Among them, remote sensing is used to obtain the information of the earth's surface, global positioning system (GPS) is used to determine the geographical position, and geographic information system is used to store, manage and analyze geographic data. Broadly speaking, 3S technology also includes Global Navigation Satellite System (GNSS), which is a general term for all satellite positioning systems including GPS.
3S technology is the product of the combination of space technology, sensor technology, satellite positioning and navigation technology, computer technology and communication technology. Through the integration of these technologies, people can collect, process, manage, analyze, express, spread and apply spatial information. This modern information technology provides a powerful tool for people to better understand and use various resources on the earth.
The value of 3S technology is mainly reflected in the following aspects:
1. Improve the efficiency and accuracy of data acquisition: Remote Sensing (RS) and Global Positioning System (GPS) in 3S technology can efficiently and accurately acquire a large number of geographic information data, which greatly improves the efficiency and accuracy of data acquisition.
2. Providing decision support: Geographic Information System (GIS) can manage and analyze the obtained data and provide powerful decision support for decision makers.
3. Promote scientific research: 3S technology provides new observation means, description language and thinking tools for scientific research, and promotes the development of scientific research.
4. Improve the efficiency of resource management: In land resource management, agriculture, ecological environment monitoring and other aspects, the application of 3S technology has significantly improved the efficiency and effect of resource management.
Reference to the above content: Baidu Encyclopedia -3s