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NUCLEAR MAGNETIC RESONANCE RATE GYRO PERFORMANCE
MOTOROLA INC RIVERSIDE CALIF
The effect of inertial rotation in nuclear mag netic resonance is described, and several schemes for rate gyro operation are given. A generalized expression is obtained for the directional drift of a rate or an integrating rate nuclear magnetic resonance nmr gyro due to resonance sensing error. An unavoidable source of such error is the inherent magnetic noise in a nuclear spin system, and the resulting gyro directional drift for a steady state Bloch spin system is expressed in terms of adjustable parameters temperature, field strengths, relaxation times, etc.. For conventional laboratory parameter values, the rms one-hour drift due to spin system magnetic noise is about one degree. A cursory discussion of a rapid adiabatic passage gyro is included. Author