การออกแบบและพัฒนาระบบสารสนเทศปริภูมิผ่านเว็บเซอร์วิส / ชัยภัทร เนื่องคำมา = Design and implementation of opengeospatial web services / Chaipat Nengcomma
To design and implement an Open Geospatial Web Services System. The case study is public land information services. Firstly we studied Open Geospatial Consortium specifications namely Web Map Service (WMS), Web Feature Service (WFS), Web Coverage Service (WCS), Style Layer Descriptor (SLD), Filter Encoding (FE) and Web Map Context (WMC). After that we studied the sematics of map service and analyzed two widely-used service integration model between cascading server and simple overlay model. Finally we have implemented an Open Geospatial Web Services System applied for public land information service. Minnesota Map Server is used to act as map server engine. We have developed client software base on AJAX technology enhancing OGC web services. The application, named here OWS Client, can display map, query data and request spatial data from multiple systems based on OGC protocols. As a result, the cascading server medel is more appropriate to use in complex service environment. The selected semantic could reduce traffic amongst servers and improve service integrity for public land information service. The prototype of Open Geospatial Web Service has solved interoperability problem and improved efficiency of public land information system such as reducing reproduction costs and time to copy data and sharing the geospatial data amongst govermmental organizations effectively. Adopting OGC Web Services, agencies will definitely improve information assets management and promote utilizing geospatial data.