基于数据重构的宽带相干源MVDR算法  

MVDR algorithm for wideband coherent signals based on data reconstruction

作　　者：卞红雨[1,2] 王珺琳 

机构地区：[1]哈尔滨工程大学水声工程学院,哈尔滨150001 [2]哈尔滨工程大学水声技术重点实验室,哈尔滨150001

出　　处：《计算机应用研究》2014年第3期729-730,734,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(51179038);声纳技术国家级重点实验室开放基金资助项目(KF201105);中央高校基本科研业务费专项资金资助项目(HEUCF130508)

摘　　要：研究了基于数据重构的宽带相干源最小方差无畸变响应(MVDR)算法,以采样定理为基础,将同一时刻不同阵元的输出看做是连续线列阵的采样,将时域的数据重构方法引入空间的阵元域数据,从而实现宽带相干源的方位估计,并提出了一种聚焦误差求取方法,用于分析宽带相干源MVDR算法的性能。计算机仿真了FFT插值法和数据重构法的方位估计结果,表明对于宽带MVDR算法,数据重构方法比起FFT插值法具有更好的分辨概率和更低的均方根误差。This paper studied minimum variance distortionless response （MVDR） a^gorithm for wideband coherent signals based on data reconstruction, it based on the sampling theorem, regarded the same time output of the different array elements as sampling of a continuous line array, introduced the data reconstruction method0f time domain to the space domain for array element data, accordingly, it could solute coherent wideband signals, and then proposed a method obtaining the focusing er- ror, which could analyse the performance of MVDR algorithm for wideband cohe^ent Signals. It compared the performance to solute coherent signals using FFT interpolation and data reconstruction. The simulation results show that data reconstruction method has higher threshold of resolution and lower root mean square error than FFT interpolation using MVDR algorithm.

关 键 词：信号处理 方位估计 宽带相干源 数据重构 MVDR算法 聚焦误差 

分 类 号：TN911.7[电子电信—通信与信息系统]