TY - GEN
T1 - Robust beamforming for jammers suppression in MIMO radar
AU - Li, Yongzhe
AU - Vorobyov, Sergiy A.
AU - Hassanien, Aboulnasr
PY - 2014
Y1 - 2014
N2 - Robust beamforming for multiple-input multiple-output (MIMO) radar in the background of powerful jamming signals is investigated in this paper. We design two minimum variance distortionless response (MVDR) type beamformers with adaptiveness/robustness against the powerful jammers for colo-cated MIMO radar. Specifically, the MVDR beamformer is firstly designed for known jammers in the sector-of-interest, which maintains distortionless response towards the direction of the target while imposing nulls towards the directions of jammers. Then the adaptive/robust MVDR beamformer is designed for the general case of unknown in-sector jammers and/or out-of-sector interfering sources. Convex optimization techniques are used in both of the designs. Moreover, we derive a closed-form solution to the simplified second design. Based on this solution, we derive efficient power estimates of the desired and/or interfering sources in the context of powerful jammers and non-ideal factors such as array calibration errors and target steering vector mismatches. We demonstrate that the capability of efficient jammers suppression using these designs is unique in MIMO radar.
AB - Robust beamforming for multiple-input multiple-output (MIMO) radar in the background of powerful jamming signals is investigated in this paper. We design two minimum variance distortionless response (MVDR) type beamformers with adaptiveness/robustness against the powerful jammers for colo-cated MIMO radar. Specifically, the MVDR beamformer is firstly designed for known jammers in the sector-of-interest, which maintains distortionless response towards the direction of the target while imposing nulls towards the directions of jammers. Then the adaptive/robust MVDR beamformer is designed for the general case of unknown in-sector jammers and/or out-of-sector interfering sources. Convex optimization techniques are used in both of the designs. Moreover, we derive a closed-form solution to the simplified second design. Based on this solution, we derive efficient power estimates of the desired and/or interfering sources in the context of powerful jammers and non-ideal factors such as array calibration errors and target steering vector mismatches. We demonstrate that the capability of efficient jammers suppression using these designs is unique in MIMO radar.
UR - http://www.scopus.com/inward/record.url?scp=84906734661&partnerID=8YFLogxK
U2 - 10.1109/RADAR.2014.6875667
DO - 10.1109/RADAR.2014.6875667
M3 - Conference contribution
AN - SCOPUS:84906734661
SN - 9781479920341
T3 - IEEE National Radar Conference - Proceedings
SP - 629
EP - 634
BT - 2014 IEEE Radar Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Radar Conference, RadarCon 2014
Y2 - 19 May 2014 through 23 May 2014
ER -