电讯技术2018，Vol.58Issue(2)：138-144,7.DOI:10.3969/j.issn.1001-893x.2018.02.004
多子阵合成孔径声纳系统中的侧摆运动误差补偿
Motion Compensation of Sway Error for Multireceiver Synthetic Aperture Sonar System
摘要
Abstract
Considering the sway error of the low frequency synthetic aperture sonar(SAS) system,this pa-per proposes a motion compensation method based on the echo data of redundant elements.The presented method firstly obtains the wrapped phase error via averaging the echo data of the overlapped phase centers between two successive pings in the range dimension.Then,the unwrapped phase error can be got through the sliding superposition.Based on the estimated phase error,the motion compensation for the echo data of the multireceiver SAS is carried out.The simulation results show that the presented method can accurately estimate the sway error.And the estimation deviation is smaller than 0.002 m.After compensating the mo-tion error,the imaging results,which are mostly the same with the case of no motion error,are obtained.It greatly improves the target focusing performance and satisfies the need of the motion error compensation in the low frequency SAS system.The real data processing results further validate the efficiency of the presen-ted method.关键词
多子阵合成孔径声纳/冗余阵元/运动补偿/成像算法Key words
multireceiver synthetic aperture sonar(SAS)/redundant element/motion compensation/imaging algorithm分类
信息技术与安全科学引用本文复制引用
张学波,方标,应文威..多子阵合成孔径声纳系统中的侧摆运动误差补偿[J].电讯技术,2018,58(2):138-144,7.基金项目
国家自然科学基金资助项目(61601473) （61601473）
装备预研基金(9140C290401150C29132) （9140C290401150C29132）
