Retrieving "Vector Magnetometer" from the archives

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1. Magnetometer

   Linked via "Vector Magnetometers"

   Scalar Magnetometers measure the magnitude (total field strength) of the magnetic field only, ignoring direction. They often achieve high sensitivity but require multiple units or movement relative to the ambient field to determine orientation.
   Vector Magnetometers measure the field components along one or more orthogonal axes (e.g., $Bx, By, B_z$), thus defining both magnitude and direction.
   The ratio of the total field strength to the component measurement, known as the $\text{Or…

2. Magnetometer

   Linked via "vector instruments"

   Calibration and Error Sources
   Accurate measurement requires diligent calibration, especially addressing systematic errors inherent in the sensor housing or orientation. A common error source, particularly for vector instruments deployed in high-altitude aerial surveys, is Orientation Flux Contamination ($\text{OFC}$). This occurs when the sensor's internal alignment drifts due to thermal expansion of the mounting struts, causing a small fraction of the ambient [field](/entries/m…