【作者】 刘根友； 郝晓光； 柳林涛；

【Author】 Liu Genyou, Hao Xiaoguang and Liu Lintao (Institute of Geodesy and Geophysics, CAS, Wuhan, Wuhan)

【机构】 中国科学院测量与地球物理研究所；

【摘要】 本文给出了解决粗差问题的两种计算方案:①将粗差作为待估参数,采用拟稳平差思路解秩亏问题,直接获得粗差;②选取部分观测值作为准现测值,采用部分最小二乘法获得待估参数,将非准观测值的残差作为粗差。结果表明,两种方案与“拟准检定法”具有相同的效果,具有粗差的现测值在平差时不起作用。更多还原

【Abstract】 Two approaches to gross error detection are proposed in this paper. The first approach is that the gross errors (G)are treated as parameters to be estimated, and using the idea of "Quasi-Stable adjustment" ( GTrGr = min ) to solve rank deficient problem. The second approach is that part observations are selected as accurate observations. The principle of partial least-square estimation ( VTrVr = min ) is used, and the residuals of the other observations are treated as gross errors. The results of these two approaches are same as QUAD(Quasi Accurate Detection), and the observations having gross errors no longer effect on the adjustment.更多还原