Title :
Performance analysis of Sidelobe Canceller under the influence of ground clutter
Author :
Xiaobin Liu ; Jin Liu ; Feng Zhao ; Wenming Zhang
Author_Institution :
State Key Lab. of Complex Electromagn. Environ. Effects on Electron. & Inf. Syst., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
By adopting Sidelobe Canceller (SLC) technology to realize spatial adaptive filtering in radar, it can eliminate the jamming from the antenna sidelobe. However, radar suffers serious ground clutter when detecting the target in low-altitude. The spatial complexity of ground clutter reduces the performance of SLC and even makes it invalid. Due to the influence of ground clutter, the optimum weighs calculated by SLC cannot be applied and the disagreement of main and auxiliary channel responses increases, which is certified by numerous simulation results in the case of standoff jamming and ground clutter. Therefore the estimate for the angle of arrival (AOA) of the jamming deviates from the real value. Besides, the bias of the AOA of the jamming increases against the jamming to clutter ratio (JCR) and the performance of SLC decreases consequently.
Keywords :
direction-of-arrival estimation; filtering theory; jamming; object detection; radar clutter; radar signal processing; AOA estimation; SLC technology; angle of arrival estimation; antenna sidelobe; auxiliary channel response; ground clutter; jamming to clutter ratio; radar clutter; sidelobe canceller technology; spatial adaptive filtering; target detection; Clutter; Equations; Jamming; Radar clutter; Receiving antennas;
Conference_Titel :
Communication Problem-Solving (ICCP), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-4246-6
DOI :
10.1109/ICCPS.2014.7062237
