The application of geographic information technology in geographical environment, what are the advantages of various technologies?

Advantages of remote sensing: ① Improve the traditional working methods of research work, save manpower and financial resources, and improve efficiency. Analysis and research on the collection and transmission of information from the field observation surface; The remote sensing technology of the ground system results starts with the research and analysis, and focuses on selecting some points and lines for field verification and inspection. From static to process, the remote sensing information serves as an important information source, which provides conditions for the transformation and development of regional geographical environment research from qualitative to qualitative.

Advantages of GPS: it provides accurate three-dimensional coordinates (accuracy, latitude and altitude), speed and time, and has the characteristics of omnipotence (land, sea and air), globality, all-weather, continuity and real-time.

Advantages of GIS: ① urban planning and management-using GIS for urban planning and design, project site selection, etc. (2) Urban infrastructure management-including urban road traffic management, engineering design, daily maintenance, emergency repair, etc. Electricity, tap water, gas and other departments; (3) Urban environmental management-urban environmental planning, urban environmental monitoring and evaluation, urban environment and regional sustainable development decision analysis by using GIS.