地理空间信息2024，Vol.22Issue(4)：88-91,4.DOI:10.3969/j.issn.1672-4623.2024.04.020
顾及基准点误差的自由设站平差及精度分析
Free Stationing Adjustment and Accuracy Analysis Considering the Datum Point Error
摘要
Abstract
Observation errors and datum point errors are two important factors that affect the accuracy of total station free stationing.At present,the classical constrained adjustment method is usually used for data processing of free stationing.For this method,after the station adjustment,the datum point errors will affect the coordinates of stationing point and detail points in the form of initial data error.Based on the basic principle analysis of total station free stationing,we established the adjustment model of free stationing considering the datum point errors and the observa-tion errors according to the thought of coordinate transformation,and gave the specific solution method.The experimental results show that the large datum point errors will have a negative effect on the accuracy of free stationing adjustment results.If the datum points have a high accuracy,the result of the new adjustment model is equivalent to that of the classical constrained adjustment.Otherwise,if the datum points have a low ac-curacy,the result of the new model is better than that of the classical constrained adjustment.关键词
自由设站/基准点误差/坐标转换/测量平差Key words
free stationing/datum point error/coordinate transformation/survey adjustment分类
天文与地球科学引用本文复制引用
刘琼琼,闫广峰..顾及基准点误差的自由设站平差及精度分析[J].地理空间信息,2024,22(4):88-91,4.基金项目
中国铁路兰州局集团有限公司科技研究开发计划资助项目(LZJKY2023033-1) （LZJKY2023033-1）
内江师范学院科研重点资助项目(2021ZD01). （2021ZD01）
