一种分离小阵元数阵列信号的新方法  

A New Method of Separating the Signal in the Array with Small Number Sensors

作　　者：秦建存[1] 陈常嘉[1] 

机构地区：[1]北京交通大学电子信息工程学院

出　　处：《电子学报》2008年第9期1800-1803,共4页Acta Electronica Sinica

基　　金：国家自然基金资助项目(No.60502046)

摘　　要：小阵元数阵列在利用波束形成技术完成信号分离的任务时,受到阵元数、多径等条件的限制,性能会大幅度下降甚至失效.利用自适应对消和波束形成相结合的处理方法,通过置零点波束形成再级联自适应对消,在信号方向已知的条件下,可以大幅度提高阵列信号处理的性能,有效的进行信号分离.仿真实验证明了该方法的有效性.Limited by the number of sensors and multi-path propagation, the performance of the array with small number sensors might be degraded severely when it is combined with beamforming to separate signals.A new method is proposed by combing adaptive canceling with beamforming technology, in which the adaptive canceling is cascased with null beamforming. Under the assumption that the direction of the signal is known, the performance of array signal processing can be greatly enhanced. The validity of the method is also verified by the simulations.

关 键 词：小阵元数 波束形成 自适应对消 信号分离 多径 

分 类 号：TN911.71[电子电信—通信与信息系统]