A common-view disciplined oscillator

Published

May 24, 2010

Author(s)

Michael A. Lombardi, Aaron P. Dahlen

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

Pub Type

Journals

Download Paper

Local Download

Keywords

disciplined oscillator, GPS, Internet, time scale, time transfer

Citation

Lombardi, M. and Dahlen, A. (2010), A common-view disciplined oscillator, Review of Scientific Instruments, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904996 (Accessed October 27, 2025)