Time and Frequency Activities at the NASA Jet Propulsion Laboratory

R. L. Tjoelker

Abstract:	The Jet Propulsion Laboratory, NASA’s lead center for frequency and timing, develops and implements state-of-the-art atomic frequency standards, clocks, dielectric resonators, stabilized photonic links, and low-noise test and measurement capabilities in support of demanding applications for spaceflight and the NASA Deep Space Network (DSN). When implemented into the DSN Frequency and Timing Subsystem (FTS), these technologies provide precise and stable phase, frequency, and time references for NASA’s deep space communication, tracking, navigation, and radio science activities. A brief overview of JPL time and frequency research, development, implementation, and operation activities is presented with a focus on recent frequency and timing advances in the NASA DSN and the JPL Frequency Standards Test Laboratory (FSTL).
Published in:	Proceedings of the 39th Annual Precise Time and Time Interval Meeting November 27 - 29, 2007 Hyatt Regency Long Beach Long Beach, California
Pages:	149 - 164
Cite this article:	Tjoelker, R. L., "Time and Frequency Activities at the NASA Jet Propulsion Laboratory," Proceedings of the 39th Annual Precise Time and Time Interval Meeting, Long Beach, California, November 2007, pp. 149-164.
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