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:
4G GPS Tracker for vehicles price
GPS positioner application in logistics management
International requirements aircraft must be equipped with GPS
Last article:Advantages of Bluetooth GPS
Next article:GPS China Beidou navigation satellite
Related Information
fleet gps trackers maker
2023-04-23Cantrack Login
2023-04-23obd2 tracker supplier
2023-03-16rastreador tracker
2023-03-16gps tracker for bike Factory
2023-04-23mini gps tracker Solution
2023-04-23real-time gps tracking price
2023-04-23simple gps tracking company
2023-04-23pet gps tracker cat Manufacturing
2023-03-16gps vehicle tracker maker
2023-04-23TK100N- Multi functional GPS Tracker
2023-10-066000mAh Magnetic Asset GPS Tracker
2025-03-31G900LM-4G Car GPS Tracker
2025-03-25G07L 4G GPS Tracker
2022-09-06G200(L) -Magnet GPS Tracker
2022-06-20What are the main parts of the receiver of the car GPS
2023-06-15Buses equipped with GPS for private use should be held accountable
2022-08-11How to install and place the GPS tracker with more accurate positioning and stronger signal
2022-07-14Can a gps tracker be made smaller?
2022-07-16WAP version of mobile phone GPS positioning
2022-10-21GPS transmission network.Hidden GPS Trackers Solution
2023-07-10Three wiring line search methods for installing GPS positioner.realtime gps tracker online supplier
2023-04-11UUGPS positioning system
2022-09-19GPS knowledge base: what is RTK technology
2022-12-02GPS functions.Cantrack Login
2023-09-04How do car loan companies use car GPS to reduce risks?gps vehicle tracker Manufacturing
2023-03-17What is a GPS positioning management system?
2023-11-01The strategic role of satellite positioning system and commercial interests
2022-11-26Disadvantages of GPS cameras.realtime gps tracker online distributors
2023-08-16Application in emergencies GPS.plug & play Obd gps tracker Production
2023-05-06