Optimal Design of Improved L-shaped Coprime Array Based on Difference and Sum Co-array  

作　　者：Rui Fang Xiangnan Li Haixia Wu Wei Gao Shiwei Ren 

机构地区：[1]Oil Production Technology Research Institute,Dagang Oilfield Company,Tianjin 300280,China [2]School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Beijing Institute of Technology》2020年第3期379-385,共7页北京理工大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(61801024)。

摘　　要：The concept of difference and sum co-array(DSCA)has become a new design idea for planar sparse arrays.Inspired by the shifting invariance property of DSCA,a specific configuration named here as the improved L-shaped array is proposed.Compared to other traditional 2D sparse array configurations such as 2D nested arrays and hourglass arrays,the proposed configuration has larger central consecutive ranges in its DSCA,thus increasing the DOF.At the same time,the mutual coupling effect is also reduced due to the enlarged spacing between the adjacent sensors.Simulations further demonstrate the superiority of the proposed arrays in terms of detection performance and estimation accuracy.

关 键 词：planar array geometry two-dimensional direction of arrival estimation differencesum co-array mutual coupling 

分 类 号：TN492[电子电信—微电子学与固体电子学]