高采样率GPS动态精密定位数据处理及其应用研究

发布时间：2018-02-13 09:31

本文关键词： 高采样率动态GPS TRACK GPSTOOLS 卫星钟差形变分析　出处：《西安科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：传统的观点认为, GPS大地测量主要集中于研究地壳长周期变化特征，但随着GPS观测精度和处理方法的不断改进和提高,高采样率和超高采样率GPS接收机的相继出现，，使得GPS测量在研究地壳瞬时形变方面有了巨大的发展。本论文目的是研究高采样率动态GPS数据的解算方法与应用前景。在此基础上，本文针对高采样率动态GPS数据处理中考虑的一些因素进行了如下研究：（1）系统分析了高采样率GPS数据处理方法以及GPS数据处理中参考框架问题。讨论了不同频率载波相位的线性组合及应用。分析了影响GPS定位精度的主要因素及消除和减弱方法。（2）介绍了GAMIT中高精度事后动态定位模块TRACK以及东京海洋大学研制的GPS精密单点数据处理软件GPSTOOLS。系统阐述了TRACK的参数设置方法以及TRACK模块的模糊度解算方法。同时结合上述软件通过算例分析了相对动态定位和精密单点定位两种处理方法在高采样率GPS数据处理中的定位精度。（3）分析了不同采样间隔的卫星钟差数据对精密单点定位的影响，选用几种常用的插值方法对5min和30s采样间隔的钟差数据进行加密，对比分析各种插值方法的插值效果。（4）通过利用高采样率车载实验数据对车载接收机的运动轨迹进行分析，以及对2010年墨西哥地震震时5Hz观测数据进行处理，分析震时地表形变位移。通过分析两个实例，验证高采样率GPS动态定位在研究物体瞬时变化中的应用前景。
[Abstract]:The traditional view is that GPS geodesy mainly focuses on studying the characteristics of long period crustal variation. However, with the continuous improvement and improvement of GPS observation accuracy and processing methods, high sampling rate and ultra-high sampling rate GPS receivers appear one after another. GPS measurement has made great progress in the study of crustal instantaneous deformation. The purpose of this paper is to study the calculation method and application prospect of dynamic GPS data with high sampling rate. In this paper, some factors considered in dynamic GPS data processing with high sampling rate are studied as follows:. In this paper, the methods of GPS data processing at high sampling rate and the reference frame in GPS data processing are systematically analyzed. The linear combination and application of different frequency carrier phases are discussed. The main factors affecting the positioning accuracy of GPS and the methods of eliminating and weakening are analyzed. In this paper, the high precision post dynamic positioning module (TRACK) in GAMIT and the GPS precise single point data processing software GPSTOOLSdeveloped by Tokyo Ocean University are introduced. The parameter setting method of TRACK and the ambiguity resolution method of TRACK module are systematically described. The positioning accuracy of relative dynamic positioning and precise single point positioning in GPS data processing with high sampling rate is analyzed by examples. The influence of satellite clock difference data with different sampling intervals on precise single point positioning is analyzed. Several commonly used interpolation methods are used to encrypt the clock difference data between 5 min and 30 s sampling intervals. The interpolation results of various interpolation methods are compared and analyzed. In this paper, the motion trajectory of the vehicle-mounted receiver is analyzed by using the high sampling rate vehicle-borne experimental data, and the 5Hz observation data of the Mexico earthquake on 2010 are processed to analyze the ground deformation displacement during the earthquake. Two examples are analyzed. Verify the application prospect of high sampling rate GPS dynamic location in studying the instantaneous change of object.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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