System and method for signals transmission in complex scattering environments using interaction of the waves with a nonlinear object

A system for signal transmission in wave propagating environments, comprising:

• a waves propagating environment of interest,
• a receiving port in said waves propagating environment of interest,
• at least one non-linear object exposed to said waves in said waves propagating environment of interest and producing intermodulation product or harmonic signals originating thereat and propagating to said receiving port,
• a linear source of waves,
• a signal detector coupled to said receiving port and configured to detect a full sona signal including at least one non-linear sona corresponding to said intermodulation product and/or harmonic signals and a linear sona corresponding to said waves reverberating in said waves propagating environment of interest,
• a first bandpass filter centered at frequencies of said intermodulation product or harmonic signals, and applied to said full sona to extract at least one nonlinear sona therefrom,
• a second bandpass filter centered at frequencies of said waves and applied to said full sona to extract a linear sona therefrom,
• a time-reversing unit coupled to said receiving port and configured to apply time-reversion routine to said at least one nonlinear sona, and
• a transmitter coupled to said receiving port and said time-reversing unit and configured to transmit said time-reversed at least one nonlinear sona into said waves propagation environment of interest, wherein said transmitted time-reversed at least one nonlinear sona propagates towards a location of said at least one nonlinear object and reconstructs exclusively thereat, thus attaining an exclusive communication channel extending between said at least one nonlinear object and said receiving port,
• wherein said linear sona is time-reversed in said time-reversing unit, and transmitted by said transmitter into said waves propagating environment, and wherein said time-reversed linear sona reconstruct exclusively at a location of said linear source of waves.