Frequency Stability Analysis of Pulsar Aided Atomic Clocks
Po-Ting Chen and Jason L. Speyer, University of California Los Angeles; Walid A. Majid, Jet Propulsion Laboratory, California Institute of Technology
Location: Regency B
Date/Time: Tuesday, Jan. 30, 5:00 p.m.
This paper analyzes the frequency stability of pulsar-aided atomic clocks. Hadamard variance is used to analyzed the unfiltered and the filtered clock systems. The filtered clock system is constructed using a Kalman filter and accounts for the fractional power spectral density of the pulsar timing noise. Pulsar-aided compact atomic clocks do not have frequency drift induced by the random walk frequency noise as long as the pulsar timing model remains accurate. The result of the analysis shows that pulsars have the potential of enhancing the long-term stability of standalone compact atomic clocks, and the amount of improvement in steady state is dependent not only on pulsar’s frequency stability but also on that of the clock.