3.4.1美国广域增强系统(WAAS)3.4.1.1系统组成广域增强系统(Wide Area Augmentation System,WAAS)是美国联邦航空管理局(Frderal avaiation administration,FAA)主导的星基增强系统(Satellite Based Augmentation Svstem,SBAS),为满足...
The maritime navigation accuracy requirements for radionavigation systems such as GPS are specified by the International Maritime Organization (IMO). Maritime navigation usually consists of three major phases identifi...