| Author(s): |
Michael A. Lombardi; Aaron P. Dahlen; |
| Title: |
A common-view disciplined oscillator |
| Published: |
May 24, 2010 |
| Abstract: |
This paper describes a common-view disciplined oscillator (CVDO) that locks to a reference time scale through the use of common-view Global Positioning System (GPS) satellite measurements. A Proportional-Integral-Derivative (PID) controller obtains near real-time common-view GPS measurements from the Internet and provides steering corrections to a local oscillator. A CVDO can be locked to any time scale that makes real-time common-view data available and can serve as a high accuracy, self-calibrating frequency and time standard. Measurement results are presented where a CVDO is locked to UTC(NIST), the coordinated universal time scale maintained at the National Institute of Standards and Technology (NIST) in Boulder, Colorado. |
| Citation: |
Review of Scientific Instruments |
| Volume: |
81 |
| Pages: |
6 pp. |
| Keywords: |
disciplined oscillator;GPS;Internet;time scale;time transfer |
| Research Areas: |
Physics, Time and Frequency |
| PDF version: |
 Click here to retrieve PDF version of paper (1MB) |
