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未知信源数的宽带波束域相干源测向算法
引用本文:王彬如,熊键,石敖广,杨世兴.未知信源数的宽带波束域相干源测向算法[J].电子信息对抗技术,2010,25(2):28-33.
作者姓名:王彬如  熊键  石敖广  杨世兴
作者单位:信息综合控制国家重点实验室,成都,610036
摘    要:对MUSIC算法进行了改进,提出了一种无需估计信源数的宽带波束域相干源测向算法,避免了由于信源数估计不准确以及存在相干源扰动时的测向失效问题,并通过恒定束宽波束形成,在减少测向计算量的同时,对宽带信号进行了空间聚焦,可同时适用于窄带信号和宽带信号测向,大大拓展了MUSIC算法的适应能力,为其在不同领域获得广泛应用扫清了算法上的障碍。仿真结果证实了所提出改进算法的有效性。

关 键 词:信源数  宽带波束域  恒定束宽  空间聚焦  相干源  DOA估计

Broadband Beam Space DOA Estimation Algorithm of Coherent Sources Without Sources Number
Authors:WANG Bin-ru  XIONG Jian  SHI Ao-guang  YANG Shi-xing
Affiliation:(National Information Control Laboratory, Chengdu 610036, China)
Abstract:A modified MUSIC algorithm based on broadband beam space is introduced, which can be applied to coherent sources without sources number. This algorithm can resolve the problem that MU- SIC algorithm is not effective under unknown sources number and coherent sources conditions. Fur- thermore, it can reduce computation of D0A estimation and focus broadband sources with constant beam-width beam-forming. And it is effective for both narrowband and broadband signals, and would be applied in most fields about MUSIC algorithm. Computer simulation results approve the validity of this new algorithm.
Keywords:sources number  broadband beam space  constant beam-width  spatial focusing  coherent sources  DOA estimation
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