Since April 1970, since China suc場他cessfully launched t黑女he first artificial earth答雜 satellite "Dongfanghong-1&q藍拿uot;, China's commu紅房nication satellite business has devel廠南oped for nearly 50 years.費視 According to the statistics of t訊去he Union of Concerned Scientists, as of小務 August 2020, there were 1鐵月,378 communication satellites 算個in orbit around the world, of which 街在the United States, t明歌he United Kingdom and Russia 跳火are the top three foreign communicat和師ion satellites. The number of Chines人山e communication satellite也開s is 52, which is far from員國 the United States.

In 2019, China launc哥得hed a total of 54 sat美現ellites, including 12 communication sa看愛tellites, accounting fo鐵花r 22.2%, and the proportio章好n has increased rapidly. With the co拍黃ntinuous maturity of the applicatio們匠n field of low-orbit broadband commun去著ication satellite syste哥讀ms, the improvement o也農f rocket launch capabil現子ities, and the reduction of cost近聽s, China's low-orb朋文it broadband communicati市章on satellite market space is expecte理雜d to develop rapidly.站睡

China's communication sate算行llite industry——definition and c體我lassification

A communication satell生對ite is a kind of artificial satellite和什 and is the space part of a satellite呢嗎 communication system. As a radio commu章火nication relay station, communicat區年ion satellites realize radio comm坐票unication between satellite com煙樂munication earth stat動筆ions or between earth花們 stations and spacecraft by for多鐵warding radio signals.

Communication satellites can transmit 工站information such as telephone,錯他 telegram, fax, data and televi秒弟sion. A geostationary communic樂玩ation satellite can cover about自如 40% of the earth's sur但知face, enabling any ground, sea, 學行and air communication stations in 月廠the coverage area to 門電communicate with each other at the 子懂same time. Three geostati近問onary orbit communication sa要錯tellites distributed at equal in錯路tervals over the equator ca頻窗n realize global communication ex街做cept for some areas of the poles.

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Development history of China's comm技師unication satellites

Since April 1970, since China 鄉影successfully launched the f信會irst artificial earth 票商satellite "Dongfanghong關那-1", China'相車s communication sate信店llite business has developed 畫爸for nearly 50 years. In the f舞很ield of communication sa長請tellite development, through the accumu微為lation of research and development exp影街erience of the four gene工頻rations of satellites 作北"Dongfanghong-2&quo門能t;, "Dongfanghong-車間3", "Dongfanghong-件拍4", and "Do個月ngfanghong-5", C笑街hina's communication satelli子兵te industry can currently d煙友evelop communication sate學信llites such as fixed s慢金atellites, relay satellites, and dir購請ect broadcast satellites. The 地雪spectrum of communication satellites 玩謝covers various frequency bands書討 such as S, C, Ku, an分森d Ka, and the satellite grades cover sm到呢all to super-large sate飛窗llites. China has be可光come one of the few countries喝懂 in the world that can independently 場事design and develop large-子人capacity communicati來道on satellites.

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China is far behind the US in the numb村相er of communications satellites

The launch activities in the 用間field of foreign communication sa數是tellites are in line with the over跳土all development capacity and in-o草花rbit scale of each country. The la對訊unch activities in the field of f中一oreign communication satel資司lites are in line with the overall d習說evelopment capabilities and in-orbit 中鄉scale of each country. Accordi場書ng to the statistics of the Uni為空on of Concerned Scie妹木ntists, as of August 風熱2020, there were 1,378 communi厭匠cation satellites in 藍長orbit around the world, of which 她關the United States, the United King時們dom and Russia are the top three fo快新reign communication satellites. 近得The number of Chinese commu公體nication satellites is相術 52, which is far from the United Stat影黃es. Japan, India, Cana花他da and other countries are next, 裡西with more than 20 communication sa分弟tellites.

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The proportion of China's co問小mmunication satellite launches is 頻公gradually increasing

In 2019, China launched a total of 5飛姐4 satellites, including 12 c森地ommunication satellites, account和鐘ing for 22.2%, and the時場 proportion has increased 要呢rapidly. Compared with the 了了United States, the proportion站歌 of the number of communi制服cation satellites in China場到 is far from that of the 又離United States, which shows that話錢 there is a huge untapped market s友她pace. With the conti家說nuous maturity of the applic紙對ation field of low-orbit快票 broadband communication satellite sys樹來tems, the improvement 地科of rocket launch capab報黃ilities, and the reduction of costs,嗎工 China's low-orbit broadband comm銀朋unication satellite market space is exp視靜ected to grow rapidly.

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The domestic low-orbit satellite 門裡communication plan i信睡s booming

Due to the high cost and 中鐘poor transmission speed of satellite co遠器mmunication in the past, co商科upled with my country'用現;s relatively developed ground communic去紅ation system construction, my coun唱理try's satellite communicat校輛ion market, especially the civilian s器火atellite communication 好知market, is small in scale and low i如光n penetration. According to Chi北亮na Telecom statistics, by the end 地車of 2019, there were only about 30都朋0,000 users in China's那黑 satellite communication market. How會舞ever, with the construction 那一of national key projects, policy guida哥開nce and the reduction of cons姐音truction costs, Chinese en商來terprises have also active國術ly launched a number of com離爸munication satellite constellation pl黑一ans.

In December 2018, my cou慢工ntry launched the low又銀-orbit broadband satell黃兒ite communication sy和女stem "Hongyun" project an問錯d the first satellite of the "H空一ongyan" constell睡器ation respectively, marking那書 a zero breakthrough in th遠友e construction of my country's low-錯喝orbit broadband satellite communication不又 system . In April 2020, satellite 我快Internet was officially黑妹 included in the national 能請strategy for new infrastructur視東e construction, which injected a boos爸遠ter for the development of co黑身mmunication satellites.

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