一种改进的去相干波束形成算法  

Modified beamforming algorithm for coherent signals and interferences

作　　者：陈华[1] 王安国[1] 冷文[1] 赵振新[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《电子测量技术》2012年第4期71-75,共5页Electronic Measurement Technology

摘　　要：基于均匀直线阵列提出了一种改进的去相干波束形成算法数据平滑波束形成算法。该算法在空间平滑波束形成算法的基础上,通过分析接收阵列数据协方差矩阵的结构,获取其中所包含的需进行平滑的所有子阵数据协方差矩阵信息。对接收阵列数据协方差矩阵进行平滑处理,构造出前后向子阵数据协方差矩阵,避免了子阵数据协方差矩阵的计算,在保证波束形成性能的同时,可灵活地调整子阵长度,有效地降低了运算量。计算机仿真验证了所提算法的正确性和有效性。A modified beamforming algorithm, named as the data smoothing beamforming algorithm, is proposed here. Based on the spatial smoothing beamforming algorithm,the information of all sub-array covariance matrixes that needs to be smoothed is found by analyzing the structure of the covariance matrix of the received data. To avoid the calculation of sub-array covariance matrixes, by means of smoothly processing the covariance matrix of the received data, the forward and backward sub-array covariance matrixes are constituted. The proposed algorithm can adjust the length of sub-array flexibly and reduce the calculation greatly, while guarantee the performance of beamforming. Several simulations verify the correctness and effectiveness of the proposed algorithm.

关 键 词：相干波束形成 数据平滑 空间平滑 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]