Method for determining electromagnetic properties of a non-uniform medium by means of a radio-frequency detection system

A computer-implemented method for determining electromagnetic properties of a medium, comprising steps of:

• determining, by means of a radio-frequency detection system comprising at least one transmitter and one receiver, for each pair associating one receiver and one transmitter, a measurement of a frequency transfer function of a transmission channel characterizing said medium,
• determining, for each of said pairs, a model of said frequency transfer function dependent on at least one positional variable and on at least one variable characterizing an electromagnetic property of the medium,
• determining, for each of said pairs, a correlation coefficient between the measurement of the frequency transfer function and the model,
• determining a global estimation function estimating the correlation coefficient between the transfer function measurements and the models, for all pairs,
• searching for at least one local maximum of the estimation function in the domain defined by the at least one positional variable and the at least one variable characterizing an electromagnetic property of the medium,
• deducing therefrom at least one value of the variable characterizing the electromagnetic property of the medium as the one that makes it possible to obtain said local maximum.