起算数据个数与待定点精度之关系分析

Analysis on the Relationship Between the Number of Initial Data and the Accuracy of the Fixed Point

论文中,在经典测量平差范畴内,以水准网为例,讨论了起算数据个数与待定点精度之间的关系,并给出了它们之间的关系曲线图。计算的结果表明:在测量中,当多余观测数增大时,待定点的精度会不断提高,但提高的幅度越来越小,多余观测数增大到一定程度后,待定点的精度提高不再明显,这对于实际使用已没有意义。计算结果也表明,当起算数据个数达到一定量时,待定点的精度也不再提高。

In the category of classical surveying adjustment, taking the leveling network as the example, paper discussed the relationship between the number of the original data and the precision of the fixed point, and presents the graph of their relationship. The results showed that:in the measurement, when increasing the number of redundant observation, the accuracy of fixed point will increase, but the magnitude of increase will more and more small, redundant observation number increases to a certain extent, improvement of the precision of the point to be no longer obvious, it has no meaning for practical use. The results also show that when the number of initial data reaches a certain amount, the accuracy of the fixed point is no longer improved.