Beidou is officially launched. Why do we build Beidou?

Beidou officially launched

Today (July 31), the completion and opening ceremony of the Beidou-3 global satellite navigation system was held in the Great Hall of the People.

Xi Jinping announced: "The Beidou-3 global satellite navigation system is officially launched!" There was warm applause at the scene.

On June 23, the last Beidou-3 global networking satellite successfully flew into space after a "restart" launch from the Xichang Satellite Launch Center. At this point, all 30 Beidou-3 global networking satellites are in place, and the constellation deployment of my country's Beidou-3 global satellite navigation system has been fully completed, six months ahead of original plan.

Why do we build BeiDou——China's BeiDou breakthrough

From the launch of the BeiDou-1 system project in 1994 to the completion of the BeiDou-3 networking satellite launch mission today, it took China's BeiDou team more than 20 years to develop and launch 55 satellites.

During this period, China's Beidou people have gone through a difficult journey from "catching up" to "leading with head held high", from "being controlled by others" to "autonomous control", and from "regional service" to "global guidance".
"Four Questions about the Beidou Soul"

“How to build a high-precision space beacon?” “Who will measure our own position?” “How can China’s Beidou maintain stability?” “How can China’s Beidou multiple satellites work safely and reliably?”

In an interview, Xie Jun, deputy chief designer of the Beidou-3 project of the Fifth Academy of the China Aerospace Science and Technology Corporation and chief designer of the Beidou-3 satellite, said that he is often asked such questions, and some Beidou people even call them the "Four Consecutive Questions of the Beidou Soul."

Xie Jun told reporters that the "Four Questions" involved four aspects: satellite structure, overall navigation technology, core unit development, and independent innovation breakthroughs. The road to localization is difficult. Through the exploration and practice of the three-generation Beidou system, Chinese aerospace workers have lived up to the time and delivered a brilliant answer.

"We have also experienced the frustration of having our key units and components 'choked' by some countries, but we have never wavered in our determination to pursue independent and controllable development." Xie Jun said that Beidou people are well aware that Beidou is a national weapon that is related to the modernization of national defense and the development of the national economy.

"Key core technologies cannot be obtained, bought or begged for." To some extent, this sentence is an important reason why my country independently developed the Beidou satellite navigation system.

Chen Zhonggui, chief designer of the Beidou-3 satellite, said that the Beidou navigation system provides time and space position benchmarks for national security, social and economic development, and people's lives, and has a huge impact on the country and people's lives.

"If key core technologies are provided by others, where will the sense of security come from?" Chen Zhonggui said, for example, the current hot new infrastructure will be an important direction for the next stage of my country's construction and development. The time benchmark and spatial position benchmark are the crucial foundations. "The Beidou navigation system is the infrastructure of the new infrastructure, the foundation of the foundation."

As the final star of the Beidou global navigation system, the Beidou-3 satellite launched this time adheres to the idea that Beidou's research and development has always been firmly based on localization, and is also a culmination of localization.