摘要
针对海洋测绘水下声学定位中常用的最小二乘平差法易受粗差和系统误差影响,导致解算精度和稳定性较差的问题,提出1种水下控制点解算的方法:介绍海底大地控制点标校基本原理和方法,给出全球卫星导航系统(GNSS)和水下声学定位模型;然后选用中国科学院测量与地球物理研究所(IGG)选权迭代法和一次范数最小法,用于水下声学定位数据精密标校。实验结果表明,一次范数最小法能有效抗拒异常观测扰动,抗差能力较强,能够实现浅海海底控制点厘米级定位精度。
Aiming at the problem that it is liable to gross errors and system errors for least squares adjustment method commonly used in underwater acoustic positioning of marine surveying and mapping,leading to low solution accuracy and weak stability,the paper proposed a solving method of underwater control points:the basic principle and method of subsea geodetic control point calibration were introduced,and the GNSS/underwater acoustic positioning model was given;then IGG weighted iterative method and L1-norm minimum method were selected to implement the precise calibration of underwater acoustic positioning data.Experimental result showed that the L1-norm minimum method could effectively resist the disturbance of abnormal observation with a strong anti-error ability,and achieve the centimeter level positioning accuracy of subsea control points in shallow sea.
作者
胡致远
王盼龙
唐秋华
周兴华
周东旭
HU Zhiyuan;WANG Panlong;TANG Qiuhua;ZHOU Xinghua;ZHOU Dongxu(School of Surveying and Mapping Science and Engineering,Shandong Science and Technology University,Qingdao,Shandong 266590,China;The First Institute of Oceanography,Ministry of Natural Resources of the People's Republic of China,Qingdao,Shandong 266061,China;Geodetic Data Processing Center,Ministry of Natural Resources of the People's Republic of China,Xi’an 710054,China)
出处
《导航定位学报》
CSCD
2020年第3期15-22,共8页
Journal of Navigation and Positioning
基金
国家重点研发计划(2016YFB0501703)
国家自然科学基金(41904040)。
关键词
海底大地控制点
水下声学定位
一次范数最小法
选权迭代法
seafloor geodetic control point
underwater acoustic positioning
L1-norm minimum method
weighted iterative method
