Method for ascertaining the change in a spatial orientation of an NMR gyroscope and an NMR gyroscope

US11402210B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Robert Roelver · Calw, DE
• Andreas Brenneis · Renningen, DE
• Felix Michael Stuerner · Illerkirchberg, DE
• Janine Riedrich-Moeller · Warmbronn, DE
• Tino Fuchs · Rötteln, DE

Key dates

• Filing date: Dec 3, 2020
• Grant date: Aug 2, 2022
• Expiry date: Jan 11, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/46
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for ascertaining a change in a spatial orientation of a nuclear magnetic resonance (NMR) gyroscope having a diamond doped with color centers includes applying a static external magnetic field in a first direction, polarizing a nuclear spin of the color centers of the diamond in a direction of the static magnetic field, and generating a cophasal Larmor precession of the nuclear spin of the color centers of the diamond through application of an alternating magnetic field in a second direction perpendicular to the first direction, whose frequency corresponds to the Larmor frequency of the nuclear spin of the color centers. The method further includes measuring a phase of the Larmor precession, and ascertaining a change in the spatial orientation in a plane perpendicular to the first direction based on a deviation of the precession frequency from an expected value.