Ultra-Wide Band (UWB) radar technology is used to detect targets and finds application in different fields such as military, industry, rescue missions, clinical medicine, etc. With its wide bandwidth and high spatial resolution, UWB radar can penetrate non-metallic objects, such as bricks, wood, dry walls, concrete and reinforced concrete. This paper presents the application of smart antenna technique and use of the Capon Beam forming Algorithm for imaging of the target through brick wall and in free space at a certain distance. Smart antennas replace mechanically rotated aperture antennas (synthetic aperture antenna) such that radar using a smart antenna can choose direction it wants to send the signal and receives the information instantaneously.