Interim Results from the Characterization Testing of the Engineering Development (EDM) Rubidium Clocks for Satellite Applications

摘要

This paper presents some interim results from the environmental testing program to evaluate the Engineering Design Model (EDM) of the EC&G Spaceborne Rubidium Clock. This effort is in support of the GPS Block IIR program and is intended to characterize the performance of EG&G design for BLOCK IIR satellite applications. Two EG&G EDM units are currently under test at NRL's Clock Test Facility to measure the long-term frequency stability, drift, and frequency versus temperature characteristics.