On a modified Duvall beamformer
B.K. Chang, N. Ahmed · 2003
The authors are concerned with the use of derivative null constraints in an adaptive beamformer in the spatial and frequency domains with respect to the Duvall beamformer to obtain a modified Duvall beamformer. Simulation results demonstrate that the modified beamformer's performance is improved under the following conditions:L jammer frequencies are the same as the desired signal; jammer directions are different from the desired signal; and jammer directions and frequencies are known.>