摘要
在充分考虑GNSS定位引起的多种误差情况下,对GNSS打桩定位系统的定位精度进行了估算。通过10万t级油品化工泊位实际工程案例,利用GNSS对18根桩进行了定位,其中x偏差符合要求的桩数占比为78%,y偏差符合要求的桩数占比为44%。分析定位误差的原因主要是由船上安装GNSS间距过小、无法整体反映船体偏移量所导致的。
In this paper,the positioning accuracy of GNSS pile driving positioning system is estimated under the condition of fully considering various errors caused by GNSS positioning.Through the actual engineering case of 100 000 ton oil chemical berth,18 piles are positioned by GNSS.The proportion of x deviation meeting the requirements is 78%,and the proportion of y deviation meeting the requirements is 44%.It is analyzed that the positioning error is mainly caused by the too small spacing of GNSS installed on the ship,which can not reflect the ship offset as a whole.
作者
刘金磊
李允良
LIU Jinlei;LI Yunliang(School of Marine Technology and Geomatics,Jiangsu Ocean University,Lianyungang 222005,China;Shanghai KANWO Technology Co.,Ltd.,Shanghai 201400,China)
出处
《江苏海洋大学学报（自然科学版）》
CAS
2022年第1期45-50,共6页
Journal of Jiangsu Ocean University:Natural Science Edition
关键词
GNSS
坐标计算
精度估算
海洋工程
GNSS
coordinate calculation
accuracy estimation
offshore engineering
