基于跨域信息同步的多基地主动定位方法  

Multi-Base Active Location Based on Cross-Domain Information Synchronization

作　　者：王永丰 林晋美 董雷 邱赛 WANG Yongfeng;LIN Jinmei;DONG Lei;QIU Sai(AVIC Avionics Co,Ltd,Beijing 100086,China;North China Institute of Computing Technology,Beijing 100083,China;Faculty of Information Science and Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中航航空电子有限公司,北京100086 [2]中国电子科技集团公司第十五研究所,北京100083 [3]中国海洋大学信息科学与工程学部,山东青岛266100

出　　处：《水下无人系统学报》2024年第4期713-717,共5页Journal of Unmanned Undersea Systems

摘　　要：信息同步问题是多基地主动声呐系统应用的难点之一。现有研究和应用中通常假设接收站已知发射站脉冲发射时刻、声源空间位置信息以及发射波形参数,能够据此计算回波声程并对目标进行定位,同时获得回波信号时间处理增益,但这些条件在实际中并不一定能满足。文中讨论了不同应用场景中信息同步面临的障碍和可能采取的方案;然后针对收发站之间存在外部通信链路,但链路不可靠或时延不确定的情况,提出了一种利用跨域信息同步实现多基地主动定位的方法;该方法利用直达波先于目标回波到达接收站这一基本物理规律,接收站先通过外部链路获得发射站位置和波形参数信息,并利用直达波到达时刻和站间距离估计发射时刻,具有较高的工程可行性;最后,对影响时间和位置同步精度的因素以及由时空信息误差所引起的目标定位误差进行讨论和仿真分析。The information synchronization problem is one of the difficulties in the application of multi-base active sonar systems.In existing research and application,it is usually assumed that the receiving station knows the pulse transmission time of the transmitting station,the spatial location information of the sound source,and the transmission waveform parameters,thus can calculate the echo sound path,locate the target,and obtain the time processing gain of the echo signal.However,these conditions may not be met in practice.The obstacles and possible solutions for information synchronization in different application scenarios were first discussed.A multi-base active location method based on cross-domain information synchronization was then proposed for the situation where there is an external communication link between the receiving and transmitting stations,but the link is unreliable,or the delay is uncertain.This method used the basic physical law that the direct wave arrives at the receiving station before the target echo.The receiving station first obtained the position and waveform parameter information of the transmitting station through the external link and then estimated the transmission time according to the direct wave arrival time and the distance between stations.It had high engineering feasibility.Finally,the factors affecting the accuracy of time and position synchronization and the target positioning error caused by the time and space information error were discussed and simulated.

关 键 词：跨域 信息同步 多基地 主动声呐 

分 类 号：TJ6[兵器科学与技术—武器系统与运用工程] U675.7[交通运输工程—船舶及航道工程]