TY - GEN
T1 - Spatial multi-interference suppression based on joint adaptive weight for distributed array radar
AU - Li, Shuai
AU - Zhang, Honggang
AU - Yang, Xiaopeng
AU - Sun, Yuze
AU - Liu, Quanhua
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - Distributed array radar is widely applied to suppress the mainlobe interference due to the large equivalent aperture with auxiliary array. In general, the distributed array radar only can suppress a certain number of interferences because of limited auxiliary unit radars. When there exist multi interferences, especially massive sidelobe interferences, the performance of the mainlobe interference suppression degrades severely. To solve this problem, the auxiliary unit radars adopt phased array system and a spatial multi-interference suppression method based on joint adaptive weight for distributed array radar is proposed in this paper. In proposed method, the interference-plus-noise covariance matrix of each radar is firstly reconstructed based on Capon spectral estimator to remove the mainlobe interference. Subsequently, the internal adaptive weight is calculated based on the reconstructed matrix to suppress sidelobe interferences. Then, the external adaptive weight is calculated based on the data processed by internal adaptive weight to suppress the mainlobe interference. Finally, the joint adaptive weight is calculated based on the internal weight and the external weight, and the output of adaptive beamforming is obtained. The effectiveness of the proposed method is verified by numerical simulations.
AB - Distributed array radar is widely applied to suppress the mainlobe interference due to the large equivalent aperture with auxiliary array. In general, the distributed array radar only can suppress a certain number of interferences because of limited auxiliary unit radars. When there exist multi interferences, especially massive sidelobe interferences, the performance of the mainlobe interference suppression degrades severely. To solve this problem, the auxiliary unit radars adopt phased array system and a spatial multi-interference suppression method based on joint adaptive weight for distributed array radar is proposed in this paper. In proposed method, the interference-plus-noise covariance matrix of each radar is firstly reconstructed based on Capon spectral estimator to remove the mainlobe interference. Subsequently, the internal adaptive weight is calculated based on the reconstructed matrix to suppress sidelobe interferences. Then, the external adaptive weight is calculated based on the data processed by internal adaptive weight to suppress the mainlobe interference. Finally, the joint adaptive weight is calculated based on the internal weight and the external weight, and the output of adaptive beamforming is obtained. The effectiveness of the proposed method is verified by numerical simulations.
KW - Adaptive beamforming
KW - Distributed array radar
KW - Joint adaptive weight
KW - Multi-interference suppression
UR - http://www.scopus.com/inward/record.url?scp=85073120084&partnerID=8YFLogxK
U2 - 10.1109/RADAR.2019.8835766
DO - 10.1109/RADAR.2019.8835766
M3 - Conference contribution
AN - SCOPUS:85073120084
T3 - 2019 IEEE Radar Conference, RadarConf 2019
BT - 2019 IEEE Radar Conference, RadarConf 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE Radar Conference, RadarConf 2019
Y2 - 22 April 2019 through 26 April 2019
ER -