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wei xing ding wei xi tong zai ying ji jiu yuan zhong de ying yong
Author(s): 
Pages: 22-23
Year: Issue:  3
Journal: China Emergency Rescue

Abstract: 第一颗地球人造卫星1957年顺利升空,卫星定位系统从最初的子午卫星导航系统到后来的CICADA卫星导航系统,再到今天的GPS卫星全球定位系统,以及计划将于2008年投入使用的伽利略卫星导航系统,人类对卫星导航定位的研究经历了整整五十个年头。五十年来,卫星导航定位系统不断改进,软、硬件得到了进一步的完善,卫星定位系统具有的定位、定时、通
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