无人机RTK联合EGM2008高程异常改正的精度分析与应用
Accuracy Analysis and Application of UAV RTK Combined with EGM2008 Elevation Anomaly Correction
陆玉霞 1胡方涛2
作者信息
- 1. 汶上县自然资源和规划局,山东 济宁 272100
- 2. 山东省水利勘测设计院有限公司,济南 250013
- 折叠
摘要
无人机RTK以其免像控作业的优势在测绘行业应用越来越广泛,但成图精度不高是限制其应用的关键问题.利用EGM2008 模型在计算高程异常上的优势,参与到免像控成图解算,比较分析该方法的可行性.通过已知点计算区域内的高程异常改正值,将其作为固定差对EGM2008 模型转换高程误差进行改正.实例验算表明,无人机RTK联合EGM2008 高程异常改正后的精度可满足大多数测量工程要求.
Abstract
Unmanned aerial vehicle(UAV)loaded with RTK is more and more widely used in the surveying and mapping industry due to its advantage of avoiding image control operations,but the low mapping accuracy is a key issue that limits its application.By taking advantage of the EGM2008 model in calculating elevation anomalies and participating in image free control graphical calculations,the feasibility of this method was compared and analyzed.Calculate the elevation anomaly correction value within the region using known points,and use it as a fixed difference to correct the elevation error of the EGM2008 model conversion.The example verification shows that the accuracy of the unmanned aerial vehicle RTK combined with EGM2008 elevation anomaly correction can meet the requirements of most surveying engineering.
关键词
无人机RTK/EGM2008/高程异常改正/精度分析Key words
UAV with RTK/EGM2008/correction of elevation anomalies/precision analysis引用本文复制引用
基金项目
中央引导地方科技发展基金项目(YDZX2022019)
出版年
2024
NETL
NSTL
万方数据