声相关计程仪基阵设计方法  

A design method of arrays for acoustic correlation logs

作　　者：薛敬宏[1] 金铭[1] 乔晓林[1] 

机构地区：[1]哈尔滨工业大学(威海)信息工程研究所,山东威海264209

出　　处：《海洋工程》2011年第1期130-134,共5页The Ocean Engineering

摘　　要：针对声相关计程仪的测速特点,研究了一维、二维基阵的设计方法。一维基阵采用基于约束最小冗余的设计方法,可以获得比均匀线阵大得多的阵列孔径,从而提高基阵的利用率,但约束最小冗余线阵(RMRLA)的设计方法计算量巨大,并不适合二维基阵的设计。在重新定义冗余因子,建立理想位置矢量图模型,提出位置矢量重合率等概念的基础上,实现了适用于声相关测速需求的二维基阵的快速设计。仿真结果证明了该设计方法的可行性。A design method of one dimension and two dimension arrays for an acoustic correlation log（ACL） is studied.Based on the method of restricted minimum-redundancy linear array（RMRLA）,non-uniform linear array has significant performance in comparison with uniform linear array,such as extending aperture and full utilization of sensors.But the algorithm does not adapt to two-dimensional arrays design due to huge computation and the imperfection of the positional vector set.In this paper,the redundancy factor is redefined,an ideal positional vector map is built,the conception of positional vector coverage rate is proposed and a fast two-dimensional arrays design method is obtained.Simulation shows the feasibility of this method.

关 键 词：约束最小冗余线阵 冗余因子 位置矢量重合率 声相关计程仪 基阵 

分 类 号：TB56[交通运输工程—水声工程]