Title :
Long-term performance of precision crystal oscillators in a near-Earth orbital environment
Author :
Rueger, Lauren J. ; Norton, Jerry R. ; Lasewicz, Paul T.
Author_Institution :
Bendix Field Eng., Corp., Columbia, MD, USA
Abstract :
The Navy Navigation Satellite System (NNSS) uses precision quartz-crystal oscillators to provide time and frequency in the orbiting spacecraft. The frequency changes for multiple oscillators during many years of operational service in the orbital environment are discussed. The primary frequency changes are believed to be caused by mass transfer to and from the resonator, stress relief in the resonator mounting structure and electrodes, and ionizing radiation of the quartz resonator
Keywords :
crystal resonators; frequency stability; radiation effects; radiofrequency oscillators; radionavigation; satellite relay systems; Navy Navigation Satellite System; SiO2; electrodes; frequency changes; frequency drift; ionizing radiation; long-term performance; mass transfer; mounting structure; multiple oscillators; near-Earth orbital environment; precision crystal oscillators; quartz-crystal oscillators; stress relief; Earth; Extraterrestrial measurements; Frequency measurement; Ionizing radiation; Oscillators; Power systems; Radio frequency; Satellite navigation systems; Space vehicles; Stability;
Conference_Titel :
Frequency Control Symposium, 1992. 46th., Proceedings of the 1992 IEEE
Conference_Location :
Hershey, PA
Print_ISBN :
0-7803-0476-4
DOI :
10.1109/FREQ.1992.269979
