A cooperative inversion of airborne transient electromagnetic and magnetic methods based on grid mapping

Imposing structural constraints between grids of variable sizes is problematic because different geophysical techniques employ different grid divisions. We propose a new collaborative inversion approach and utilize it to invert the proposed 2-D ATEM and 2-D Magnetic Methods with Induced Polarization (IP) effects, which overcomes the problem of imposing cross-gradient constraints at different grid sizes. The grid mapping technique is included into the iterative collaborative inversion process by the inversion strategy. The combined data inversion results show that the technique may successfully leverage data complements to improve the accuracy of the medium boundary description results. The concept is suitable to collaborative inversion of geophysical methods with arbitrary grid divisions and successfully solves the problem of mismatched grid divisions in collaborative inversion.