source:truck tracking webfleet solutions release time:2022-10-20 Hits: Popular:realtime gps tracker online
The system composition of the Beidou Navigation and Positioning system is as follows: it consists of two geostationary satellites (800E and 1400E), one in-orbit backup satellite (110.50E), the central control system, the standard calibration system and various user machines, etc.
The working process of the system is as follows: First, the central control system sends inquiry signals to satellite I and satellite II simultaneously, and broadcasts to users in the service area of the satellite forwarder. The user responds to the inquiry signal from one of the satellites and simultaneously sends the response signal to both satellites, which is forwarded back to the central control system. The central control system receives and demodulate the signal sent by the user, and then carries on the corresponding data processing according to the applied service content. For the positioning application, the central control system measured two time delays: namely, the inquiry signal sent from the central control system was forwarded to the user by a certain satellite, and the user sent the positioning response signal was forwarded back to the central control system by the same satellite. And the delay of sending an inquiry signal from the central control, reaching the user via the same satellite mentioned above, and the user sending a response signal and forwarding it back to the central control system via another satellite. As a result of the position of the center control system and the two satellites were known, and thus can calculate the amount of users by the above two delay, the distance to the first satellite and the user to the sum of two satellites distance, so they know the user in a first satellite as a sphere, its center and between two satellites as the focus of the ellipsoid to pay online. In addition, the central control system can find the user's elevation value from the digital topographic map stored in the computer and know that the user is on an ellipsoid parallel to the earth reference ellipsoid. Thus, the central control system can finally calculate the three-dimensional coordinates of the user's point, which are encrypted and sent to the user by the outbound signal.
Read recommendations:
personal gps tracker wholesaler
TK100B- Accurate Pro version GT06/TK100
Last article:Advantages of Bluetooth GPS
Next article:GPS China Beidou navigation satellite
Related Information
Dog gps tracker supplier
2023-04-23Dog gps tracker Solution
2023-04-23Dog gps tracker
2023-04-11GPS Tracker maker
2023-04-114G GPS Tracker for vehicles distributors
2023-04-23fleet gps tracking company
2023-04-23real-time gps tracking
2023-03-16Magnetic gps tracker supplier
2023-04-23Fleet management expert
2023-03-16fleet gps tracking Production
2023-04-23G200NY -Cow/Camel GPS Tracker
2022-06-21personal gps tracker Production
2022-09-06G183 serials -JOBD GPS Tracker
2022-09-06G05N Vehicle Tracker
2022-06-21TK200AM-Disposable GPS Tracker
2022-06-21Causes of GPS positioning errors
2022-07-12GPS helps you avoid the electronic eye
2023-02-02How do car loan companies use car GPS to reduce risks?gps vehicle tracker Manufacturing
2023-03-17Why does the GPS locator always display offline status?
2022-12-15Precautions for installation of Beidou 4G wiring GPS positioner.obd-II port gps tracker Manufacturin
2023-03-28gps vehicle tracker.The role of installing GPS satellite positioning devices in the sales and leasin
2023-10-27GPS performance indicators
2022-08-26The theory of relativity provides the basis for GPS
2022-09-236 GPS/GPRS/CDMA antenna installation instructions.gps vehicle tracker Production
2023-08-02GPS location service.personal gps tracker distributors
2023-05-24Working principle of locator.vehicle gps tracker supplier
2023-07-19Bluetooth GPS Technology Features.gps tracker für auto webfleet solutions
2023-08-04School bus GPS positioning and 3G wireless video monitoring management.Magnetic gps tracker Factory
2023-07-10China Beidou Satellite Navigation System.obd11 gps tracker verizon manufacture
2023-03-11GPS satellite on test stand.GPS Tracker
2023-09-04