高差差分改进模型及改正方法  

Height Difference Model Improvement and Calculation Method for Deformation Points

作　　者：王孟穹 李远文 殷道光 WANG Meng-qiong;LI Yuan-wen;YIN Dao-guang(Guangdong Province Nonferrous Geological Surveying and Mapping Institute,Guangzhou Guangdong 510080,China)

机构地区：[1]广东省有色地质测绘院,广东广州510080

出　　处：《现代测绘》2024年第5期29-33,64,共6页Modern Surveying and Mapping

摘　　要：自动化极坐标三维监测的高差差分改正方法在操作过程中,常会受到每期基准观测数据质量和一些极端点位的影响,给观测点改正带来不可预期的模型误差。针对这一问题,提出了一种高差差分改进模型和变形点高差计算方法。以某露天石灰岩矿山边坡监测结果为试验数据,在监测系统统一基准及标准值的前提下,利用高差差分改进模型对机器人自动化测量的数据进行处理,通过对比分析两期次改正后的高差,验证了该模型方法的准确性和有效性。结果表明,稳定点修正后残差较小且表现为随机性,较好地修正了系统性误差影响。Aiming at the height differential correction method in automatic polar coordinate monitoring which is often affected by the quality of datum observation data in each period and some extreme points,the influence of unexpected model error is caused to the observation points.Based on the analysis of height differential,an improved height differential correction model and the calculation method for deformation points are proposed in this paper.The experimental data are the slope monitoring result of an open-pit limestone mine,and the robot automatic measurement data is calculated using the improved height differential correction model on the premise of the unified reference and standard value of monitoring system,and the accuracy and reliability of the model are verified by comparing the correction height difference of the same points.The results show that the corrected residuals of the stability points are small and random,and the systematic errors are well corrected.

关 键 词：三角高程测量 高差差分 大气折光 视线高差 残差 

分 类 号：P224[天文地球—大地测量学与测量工程]