华北地区区域水准大气折光影响分析
发布时间：2018-11-07 19:20
【摘要】：大气折光对水准测量的影响是目前最重要且很难消除的误差之一。由折光影响产生的系统闭合差可能超过随机观测误差,那么在沿相同水准路线作重复观测的情况下,就可能会出现同符号闭合差。针对这一问题,该文提出了分析闭合环统计性质,从而提取出大气折光可能影响大的测段的方法。为了定量分析大气折光对水准观测结果的影响,提出不测温差的大气折光改正方法,对提取出的测段进行折光影响模拟。结果表明,大气折光对部分测环的水准环闭合差有系统性偏离影响,部分测段大气折光影响与地形存在明显的相关性。
[Abstract]:The influence of atmospheric refraction on leveling is one of the most important and difficult errors. The closed error of the system caused by refraction may exceed the random observation error, and if repeated observation is made along the same leveling route, there may be the same symbol closure error. In order to solve this problem, this paper presents a method to analyze the statistical properties of closed rings and to extract the section of atmospheric refraction which may have a great influence on it. In order to quantitatively analyze the effect of atmospheric refraction on the observation results of leveling, an atmospheric refraction correction method with unexpected temperature difference is proposed, and the refraction effect of the extracted section is simulated. The results show that the atmospheric refraction has a systematic deviation effect on the closure of the leveling ring in some measuring rings, and the atmospheric refraction in some measured sections is obviously related to the topography.
【作者单位】： 中国地震局第一监测中心;
【基金】：国家科技基础性工作专项(2015FY210400) 中国地震局第一监测中心科技创新主任基金项目(FMC2015005)
【分类号】：P224.1
本文编号：2317335
[Abstract]:The influence of atmospheric refraction on leveling is one of the most important and difficult errors. The closed error of the system caused by refraction may exceed the random observation error, and if repeated observation is made along the same leveling route, there may be the same symbol closure error. In order to solve this problem, this paper presents a method to analyze the statistical properties of closed rings and to extract the section of atmospheric refraction which may have a great influence on it. In order to quantitatively analyze the effect of atmospheric refraction on the observation results of leveling, an atmospheric refraction correction method with unexpected temperature difference is proposed, and the refraction effect of the extracted section is simulated. The results show that the atmospheric refraction has a systematic deviation effect on the closure of the leveling ring in some measuring rings, and the atmospheric refraction in some measured sections is obviously related to the topography.
【作者单位】： 中国地震局第一监测中心;
【基金】：国家科技基础性工作专项(2015FY210400) 中国地震局第一监测中心科技创新主任基金项目(FMC2015005)
【分类号】：P224.1
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