一种低信噪比情况下宽带高分辨测向算法  

A High Resolution Algorithm for Wideband Direction Finding in Low SNB Fields

作　　者：杨莘元[1] 赵大勇[1] 陈娟[1] 刁鸣[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《弹箭与制导学报》2009年第6期285-287,共3页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：一般宽带侧向算法在低信噪比情况下分辨率很低。文中提出一种新的构造聚焦矩阵的方法,该方法聚焦前后阵列信噪比没有任何损失。新方法在信噪比很低的情况下,仍能实现高分辨测向,且突破了瑞利角分辨极限的限制。相比经典的CSM算法,该方法在低信噪比情况下具有更高的精度。实验结果证明了该算法的有效性。The performance of common wideband direction-finding algorithms are not varying well in low signal to noise ratio fields. This paper proposed a new method of constructing focusing matrix and the signal to noise ratio of the array before and after focusing was equal without any loss. New approach can distinguish the two targets which are close to each other even break the restriction of Rayleigh resolution limit and has higher accuracy compared to TCT algorithm when the signal to noise ratio is very low. Extensive simulation results demonstrate that the algorithm has good performance.

关 键 词：宽带测向 高分辨 信号子空间算法 聚焦 

分 类 号：TN911.7[电子电信—通信与信息系统]