摘要
一测回水平方向标准差是指全站仪用盘左、盘右观测同一目标所求得的方向值的准确度,是衡量全站仪测角质量高低的标志。本文叙述了多目标法水平方向标准差的测定过程,给出了多目标法水平方向标准差检定结果的计算模型,并以测角标称精度为3″的南方NTS-663全站仪作为样机,利用多目标法进行水平方向一测回标准差检定,通过4个检定序列,3个测回获取的水平方向观测数据计算一测回水平方向标准差。然后利用数理统计原理求出给定标准差δ的置信区间的上限Ca,用Ca与被检定全站仪的测角准确度标称值比较决定是否达到全站仪的标称值,结果表明本文的实验方法正确可靠,具有一定的实用价值。
One measuring-process standard error in horizontal direction is the accuracy of horizontal direction values obtained from the same object observed with total station in ＂ dial left＂ and ＂ dial right＂ position respectively and a criterion of angle measurement quality of total station. The paper demonstrated the calibration process of one measuring-process standard error by use of multi-object method and computational model of one measuring-process standard error was given. A case study for SOUTH 3＂NTS-663 total station was performed taking advantage of multi-object method. Then, upper limit Ca of the range of confidence one measuring-process standard deviation error 8 in horizontal direction was given on the basis of statistical principle. At last, it was determined whether the tested total station was qualified based on comparison between the upper limit Ca of standard error δ and nominal accuracy of the tested total station. It is indicated that this method was correct, reliable, and had some applied value.
出处
《测绘科学》
CSCD
北大核心
2011年第1期153-154,共2页
Science of Surveying and Mapping
基金
国家863目标导向项目(2009AA12Z327)
关键词
多目标法
全站仪检测
一测回水平方向标准差
multi-object method
total station calibration
one measuring-process standard error in horizontal direction
