PPK技术在危岩落石区的应用与精度分析  

Application of PPK Technology in Rockfall Area and Its Accuracy Analysis

作　　者：黄惠 麦瑜潇 HUANG Hui;MAI Yuxiao(No.6 Geological Team of Guangxi Zhuang Autonomous Region,Guigang 537100,China;Guilin Institute of Land Resources Planning and Surveying,Guilin 541000,China)

机构地区：[1]广西壮族自治区第六地质队,广西贵港537100 [2]桂林市国土资源规划测绘院,广西桂林541000

出　　处：《地理空间信息》2023年第3期142-144,共3页Geospatial Information

基　　金：国家自然科学基金资助项目(41071294);广西空间信息与测绘重点实验室主任基金资助项目(桂科能1207115-09)。

摘　　要：利用大疆精灵4结合RTK技术获取3个危岩落石区的图像,对比分析了有地面控制点和无控制点利用PPK技术两种光束法区域网平差方法 (简称方法1、方法2),并通过均方根误差评估了两种方法的精度。结果表明,方法1比方法2获得的数据精度高,但带有PPK技术的方法2为危岩落石区等危险区和暴露区的监测和研究提供了一个可行的解决方案,且也可获得较好的精度,满足平时的工作需求。In this study, we used DJI phantom 4 RTK to obtain the images of three dangerous rockfall areas, and compared two different bundle adjustment methods(method 1 and method 2 for short) with ground control points and no control points combined with PPK technology. Then,we used the root mean square error(RMSE) calculated at the test points to evaluate the accuracy of two methods. The results show that the data accuracy obtained by method 1 is higher than method 2. However, method 2 with PPK technology provides a feasible solution for monitoring and studying dangerous and exposed areas such as rockfall area, and can also achieve good accuracy, which meets the demand of usual work.

关 键 词：危岩落石区 光束法区域网平差 PPK 精度 

分 类 号：P231[天文地球—摄影测量与遥感]