Title: Hai lu kong tian xian shen wei
Description: Guan xing ji shu shou xian ying yong yu jun shi yu hang kong, hang tian gong cheng, xian jin ye shen ru she hui sheng huo de ge ge ling yu. zuo zhe yi guang bo de zhi shi he shen hou de xue shu shui zhun, yi tong su de yu yan he feng fu de tu shi, jie shao le guan xing ji shu de fa zhan li cheng ; ji chu ji shu nei rong yi ji qi zai hai, lu, kong ge ling yu de guang fan ying yong, shi li feng fu sheng dong, shi yi ben rong zhi shi xing, ke du xing wei yi ti de ke pu du wu.
Subjects: Global Positioning System, Inertial navigation systems, Pu ji du wu, Guan xing dao hang, Guan xing zhi dao