摘要
移动信号源周围的局部扩散,使得同一个信号源发出的信号可以通过不同的途径和角度到达天线接收阵列。点信号源被扩展为角度扩展信号。提出了一种基于极化敏感传感器均匀圆形阵列的扩展信号参数估计算法。采用一阶泰勒展开将均匀圆阵的数据模型进行了展开,并利用信号的极化差异构造出极化旋转的不变性,提出了扩展DOA矩阵方法对信号参数进行了估计。该算法对散射体的空间非模型分布具有很强的鲁棒性。计算机仿真实验证实了此算法的有效性。
In this paper,we propose a new algorithm with lower complexity for estimating the parameters of multiple scattered sources based on uniform circular array（UCA） with trimmed vector sensor.Based on the array manifold for UCA with trimmed vector sensor,the data model for multiple scattering sources is established using Taylor first-order expression.The polarization rotational invariance is formed using polarization diversity of sources.A scattered DOA matrix approach is proposed to estimate the parameters of the scattered signals.The proposed algorithm is robust to non-modeling spatial distribution of the scattered signal.Simulations are included to show the validity of this proposed method.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2010年第6期1224-1228,共5页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(60872088)
吉林大学研究生基金(20091020)资助项目
