At present, The BeiDou Navigation Satellite System (BDS) is the only navigation satellite system that features both navigation and communication. This dual function enables BDS to provide a wider range of services in broader scenarios. BDS has a hybrid constellation consisting of satellites operating in three kinds of orbits. Compared with other navigation satellite systems, BDS operates more satellites in high orbits to offer better anti-shielding capabilities. BDS also provides navigation signals on multiple frequencies, to improve service accuracy by using combined multi-frequency signals.
BDS is one of the four space-based navigation networks operating globally. By September 2019, BDS accessory rapid-positioning system independently developed by china, has served over 300 million Chinese mobile phone users to achieve sub-meter location accuracy. With the 5G technology now in commercial use, the 5G + BDS combo will be widely applied in scenarios, that require fast data transmission speed, low network latency and precise location and navigation services. For example BDS can be installed in driver-less tractors for high-accuracy sowing, to maximize farmland utilization and increase crop yields. it can achieve lane-level navigation, providing live updated logistics information.
Short message communication service is a unique function of BDS. If the ground communication signal is interrupted, the BDS short message service can still function efficiently. It is now been widely used in international rescue operations. it can be of great use in the event of earthquake, when ground signal are completely cut off. the ordinary navigation systems can only detect location of people in this cases but, BDS short message service can also send location and message out. in other words BDS not only know where people are, but also it can share their location and information with others.
On April 25, 2015, an 8.1 magnitude earthquake struck Nepal, causing a complete outage of water, electricity and mobile signals. Lack of proper communication among international rescue teams, created major obstacles in relief operations. Rescue teams from different countries all gathered in Kathmandu, luckily a team was have BDS equipments with short message service. So rescue teams go to remote areas where the situation was far worse. BDS help rescue teams a lot during the rescue operations.
Now BDS has become extremely versatile and can be applied in various sectors, including telecommunication, electric power transmission and distribution, disaster prevention and relief, emergency response and rescue, forest fire prevention, transportation, marine fishery, hydro logical monitoring and precision agriculture. BDS-based products are sold to more than 100 countries and regions. BDS is open to the whole world and is compatible with other navigation systems. it will surely benefit people from all over the world.