Tianchang No. 2 03 Star successfully launched: Reporting the earth, we are the stars of "chasing stars"

On July 13, my country used the Long March No. 3 Rocket Rockets at the Xichang Satellite Launch Center. It successfully launched the Sky Chain No. 2 Star in the Xicheng No. 2 star, and the satellite entered the scheduled track smoothly. The move marks the completion of Samsung's network networking of my country's second -generation relay satellite system. The ability of the two generations of global relay satellite systems to serve at the same time will be greatly improved.

Tianlin No. 2 on the raily intention (Photo Conferry at the Fifth Hospital of Aerospace Science and Technology Group)

my country has carried out the development of the relay satellite since 2003, and completed the Samsung No. 1 Samsung network network in 2012, becoming the second country in the world with global coverage capacity relay satellite system. In the 10 years from 2012 to 2022, my country realized a huge leap from Tianchang 1 to Tianchain No. 2, and the Tianji measurement and control and data relay capabilities reached a new level.

From nothing, the "chain" of the heavens and the earth is neighboring

"The relay satellite is the" satellite of the satellite "." Zhan Keqiang, deputy commander of the 03 star deputy commander of the Fifth Hospital of Aerospace Technology Group, introduced it. And the obtained data is passed back to the ground in real time. It can also greatly reduce the number of ground stations and measures and control ships, and the economic advantages are very obvious. "

Before the Sky Chain satellite was put into use, my country has been relying on the launch and control of the spacecraft to support the spacecraft and the rail letter task of supporting the spacecraft. In October 2003, the Shenzhou -5 manned spacecraft "Talking" with the ground control station several times during the track. "This kind of call has strict restrictions. After receiving a spacecraft signal at the ground measurement and control station, you must use a very short time window to quickly communicate. For the rest of the time, the astronauts can only silently wait for the next communication cycle in the small closed cabin. . "Zhang Peng, chief commander of the Fifth Hospital of Aerospace Science and Technology Group, said.

Sky Chain No. 1 in the rails (Photo Conferry at the Fifth Hospital of Aerospace Science and Technology Group)

In 2008, 2011, and 2012, my country successfully launched the Sky Chain No. 1 01, 02, and 03 stars to complete Samsung's rail network network. The three satellites are located over Africa, Indian Ocean, and the Pacific Ocean, which has achieved nearly 100%coverage of medium and low -oriented spacecraft. At 10 am on June 20, 2013, on the Shenzhou No. 10 manned spacecraft, astronaut Wang Yaping conducted a 51 -minute signal and clear "space lecture" for primary and secondary school students across the country. "From intermittent communications to continuous transmission, huge changes have benefited from the completion of the Tianchain No. 1 system." According to Zhang Peng, the 04 star of the Sky Chain No. 1 in my country in 2016 was successfully launched in 2021, and it was successfully launched in 2021. Tianchang No. 1 05 star, so far the first generation of relay satellite systems in my country ended the finals.

From there to strong, the relay satellite "Sky Group lineup" is upgraded again

In 2010, my country launched the development of Skylin No. 2 satellite. The Tianchang No. 2 satellite is developed by the Oriental Red Public Platform. On the basis of fully inheriting the first generation of relay satellite technology status, more advanced load technology is used to configure multiple new antennas. The number of frequency, extension bandwidth and forwarder channels, the number of services for user targets has doubled, and the total transmission rate reaches Gigabit Bit (GBIT/S) per second. Synchronous rail users' service needs.

In March 2019, the 01 star of Tianchain 2 successfully launched, opening the prelude to the renewal of the Chinese relay system. Satellite No. 2 satellite and Tianchang No. 1 system are mainly to provide data relay and measurement and control services for manned spacecraft and mid -to -low -orientation resource satellites for spacecraft, space laboratories, space stations, etc., and provide measurement and control support for spacecraft launch Essence

On June 23, 2021, General Secretary Xi Jinping conducted a "world call" with Shenzhou 12 astronauts. On the big screen, the video screen of the astronauts is clear and the sound is crisp and loud. At the same time, on the static orbit of 36,000 kilometers over the equator, the Tianjin relay system consisting of Tianchang No. 1 03 star, 04 star, and Tianchain No. 2 star in real time guarantees the interaction of the heaven and earth in real time.

Samsung No. 2 Samsung on the Rail Group (Photo Conferry at the Fifth Hospital of Aerospace Science and Technology Group)

In December 2021, the 02 star of Tianchain 2 was successfully launched. Just 7 months later, the space of the Sky Chain No. 2 was "entered". This has greatly verified the rapid development of Skylin 2 satellites, providing important support for the subsequent second -generation LD -star multi -star rapidly on the rail network network. The pace of my country's Tianji test control and transmission network construction has further accelerated.

"1+1+1> 3", the efficiency of Tianji services is greatly improved

Due to the limit of the number of antenna terminals and the number of satellites, the service capabilities of the relay satellite system cannot meet my country's growing data relay needs. The global networking of the second -generation relay satellite system will greatly alleviate the overall planning of the resource of the relay satellite system, and give play to the application efficiency of "1+1+1> 3". "Today, the astronauts on the China Space Station can conduct video and voice communication with the ground at any time to enjoy the all -time WiFi intelligent life. For the important space activities supported by strong signals and long arc segments, Tianchain No. 2 is available. Being able to deal with it calmly, "Zhan Ke said proudly.

During the launch of high -orbit communication satellites, some rail arc segments are in the blind spots of the ground measurement and control station in the domestic ground. In the past, measurement and control links were usually used to ensure the safety of the launch section. In April 2022, the Middle Star 6D was successfully applied to the relay and control terminal to achieve the sky -based test control with the Sky Chain series satellites, which fully verified the feasibility of providing measurement and control services for the high -orbit communication satellite for high -orbit communication satellites. It is reported that this model can effectively reduce the dependence of the satellite launch phase on the measuring ship, which greatly enhances my country's independent measurement and control capabilities of satellites. In June of this year, Shenzhou No. 14 manned spacecraft flew to space with three astronauts and will achieve the goal of staying for 6 months. Zhang Peng said that within these six months of staying, the two generations of Tianchain satellite system will set up a reliable information "Tianlu" for space stations and ground stations around the weather to escort the lives and work of astronauts- "Obviously The use of the two sets of global relay systems will greatly improve the reliability and security of information transmission. " (Guangming Daily All -Media reporter Zhang Lei, Zhang Xiaohua correspondent Zhang Yin, Gao Lingfei, Wang Jiangyong))

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