Regional Geoid Digital Modeling And Data Distribution

As the development of surveying and mapping science technology,Human have expressed the terrain from two-dimensional space to three-dimensional space,DEM production technology which has generated on this basic is one of the descriptions to express the three-dimensional space information,And the problem of studying regional geoid purification is an important scientific mission of geodesy.Combine the DEM modeling technology and the regional geoid purification studying,Establishing high accuracy regional height anomaly digital model,In order to interpolate the height anomaly value of any point or plot in this region,And issue the spatial information to the public dynamically through the network,It can be convenient for any kind of surveying and mapping users to acquire the geographic spatial information which they need,Further to enhance the service level of surveying and mapping to science research and social production.This is one of evidences whyⅠselect this topic for my thesis.Two parts are included in my thesis:one is about establishment of regional geoid digital model;the other is about the distribution of this digital model and height anomaly data.In respect of establishing regional geoid digital model,The main mentality was conducted analysis and studying to already mature Related modeling algorithm.According the simulated region as the research background,Find out the modeling algorithm which is adequate for the terrain fluctuation of simulated region,Here we use the bilinear interpolation algorithm,Meanwhile using software of Golden Software Surfer8 and VC#.NET programming language as the aided designing tools,Generating regional geoid digital model and interpolating height anomaly values,The result meets the paper design requirements.In the course of distributing the geoid digital model and height anomaly data,In present paper design,Using the current popular software of Microsoft IIS combine with.NET platform of ASP.NET to establish website,And edited in the code documents which in the background of website through the core language VC#.NET of.NET platform, Implement the read-write of data in Access database of background,preservation of downstage users' registration information,and interoperability function between homepages and users.When users come into the website,Users should first register the users' attribute information,Waiting for that the website confirms and passes,After it is confirmed to the legitimate users,Then you can acquire the data which you need by E-banking payment in the net.When established the regional geoid digital model,You can interpolate the height anomaly value ofζof arbitrary point in the model region conveniently,It can solve the problem that GPS localization technology can not acquire the normal height directly and calculate the elevation,It has great referential value to science research and productive application,and it also has certain value to solve the regional cm-order quasi-geoid refine, especially to the plateau mountain areas.At the same time,issuing the data to the public through the network,So various types of users can share it.It will speed up the step of transform the surveying and mapping's achievement to social productive forces.Further enhancement surveying and mapping achievement for social service function.Improving protection service levels of surveying and mapping for promoting scientific development and social harmony.