System and method using hybrid magnetic field model for imaging magnetic field sources

摘要

A system and method for detecting a magnetic field generated by a magnetic field source located in a circuit. A magnetometer array generates data regarding an activity of the source. A computing device executes a magnetic beamforming data processing program including a hybrid model which receives data generated by the array and detects the magnetic field generated by the source. The hybrid model is based on a weighted sum of contributions to the magnetic field, which include a first modelled magnetic field contribution generated by a current dipole aligned with an axis of the source, and a second modelled magnetic field contribution generated by a loop current flowing around the axis. Weighting factors are applied to the modelled fields, and then the weighted modelled fields are summed to produce the hybrid model. The weighting factors can be adjusted to emphasize the contribution of one modelled field over the other.