The manufacturer compares the difference between Beidou positioning and GPS positioning.plug & play Obd gps tracker custom

　　1. Formed a satellite

　　Beidou Positioning: The space section of the Beidou satellite navigation system consists of 5 static orbital satellites and 30 non -static track satellites. China plans to cover the Asia -Pacific region around 2012, covering the world around 2020. 16 Beidou navigation satellites have been successfully launched.

　　GPS: GPS is composed of 24 satellites (21 working satellites; 3 spare satellites). It is located above 20200km from the surface of the ground with a operating cycle of 12h. The satellites are evenly distributed on the 6 rail surfaces (4 per track surface), and the orbital angle is 55 °. The distribution of satellites allows more than 4 satellites to be observed anywhere and time around the world, and can be pre -stored in satellites.

　　Second, coverage

　　Beidou Positioning: Beidou Navigation System is a regional navigation system covering China. It covers a scope of about 70 ° ~ 140 ° east and 5 ° ~ 55 ° north latitude. The Beidou Satellite System has achieved full coverage of Southeast Asia.

　　GPS: The global all -weather navigation system. It can ensure that 6-9 satellites can be observed at any place and time on the earth (in fact, at most 11).

　　3. Positioning accuracy

　　Beidou Positioning: The accuracy of the civil service of the "Beidou" positioning system has reached 10 meters, and the positioning accuracy of the new generation of navigation chips can reach 2.5 meters. The area with poor satellite distribution, poor positioning accuracy or unable to locate.

　　GPS: The accuracy of stand -alone navigation has been achieved by about 10 meters. If comprehensive positioning, the accuracy can reach centimeter and millimeter. However, the accuracy of openness in the civilian field is about 10 meters.

　　Fourth, the main function

　　BDS: Quick positioning, providing users in the service area with all -weather and real -time positioning services. The accuracy of positioning is equivalent to GPS. SMS communication can transmit up to 120 Chinese characters at a time. Essence

　　GPS: A comprehensive, all -weather, full -time, high -accuracy satellite navigation system, providing global users with low -cost, high accuracy three -dimensional positions, speed, and accurate timing of navigation information.

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