They are all navigation satellites, why does the United States only need 24 GPS, while China's Beidou requires more than 50?

Tech 2023-11-03 14:08:05 Source: Network

There are many similarities in technology between the Beidou and GPS systems, but there are also some differences. Firstly, from the perspective of signal propagation, both use satellites to transmit navigation signals, and ground receivers determine position information by solving the signals

There are many similarities in technology between the Beidou and GPS systems, but there are also some differences. Firstly, from the perspective of signal propagation, both use satellites to transmit navigation signals, and ground receivers determine position information by solving the signals.

In terms of the number of satellites, the Beidou system has 56 satellites, while the GPS system has 24 satellites. Although there are more Beidou satellites, it does not necessarily mean that their performance is better than GPS. A large number of satellites can increase the coverage and stability of signals, but it also increases the complexity and maintenance cost of the system.

Technically, the Beidou system performs well in positioning accuracy, especially in the Asia Pacific region, where its positioning accuracy can reach the meter or even decimeter level, while the global average positioning accuracy of the GPS system is in the meter level.

In addition, the Beidou system also provides some unique enhanced services, such as short message communication services and high-precision enhanced services, which are not provided by the GPS system.

Overall, although the Beidou system has some technological advantages, the GPS system still dominates due to its early layout, more mature technology, and a large global user base.

06 The United States has absolute control over GPS as a country that develops and operates GPS systems. The US military can intervene in the GPS system at any time, including reducing signal accuracy and cutting off signals in specific areas.

This kind of control is particularly evident in military conflicts, where the US military can use GPS for precise strikes, while opponents may lose navigation capabilities due to interference with GPS signals.

Although the GPS system is now open to global civilian use, the United States reserves the right to restrict the system in specific circumstances. This is particularly evident at some critical moments, such as during the Galaxy incident, when the United States pressured China by cutting off GPS signals.

The independence and security of the 07 Beidou system are different from those of countries that rely on GPS. China has independently developed the Beidou satellite navigation system, which fundamentally solves the independence and security issues of navigation and positioning.

The construction and operation of the Beidou system is completely under China's independent control, and even in military conflicts or other emergency situations, it will not be interfered with by external forces.

In addition, the technical level and service quality of the Beidou system have reached the world's advanced level, providing reliable navigation and positioning services for the Chinese military and civilians.

In summary, both the US GPS system and the Chinese Beidou system are world advanced satellite navigation systems, each with its own advantages and characteristics. The Beidou system has demonstrated excellent performance in coverage, positioning accuracy, and enhanced services, making it a significant achievement in China's aerospace technology field. Although the GPS system has mature technology and a large user base, its dependence on the United States also poses certain security risks to users.

Both the development and application of Beidou and GPS have played an important role in promoting human social progress and enhancing national security levels. I hope that in the future, both parties can jointly promote the development of global satellite navigation systems on the basis of equality and mutual benefit, benefiting all humanity.

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