SYSTEM AND METHOD FOR HEADING ERROR CORRECTION IN A PULSED RB-87 MAGNETOMETER AT GEOMAGNETIC FIELDS
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United States of America Patent
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Issued Date -
Jul 14, 2022
app pub date -
May 28, 2021
filing date -
May 29, 2020
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Abstract
According to various embodiments, a method for reducing heading error in a magnetometer that uses Rb-87 atoms is disclosed. The method includes varying a direction and magnitude of a magnetic field at different spin polarization regimes. According to various embodiments, a magnetometer adapted for reduced heading error is disclosed. The magnetometer includes a multipass cell containing Rb-87 vapor, a pump laser operated in a pulse mode that is synchronous with a Larmor frequency, and two orthogonal probe lasers configured to rotate to vary a direction and magnitude of a magnetic field at different spin polarization regimes.
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