Design And Implementation Of 3D Geographic Information Web Service Interfaces

With the rapid development of Web technology and computer technology,the combination of geographic information technology and Web service technology has prompted the development of geographic information systems for geographical information Web service.The 3D geographic information Web service can not only reflect the strong demand for further expansion of geographic information Web service,but also provide new solutions for the sharing,interoperability and integration of 3D spatial information.Its research has important practical significance.Therefore,this paper takes 3D geographic information Web service as the main research object.Under the background of analyzing the research background of 3D geographic information service,it mainly focuses on the service framework and service interface of 3D geographic information Web service.First of all,from the inevitable trend of the development of geographic information services,this paper points out the significance of the study of 3D geographic information Web services,and analyzes the research status of geographic information Web services,3D geographic information Web services,and 3D service Interface standard specifications,and proposes the existence of 3D services.Problems such as incomplete standards,single interface types,inability to combine,and summarizing the main content of this article need to be studied.Secondly,the three-dimensional geographic information network services are studied from the three aspects of geographic information service concept,three-dimensional service classification,and three-dimensional service architecture.Conceptually,the concept of 3D geographic information service is summarized.According to the requirements of different users for 3D services in various fields,3D services are classified and classified,and 3D services are divided into data services,query services,measurement services,spatial analysis services,and other extensions.Services and other services to determine service content.Based on the research of WebGIS architecture,this paper designs a three-dimensional service architecture based on the service content using a medium client architecture.The 3D service architecture is divided into three layers:"data layer-service layer-application layer",providing the corresponding architecture support for the interface design of this article.Then,based on the above research,this paper proposes a sharing-oriented 3D service interface scheme.This paper relies on a three-tier service architecture system to design service interfaces and parameters at the service layer in detail.Metadata service interface(getCapabilities),four kinds of data service interfaces(getModel?getImage?getDEM?getTinLayer),two kinds of query service interfaces(getFeaturelnfoByPosition?getFeaturelnfoByAttr),one kinds of measurement service interface(getMeasurement),and four kinds of space analysis service interfaces(inSightAnalysis?viewshedAnalysis?slopeAnalysis?netWorkAnalysis)are proposed.The service interfaces consists of a total of 12 service interface solutions,and corresponding parameters are designed according to the functions of different services.Finally,the service architecture and service interface solutions proposed in this paper are finally integrated into the NewMap Server geographic information service management platform.Based on NewMap Server,a Beijing's road 3D geographic information sharing platform is designed and developed,and the 3D service interface is applied to specific projects to verify the feasibility of the research results of this paper.