参考声速剖面误差对主动式声呐定位影响仿真分析  

Simulation analysis on reference sound velocity profile error influence on active acoustic positioning

作　　者：肖圳 薛树强[2] 韩保民[1] 李保金 孙悦 XIAO Zhen;XUE ShuQiang;HAN BaoMin;LI BaoJin;SUN Yue(Shandong University of Technology School of Civil Engineering and Geomatics,Zibo Shandong 255049,China;Chinese Academy of Surveying and mapping,Beijing 100830,China)

机构地区：[1]山东理工大学建筑工程与空间信息学院,山东淄博255049 [2]中国测绘科学研究院,北京100830

出　　处：《地球物理学报》2023年第12期4889-4899,共11页Chinese Journal of Geophysics

基　　金：国家自然科学基金(41931076);崂山实验室科技创新项目(LSKJ202205100,LSKJ202205105);国家重点研发计划(2020YFB0505802)资助。

摘　　要：参考声速剖面误差是制约水下定位精度最棘手的误差源.目前国际上主要存在声速剖面校正和传播时间校正这两类主动式声呐定位方法.本文提出了主动式声呐观测的信号传播时间追赶仿真算法,构建了带周期函数的经验正交函数声速场建模方法,实现了主动式声呐观测及水下定位海洋误差仿真,开展了声速剖面校正法和传播时间校正法两类定位模型对比分析.结果表明,虽然两种方法都具备良好的声速误差补偿效果,但两者仍存在毫米级差异;此外,海面测线构型优化有助于削弱参考声速误差影响.The reference sound velocity profile error is the thorny error source to restrict the underwater positioning accuracy.There are mainly two types of acoustic positioning methods developed in latest two decades,and they are the sound velocity profile correction method and the round-trip travel time correction method.In this paper,the two-round travelling time pursuit algorithm for simulating the active acoustic observation is proposed,and the sound velocity field modeling method with periodic function is constructed in the context of the empirical orthogonal function to achieve the active acoustic observation and the marine environmental error simulation of underwater positioning.The comparative study on the applicability and positioning accuracy of the two types of acoustic positioning models correcting the sound velocity profile error on the two-round travelling time is performed.The results show that although the two methods have almost the same performance on the velocity profile error compensation,there is still millimeters difference between them.In addition,it is significant to weaken the influence of the sound velocity profile error on the positioning by optimizing the surface tracking line.

关 键 词：海底控制网 水下定位 声速场反演 声速误差 主动式定位 

分 类 号：P229[天文地球—大地测量学与测量工程]