Proton precession magnetometers or proton magnetometers use nuclear magnetic resonance ... Directional changes cause a shift in the oscillator frequency, enabling the magnetometer to provide ...

A DC current is provided to set the oscillator into its linear region. Directional change causes a shift in the oscillator frequency, enabling the magnetometer to provide directional and navigational ...

The authors give full treatment to changes in this field, which include improved techniques for calculating gravity fields, the use of proton-precession and optically-pumped magnetometers, improved ...

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