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:
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
4G GPS Tracker for vehicles manufacture
2023-04-23real-time gps tracking supplier
2023-04-234G GPS Tracker wholesale
2023-04-23GPS Tracker Vendor
2023-04-11Gps speed limiter wholesale
2023-04-234G GPS Tracker Manufacturing
2023-04-23mini gps tracker
2023-04-11truck tracking webfleet solutions
2023-03-16SecumoreGPS
2023-03-16obd2 tracker
2023-03-16G07L 4G GPS Tracker
2022-09-06G900LS-4G Car GPS Tracker
2023-10-0610000mAh Magnetic Asset GPS Tracker
2025-04-08personal gps tracker Production
2022-09-06G200(L) -Magnet GPS Tracker
2022-06-20The application processor completes the GPS/Galileo function
2022-10-15The cause of error in the GPS vehicle positioning system
2023-04-03GPS application in agriculture.realtime gps tracker online manufacture
2023-04-24GPS death phenomenon
2022-09-14How to realize the function of GPS monitoring system?
2022-12-02The role of UAV GPS module
2022-10-13The car GPS positioner plug -in card is still free of card.van tracker webfleet solutions
2023-03-14GPS introduction.real-time gps tracking Vendor
2023-05-27The concept of static drift of the car GPS positioner and cause.plug & play Obd gps tracker manu
2023-03-25GPS satellite positioning
2023-02-15Composition of GPS system
2022-08-12Factors related to GPS satellites
2022-09-22What will be affected by the accuracy of LBS positioning.gps tracker no monthly fee manufacturer
2023-03-10The advantages and disadvantages of the flat antenna of the GPS vehicle positioning terminal
2023-04-06The introduction of GPS in the field of logistics.gps tracker no monthly fee Production
2023-05-06