任意阵型直接数据域算法  

Direct data domain algorithm for arbitrary array

作　　者：幸高翔[1] 蔡志明[1] 

机构地区：[1]海军工程大学电子工程学院,武汉430033

出　　处：《海军工程大学学报》2010年第6期19-23,共5页Journal of Naval University of Engineering

基　　金：国家重点基础研究发展规划资助项目(613660202)

摘　　要：提出了一种适用于任意阵形的直接数据域算法,解决了直接数据域算法在声纳、雷达的非均匀阵列上难以适用的问题。任意阵形直接数据域算法基于单快拍数据,利用不同阵形相邻阵元间可变的相位差进行运算,构造数据矩阵,并加以适当约束,解算出降维后阵列权值,用于波束形成。仿真计算表明:任意阵形直接数据域算法与原直接数据域算法在均匀线阵条件下性能是等同的,而在非均匀阵列条件下,前者性能明显好于后者,即上述对比表明了直接数据域算法的有效性。A direct data domain（DDD） algorithm suitable for arbitrary array shape was proposed,which can solve the problem that the original DDD method can not be used when the array is not a uni-form linear array such as in the system of SONAR and RADAR.Based on single snapshot data,the modified DDD algorithm was used to establish a data matrix by calculating the phase difference between adjacent sensors of different arrays.By some appropriate restrictions,a weighting vector was calculated and used for beam forming.The simulation shows that the performance is the same when both the modified DDD algorithm and the original DDD algorithm are used based on the uniform linear array,and that in the non-uniform linear array,the performance of the former is better.The comparisons indicate that the modified DDD algorithm is effective.

关 键 词：自适应阵 波束形成 直接数据域算法 任意阵形 

分 类 号：TN911.7[电子电信—通信与信息系统]