文档介绍：论文题目: 基于坐标模式的GPS网平差模型及其应用研究
专业: ***
本科生: *** (签名)
指导教师: *** (签名)
摘要
本论文主要探讨研究基于坐标模式的GPS网平差模型在GPS精密定位定轨后处理中的重要应用,在对传统的基于基线模式的GPS网平差模型认真分析的基础上,提出直接以所涉及的测站坐标信息、地球自转参数信息等为观测量的基于坐标模式的GPS网平差模型的优越性;在对SINEX文件结构分析及其与法方程的相互转换问题进行详细讨论的基础上,提出利用SINEX文件作为GPS精密定位定轨后处理的主要输入文件;在分析GPS基线向量的解算的基础上,对单基线解模式和多基线解模式进行对比研究;在对GPS精密定位定轨理论简要了解基础上,分别探讨了广播星历和精密星历;在对高精度GPS测量的坐标框架基准及其统一和转换研究分析的基础上,提出高精度GPS测量所依据的坐标参考基准是ITRF;在对多类参数联合估计方法简要论述的基础上,提出基于坐标模式的GPS网平差的理论基础是法方程叠加,并介绍了参数转换的原理和参数约化方法;并能应用Bernese软件对西宝高铁GPS网实测数据进行解算分析,再与中海达平差结果进行对比。
关键词: GPS,坐标模式,法方程叠加,ITRF,基线解算
Subject : Model of the Adjustment Based on Coordinate Pattern
And its Application
Specialty : ***
Name : *** (Signature)
Supervisor : *** (Signature)
ABSTRACT
This dissertation mainly research by discussion model of the work adjustment based on coordinate pattern plays a important application in post-processing for GPS precise positioning and orbit determination, based on the seriously analysis of traditional work adjustment model with baseline pattern, a new work adjustment model with coordinate pattern is brought forward. Station coordinates,earth rotation parameters(ERP) used directly as observations in the new model; Conducting discussion in detail based on the SINEX file structure and transformation between SINEX file and the normal equation,using SINEX files as the main input files in post-processing of GPS precise positioning and orbir determination is proposed;parison single-baseline mode with multi-baseline mode by research based on solution of GPS baseline vector by analysis;Broadcast eqhemeris and precise eqhemeris is discussed separately based on the understanding of theory of GPS precise positioning and orbit determination ;Putting forward the reference standard of coordinates of High-precision GPS measurements is ITRF,based on conducting the reference standard of coordinates of High-precision GPS measurements and its unity and transformation by research and analysis;The theoretical basis of th