactive interface to achieve two-way binding of data, that is, the operation of the user interface can be reflected in the virtual simulation system in real time, and the changes of the virtual simulation system can also be updated to the user interface in real time. According to user needs and operation processes, various interactive logics are implemented, the interactive visualization control module is functionally tested, and iterative optimization is performed based on user feedback and test results, and in-depth analysis and decision-making are made on the virtual simulation results.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0075] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. Based on high-precision surveying and mapping geographic information virtual simulation system, it is characterized by: It includes data acquisition module, data preprocessing and fusion module, 3D modeling module, virtual simulation module, real-time data dynamic update module, interactive visualization control module and data analysis and decision-making module; The data acquisition module is used to obtain geographic information data through satellite remote sensing data, laser radar data, and ground measurement data; The data preprocessing and fusion module is used to preprocess the acquired geographic data and perform data fusion; The three-dimensional modeling module is used to perform three-dimensional modeling based on the fused data to construct a real three-dimensional geographic model; The virtual simulation module is used to perform simulation according to the constructed three-dimensional geographic model; The real-time data dynamic update module is used to regularly obtain the latest geographic information, automatically detect data changes, and timely update the corresponding parts in the virtual environment; The interactive visualization control module is used to provide an interactive interface, through which browsing, querying, controlling and virtual simulation systems are performed; The data analysis and decision-making module is used to conduct in-depth analysis and decision-making on the virtual simulation results.

2. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The data acquisition module is used to obtain geographic information data through satellite remote sensing data, laser radar data, and ground measurement data; Satellite remote sensing data: remote sensing data transmitted by satellite is received through ground receiving stations; LiDAR data: Develop a detailed collection plan based on the area to be covered, collect data based on the planned route and parameters, and the LiDAR device emits a laser beam and receives reflected signals to calculate the three-dimensional coordinates of ground points; Ground measurement data: Develop a detailed measurement plan based on the area to be measured, including the distribution of measurement points and the measurement sequence. Perform field measurement operations according to the measurement plan, record the coordinates, elevation and other information of each measurement point, and organize the measured data; All collected data are stored in a unified database.

3. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The data preprocessing and fusion module is used to preprocess the acquired geographic data and perform data fusion; the collected data is acquired according to the data acquisition module, and the collected data is cleaned, including noise detection, noise removal, missing value processing and data verification, and the cleaned data is corrected, including geometric correction, radiation correction and time correction; Geometric correction: convert the data from the original projection system to the target projection system, perform geometric registration on the data through control point matching, and eliminate geometric distortion; Radiation correction: The atmospheric scattering and absorption effects are corrected through the atmospheric correction model, and the radiation value is converted into surface reflectivity to eliminate the effects of the sensor and the atmosphere; Time correction: Eliminate the impact of seasonal and cyclical changes by analyzing time series data.

4. The high-precision surveying and mapping geographic information virtual simulation system according to claim 3 is characterized in that: The preprocessed data is fused to generate a comprehensive geographic information data set. The pixel values ​​of different data sources are fused by weighted average. The implementation formula is: In the formula, F(x,y) represents the pixel value after fusion, D i (x, y) represents the pixel value of the ith data source at position (x, y), w i represents the weight of the i-th data source; The evaluation is performed based on the fused data, and the implementation formula is: In the formula, F i Represents the fused data value, T i represents the reference data value, and N represents the number of data points.

5. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The 3D modeling module is used to build a real 3D geographic model based on the fused data; import the pre-processed and fused geographic information data into the 3D modeling software, check the integrity and consistency of the data, classify and organize the data by type, generate a terrain surface model from the point cloud data through a digital elevation model, extract terrain features, and map high-resolution satellite images onto the terrain surface.

6. The high-precision surveying and mapping geographic information virtual simulation system according to claim 5 is characterized in that: The 3D modeling module reconstructs the building model of the city based on the vector data and the image data, analyzes the vector data of the building, extracts the location, height, shape and other information of the building, generates a 3D model based on the extracted building information through the 3D modeling tool, applies the texture map of the building to the model, optimizes the generated building model, integrates the terrain, buildings, vegetation, water bodies and other elements into a complete 3D geographic model, generates a multi-level detail model, automatically switches models of different detail levels according to the viewing distance, selects the export format, sets the export parameters, performs the export operation, exports the 3D model to the required format and verifies the exported file.

7. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The virtual simulation module is used to perform simulation based on the constructed three-dimensional geographic model; import the constructed three-dimensional geographic model into the virtual simulation system, set the parameters of the simulation environment according to the simulation requirements, such as lighting, shadow, weather, time, etc., and define the specific simulation scene according to the simulation target; perform simulation according to the set requirements and model parameters, start the virtual simulation system, load and initialize the simulation environment, and start running the simulation. The system will dynamically simulate the three-dimensional geographic model according to the set parameters and scenes, and monitor the changes in the model and the operating status of the system in real time during the simulation process.

8. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The real-time data dynamic update module is used to regularly obtain the latest geographic information, automatically detect data changes, and timely update the corresponding parts in the virtual environment; regularly obtain the latest geographic data from the data source, automatically detect data changes, identify the parts that need to be updated, use a data comparison algorithm to detect data changes, record the changed data items, including the time, location, and content of the changes, synchronize the changed data to the data model of the virtual environment, update the three-dimensional model in the virtual environment according to the changed data, update the properties of objects in the virtual environment and the status of objects in the virtual environment, record the log of data changes, notify users through emails, text messages, message push, etc., and display notifications of data changes on the user interface of the virtual environment.

9. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The interactive visualization control module is used to provide an interactive interface for browsing, querying, controlling and virtual simulation systems; the interactive interface is designed according to requirements, and the data in the virtual simulation system is bound to the controls of the interactive interface to achieve two-way binding of data, that is, the operations of the user interface can be reflected in the virtual simulation system in real time, and the changes in the virtual simulation system can also be updated to the user interface in real time. According to user needs and operating procedures, various interactive logics are implemented, and functional tests are performed on the interactive visualization control module. According to user feedback and test results, the interactive visualization control module is iteratively optimized.

10. The high-precision surveying and mapping geographic information virtual simulation system according to claim 1 is characterized in that: The data analysis and decision-making module is used to conduct in-depth analysis and decision-making on the virtual simulation results; export the simulation result data in the virtual simulation system, including geographic information, time series data, and dynamically changing data, remove noise and outliers in the data, fill in missing values ​​and convert the format, calculate the mean, median, standard deviation and other descriptive statistics of the data and the correlation coefficient between variables, analyze the data through regression analysis, verify and evaluate the analysis results, compare the analysis results with the actual data, formulate a decision plan based on the analysis results, apply the optimization plan to the virtual simulation system, conduct simulation tests, evaluate the optimization effect, and make further adjustments and optimizations based on the test results.

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