仿奥米亚棕蝇的小型短波天线阵测向算法  

Ormia ochracea like direction finding with a small antenna array

作　　者：周浩[1] 杨佳诚 田应伟[1] 徐新军 ZHOU Hao;YANG Jiacheng;TIAN Yingwei;XU Xinjun(School of Electronic Information,Wuhan University,Wuhan 430072,China;Wuhan Hailan Ruihai Marine Science and Technology Co.Ltd.,Wuhan 430073,China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]武汉海兰瑞海海洋科技有限公司,湖北武汉430073

出　　处：《华中科技大学学报（自然科学版）》2021年第12期89-93,118,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(62071337);广东省重点领域研发计划项目(2020B1111020003).

摘　　要：根据奥米亚棕蝇(Ormia ochracea)的耦合听觉系统放大两耳信号相位差的机制,提出将奥米亚棕蝇耦合听觉系统运用于小型天线阵列的测向中.通过调整天线的导向矢量,放大包含来波信号到达角信息的不同通道接收信号间的相位差,再利用多重信号分类(MUSIC)算法进行测向.利用垂直放置的二元单极子交叉环阵列进行仿真实验,结果表明:利用奥米亚棕蝇耦合系统的MUSIC算法估角具有更高的估角精度,10 dB信噪比条件下估角均方根误差相对传统MUSIC算法估角降低了2°,估角精度提升了约55%,验证了该方法应用于小型天线阵列测向的可行性.Inspired by the function of the coupled aural system of the Ormia ochracea to amplify the phase difference between the two ears,the coupled aural system of the Ormia ochracea was proposed to apply to the direction finding of small antenna array.By adjusting the steering vector of the antenna,the phase difference was amplified between the received signals in different channels that contain the arrival angle information of the incoming wave signal,and then the arrival angle was estimated by using the multiple signal classification(MUSIC)algorithm.The simulation results shows that the MUSIC algorithm angle estimation based on the Ormia ochracea coupling system has higher angle estimation accuracy by using the vertical binary cross-loop/monopole antenna array.Under the condition of 10 dB signal to noise ratio,the root mean square error of angle estimation is 2°lower than that of traditional MUSIC algorithm,and the angle estimation accuracy is improved by about 55%,which verifies the feasibility of this method in small antenna array direction finding.

关 键 词：小型天线阵列 奥米亚棕蝇 到达角估计 多重信号分类算法 垂直二元单极子交叉环阵列 

分 类 号：TN959.71[电子电信—信号与信息处理]