倾斜摄影测量与GNSS-RTK方法土方量测算精度对比分析
Comparative analysis for the accuracy of tilt photogrammetry and GNSS-RTK earthwork measurement
李瑜金1
作者信息
- 1. 福建省国土测绘院有限公司,福建 厦门 361000
- 折叠
摘要
土方量的计算关系到工程项目的整体预算及资金投入,对项目的运行起到关键的作用.结合实际项目案例对土方量测算进行统计分析,倾斜摄影测量水平方向中误差为0.025 m,高程精度为0.034 m,再利用倾斜摄影测量技术和GNSS-RTK技术对测区内土方量进行对比测算,两者差值率为0.62%,完全符合项目预期需求.因此,得出结论:倾斜摄影测量技术与GNSS-RTK测量技术精度相当,利用倾斜摄影测量技术不仅能够保证测量精度,并能较好简化外业数据采集流程,为土方项目有效节约时间成本和经济成本.
Abstract
The calculation of earthwork volume is related to the overall budget and capital input of the project,which plays a very key role in the operation of the project.In this paper,statistical analysis is carried out on the calculation of earthwork volume combined with actual project cases.The error in the horizontal direction of tilt photogrammetry is 0.025m,and the accuracy of elevation is 0.034m.Both tilt photogrammetry technology and GNSS-RTK technology are used to compare and calculate the earthwork volume in the measuring area,and the difference rate between them is 0.62%,which fully meets the expected demand of the project.Therefore,it is concluded that the accuracy of tilt photogrammetry technology is equivalent to that of GNSS-RTK measurement technology.The application of tilt photogrammetry technology can not only ensure the measurement accuracy but also simplify the field data acquisition process.It can effectively save time cost and economic cost for the earthwork projects.
关键词
倾斜摄影测量/GNSS-RTK/土方量/精度Key words
tilt photogrammetry/Global Navigation Satellite System Real-Time Kinematic/earthwork/precision引用本文复制引用
出版年
2024
NETL
NSTL
万方数据