Design Smart City Based on 3S, Internet of Things, Grid Computing and Cloud Computing Technology

With High-technology and society being developed rapidly, there is a trend which is from digital earth to smart earth. Moreover, smart city is one of most important work in smart earth. Therefore, how to realize or design smart city leaves much to be desired. This paper puts forward some strategies and architectures for designing smart city based on geo-spatial information science and technology (GPS, GIS and RS), IT, communication technology, network technology (smart sensor web and ubiquitous sensor network). spatial data mining, high performance computing (grid computing and cloud computing), GPU, artificial intelligence and pattern recognition. The link and elements of smart city as well as applied key technologies in the future arc outlined with some typical application instances, which will meet the versatile requirements of smart city service better.