經安全檢測,此網站為安全網站,請放心前往原始網址!

GLOBAL POSITIONING SYSTEM - Bureau of Reclamation Homepage

GLOBAL POSITIONING SYSTEM System Description The Navigation Satellite Time and Ranging (NAVSTAR) Global Positioning System (GPS) is a space-based satellite radio navigation system developed by the U. S. Depart-ment of Defense (DoD). GPS ...

www.usbr.gov

網址安全性掃描由 google 提供