source:truck tracking webfleet solutions release time:2023-12-09 Hits: Popular:realtime gps tracker online
1. Coverage: The Beidou positioning system is a regional navigation system that covers mainland China. The coverage range is approximately 70 ° -140 ° E and 5 ° -55 ° N. GPS is an all-weather positioning system that covers the world. It can ensure that 6-9 satellites can be observed simultaneously at any location and time on Earth (in fact, up to 11 satellites can be observed).
2. Number of satellites and orbital characteristics: The Beidou positioning system sets up two geostationary satellites with an equatorial angular distance of approximately 60 ° on the Earth's equatorial plane. GPS sets up 24 satellites on 6 orbital planes, with an equatorial inclination of 55 ° and an equatorial angular distance of 60 ° on the orbital plane. The satellite is in a quasi synchronous orbit and orbits the Earth for 11 hours and 58 minutes.
3. Positioning principle: The Beidou positioning system is an active two-way ranging two-dimensional navigation system. The ground center control system solves and provides users with three-dimensional positioning data. The GPS positioning system is a passive pseudocode one-way ranging 3D navigation system. Independently solve their own 3D positioning data by the user's device. The working principle of Beidou brings two problems. Firstly, it loses radio concealment while positioning users, which is quite disadvantageous in the military. Secondly, due to the fact that the equipment must include a transmitter, it is at a disadvantage in terms of size, weight, price, and power consumption.
4. Positioning accuracy: The three-dimensional positioning accuracy of the Beidou positioning system is about tens of meters, and the timing accuracy is about 100ns. The GPS three-dimensional positioning accuracy P-code has been improved from 16m to 6m, and the C/A code has been increased from 25-100m to 12m. The timing accuracy was about 20ns recently.
5. User capacity: Due to its active bidirectional ranging inquiry response system, the BeiDou positioning system not only receives inquiry signals from the ground center control system but also requires user equipment to transmit response signals to the synchronous satellite. Therefore, the user capacity of the system depends on the allowed channel blocking rate, inquiry signal rate, and user response frequency. Therefore, the user equipment capacity of the Beidou positioning system is limited. GPS is a one-way ranging system, and user devices can perform ranging and positioning as long as they receive navigation messages sent by navigation satellites. Therefore, the capacity of user devices for GPS positioning is infinite.
6. Survival capability: Like all positioning satellite systems, Beidou is based on the central control system and satellite operations. However, Beidou's dependence on the central control system is significantly greater because positioning solutions are performed there rather than by user equipment. To compensate for the vulnerability of this system, GPS is developing interstellar horizontal data link technology, so that GPS satellites can operate independently in the event of the main control station being destroyed. The "Beidou" system theoretically excludes this possibility, as once the central control system is damaged, the system cannot continue to operate.
7. Real time performance: The positioning application of "Beidou" users needs to be sent back to the central control system, which calculates the user's three-dimensional position data before sending it back to the user. During this process, it needs to go back and forth through the geostationary satellite, and with satellite forwarding, the processing time delay of the central control system is longer. Therefore, for high-speed moving objects, the positioning error is increased.
Read recommendations:
Last article:gps vehicle tracker.How to use GPS navigators
Next article:gps vehicle tracker.The difference between Beidou satellite and GPS
Related Information
gps tracker no monthly fee
2023-03-16fleet gps tracking sales
2023-04-23Pet GPS Tracker manufacture
2023-03-16Pet GPS Tracker sales
2023-04-11mini gps tracker maker
2023-04-23pet gps tracker cat
2023-04-11Gps speed limiter wholesaler
2023-04-23Best hidden gps trackers
2023-04-11Magnetic gps tracker
2023-04-11car gps tracker Processing
2023-04-23personal gps tracker Production
2022-09-06G09L -6 inch Tail light tracker
2022-06-20GF20-Mini Magnet GPS Tracker
2022-06-21TK08AL- RFID Car GPS Tracker
2023-10-07G07L 4G GPS Tracker
2022-09-06GPS Navigation receiver
2023-06-02How to use the car GPS navigator.realtime gps tracker online Vendor
2023-05-19GPS active ranging and passive range.gps tracker no monthly fee Production
2023-04-20What is the function of gps tracker.mileage tracking webfleet solutions
2023-03-13Civil GPS positioning accuracy will reach 1 meter error
2023-02-22How to prevent the disassembly of the car GPS locator?personal gps tracker manufacturer
2023-03-15Bluetooth GPS application.gps tracker online maker
2023-08-04How to buy GPS.Magnetic gps tracker manufacturer
2023-05-24Why is it recommended to install the GPS vehicle positioning system?Portable car gps systems
2023-03-24Basic architecture of GPS receiver
2022-10-15What should I do if GPS equipment is always demolished?
2023-02-14GPS scheme from hard to soft.obd-II port gps tracker Production
2023-05-23Pet intelligent positioner escort your pet security safety
2023-02-17Tongda GPS positioning monitoring system technology for you
2022-08-24gps vehicle tracker.The significance of building a vehicle GPS satellite positioning management and
2023-11-17