Method of calibrating a network of magnetometers
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsFranck Vial, Saifeddine Aloui
Life of this patent
Estimating the term…
Abstract
A method of calibrating a network of magnetometers (C1, Ci) including the displacement of a magnet holder tool (10) above the network, and solving an optimisation problem to determine a localisation of the magnetometers in the network. This localisation minimises based on an optimisation criterion, the difference between a real attribute (D, m1, m2) of the magnet holder tool and an estimate of the attribute determined without knowledge of the displacement, starting from the localisation and measurements made by the magnetometers in the network during the displacement.
Claims14
A method for calibrating a network of magnetometers, comprising the steps of:
- acquiring measurements made by the magnetometers of the network of magnetometers when a tool carrying at least two magnetic field sources is displaced over the network of magnetometers;
- considering a possible localisation of the magnetometers in the network of magnetometers, reconstructing a path followed by the at least two magnetic field sources during displacement of the tool over the network of magnetometers, using the acquired measurements;
- calculating an estimate of a tool attribute from the reconstructed path;
- comparing the tool attribute and the calculated estimate of said attribute;
- and
- determining a localisation of the magnetometers in the network of magnetometers using the result of the comparing step.
Dependencies are inferred from the claim text.