“…Ultra‐wideband (UWB) radar has several definitive advantages such as a high range resolution and sufficient penetration depth in the concrete wall. There are many studies that have investigated TWR imaging algorithms such as synthetic aperture radar [1], time‐reversal approaches [2], wave equation inversion [3] or compressed sensing‐based algorithms [4]. However, in the actual TWR scenario, the multipath scattering components among walls and targets should be considered, as this can produce ghost images, and there are some studies for suppression of ghost images [5, 6].…”