GPS vs BeiDou - LIDAR and RADAR

GPS stands for Global Positioning System, developed by the United States. Beidou is the Satellite navigation system developed by China. The GPS made operations with global coverage in 1995, whereas on 27 December 2018, BeiDou Navigation System ( BDS ) started providing Global Coverage. The GPS has 31 satellites orbiting earth, whereas BeiDou has 35 satellites. BeiDou has a more efficient and robust system providing accuracy in under 1 meters, whereas GPS accuracy is under 4.9 meters. 

BeiDou Navigation Satellite System also known as BDS is a Global Navigation Satellite System ( GNSS ) developed by China for a much more reliable Satellite Navigation. China already had an agreement with Russia to use the GLONASS for basic navigation but after the incident of 1995 during Taiwan Strait Crisis, where the Chinese Ballistic missiles lost track because of unexpected disruption. China decided to develop their own satellite Navigation and thus the BeiDou was started. 

The BeiDou system has 3 satellite constellations. The First one called the BDS-1 consists of just 3 satellites and provided limited coverage in and around the China region in the year 2000. The Second one consists of 10 satellites and became operational in China by December 2011. This constellation provided coverage for all of the Asia Pacific ( APAC ) region.

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