2020-07-02

China’s Beidou 3 was successfully appointed, and the United States quickly launched a new GPS satellite

By ddzyx

After the successful launch of Beidou No. 3, the fixed star was completed on June 30, Beidou No. 2 successfully transitioned to Beidou No. 3, and the layout of the Beidou system came to an end.

After the completion of Beidou 3, SpaceX of the United States also launched a new GPS Ⅲ SV3 satellite, This satellite is part of the US Department of Defense’s upgrade of the GPS system, and will gradually upgrade and replace the old GPS satellites.

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GPS III satellites, which will replace the oldest GPS satellites:

The launch time of this GPS satellite is about July, Beijing time At 4 o’clock in the morning on the 1st, it was very close to the time when the Beidou No. 3 closing star was successfully located.

This satellite was launched by the Falcon 9 rocket in Florida. It will join the two satellites launched in 2018 and 2019 into the GPS navigation system to replace the old satellite 20 years ago. Compared with the previous satellites, this new GPS satellite has 3 times the accuracy and 8 times the anti-jamming capability.

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The GPSⅢ SV3 satellite is about 4311 kg, which is the same as the Beidou system. The new GPS satellite has also improved compatibility, so that the GPS navigation system can work with other navigation systems to obtain a higher Accuracy. The new batch of GPS satellites also has a longer life and can work longer.

The launch mission was approved by Trump in December 2019. The launch was originally scheduled for April 2020, but the person in charge chose to postpone it until the end of June in US time.

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The only global navigation system comparable to GPS-Beidou:

United StatesGulf War1> After span>, the world realized the importance of the global navigation system and started to develop an independent global navigation system.

After decades of development, four global satellite navigation systems have been formed:US GPS, Russian GLONASS, EU Galileo, and China Beidou. Among them, Galileo and Beidou were gradually developed after the Gulf War.

Although there are 4 major global satellite navigation systems, GPS and Beidou system are well-deserved leaders.

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The Russian GLONASS global navigation system is a product of the Soviet period and is almost close to the edge of collapse. It wasn’t until 2001 that the Russian government launched a modern satellite to improve the system. Due to Russia’s focus on supporting the system, the GLONASS system recovered very quickly. Before the Beidou system took shape, GLONASS was the second largest navigation system in the world.

European Galileo navigation system is a joint project, declared to be”pure civilian”, China has joined the Galileo project, but the project has continued to quarrel and gradually become a”messy”, naturally can not be compared with GPS and Beidou system .

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as In terms of global navigation system, GPS and Beidou have a slight advantage in performance.

Beidou system, as a global navigation system that just ended, is equipped with more new technologies and uses tri-frequency navigation (GPS dual-frequency). It is faster than GPS in details, but the satellite launch of GPS III , Indicating that the global satellite navigation system may also enter the competition.

The global satellite navigation system, with the name”navigation”, can serve a large number of people, and also has important military significance. Modern wars have gradually evolved into information wars, and global satellite navigation systems will become Indispensable military equipment.

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US SpaceX enters a busy launch period:

SpaceX launched three rockets in June due to the Starlink project The regional network support will be postponed. In July, Starlink’s two satellite launch programs will be added.

It is worth mentioning that the Starlink project plans to launch 12,000 satellites. Such a huge scale has caused many astronomers to protest, because a large number of satellites may interfere with the Earth’s astronomical observation project.

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