Most people have map apps on their phones that can show their locations and guide them to where they want to go. But how do these app systems know your 1 at any time or place? They find you by using satellite navigation (satnav) systems (卫星导航系统).
A satnav system uses groups of satellites to find the users locations. This location information is then sent to a 2, such as a smart phone.
The first satnav system is the Global Positioning System (GPS) (全球定位系统), which belongs to the United States. The system is the world's 3 satnav system. But China's satellites are important 4 improving the satnav system. Beidou, has overtake (超过) GPS in size, Japan's Nikkei Asian Review reported.
China5 Beidou's first navigation satellite into space in 2000. China also became the 6 country to build a satnav system after the United States and Russia, People's Daily reported. Over 30 7 in Africa and the Middle East are 8 Beidou system right now.
With its world-leading technology, Beidou is leading Chinese people to a better life9 playing important 10 in different areas, according to Xinhua News.
For example, over 6.2 million vehicles in China are using Beidou for navigation, according to a report on the Beidou system's construction (建造) and development.
At the newly-built Beijing Daxing International Airport, Beidou has been used to keep track of (追踪) loading and unloading vehicles 11 and outdoors. When the 12 opens, each baggage cart has Beidou navigation equipment to help passengers get their luggage 13.
For a satnav system, the 14 of satellites is important for improving the system's positioning accuracy(定位精度). The more satellites, the15 accurate the positioning is. The satellite navigation system is useful in many ways.
