Broadly speaking, it is remote sensing, geographic information system and global navigation satellite system, in which GNSS refers to all satellite positioning systems including GPS.
"3s" is the general name of modern information technology, which combines space technology, sensor technology, satellite positioning and navigation technology with computer technology and communication technology, and is highly integrated into many disciplines to collect, process, manage, analyze, express, spread and apply spatial information.
Extended data:
With the continuous development of 3S technology, the "3S" integrated technology, which closely combines remote sensing, global positioning system and geographic information system, shows a broader application prospect.
Based on RS, GIS and GPS, the related parts of three independent technologies are organically integrated to form a powerful technical system, which can realize the rapid, flexible, accurate and reliable collection, processing and updating of various spatial and environmental information.
Reference materials? Baidu Encyclopedia -3S