传感技术学报2011，Vol.24Issue(3)：392-397,6.DOI:10.3969/j.issn.1004-1699.2011.03.016
基于最小冗余线阵的阵列扩展方法
A New Method for Array Extension Based on Minimum Redundancy Linear Array *
摘要
Abstract
A new array extension method based on minimum redundancy linear array is proposed to overcome the low hydrophone utilization rate problem and accumulated noise error existing in the most passive synthetic aperture methods based on uniform linear array. The proposed method combines forth-order cumulant with passive synthetic aperture method to extend array using fewer hydrophones. Firstly, successive measurements of a virtual uniform linear array are constructed by applying forth-order cumulant to measurements of minimum redundancy linear array. Then,the array is extended by compensating phase differences using passive synthetic aperture technique. The proposed method not only improves utilization of hydrophones, but also effectively suppresses Gaussian noise. Moreover,it inherits the advantages of the passive synthetic aperture technique. Simulation and experiments results show that this method can generate larger aperture using fewer hydrophones through less iterations and effectively suppress Gaussian noise and reduce computation burden. Moreover, this method can achieved better peeformance than ETAM method in Gaussian white noise and colored noise environment.关键词
阵列信号处理/阵列扩展/合成孔径/四阶累积量/最小冗余线阵Key words
array signal processing/ array extension/ synthetic aperture/ forth-order cumulant/ minimum redundancylinear array分类
信息技术与安全科学引用本文复制引用
李博,孙超..基于最小冗余线阵的阵列扩展方法[J].传感技术学报,2011,24(3):392-397,6.基金项目
国家自然科学基金项目(60872146) （60872146）
