SimPEG.EM uses SimPEG as the framework for the forward and inverse electromagnetics geophysical problems.

To solve for predicted data, we follow the framework shown below. The model is what we invert for. This is mapped to a physical property on the simulation mesh. A source which is used to excite the system is specified. Having a model and a source, we can solve Maxwell’s equations for fields. We sample these fields with recievers to give us predicted data.