摘要
当前在海洋地形测绘中,主要采用GNSS导航定位与水声探测设备相结合的方式进行水下地形测绘。但由于GNSS导航定位技术在部分远海海域观测信号质量差,定位精度低,影响了海洋地形测绘的精度。为有效提高定位精度,使用GNSS与INS相结合的组合定位模式,采用PP-RTX技术对观测数据进行后处理。同时,将该组合定位技术与多波束水深测量技术相结合,应用于某海域地形测绘,获取测区的三维地图。精度分析结果表明,该方法可进一步提高数据的可靠性,从而提高海洋地形测绘精度。
At present,the combination of GNSS and underwater acoustic detection equipment is mainly used to complete underwater topographic surveying and mapping in marine topographic surveying and mapping.Due to the poor quality of observation signals and low positioning accuracy in some distant sea areas,GNSS affects the accuracy of marine topographic surveying and mapping.In order to improve the positioning accuracy effectively,this paper adopts the combined positioning mode combining GNSS and INS,and uses the PP RTX technology to post process the observation data.At the same time,the paper combines the combined positioning technology with the multi beam bathymetric survey technology and applies it to the topographic surveying and mapping of a certain sea area to obtain a 3D map of the area.The results of precision analysis show that this method can further improve the reliability of data and the precision of marine topographic surveying and mapping.
作者
郑伯桢
周长江
葛俊涛
ZHENG Bozhen;ZHOU Changjiang;GE Juntao(Shaoguan Land and Resources Technology Center,Shaoguan,Hunan 512026,China;Institute of Surveying Mapping and Geoinformation,Henan Geologic and Mineral ExplorationDevelopment Bureau,Zhengzhou,Henan 450006,China)
出处
《测绘标准化》
2022年第3期57-60,共4页
Standardization of Surveying and Mapping
关键词
海洋测绘
组合定位
多波束水深测量
事后实时扩展
Hydrographic Surveying and Charting
Integrated Positioning
Multi Beam Bathymetric Survey
PP RTX
