Title :
A linearly constrained beamforming robust to array imperfections
Author :
Youn, Won Sik ; Un, Chong Kwan
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
3/1/1993 12:00:00 AM
Abstract :
It has been shown that in the presence of array imperfections, the linearly constrained beamformer cancels the desired signal and the Duvall beamformer fails to null out interference. It is shown here that the problem of cancelling the desired signal can be remedied if the beamforming is done after effectively subtracting the desired signal component from the received signals. With the forward/backward array, covariance difference method, the proposed beamformer nulls out interference without canceling the desired signal
Keywords :
antenna phased arrays; array signal processing; interference suppression; Duvall beamformer; covariance difference method; forward/backward array; interference; linearly constrained beamforming; received signals; signal component; Array signal processing; Clutter; Electromagnetic propagation; Frequency estimation; Interference cancellation; Interference constraints; Oceans; Radar remote sensing; Radar tracking; Robustness;
Journal_Title :
Signal Processing, IEEE Transactions on
