Through-the-Wall Target Localization with Time Reversal MUSIC Method

Time Reversal Multiple Signal Classiflcation (TR-MUSIC) method is studied and adapted for the detection and localization of multiple targets behind the wall in this paper. TR-MUSIC does not involve the FDTD solver for the implementation of the backpropagation of the time reversed fleld and is very computational e-cient. The Green's function vectors for the computation of the TR-MUSIC pseudo-spectrum is e-ciently evaluated with the saddle point method for a homogeneous wall. By employing the null space of the multistatic response matrix, simultaneous localization of multiple targets behind the wall can be achieved by TR-MUSIC method. Numerical results are presented to show the efiectiveness of through- the-wall imaging (TWI) with TR-MUSIC method.

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