In this information age, satellite navigation and positioning technology has developed rapidly and its application scope is becoming wider and wider. It has now spread to all sectors of the national economy and has penetrated into people's daily lives. I believe that many people will think of GPS when they hear words such as positioning and navigation. Indeed, GPS is currently the most widely used positioning and navigation system in the world and covers the largest population. However, in recent years, my country has developed the Beidou satellite navigation system, which is better than the US GPS. So how do our mobile phones use the Beidou antenna system for positioning in life? Let me tell you below:

The Beidou antenna navigation system consists of three parts: the space segment, the ground segment, and the user segment. The space segment is planned to consist of 35 satellites, including 5 geostationary orbit satellites, 27 medium earth orbit satellites, and 3 inclined synchronous orbit satellites.

The ground segment consists of a master control station, an injection station, and a monitoring station. The master control station is used for system operation management and control, the injection station is used to send signals to the satellite and control and manage the satellite, and the user segment is the user's terminal. The receiver needs to capture and track the satellite's signal and perform positioning calculations in a certain way based on the data.

The positioning principle of the first generation Beidou antenna belongs to active positioning, which requires the user terminal to actively send signals and has poor reliability. The latest second generation Beidou antenna has adopted passive positioning technology similar to GPS. That is, the user receives at least 4 satellite signals for positioning.

Because the number of satellites is more than that of the US GPS positioning system, the positioning signal of the Beidou positioning system is stronger and more accurate. In addition, the Beidou antenna has a unique short message transmission function, which can be used in many aspects such as military, rescue, and scientific research. It can solve "Where am I?" and "Where are you?" at the same time.