Since April 1970, since筆道 China successfully launched the快白 first artificial earth satellit明冷e "Dongfanghong-1"唱匠, China's communicat要上ion satellite business has devel唱年oped for nearly 50 ye高個ars. According to the 子開statistics of the Union of Concerned 地化Scientists, as of August 姐筆2020, there were 1,378 communic裡麗ation satellites in orbi低科t around the world, of which the United亮報 States, the United Kingdom and R東匠ussia are the top three foreig農紅n communication satelli們日tes. The number of Chines事西e communication satel要討lites is 52, which is far from the Unit門爸ed States.

In 2019, China launched a total of 5小還4 satellites, including 12 c得外ommunication satellites, 劇我accounting for 22.2%, and the propor電門tion has increased rapidly.員日 With the continuous 資師maturity of the application fiel話輛d of low-orbit broadba筆草nd communication satellite systems, the學懂 improvement of rocket launch c我放apabilities, and the r訊兵eduction of costs, China's low-o白就rbit broadband communication satellite 下拿market space is expect還家ed to develop rapidly.

China's communication s購要atellite industry——definiti熱計on and classification

A communication satellite is a 知那kind of artificial satelli日知te and is the space part o筆好f a satellite communicati器鐵on system. As a radio comm話刀unication relay stati村機on, communication satellites 什西realize radio communication between sat子土ellite communication earth藍文 stations or between earth s飛視tations and spacecraft by forwarding ra道匠dio signals.

Communication satellites報為 can transmit information such as tel這白ephone, telegram, fax, data and t業爸elevision. A geostationary 間數communication satellite can cov什如er about 40% of the earth's surfa了日ce, enabling any ground, sea的站, and air communication statio內但ns in the coverage area to c師慢ommunicate with each other妹來 at the same time. Three geostat微得ionary orbit communica爸做tion satellites distributed at equal i道遠ntervals over the equator can 錢坐realize global communication except玩事 for some areas of the poles.那熱

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Development history of China's 快用communication satellites讀懂

Since April 1970, since Chin綠學a successfully launched線長 the first artificial earth satellit做遠e "Dongfanghong-1", Chi家會na's communication 暗機satellite business has 照唱developed for nearly 街關50 years. In the field of communic但很ation satellite developm空飛ent, through the accumulati學明on of research and d人家evelopment experience of the four gen弟黑erations of satellite計章s "Dongfanghong-2", &q門見uot;Dongfanghong-3", "Dongf白綠anghong-4", and "Dongfan器員ghong-5", China's communicatio車動n satellite industry can c舞我urrently develop communicatio為議n satellites such as微劇 fixed satellites, relay satellites,行靜 and direct broadcast satellit公就es. The spectrum of communication sate空也llites covers various f音器requency bands such as S, C, Ku,能草 and Ka, and the satellite grad樂村es cover small to super-lar明物ge satellites. China has become one o睡動f the few countries in the world that小校 can independently d作通esign and develop large-capaci放雨ty communication satell近理ites.

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China is far behind the 議笑US in the number of commu懂藍nications satellites

The launch activities in th了視e field of foreign communication s理快atellites are in line with the 家為overall development c個美apacity and in-orbit scale 有上of each country. The launch activiti業暗es in the field of foreign c山文ommunication satellit章東es are in line with the ove師事rall development capa大對bilities and in-orbit scale of海線 each country. According to the st雪綠atistics of the Union of Concerne腦見d Scientists, as of Au到頻gust 2020, there were 1,378 communic為山ation satellites in orbit around the還黃 world, of which the Unit舞區ed States, the Unite睡購d Kingdom and Russia are the top t視火hree foreign communication satellit用章es. The number of Chinese communicati玩科on satellites is 52, which is far視理 from the United Sta校畫tes. Japan, India, Canada and other 煙湖countries are next, with mo路喝re than 20 communication satellites志雜.

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The proportion of Chin火間a's communication satellite 子公launches is graduall吃西y increasing

In 2019, China launched a tot請他al of 54 satellites, i輛算ncluding 12 communication sate金下llites, accounting for 22.2%, and th線文e proportion has increased r票舊apidly. Compared with the United 鄉如States, the proportion 化近of the number of communicatio看紅n satellites in China is far fr男農om that of the United States, which sho電家ws that there is a huge u學紅ntapped market space美路. With the continuou體筆s maturity of the application f唱森ield of low-orbit broadband communic章湖ation satellite systems, the improve笑兒ment of rocket launch 內術capabilities, and the reduction 票吃of costs, China's low-orbit b文購roadband communication s時些atellite market space我習 is expected to grow rapidly.

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The domestic low-orbit satellit就輛e communication plan is booming

Due to the high cost and poor關但 transmission speed of sate影信llite communication in the冷土 past, coupled with my count路章ry's relatively developed校個 ground communication system con這水struction, my country's satellite 明間communication market, especi麗很ally the civilian satellite communic去土ation market, is small in scale and慢討 low in penetration. Acco個影rding to China Telecom statistics, by吧術 the end of 2019, there were only a商時bout 300,000 users in Chin高山a's satellite communication mar少筆ket. However, with the construct道車ion of national key projects, policy g行冷uidance and the reduction of co南費nstruction costs, Chinese e制民nterprises have also acti鐵但vely launched a number of communi匠答cation satellite constellation plans.匠花

In December 2018, my country l間計aunched the low-orbit broadband satel匠去lite communication system "Hongyu草小n" project and the first 亮數satellite of the "Hong腦從yan" constellation respecti日玩vely, marking a zero brea西影kthrough in the construct相錢ion of my country's low-orbit b跳我roadband satellite communicatio弟藍n system . In April 2020, satellite人公 Internet was officiall腦件y included in the national strategy fo湖熱r new infrastructure con上嗎struction, which injected a booster for資坐 the development of communi機明cation satellites.

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