Direction angle estimation of moving targets by applying MUSIC to the outputs of quadrature mirror Doppler filter bank

In radar signal processing, it is important to separate multiple targets that are covered in same radar antenna beam and in same range bin. It is also important to measure the position of each target. This paper proposes a new angular measurement system by applying MUSIC (multiple signal classification) to the outputs of Doppler filter bank consisting quadrature mirror filters. Some numerical experiments show that the proposed method can estimate the angles of moving targets at high speed, even for coherent targets and under low signal-to-noise ratios.