摘要
为评估海上无人船USV进行非差模糊度固定AR的PPP性能,首先基于S变换简述了多模PPP的可估模型,然后根据一组USV实测的近海多模数据评估了多系统PPP-AR的收敛时间和定位精度。结果表明:相较于浮点PPP,进行模糊度固定的PPP收敛时间减少至19.2min,改善约33.3%;模糊度固定解在东、北、天3个方向的精度分别为1.5cm、0.8cm和4.8cm,表明PPP-AR技术可较好应用于厘米级的USV定位。
In order to evaluate the performance of PPP(Precision Point Positioning)of the Unmanned Surface Vehicle(USV)for undifferenced ambiguity resolution(AR),the estimable model of multi-GNSS PPP is briefly described based on S transformation.Then,based on a group of USV measured offshore multi-GNSS data,the convergence time and positioning accuracy of multi-GNSS PPP-AR are evaluated.The results show that compared with PPP,the convergence time of PPP-AR is reduced to 19.2 minutes,improving about 33.3%;The accuracy of PPP-AR in the east,north and up directions is 1.5 cm,0.8 cm and 4.8 cm respectively,indicating that PPP-AR technology can be better applied to USV positioning for cm-level.
作者
向民志
柴洪洲
尹潇
杜祯强
田祥雨
XIANG Minzhi;CHAI Hongzhou;YIN Xiao;DU Zhenqiang;TIAN Xiangyu(Institute of Geospatial Information,Strategic Support Force Information Engineering University,Zhengzhou 450001,China;College of Environmental and Resource Sciences,Zhejiang A&F University,Hangzhou 311300,China)
出处
《海洋测绘》
CSCD
北大核心
2023年第5期41-45,51,共6页
Hydrographic Surveying and Charting
基金
国家自然科学基金(42074014)。
关键词
全球卫星导航系统
精密单点定位
S变换
模糊度固定
海上定位
无人船定位
global navigation satellite systems
precision point positioning
S transformation
ambiguity resolution
sea positioning
unmanned surface vehicle positioning
