TY - JOUR
T1 - Mainlobe interference suppression based on eigen-projection processing and covariance matrix reconstruction
AU - Yang, Xiaopeng
AU - Zhang, Zongao
AU - Zeng, Tao
AU - Long, Teng
AU - Sarkar, Tapan K.
PY - 2014
Y1 - 2014
N2 - A mainlobe interference suppression method is proposed based on eigen-projection processing and covariance matrix reconstruction. In the proposed method, the eigen-projection matrix is calculated based on the eigenvector of mainlobe interference to suppress the mainlobe interference in received echo data. The interference covariance matrix is reconstructed after the eigenvalue of mainlobe interference is replaced by the average value of noise eigenvalues to eliminate the effect of mainlobe interference to adaptive weight vector. Finally, the output of adaptive beamforming is calculated by processed echo data and adaptive weight vector obtained based on reconstructed covariance matrix. Simulation results show that the proposed method can suppress the mainlobe interference effectively and achieve excellent performance.
AB - A mainlobe interference suppression method is proposed based on eigen-projection processing and covariance matrix reconstruction. In the proposed method, the eigen-projection matrix is calculated based on the eigenvector of mainlobe interference to suppress the mainlobe interference in received echo data. The interference covariance matrix is reconstructed after the eigenvalue of mainlobe interference is replaced by the average value of noise eigenvalues to eliminate the effect of mainlobe interference to adaptive weight vector. Finally, the output of adaptive beamforming is calculated by processed echo data and adaptive weight vector obtained based on reconstructed covariance matrix. Simulation results show that the proposed method can suppress the mainlobe interference effectively and achieve excellent performance.
KW - Adaptive beamforming
KW - covariance matrix reconstruction
KW - eigen-projection processing
KW - mainlobe interference
UR - http://www.scopus.com/inward/record.url?scp=84905269920&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2014.2339224
DO - 10.1109/LAWP.2014.2339224
M3 - Article
AN - SCOPUS:84905269920
SN - 1536-1225
VL - 13
SP - 1369
EP - 1372
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
M1 - 6860313
ER -