Surveying
Surveying and mapping is an industry that obtains, processes and provides information about the earth's gravity field and the earth's surface geographic environment and human information, mainly including astrogeodesy, photogrammetry and remote sensing, mapping, engineering surveying and ocean mapping. With the continuous maturity of global satellite navigation and positioning technology and the gradual improvement of global satellite navigation system, the surveying and mapping industry has been greatly developed, and closely promote the popularization of related surveying and mapping technology and the application of measuring equipment.
The role of GNSS
When high-precision antennas are used in continuous operation of reference stations
and mobile stations,The reference station obtains accurate position information through long-term observation, and transmits the observation data
to the control center in real time through the data communication system. After calculating the error correction parameters within the area, the control center then passed the ground-based enhanced system wide-area kinematic and satellite-based enhanced
system, etc., and sent the erro information to the mobile station (client) through the RealTimeKinematic real-time dynamic measurement technology, so as to finally enable
users to obtain accurate coordinate information and enable measurement and mapping applications.