免费人成视频在线,国产精品香港三级国产av,久久亚洲精品人成综合网,亚洲欧美中文字幕日韩一区二区 ,亚洲综合伊人久久大杳蕉

国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

^{<sub id="lj63f"></sub>}

CHINA> National

China to have global navigation system by 2015

(Xinhua)
Updated: 2009-01-19 17:40

BEIJING -- China plans to complete its independent global satellite navigation system by launching about 30 more orbiters before 2015, a space technology official said Sunday.

China plans to send 10 navigation satellites into the space in 2009 and 2010, said Zhang Xiaojin, director of astronautics department with China Aerospace Science and Technology Corporation (CASC) told China Central Television (CCTV).

The plan is to establish a global navigation system consisting of more than 30 satellites by the year of 2015. The system will shake off the dependence on foreign systems, Zhang said.

US's GPS has been widely used for commercial navigation in vehicles, cell phones and other civilian devices in China. Chinese civilian and military users could be guided by their own satellites worldwide after the Beidou becomes the world's fourth edition of global navigation systems.

China launched the first satellite, Beidou Navigation System, into geostationary orbit in October 2000, in an effort to build up its own positioning system independent from the US's Global Positioning System (GPS), E.U.'s Galileo Positioning System and Russia's Global Navigation Satellite System (GLONASS).

China has sent five positioning orbiters into the space. The current Beidou system only provides regional navigation service within China's territory.

Since Beidou's fifth orbiter launched in April 2007, China has started to upgrade the navigation system to the second generation, code named COMPASS.