影响CPⅢ网距离观测值的气象误差分析研究  

Analysis and Research of Meteorological Error Affecting Distance Observed Values at CPⅢ Network

作　　者：赵梦杰 Zhao Mengjie(China Railway Design Institute Group Corporation,Tianjin 300142,China)

机构地区：[1]中国铁路设计集团有限公司,天津300142

出　　处：《工程地球物理学报》2019年第2期254-258,共5页Chinese Journal of Engineering Geophysics

基　　金：中国铁设引导课题项目(编号:7216109)

摘　　要：研究影响CPⅢ网距离观测值的气象误差,通过严密公式推导计算单位气象误差下影响CPIII网距离测量的具体值,并通过实验验证,根据此研究成果可预估在CPⅢ网距离测量的允许误差范围内,允许各气象误差存在量的最大范围,从而可有效地控制CPⅢ网的外业测量精度,指导内业进行数据修正,进而使外业测量误差减至最小。本次研究具体量化了满足规范要求前提下的最大温度、气压误差,可为后续CPⅢ网外业测量提供经验借鉴。In this paper, we will conduct the research on the meteorological error that has an influence on the distance observed values at the CPⅢ network. We will deduce the specific values from the distance measurement of the CPⅢ network under the influence of unit meteorological error by using the rigorous formula, and do some experiments to verify them. According to this research result, the maximum range of meteorological errors can be estimated within the allowable error range of distance measurement of CPⅢ network. This conclusion can effectively control the external measuring accuracy of CPⅢ network and guide the internal industry to correct the data, thus minimizing the number of errors in the external measurement. This paper quantifies the maximum errors of the temperature and pressure on the premise of meeting the regulatory requirements, which provides experience for subsequent CP Ⅲ network field measurement.

关 键 词：气象误差 CPⅢ网 距离观测值 分析研究 

分 类 号：P258[天文地球—测绘科学与技术]