RTK技术复位固定样地的精度分析
Accuracy Analysis of Reset Fixed Sample Plot by RTK Technology
苏俊彦 1田淑静 2巨正平 1王浩波1
作者信息
- 1. 国家林业和草原局西南调查规划院,650031,昆明
- 2. 云南国土资源职业学院,652501,昆明
- 折叠
摘要
工程测量中RTK技术能提供实时、高精度的定位信息.依托森林资源年度监测工作,采用消除不同系统之间坐标差值法,使用网络RTK复位固定样地.根据样地角点定位标志复位个数的不同情况,分别分析角点坐标中误差、样地闭合差和周长差是否满足技术规程对样地复位精度的要求.研究结果:1)样地角点定位标志全部复位,坐标中误差最大值为 1.34 m;2)样地角点定位标志部分遗失,补设后的样地闭合差最大值为0.49 m、周长差最大值为 0.93 m.本研究复位的 40 个样地均满足技术规程的精度要求.
Abstract
RTK technology in engineering survey can provide real-time and high-precision positio-ning information.Based on the annual forest resources monitoring,the method of eliminating the difference of coordinates between different systems was used to reset the fixed sample plots by using network RTK.According to the different number of corner positioning marks reset in sample areas,the error in corner coordinates,the closure error of the sample areas and the perimeter difference were analyzed to detect whether they met the requirements of the technical specification for the preci-sion of the sample area reset.The results were as follows:1)All the corner positioning marks of the sample plots were reset,and the maximum error of the coordinates was 1.34 meters;2)Some of the corner positioning marks of the sample plots were lost,and the maximum closure error and perimeter error of the sample plots after replacement were 0.49 meters and 0.93 meters,respectively.All the 40 sample plots reset in this study met the accuracy requirements of the technical regulations.
关键词
RTK技术/复位样地/坐标中误差/闭合差/周长差Key words
RTK technology/resetting plot/mean square error of coordinate/closing error/perime-ter error引用本文复制引用
基金项目
云南国土资源职业学院科研项目(2022YJ13)
出版年
2024
国家科技期刊平台
NSTL
万方数据