【作者】 张焱；

【导师】 陈永生；

【作者基本信息】 东北大学 ， 大地测量学与测量工程， 2015， 硕士

【摘要】 探讨和研究单历元算法并在加入北斗导航系统后在变形监测中的应用,基于.NET平台的VisualC#语言编写出单历元双星实时变形监测软件,然后分别对北斗和GPS的单历元数据精度进行分析。本文首先介绍对北斗卫星导航的概况、GNSS单历元在变形监测的应用,分析研究了北斗加入单历元变形监测的优势所在,其次了解GNSS变形监测的一些相关理论,包括时间系统、常用坐标系统、RINEX格式说明、变形监测中的误差、伪距观测以及载波相位观测。然后研究单历元变形监测中所涉及到的算法,分别分析了时间、坐标之间的相互转换、卫星位置的计算、单历元解算的基本原理以及引入了阻尼LAMBDA法求解整周模糊度。之后根据前面的理论与算法编写单历元双星实时监测软件,并对软件的数据进行验证和分析。本系统是将一个固定IP的电脑当成服务端,然后通过无线网络(GPRS/CDMA)将客户端(接收机)的数据实时传给服务端。在服务端将接收机的二进制原始数据转成十六进制,再提取相应的星历数据和观测值数据并写成RINEX格式和进行单历元解算。这样将数据利用最大化,用户即可以实时监测又可以静态后处理。对得到的RINEX文件使用LGO导入,验证RINEX文件的完整性与准确性,分别对北斗和GPS的单历元数据进行分析、对比。单历元双星实时变形监测软件不仅克服了以前GPS观测的局限性,而且还加入了我国自主研发的北斗卫星导航系统,有效的提高了数据的稳定性以及精确性,为工程提供了可靠的保障。更多还原

【Abstract】 The single epoch algorithm is discussed and the deformation monitoring applications with Beidou navigation system adding single epoch algorithm are investigated,a single epoch data real-time deformation monitoring software is written based on the.Net platform of visual C#language,and Beidou and GPS single epoch data accuracy are also analyzed in this paper.Firstly,the Beidou satellite navigation and GNSS single epoch application in deformation monitoring are briefly introduced,and the advantage of Beidou adding single epoch algorithm in the deformation monitoring is analyzed.Secondly,some related theories of GNSS deformation monitoring discussed,including time system,coordinate system and RINEX format description,deformation monitoring error and pseudo observations and carrier phase observation.Then the algorithm involved in single epoch deformation monitoring is studied,the mutual transformation between the coordinate and time,the calculation of satellite position and the principle of single epoch solution calculation are analyzed respectively and damping lambda method for solving integer ambiguity is introduced.Finally,based on the theory and algorithm discussed above,a single epoch data real-time monitoring software is written and the software were verified and analyzed by the data captured.A fixed IP computer is served as the server in this system,the data in the client(receiver)are transmitted to the server in real time through the wireless network(GPRS/CDMA).On the server,the original binary data of the receiver were transformed into hexadecimal,the corresponding ephemeris and observation data are extracted and written to the RINEX format and single epoch is calculated.This will maximize the use of data,the user can monitor the deformation in real-time and can post-process with static data.Then the RINEX files obtained are introduced using lgo import to validate RINEX file integrity and accuracy,Beidou and GPS single epoch data are analyzed and compared.The single epoch data real-time deformation monitoring software not only overcomes the limitations of traditional GPS observations,and also integrates the autonomous research and development of the Beidou satellite navigation system,which effectively improves the data stability and accuracy,and provides a reliable guarantee for the project.更多还原