The Design Of Gravity And Magnetic Data Processing And Inversion Software System

The gravity and magnetic exploration is one of the geophysical exploration methods.It has a very important role in the explanation of deep crustal structure,regional geological structure,and resource exploration etc..With the rapid development of modern information technology in recent years,as well as the increasing geological interpretation requirements,gravity and magnetic exploration is trending from 2D qualitative or semi-quantitative interpretation to 3D visual quantitative interpretation.The development of gravity and magnetic data processing and inversion software is indispensable.The development of foreign gravity and magnetic software is earlier than our country,and it is mature in software function and performance.The current domestic research on 3D gravity and magnetic inversion and processing system still has certain gap compared with abroad,reflected in the aspects of multi-source data management,modeling and quantitative expression of 3D visualization and software development:(1)In the aspect of data management,there is a lack of unified and integrated management of multi-source,multi dimension and multi scale data,as well as efficient data access and data storage system;(2)In the aspect of 3D visual expression,the lack of perfect 3D modeling,3D scene control,model integration and model of information extraction ability,could lead to a failed result of dynamic real-time omnibearing stereoscopic observation and analysis of the results,thus affecting the geological structure of the judgment and interpretation;(3)In the aspect of quantitative expression(3D measuring and spatial analysis),the lack of comprehensive information on quantitative calculation and numerical analysis ability,could make it more difficult to position,on geological parameters,production scale,distribution and the relationship with the surrounding geological comprehensive analysis,as well as the conclusions with quantitative geological comprehensive;(4)In software development,the lack of efficient and robust system architecture,flexible and open modules could couse that system is difficult for upgrade and maintenance,cross platform and cross language development,weak portability for function.All of the four points above affect the development potential of the heavy magnetic software to a great extent.The current domestic research on 3D Gravity and magnetic inversion and processing system is not completely mature,reflected in the aspects of multi-source data management,quantitative expression(3D measuring and spatial analysis)and software development,and there is no perfect system that can realize the 3D visualization of gravity and magnetic quantitative comprehensive interdisciplinary interpretation.In this context,this paper bases on the theory and method of system development,researches and designs of the 3D visualization of gravity magnetic interpretation systems framework,focuses on the research of 3D visualization modeling,multi-source data management and realization method of system development and related technical measures,the development of the 3D visualization of gravity magnetic interpretation system combined with GIS technology in Micro Soft Visual Studio under the platform,and display and analysis of the function and effect of the system by using the actual data of Jiangxi province.The main results of this paper are as follows:(1)This paper has researched and analyzed the foreign and domestic mainstream gravity and magnetic data processing and inversion software,carried on the analysis from the aspects of software development,data management,function,and quantitative expression,summed up the current development situation of the gravity and magnetic processing and interpretation software,and that the future direction of development mainly from the component or development ofsoftware development technology,data management technology,3D visualization and spatial analysis of GIS technology to realize the optimization of the function and performance of gravity and magnetic data processing and inversion software.(2)This paper has analyzed the requirement of the system construction from user,function,data and performance,and the system architecture of the component and plug-in system based on the hierarchical system is researched and designed acording to the principles and ideas of the software engineering.In the longitudinal direction,the system is divided into the data layer,business layer and the presentation layer,the data layer uses Oracle database +ArcSDE to implement data integration management;the business layer adopts the construction of the component + plug-in and implements the system platform function with ArcGIS Engine and Skyline under the.net framework,and realizes the system extension function with plug-in technology and cross-language development technology;the display layer displays the front end with a 3D view window,which can display multiple integrated data and uses the functional interface window to assist with the platform and extension functions.The software has a hierarchical construction and the component + plug-in framework,which can realize the stable platform and flexible application expansion,and that the system has the stability,flexibility and scalability.(3)This paper has studied the 3D geological modeling method used for 3D visualization,with the data of geology,geophysics and geography,and established a standard of modeling supporting and working process.3D modeling and model integration has realized the terrain modeling,physical modeling and geological modeling with Skyline software;This paper has researched on database construction method,designed and constructed the database system using Oracle +ArcSDE for spatial data and non spatial data management,organization and ArcSDE callling,and built a system of spatial database,attribute database,3D model library and database,the system can achieve the unified management of multi scale multi-source multi dimension multi type data.(4)This paper has researched on the implementation strategy of system components based on the platform + plug-in framework.According to the design of software construction,the system has two parts for platform part and extended part.The platform part is developed using the development of components,by ArcGIS Engine and Skyline TerraExplorer Pro components and C# in the MicroVisual Studio environment,which realizes the function of basic operation,data query and 3D function.The extended part is developed using plug-in technology and crosslanguage cross-platform development technology,the main program,interface and plug-in manager and plug-ins have been designed,which realizes the function of gravity and magnetic data processing and inversion.(5)This paper has researched on the plug-in integration scheme of gravity and magnetic data processing and inversion system.And summarized the methods of plane potential field data processing and conversion,surface potential field data processing and transformation and inversion,and designed the function system of gravity and magnetic data processing and inversion,and implemented the integration of plug-ins and platforms.Through the research,the innovation of this paper lies in:(1)This paper designs the framework of gravity and magnetic data processing and inversion system based on component + plug-in technology.This system is to build a have magnetic data processing and inversion function,and can be combined with the result of magnetic calculation and many fields such as geology,geography,surveying and mapping of interdisciplinary information for comprehensive analysis of 3 d visualization and quantitative geological interpretation software,requires reasonable system architecture,extensible,easy integration,can according to different user needs to establish a plug-in software interface.Consequently,the system using the component GIS technology in the longitudinal direction of the system is divided into three layers system,establishing a logical hierarchy of data,function and user interface,in the transverse platform and is divided into two parts to expand,for the system function.The use of component GIS technology is to achieve the platform part of the application,the use of plug-in GIS technology to expand the application of the system.Based on the framework of MicroSoft.NET and GIS development components,the system framework and the development process of cross platform cross language development technology and database technology are designed.Based on the component and plug-in frame structure so that the system has a variety of standard components and standard interface plug-in module,unified data storage management mechanism,cross platform and cross system with mixed programming language ability,can achieve plug ins dynamic loading ",to build a solid platform main body and flexible application through this way,the system has the stability,flexibility,reusability and extensibility.The design and implementation of the system provides a detailed design ideas and solutions for the development of gravity and magnetic data processing and inversion software.(2)The development of gravity and magnetic data processing and inversion system is realized based on the framework design scheme.By combining the gravity and magnetic data processing and inversion methods with the plug-in technology,the paper realized the dynamic loading of the functions of the plane,surface data processing and conversion,and the Plug-in dynamic loading.Designed the data unified management mode,realized with mass-data database system including spatial database,attribute database,3D model library and metadatabase.The 3D simulation and 3D visualization of the terrain,physical object and geological body are realized with 3DGIS technology.The function development of the system realized the quantitative expression and comprehensive analysis of the data information query,geometric form and physical property of gravity and magnetism,geology,geography,surveying and mapping data.The integration of the gravity and magnetic data processing and inversion results and multi-source,multi-dimensional and multi-type information,through 3D visualization of data information integration,realizing the unified management of multi scale multi-source multi dimension multi type data,using the GIS query,calculation and analysis functions based on the analysis and interpretation of the comprehensive information multi domain integration,space measurement and analysis to predict implementation of geophysical data,location of gravity and magnetic data processing and inversion from the traditional 3D display for geophysical multivariate data analysis and 3D integrated comprehensive interpretation,this is an important change.