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A Helium (He4) Optically Pumped Magnetometer Suitable for Airborne Measurements

By
Wang Qinge
Wang Qinge
*
Aero Geophysical Survey, Ministry of Geology and Mineral Resources, Beijing.
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Published:
January 01, 1989

Abstract

The principle of automatic tracking of a helium (He4) optically pumped magnetometer is described, with the frequency spectra of aeromagnetic anomalies analyzed and a bandwidth necessary for an airborne magnetometer proposed. Based on the bandwidth, the transfer function for the magnetometer is suggested as.

To the variations of a magnetic field, the tracking error can be estimated from the transfer function.

To make the tracking error less than the width of magnetic resonance, an additional high-speed tracking loop is suggested, which resulted in improvements in filtering for a gently varying magnetic field and high sensitivity. Because of the auxiliary loop, the tracking function to a fast varying magnetic field was improved resulting in improved measurements.

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Contents

Society of Exploration Geophysicists Geophysical References Series

An Overview of Exploration Geophysics in China — 1988

Zhao Jingxiang
Zhao Jingxiang
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Wang Yanjun
Wang Yanjun
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Fu Xuexin
Fu Xuexin
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Stanley H. Ward
Stanley H. Ward
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Society of Exploration Geophysicists
Volume
3
ISBN electronic:
9781560802662
Publication date:
January 01, 1989

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