摘要
为改善极化敏感阵列主瓣抗干扰性能,分析了基于特征空间投影算法的交替极化敏感阵列的主瓣干扰抑制性能,并与常规极化敏感阵列进行了比较.讨论了期望信号和干扰信号的空域和极化域匹配系数对阵列输出信干噪比的影响;分析了在期望信号导向矢量失配情况下,采用特征空间投影算法改善两种极化敏感阵列的主瓣抗干扰性能.理论分析和仿真结果表明:在期望信号导向矢量存在误差情况下,基于特征空间投影算法的交替极化敏感阵列具有良好的稳健性.交替极化敏感阵列系统复杂度低、更易于工程实现.
To improve the anti-jamming performance of polarization sensitive array(PSA),the performance of alternate polarization sensitive array(APSA)based on the Eigen-space Projection Algorithm is analyzed and compared with the PSA,The influence on signal to interference plus noise ratio(SINR)of polarization match factor and space match factor is discussed.To the further study,the mainlobe anti-jamming performance using the Eigen-space Projection Algorithm based on two kinds of polarization sensitive arrays under the condition that there are errors in the steering vector of the desired signal is analyzed.Theoretical analysis and simulation results show that the mainlobe anti-jamming performance of APSA is robust to errors in the steering vector.The APSA has a low system complexity and is easier to engineering realization.
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第3期504-509,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(No.61271354)
关键词
极化敏感阵列
主瓣干扰
导向矢量失配
特征空间投影
polarization sensitive array
mainlobe interference
steering vector mismatch
eigen-space projection
