After 2003, the GPS chip industry has shown a thriving development like mushrooms after rain. At present, more than 10 manufacturers have designed and produced GPS chips, including SiRF, Garmin, M...
The GPS system consists of four parts: space constellation, user receiving equipment, wireless data communication equipment, and ground monitoring and control equipment. The space constellation is...
The application of GPS system in traffic management can accurately reflect the real-time position and operation trajectory of vehicles on the road network on the electronic map of the control cent...
1. Outbound alarm: After the vehicle drives out of the defined area, the onboard terminal will automatically report the situation to the center. If it leaves a certain area, it can set an alarm fo...
1. Word scheduling management: Management can send text scheduling information to a certain vehicle or a group of vehicles through text. The information sent will be saved for future verification....
The user data center subsystem is generally located in the management center, and its functions include real-time network data services and post event data services. The data processed by user dat...
RTK (real time kinematic) is a technology for real-time dynamic relative positioning based on carrier phase observations. The principle is to send the satellite data observed by the GPS receiver l...
The key of RTK technology lies in data processing technology and data transmission technology. During RTK positioning, the reference station receiver is required to transmit observation data (pseu...
The traditional geodetic survey and engineering control survey use triangulation and traverse network methods to conduct survey, which not only takes time and labor, requires inter visibility betw...
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