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Tianlian I (Simplified Chinese: 天链一号, Traditional Chinese: 天鏈一號, English: ''Sky Chain''), also known as Tian Lian 1, TL-1, and CTDRS-1 is a Chinese data tracking and relay communications satellite series. Based on the DFH-3 satellite bus, it will provide communication coverage for manned Shenzhou missions, from Shenzhou 7 onwards. Functionally, it is similar to the United States Tracking and Data Relay Satellite System. The first satellite Tianlian I-01 of the series was launched on the maiden flight of the Long March 3C carrier rocket, at 15:35 GMT on 25 April 2008, from LC-2 at the Xichang Satellite Launch Centre. Tianlian I-01 will be able to cover around half of the spacecraft's trajectory, compared to around 12 percent which had been covered using tracking stations and a fleet of ships. Tianlian I-02 was launched in July 2011 and Tianlian I-03 was launched on 25 July 2012. The satellite is in geostationary orbit. ==Tianlian-1 satellites== *Tianlian I-01 *Tianlian I-02 *Tianlian I-03 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tianlian I」の詳細全文を読む スポンサード リンク
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