GNSS-声学位置服务中声速误差修正方法

doi:10.11947/j.AGCS.2023.20220097

测绘学报 ›› 2023, Vol. 52 ›› Issue (4): 536-549.doi: 10.11947/j.AGCS.2023.20220097

GNSS-声学位置服务中声速误差修正方法

陈冠旭^1,2, 高柯夫^3,4, 赵建虎⁵, 刘经南^3,4,5, 刘焱雄^1,2,5,6, 刘杨^1,2, 李梦昊^1,2,6

1. 自然资源部第一海洋研究所, 山东青岛 266061;
2. 自然资源部海洋测绘重点实验室, 山东青岛 266061;
3. 武汉大学卫星导航定位技术研究中心, 湖北武汉 430079;
4. 国家卫星导航定位技术研究中心, 湖北武汉 430079;
5. 武汉大学测绘学院, 湖北武汉 430079;
6. 河海大学地球科学与工程学院, 江苏南京 211100

收稿日期:2022-02-18 修回日期:2023-02-11 发布日期:2023-05-05
通讯作者: 刘经南 E-mail:jnliu@whu.edu.cn
作者简介:陈冠旭(1989-),男,博士,助理研究员,研究方向为海洋测绘、GNSS精密定位和GNSS-声学定位。E-mail:gxchen@fio.org.cn
基金资助:
国家重点研发计划(2020YFB0505805);中央级公益性科研院所基本科研业务费专项资金(2022S03);国家自然科学基金(42004030);崂山实验室科技创新项目(LSKJ202205102);中国工程科技发展战略湖北研究院咨询研究项目(HB2020B13);山东省技术创新引导计划(2020YFB0505800)

The method of sound speed errors correction in GNSS-acoustic location service

CHEN Guanxu^1,2, GAO Kefu^3,4, ZHAO Jianhu⁵, LIU Jingnan^3,4,5, LIU Yanxiong^1,2,5,6, LIU Yang^1,2, LI Menghao^1,2,6

1. First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
2. Key Laboratory of Oceanic Surveying and Mapping, Ministry of Natural Resources, Qingdao 266061, China;
3. GNSS Research Center, Wuhan University, Wuhan 430079, China;
4. National Engineering Center for Satellite Positioning System, Wuhan 430079, China;
5. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
6. School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China

Received:2022-02-18 Revised:2023-02-11 Published:2023-05-05
Supported by:
The National Key Research and Development Program of China (No. 2020YFB0505805);Basic Scientific Fund for National Public Research Institutes of China (No. 2022S03);The National Natural Science Foundation of China (No. 42004030);Financially supported by Laoshan Laboratory (No. LSKJ202205102);Consulting Research Project of Hubei Research Institute of China Engineering Science and Technology Development Strategy (No. HB2020B13);Technology Innovation Pilot Program of Shandong Province (No. 2020YFB0505800)

摘要/Abstract

摘要： 声速误差是GNSS-声学定位中的主要误差源,制约了GNSS-声学位置服务的精度。基于海洋时空基准网的思路,本文研究了GNSS-声学位置服务中声速误差的修正方法。首先,提出了一种声速剖面时域变化分层模型,以削弱声速的时空代表性误差;然后,针对没有声速剖面的海域,借鉴GNSS对流层误差的处理方法,提出了GNSS-声学位置增强服务的方法;最后,面向潜航器位置增强服务,进行了海洋声速层析方法的分析。利用南海水深3000 m海域的实测数据对上述声速误差修正方法进行验证,结果表明:经验正交函数法分层构建的声速场能以分米级精度确定海底控制点的位置;基于海底的控制点,利用本文所提出的GNSS-声学位置增强服务方法可为水平距离3000 m范围内的测船提供分米级精度的位置增强服务;层析的海洋声速剖面,在深度大于潜航器的区间内精度优于3.5 m/s。

关键词: GNSS-声学定位, 声速误差, 经验正交函数, 映射改正, 声速层析

Abstract: Sound speed error is the main error source in GNSS-acoustic positioning, which restricts the accuracy of GNSS-acoustic positioning service. Based on the idea of marine space-time frame network, this paper studies the correction method of sound speed error in GNSS-acoustic location service. First, an improved empirical orthogonal function (EOF) method is proposed to construct the sound speed model hierarchically to eliminate the temporal-spatial representation error of sound speed. Then, for the sea area without sound speed profile, the idea of GNSS-acoustic location argument service is proposed based on GNSS tropospheric error processing method. Finally, for the underwater vehicle location argument service, the analysis of the ocean sound speed tomography method is carried out. The above correction idea of sound speed error is verified by using the measured data of 3000 m depth sea area in the South China Sea. The results show that the sound speed field constructed by the improved EOF method can determine the position of seafloor reference station with the decimeter-level accuracy. Based on the seafloor reference stations, the GNSS-acoustic location argument service proposed in this paper can provide decimeter-level accuracy location service for the ship within 3 km. The regional accuracy of the tomographic ocean sound speed profile in the depth interval below the underwater vehicle is better than 3.5 m/s.

Key words: GNSS-acoustic positioning, sound speed error, empirical orthogonal function, mapping function correction, sound velocity tomography

中图分类号:

P229.2

陈冠旭, 高柯夫, 赵建虎, 刘经南, 刘焱雄, 刘杨, 李梦昊. GNSS-声学位置服务中声速误差修正方法[J]. 测绘学报, 2023, 52(4): 536-549.

CHEN Guanxu, GAO Kefu, ZHAO Jianhu, LIU Jingnan, LIU Yanxiong, LIU Yang, LI Menghao. The method of sound speed errors correction in GNSS-acoustic location service[J]. Acta Geodaetica et Cartographica Sinica, 2023, 52(4): 536-549.

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GNSS-声学位置服务中声速误差修正方法

The method of sound speed errors correction in GNSS-acoustic location service

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