Localization for moving multi-target in urban environment is difficult because of the ambiguities of targets' different multipaths. This paper considers the targets localization problem via non-line-of-sight (NLOS) signals in an L-shaped corner environment using the time-division multiple-input-multiple-output (TD-MIMO) imaging radar. We first analyse the propagation characters of the multipath signals and establish the signal model of targets hiding behind corner for TD-MIMO. Then, a novel multi-target localization algorithm by exploiting the multipath ghosts after applying back-projection (BP) imaging algorithm is proposed. Finally, we evaluate and prove the validation the proposed algorithm via several simulation results.

MIMO radar imaging; multipath exploitation; NLOS signal; target localization; urban environment