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A "space experiment" examining the response of a geosynchronous quartz crystal oscillator to various levels of solar activity

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3 Author(s)
LaLumondiere, S.D. ; Electron. & Photonics Lab., Aerosp. Corp., Los Angeles, CA, USA ; Moss, S.C. ; Camparo, J.C.

Viewing the frequency history of the high-quality quartz crystal oscillator onboard Milstar FLT-1 as a "space experiment," we have examined the response of the crystal to various solar flares that have occurred over the past 4 years. Our results show that, even for the largest solar flares that can be expected, timekeeping onboard a geosynchronous communications satellite need not be unduly perturbed by the enhanced space-radiation environment of a solar flare, so long as the ground station can take mitigating action within a few hours of the flare's onset.

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:50 ,  Issue: 3 )