摘要
水准平差常用的定权方法有按测段距离定权和按测站数定权两种。介绍了这两种定权方法的原理,比较了水准平差中以每km高差中误差和每测站高差中误差作为单位权中误差定权的特点,以实例计算分析说明了建筑沉降观测中水准平差定权方法的合理选择。
The distance of surveying section and the number of stations are commonly used to determine weights for levelling adjustment. This paper introduces the principle of these two weight-determining methods and compares the unit weight RMSdetermined by height difference RMS per kilometre with that determined by height difference RMS per station. Example results show the proper selection of weight-determining methods for levelling adjustment in building settlement observation.
出处
《测绘地理信息》
2015年第6期44-45,52,共3页
Journal of Geomatics
关键词
沉降观测
权
单位权中误差
水准平差
settlement observation
weight
unit weight RMS
levelling adjustment
