UUV航向机动中拖曳线阵阵形及左右舷分辨  

Linear array distortion and port/starboard discrimination during UUV heading maneuvering

作　　者：陈伟 郑鹏 吴国庆[1] 郑庆新 CHEN Wei;ZHENG Peng;WU Guo-Qing;ZHENG Qing-xin(China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《舰船科学技术》2023年第21期110-114,共5页Ship Science and Technology

基　　金：国家重点研发计划(2021YFC2802300)。

摘　　要：针对UUV拖曳线阵航速较慢,在遇到海流或航向机动进行左右舷分辨时,线阵阵形畸变现象导致的测向精度变化问题,通过采用Ablow和Schechter提出的缆索偏微分控制方程组对拖曳线阵的阵形变化进行数值求解,采用经典的波束形成方法获得拖曳线阵声呐发生阵形畸变后的波束响应曲线,对海流导致的线阵偏航、UUV航向机动导致的线阵畸变现象引起的波束响应变化进行仿真分析。结果表明:在稳定的侧向海流作用下,线阵发生偏转但基本维持直线型阵列,对目标方位的估计精度影响较小,但线阵探测获得的目标方位与目标相对UUV航向的方位有稳定偏差角度(线阵方向与UUV方向的夹角),无法解决左右舷模糊的问题。在UUV进行航向机动时,线阵发生畸变弯曲,波束主瓣有所变宽,一定程度增加了目标方位估计的误差,但可获得对镜像源较好的抑制效果,实现了对目标的左右舷分辨。Aiming at the problem of direction finding accuracy change caused by the distortion phenomenon of the line array when encountering the ocean current or heading maneuver to resolve the left and right sides of the UUV towed linear array,the formation change of the towed linear array was numerically solved by using the cable partial differential control equation system proposed by Ablow and Schechter,and the beam response curve after formation distortion of the towed line array sonar was obtained by the classical beamforming method,and the line array yaw caused by the sea current.The results show that under the action of stable lateral ocean currents,the linear array is deflected but basically maintains a linear array,which has little impact on the estimation accuracy of the target azimuth,but the target azimuth obtained by linear array detection has a stable deviation angle(the angle between the linear array direction and the UUV direction)between the target orientation and the UUV direction,which cannot solve the problem of left and right side blurring.When the UUV performs heading maneuver,the linear array is distorted and bent,and the main lobe of the beam becomes wider,which increases the error of target azimuth estimation to a certain extent,but a good suppression effect on the mirror source can be obtained,so as to achieve the left and right port resolution of the target.

关 键 词：UUV航向机动 拖曳阵阵形 左右舷分辨 

分 类 号：U674.7[交通运输工程—船舶及航道工程]