期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2007
卷号：XXXVI–4/W45
出版社：Copernicus Publications
摘要：One of the most expensive stages in implementation of a GIS system is preparation of spatial data to be entered to the system. It can be said that about 60-80 percent of the project cost is spent for spatial data preparation. Since the quality and reliability of obtained results in GIS analysis is directly affected by input data, entered data quality can be known as the most important factor to achieve a successful GIS project. Temporal changes of features as one of the most important factor in reducing accuracy and reliability of spatial data should be considered carefully to avoid waste of financial resources. To have an everlasting GIS system, spatial data in GIS must be regularly updated. Since updating stages for large amount of spatial data are cost and time consuming, therefore automatic and intelligent approaches to perform these stages can help to save time and cost of the project. An automatic method for spatial data updating will be more efficient when updating process is performed simultaneously with data collecting stage (on-line updating approach). Due to the fact that high-speed spatial data collection can be performed by GPS, on-line integration of GPS and GIS can be a practical and appropriate method for on-line and automatic updating of spatial data. In this paper, after reviewing problems and technical requirements for on-line integration of GIS and GPS, the stages of design, implementation and test of GGISIU as an on-line integrated GPS and GIS system for automatic updating of spatial data, are described
