Selective ultrawideband time-reversal music using a time-domain gating technique

An ultrawideband (UWB) imaging technique with time-reversal (TR) MUSIC has been studied for a remote sensing system because of the super-resolution characteristics. Particularly, TR-MUSIC imaging with the time-domain gating technique offers dramatical noise reduction as well as relaxation of the transceiver restriction. In this paper, we introduce selective UWB-TR-MUSIC imaging with the time-domain gating technique by utilizing partial frequencies. Instead of utilizing a single-frequency or all the available frequencies, we combine images from partial frequencies. The resulting pseudo-spectra yield distinctive features such as super resolution and statistical stability.