基于拖曳线列阵转向的波束形成方向向量估计  

Estimation of Beamforming Direction Vector Based on Steering of Towed Linear Array

作　　者：杨美娇 韩东[2] YANG Meijiao;HAN Dong(Midshipmen Group Five,Dalian Naval Academy,Dalian 116018;Department of Information System,Dalian Naval Academy,Dalian 116018)

机构地区：[1]海军大连舰艇学院学员五大队,大连116018 [2]海军大连舰艇学院信息系统系,大连116018

出　　处：《舰船电子工程》2022年第11期172-176,共5页Ship Electronic Engineering

基　　金：国家自然科学基金项目(编号:11374001);博士后基金项目(编号:2015M581182);基础加强计划技术领域基金项目(编号:2019-JCJQ-JJ-036)资助。

摘　　要：拖曳线列阵声纳是探测水下目标的重要装备。在实际使用时,由于探测盲区的存在,需要经常改变平台航向,从而实施对目标的探测与稳定跟踪。然而,平台转向会引起拖曳线列阵阵形畸变,使得实际接收的阵列数据与理想接收的阵列数据存在较大误差,导致目标方位估计不准。基于此,文中给出了平台转向过程中5个转向阶段的模型及方向向量估计表达式。仿真结果验证了表达式的正确性。通过该方法校准的方向向量为后续目标方位估计性能的提高奠定了基础。Towed linear array sonar is an important equipment for detecting underwater targets. In actual use,due to the existence of the detection blind zone,it is necessary to change the course of the platform frequently,so as to detect and stably track the target. However,platform steering will cause the shape deformation of the towed linear array,resulting in a big difference between the actual received array data and the ideally received array data. This can lead to inaccurate target bearing estimates. Therefore,the models and direction vector estimation expressions of the five stages in the platform steering process are given in this paper. The simulation results verify the correctness of the expressions. The direction vectors calibrated by this method can lay a foundation for the subsequent improvement of target orientation estimation performance.

关 键 词：拖曳线列阵 阵形估计 平台转向 方向向量 波束形成 

分 类 号：TN911.7[电子电信—通信与信息系统]