存在阵列误差条件下的信号波达方向和多普勒频率估计  

Estimation of Direction of Arrival and Doppler Frequency with Array Error

作　　者：陶建武[1] 石要武[2] 常文秀[2] 

机构地区：[1]空军航空大学航空控制工程系,吉林长春130022 [2]吉林大学通信工程学院,吉林长春130025

出　　处：《兵工学报》2005年第3期323-326,共4页Acta Armamentarii

基　　金：国家自然科学基金资助项目 (69872 0 12 )

摘　　要：在均匀线阵存在阵列误差的情况下,提出了一种信号波达方向和多普勒频率估计方法。首先建立了阵列误差模型,采用总体最小二乘法和最大似然法,估计出多个信号的波达方向和多普勒频率,并分析了相位模糊性及给出了解模糊方法。仿真结果表明,此算法是有效的,并具有一定的稳健性。When there exists general array error in uniform linear array (ULA), an estimation of the direction of arrival (DOA) and Doppler frequency for signals was proposed. The array error model of ULA was set up. Detailed analysis of ambiguous problem was presented. Unambiguous DOA and unambiguous Doppler frequencies for signals were calculated by total least squares (TLS) and maximum likelihood (ML). Simulated results show that the algorithm is valid and robust.

关 键 词：信息处理技术 信号处理 方向角和频率估计 总体最小二乘 模糊性 阵列误差 

分 类 号：TN911.7[电子电信—通信与信息系统]