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Exploring The Dissemination Strategy Of Control Point Data In Taiwan From A Standardization Perspective

In recent years, with the rapid development of surveying technology, geographic information systems, the internet, and mobile devices, the types, quantity, and applications of data with geospatial property have grown remarkably. National Geographic Information System (NGIS) is a nation-based mechanism developed in Taiwan to facilitate the integration, application, and sharing of cross-disciplinary geospatial information. Different business units are required to play an active role in the production and maintenance of domain data, and to develop data sharing, collaborative procedures, and multi-purpose applications through standardization technology. Designing a consistent geospatial reference is a key factor in the overall development of the country and the promotion of spatial data infrastructure. The surveying of various types of geographic data must be based on the nation-level coordinate system to be effectively integrated. Control points, especially, serve as the common positioning reference for all surveying procedures, and must be established and maintained by authorized surveying agencies and made available to all stakeholders. To facilitate the interoperable distribution of control point data, this study introduces open geographic information standards and technologies from ISO/TC211 and OGC. By analyzing the characteristics of control points and taking the maintenance and storage status into consideration, a standardized description framework for control point data is designed to comply with international standards. This allows responsible agencies to distribute various types of control point data in accordance with the requirements of the NGIS standardization framework, achieving both the goal of national consistency in locational reference and open data sharing. The study further explores the interpretation and processing strategies of control points and surveying results at the user application environment, so as to highlight the interoperability of standardized approach and demonstrate the advantages of the flexible data recording framework proposed by this study.