Patent ID: 11965943
Assignee: RAYTHEON COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A magnetometer, comprising:
a single total-field optically pumped magnetometer (OPM), said OPM having a detection zone along a detection axis and a dead zone orthogonal to the detection axis, a boundary separating the detection and dead zones defined by an angle theta θ1 from a Z-axis in an XYZ coordinate space; and
a first electromagnetic (EM) coil positioned proximate the OPM and oriented such that when energized the first EM coil produces a first bias magnetic field Bbias,1 that is substantially parallel to the detection axis in a local volume around the OPM to move an observable field Bmeas from the dead zone into the detection zone,
wherein Bbias,1 is updated at a rate sufficient to maintain Bmeas in the detection zone while not interfering with operation of the OPM.