| Author(s): |
Thomas P. Heavner; Stephan E. Barlow; Marc A. Weiss; Neil Ashby; Steven R. Jefferts; |
| Title: |
A Laser-Cooled Frequency Standard for GPS |
| Published: |
September 20, 2011 |
| Abstract: |
NIST is in an initial phase of developing a prototype laser-cooled atomic frequency standard (AFS) for potential use in a future GPS system. The expected fractional frequency stability or Allan deviation, ςy(τ), will be 2x10-13 at one second, improving as the square-root of the averaging time to 7x10-16 at one day. This corresponds to an expected time dispersion of 0.060 ns at one day, or 0.02 m of user range error (URE). We discuss design and development process underway at NIST, as well as capabilities enabled by this AFS in GPS. |
| Conference: |
ION GNSS 2011 |
| Proceedings: |
Proceedings of the ION GNSS 2011 Conference |
| Pages: |
pp. 1 - 4 |
| Location: |
Portland, OR |
| Dates: |
September 20-23, 2011 |
| Keywords: |
Atomic clock;Cesium;GPS;Laser Cooling; |
| Research Areas: |
Physics |
