Virtual radar antenna beamforming using orthogonal coding waveforms

In this paper, an innovative approach to form virtual radar antenna beams is proposed. These virtual beams are shown to be equivalent to those obtained with a traditional phased array of the same size in term of antenna gain and resolution. These beams are formed through digital filtering and using orthogonal coding waveforms. It is shown that using multiple beam forming filters, multiple virtual beams can simultaneously be formed, each having maximum gain and finest resolution.