摘要
随着全站仪在测量工作中的广泛使用,以坐标为观测值的数据处理成为内业工作的主要内容。根据最小二乘滤波原理,将工程岩土体变形监测中所获得的坐标观测值及其他常规观测值进行联合平差。结果表明,滤波后变形点的点位精度最大可提高1.35mm,最弱点亦提高0.94mm,均明显高于直接观测结果,而且各类观测值之间所形成的约束条件进一步增强了平差结果的可靠性。
Total station is widely used in various measurements coordinates as the observation values play an important role in the data processiong.The authors adjusted the coordinate observation values combined with other conventional observations deformation data using the least square filter.The results indicated that the precision was obviously improved with the 1.35 mm decrease of maximum point error and 0.94 mm decrease of the weakest point error,and the constraints of different observation also increased the reliability of the least square filter adjustment.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2014年第6期2068-2072,共5页
Journal of Jilin University：Earth Science Edition
基金
吉林省科技发展计划项目(20120437)
国家自然科学基金项目(41072244)
关键词
最小二乘
滤波
变形监测
坐标观测值
least square
filtering
deformation monitoring
coordinate value
