论文部分内容阅读
目前在我国的大坝水平位移观测,尤其是坝上各视准端点的水平位移测定中,交会测量仍然得到广泛的应用。为了确保交会测量既满足交会点的精度要求,又使所耗的工作量最经济合理,一些单位已注意到在选择尽可能良好的交会图形的基础上,应对有关观测元素采取非等精度观测的方法。但是,在进行观测元素的精度配置时,大都缺乏一定的理论根据,或者象文献那样,只能针对具体的图形,用尝试的方法,即以多种不同的精度配置进行计算,从中选择相对合理的作业方案。这样往往事倍功半,而且所得到的方案也不一定是优化的。
At present, the horizontal displacements of dam in China, especially in the horizontal displacements of the sighting end of dam, are still widely used. In order to ensure that rendezvous measurements not only meet the accuracy requirements of rendezvous points, but also make the most economical and reasonable workloads, some units have noticed that based on the selection of the best possible rendezvous graph, non-equal precision observations should be taken on the observed elements method. However, the precision of observation elements is mostly lack of theoretical basis, or as the literature, only for specific graphics, try the method, that is, with a variety of different precision configuration to calculate, from which to choose relatively reasonable Work plan. This is often less effective, and the resulting solution may not be optimized.