At 9:43 on June 23, China successfully launched the 55th Beidou navigation satellite with a long march 3B carrier rocket at Xichang Satellite Launch Center. The satellite has successfully entered the predetermined orbit. In the follow-up, orbit change, on

just The last global networking satellite of beidou-3 Fire up and take off! This is the third geostationary orbit satellite of beidou-3 global satellite navigation system. With the completion of the satellite in the "big chess game" of bei

At 9:43 today (June 23), the last global networking satellite of Beidou 3 was ignited and lifted off at Xichang Satellite Launch Center. The satellite was in normal condition and the launch mission was a complete success.The deployment of beidou-3 global

On the morning of June 23, the last global networking star of Beidou 3 was successfully launched. From its launch in 2009 to today's 30th satellite, the completion of the beidou-3 system marks the successful conclusion of the "three-ste

Escort intelligent high speed railway Beijing Zhangjiakou high speed railway is the first intelligent high speed railway in the worldBeidou navigation systemAnd other cutting-edge technologies, the intelligent Fuxing EMU with a speed of 350 km /

summary 3GPP defines 5g NR new generation wireless communication technology from R15 protocol. By introducing new air interface and new architecture, 3GPP makes the bandwidth larger and spectrum efficiency higher, so as to greatly improve the wireless c

The river flows eastward The stars in the sky participate in the Big Dipper It's 9:43 today Beidou global navigation system The closing star was successfully launched! The closing star of Beidou 3 ignited and took off.

On June 18, the founding meeting of China Mobile 5g smart mine alliance and the completion ceremony of the country's first 5g coal mine were held in Taiyuan, Shanxi Province, and video connection was made with the Beijing Branch venue. At the meeting,

The new industrial revolution is coming. In recent years, many countries have put forward their own industrial transformation and upgrading development strategies and names, such as industry 4.0 in Germany and intelligent manufacturing in China. However,

Summary: With the continuous development of mobile communication network, operators have different frequency band resources of high, medium and low. Radio band resources are valuable strategic resources. How to make rational and efficient use of spec

lately After the flood and rainstorm in South China, a sudden landslide collapsed in Shimen County, Hunan Province. Fortunately, there were no casualties because Before the landslide Shimen County fourteen household thirty-three p

GlobalfourAnalysis of large satellite navigation system Abstract: in order to further study the satellite navigation system, the four existing global satellite navigation systems are compared and analyzed: from the aspects of constellation, signal