阵列频率特性改进研究  

Research on improvement of array frequency characteristics

作　　者：田野[1,2] 蒋毅[1] 张曙[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学工程训练中心,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2015年第3期409-413,共5页Journal of Harbin Engineering University

基　　金：工业和信息化部基础研究基金资助项目(40106030503)

摘　　要：传统的均匀线阵(ULA)和均匀圆阵(UCA)的实时性、宽频带特性以及旁瓣级等难以满足系统需求,通过对传统的ULA和UCA的频率特性与其阵形的关系进行了分析,提出了采用有向阵元改进UCA的综合性能。利用半圆阵的阵形结构提高了采用有向阵元的UCA的综合性能。仿真分析表明,该结构获得了更好的宽频带特性,并在具备实时性的同时有较佳的综合性能,满足了快速宽带波束形成系统的需求。It is hard for classical uniform linear array（ ULA） and uniform circular array（ UCA） to have high performance in real-time,wideband frequency characteristics and side-lobe level in the wideband beamforming system.In this paper,the relationship between frequency characteristics and array shapes of ULA and UCA is analyzed and a structure with directional elements is used to improve comprehensive performance of UCA. The performance of the structure is further improved by semi-circular array. Simulation and analysis results confirmed that the beamforming system based on the structure can get better wideband frequency characteristics,real-time performance and other performance than ULA and UCA. It can meet the requirement of the fast wideband beamforming system.

关 键 词：波束形成 均匀圆阵 有向阵元 频率特性 相控阵 

分 类 号：TN820.1[电子电信—信息与通信工程]