M. Zhang et al., IMPROVING RESOLUTION FOR ARRAY-PROCESSING BY NEW ARRAY GEOMETRY AND SPATIAL FILTER, IEEE transactions on signal processing, 42(3), 1994, pp. 680-683
A new array processing method based on a new array geometry and a spat
ial filter to improve the resolution is presented. The array aperture
can be increased by the new array geometry. The spatial frequency alia
sing can be removed and the effective signal-to-noise (SNR) can be rai
sed by the spatial filter. Simulation results are presented to illustr
ate that the performance obtained by the new method is much better tha
n that obtained by the existing methods.