Title :
Modified spatial smoothing for coherent jammer suppression without signal cancellation
Author :
Pei, Soo-Chang ; Yeh, Chien-chung ; Chiu, Sun-Chien
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
3/1/1988 12:00:00 AM
Abstract :
An adaptive array processor is presented for suppressing coherent jammers. It performs spatial smoothing, after removing the desired signal, to adapt a weight vector, which is then copied to a slave beamformer to eliminate jammers. This processor can avoid signal cancellation occurring in performing spatial smoothing with the desired signal present. Nulls generated by the processor in directions of coherent jammers are much deeper than those generated by performing spatial smoothing with the desired signal present
Keywords :
antenna phased arrays; antenna theory; interference suppression; jamming; adaptive array processor; antennas; coherent jammer suppression; modified spatial smoothing; nulls; slave beamformer; Absorption; Acoustic noise; Delay; Finite impulse response filter; Jamming; Microphones; Noise cancellation; Signal processing; Smoothing methods; Speech processing;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
