ION Technical Content
USNO GPS Program
| Abstract: | The U.S. Naval Observatory (USNO) has historically been and continues to be at the forefront in the development of new concepts, techniques and equipment for the generation and dissemination of Precise Time and Time Interval (PTTI). With the advent of the Global Positioning System (GPS) and its predicted capability of time transfers on a worldwide basis to a precision of ten nanoseconds or better, the USNO secured funding to develop a GPS Time Transfer Unit (GPS/ TTU) and is currently engaged in a program to validate and disseminate PTTI data from GPS. Initial test results indicated that the GPS/TTU performed well within the 100 nanosecond range required by the orig inal system specification. Subsequent testing involved the verification of GPS time at the Master Control Site (MCS) via portable clocks and the acquisition and tracking of as many passes of the space vehicles currently in operation as possible. A description and discussion of the testing, system modifications, test results obtained, and an evaluation of both GPS and the GPS/TTU are presented. Finally, the content of USNO GPS reports is discussed and current work and future program plans outlined. |
| Published in: |
Proceedings of the 12th Annual Precise Time and Time Interval Systems and Applications Meeting December 2 - 4, 1980 Goddard Space Flight Center Greenbelt, Maryland |
| Pages: | 387 - 415 |
| Cite this article: | Putkovich, Kenneth, "USNO GPS Program," Proceedings of the 12th Annual Precise Time and Time Interval Systems and Applications Meeting, Greenbelt, Maryland, December 1980, pp. 387-415. |
| Full Paper: |
ION Members/Non-Members: 1 Download Credit
Sign In |
Advancing positioning, navigation and timing (PNT)
© 1995-2024, The Institute of Navigation, Inc. Privacy Policy and Terms of Service