source:truck tracking webfleet solutions release time:2022-09-26 Hits: Popular:realtime gps tracker online
American GPS: It was designed and developed by the U.S. Department of Defense in the early 1970s and completed in 1993. In 1994, the United States announced that it would provide the world with the right to use GPS for free within 10 years, but the United States only provides low-precision satellite signals to foreign countries. It is believed that the system has a "back door" set up by the United States, in the event of a war, the United States can shut down information services to a certain area. EU "Galileo": In 1999, Europe proposed a plan to launch 30 satellites to form the "Galileo" satellite positioning system. The program was officially launched in 2009. Russian "GLONASS": Not yet deployed. Beginning in the 1970s, at least 18 satellites were required to ensure coverage across Russia; for global positioning services, 24 satellites were required. China BeiDou Navigation Satellite System (BeiDou (COMPASS) Navigation Satellite System): It is a global satellite navigation system independently developed and operated by China. The goal of system construction is to build an independent, open and compatible, technologically advanced, stable and reliable Beidou satellite navigation system covering the world, to promote the formation of the satellite navigation industry chain, to form a complete national satellite navigation application industry support, promotion and guarantee system, and to promote satellite navigation. Widely used in various industries of the national economy and society. Beidou satellite navigation system consists of three parts: space segment, ground segment and user segment. The space segment includes 5 geostationary orbit satellites and 30 non-geostationary orbit satellites, and the ground segment includes several ground stations such as the main control station, injection station and monitoring station. , the user segment includes Beidou user terminals and terminals compatible with other satellite navigation systems. In 2003, my country's Beidou No. 1 was completed and put into operation. Unlike GPS, the "Beidou" command plane and terminal can communicate in two directions. After the Sichuan earthquake on May 12 last year, the Beijing Armed Police Command Center and the Sichuan Armed Police Force used the "Beidou" to conduct hundreds of exchanges. The Beidou-2 series of satellites will enter the peak period of networking this year, and it is expected to form a global coverage system consisting of more than 30 satellites in 2015. At present, at 0:12 on January 17, Beijing time, my country successfully launched the third "Beidou" navigation satellite into the predetermined orbit with the "Long March 3C" carrier rocket at the Xichang Satellite Launch Center. At 23:53 on the evening of June 2, 2010, China successfully launched the fourth Beidou navigation satellite into the predetermined orbit of space with the "Long March 3C" carrier rocket at the Xichang Satellite Launch Center.
Read recommendations:
G08L - 4inch Smart Tail Light Tracker
Last article:Looking at the Development of GPS Navigation Products from the Demand of Electronic Map Products
Next article:How to choose GPS
Related Information
Gps speed limiter wholesale
2023-04-23realtime tracking device
2023-03-16cantrack g05
2023-04-23mini gps tracker wholesaler
2023-04-23gps vehicle tracker company
2023-04-11apple airtags
2023-03-16mileage tracking webfleet solutions
2023-03-16Gps speed limiter manufacturer
2023-04-234G GPS Tracker Manufacturing
2023-04-23fleet tracking webfleet solutions
2023-03-16G500L -4G OBD GPS Tracker
2022-09-06YG119- Hunting Dog GPS tracker
2023-10-07TK100N- Multi functional GPS Tracker
2023-10-06G900LM-4G Car GPS Tracker
2025-03-25P60L Personal gps tracker
2025-07-11GPS Fundamentals
2022-09-2350 fire trucks are equipped with GPS global positioning and navigation system
2022-08-24Application in emergencies GPS.plug & play Obd gps tracker Production
2023-05-06GPS data.portable gps tracker Manufacturing
2023-05-20Introduction to GPS application scope
2022-12-13Principle of GPS system
2022-12-09Vehicle Management System Based on Differential GPS Technology
2022-12-20Handheld GPS performance.OBD GPS Tracker distributors
2023-07-17How to choose the installation location of the wireless GPS positioner?4G GPS Tracker for vehicles
2023-03-22China Beidou Satellite Navigation System.obd11 gps tracker verizon manufacture
2023-03-11The Application of GPS in Automobile Tracker.gps tracker for trailer distributors
2023-08-25A GPS satellite
2022-10-12Domestic product function
2022-11-01The advantages of the Beidou satellite positioning system.fleet gps tracking Production
2023-06-08GPS system architecture and analysis
2022-12-08