Ⅰ.引言自从1957年10月4日苏联发射第一颗人造卫星以来,世界上在科学技术领域内发生了许多事件,十多年后的今天,科学技术已经跃进到能利用卫星进行全球通信,气象监视,空中侦察,天体观测,火星摄影、以及人类对月球的探索等等.在发展空间技术领域中.世界各国对导航卫星的发展也越来越重视了.美帝出了向外扩张侵略和苏修竞争海上霸权的需要,1955年在弹道异弹北极星核潜艇的规划中提出研制卫星导航的问题。1957 I. INTRODUCTION Since the Soviet Union launched the first satellite on October 4, 1957, many events have taken place in the field of science and technology. More than a decade later, science and technology have leaped into enabling the use of satellites for global communications. Meteorological surveillance, aerial reconnaissance, celestial observation, photography of Mars, exploration of the moon by mankind, etc. In the field of space technology development, more and more countries in the world have paid attention to the development of navigation satellites. And Su Xiu’s need to compete for maritime hegemony. In 1955, he proposed the issue of developing satellite navigation in the planning of the ballistic missile North Pole nuclear submarine. 1957