Study on digital water conservancy based on 3S technology
Liang, Yong ... [et al.]
Water conservancy is one of the basic infrastructures of national economy, but now traditional water conservancy is faced with many issues such as slow acquisition, transmission and refresh of data, invisibility of data, weak power to make spatial analysis, lack of share of the information and so on. Digital Water Conservancy is one solution to above problems. Definition of Digital Water Conservancyy is proposed on basis of Digital Earth in this paper, and necessity, feasibility, construction principles of Digital Water Conservancyy are analyzed, and the framework of it is presented that is composed of fundamental technology, basic infrastructure, and specific applications. Fundamental technologies consist of 3S (GIS, GPS, RS) technology, database technology, communication and computer network technology, and interactive operation technology and so on. Basic infrastructures consist of national information infrastructure, national spatial information infrastructure, special data of water conservancy, and security measures. Specific applications are made up of management information systems, decision-making systems and expert systems and so on. The above three levels provide hardware and software to water conservancy around data acquisition and refresh, process and access, information extraction and analysis, transmission of information, construction and refresh of databases, web and information share, decision-making support and so on. And spatial information infrastructure, special data of water conservancy, decisionmaking models are the cores of digital water conservancy, but the construction of spatial information infrastructure depends on 3S technology. GIS can manage the geographical information data and attributes data and make spatial analysis, RS can be used to extract the water surface, water depth, direction of waterr movement, soil and sand quantity contained in the water and so on from remote sensed images and data, GPS can be used to fast acquire the coordinates of features and monitor landslip, deformation of dams and so on. Digital Water Conservancyy is large and complex systematic engineering, but it can be regarded as be composed of points (reservoir), lines (watershed), and areas (popularization of points and lines). Digital reservoir is carried out in Xue Ye Reservoir, Shandong Province, China, which will provide experience for informatization of water conservancy.
Event: 5th FIG Regional Conference for Africa : Promoting Land Administration and Good Governance
Only personal, non-commercial use of this document is allowed.