Network of magnetometers operating in zero field and associated method for calibrating intermagnetometer couplings

摘要

The invention relates to a method for determining a coupling between magnetometers of an array of N magnetometers, for example with optical pumping, where each magnetometer comprises a field cancellation system capable of being activated to operate the magnetometer in zero field. This method comprises a first phase (P1) during which the N magnetometers are separated into N-1 magnetometers whose field cancellation system is deactivated and a measuring magnetometer whose field cancellation system is activated. This first phase comprises: - the generation (GENj) by the magnetometers of a plurality of reference magnetic fields of known amplitudes and of distinct directions, - the measurement (MESi), by the measuring magnetometer, of the ambient magnetic field on a plurality of measurement axes; the determination (CALCij) of coupling coefficients between the measurement magnetometer and each of the N magnetometers from said measurement and from said known amplitudes. Figure for the abstract: Figure 2