Title:

Development of a Fluxgate Magnetometer Model

As a part of the UNH SWFO-L1 mission to monitor space weather and the sun’s behavior, the fluxgate magnetometer is an important component to measure external magnetic fields. The basic principle of a fluxgate magnetometer is to detect changes in the ambient magnetic field by inducing a magnetic field in a ferromagnetic material via a drive winding. Each magnetometer is unique due to the ferromagnetic properties of the core material which can be seen in the relationship between the magnetic field strength (B) and the induced magnetic field (H), called the hysteresis loop. This is the reason why it is necessary to compare the output of the magnetometer to a modelled, expected output via simulation. In our research we are creating a custom model to simulate our ring core magnetometer’s output and comparing it to measurements in the lab from the SWFO-L1 magnetometer to create a performance model for future missions.

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