测绘学报 ›› 2021, Vol. 50 ›› Issue (5): 695-705.doi: 10.11947/j.AGCS.2021.20200486

• 海洋测量学 • 上一篇    下一篇

顾及传播曲面的多波束波束脚印高精度快速归位算法

毕自军1,2, 赵建虎1,2, 郑根1,2, 刘美琴1,2   

  1. 1. 武汉大学测绘学院, 湖北 武汉 430079;
    2. 武汉大学海洋研究院, 湖北 武汉 430079
  • 收稿日期:2020-09-28 修回日期:2021-01-15 发布日期:2021-06-03
  • 通讯作者: 赵建虎 E-mail:jhzhao@sgg.whu.edu.cn
  • 作者简介:毕自军(1995-),男,硕士生,研究方向为多波束海洋地形测量。E-mail:2014301610020@whu.edu.cn
  • 基金资助:
    国家科技重大专项(2016YFB0501703);国家自然科学基金(41576107);沪海科(2020-01;2020-07)

High-precision and quick algorithm for multibeam sounding coordinates considering the propagation surface

BI Zijun1,2, ZHAO Jianhu1,2, ZHENG Gen1,2, LIU Meiqin1,2   

  1. 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    2. Institute of Marine Science and Technology, Wuhan University, Wuhan 430079, China
  • Received:2020-09-28 Revised:2021-01-15 Published:2021-06-03
  • Supported by:
    The National Key Research and Development Program of China (No. 2016YFB0501703);The National Natural Science Foundation of China (No. 41576107);The Shanghai Ocean Research(Nos.2020-01;2020-07)

摘要: 针对传统多波束波束脚印位置归算方法忽视收/发换能器位置差异给深水测深带来的显著影响,以及新算法虽顾及收/发差异但效率偏低的问题,本文提出一种顾及传播曲面的高精度快速波束脚印位置归算算法:①基于多波束测量和声线传播原理,提出波束传播曲面模型;②将扇区内波束分为插值结点和待插值点;针对前者,提出采用迭代搜索和插值的方法避免建立完整的传播曲面;③针对后者,利用插值结点参数,提出基于多项式插值的方法获取其发射单程时间和声线俯角、方位角;④综合完成所有波束脚印位置归算。浅水和中深水区试验表明,本文方法的交叉线检验精度与Caris相近,且均优于传统算法;相较Caris计算结果,本文同号波束脚印的深度偏差分别为0.35‰水深和0.11‰水深,且计算效率分别提高了8%和35%。

关键词: 多波束测深, 波束脚印归位算法, 迭代搜索, 多项式拟合, 传播曲面模型

Abstract: In order to solve the problem that the traditional algorithm for multibeam sounding coordinates ignores the significant impact of the difference in the position of the receiving and transmitting transducer on the deep-water sounding, and the new algorithm takes into account the difference in receiving and transmitting but low efficiency, this paper proposes a high-precision and quick algorithm for multibeam sounding coordinates that considers the propagation surface. First, based on the principle of multibeam measurement and sound ray propagation, a beam propagation surface model is proposed. Second, the beams in the sector are divided into interpolation nodes and points to be interpolated. For the former, a method based on iterative search and interpolation is proposed to avoid the establishment of a complete propagation surface. For the latter, using the interpolated node parameters, a method based on polynomial interpolation is proposed to obtain the single-way time, depression angle and azimuth angle of sound ray. Finally, all beam footprints are calculated. Experiments in shallow and medium-deep water areas show that the accuracy of the cross-line inspection method using this paper method is similar to that of Caris, and is better than the traditional algorithm. Compared with the results of Caris, the depth deviations of the same beam footprint in this paper are 0.35‰ depth and 0.11‰ depth, respectively, and the efficiency in this paper has increased by 8% and 35%, respectively.

Key words: multibeam sounding, algorithm for multibeam sounding coordinates, iterative search, polynomial fitting, propagation surface model

中图分类号: