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Precise Point Positioning with GPS: A New Approach for Positioning, Atmospheric Studies, and Signal Analysis.

机译：GPS精确定位：一种用于定位，大气研究和信号分析的新方法。

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摘要

Precise Point Positioning (PPP) is one of the existing techniques to determine point coordinates using a GPS (Global Positioning System) receiver. In this technique observations collected by a single receiver are used in order to determine the three components of the coordinates, as well as other parameters, such as the receiver clock error and total neutral atmosphere delay.;Existing neutral atmosphere delay models have also been studied in this thesis, and an enhanced model has been developed and has had its performance assessed. The development of the model is based on measured meteorological parameters, and the rationale of the model is established in order to make its use as practical as possible for users of positioning techniques, such as PPP.;The PPP technique is the main object of this thesis. The main idea is that PPP can be used not only for positioning, but for a variety of tasks, such as GPS data analysis. The fact that the observation model used in this technique has to take into consideration most of the several effects present on GPS signals, and that observations are un-differenced (there are no differences between receivers or between satellites), makes PPP a powerful data analysis tool which is sensible to a variety of parameters. When the observation model is designed for positioning, most of these parameters (e.g., satellite clocks) are used as known quantities, but in this research the observation model was modified and enhanced to develop a PPP package that can be used as a tool for determining other parameters rather than position, receiver clock error and neutral atmosphere delay. These estimated parameters include ionospheric delay, code biases, satellite clock errors, and code multipath plus noise.
机译：精确点定位（PPP）是使用GPS（全球定位系统）接收器确定点坐标的现有技术之一。在这项技术中，使用单个接收器收集的观测值来确定坐标的三个分量以及其他参数，例如接收器时钟误差和总中性大气延迟。；还研究了现有的中性大气延迟模型在本文中，开发了一个增强的模型并对其性能进行了评估。该模型的开发是基于测得的气象参数，并建立了模型的基本原理，以便对定位技术（如PPP）的用户尽可能地实用。PPP技术是该技术的主要目标论文。主要思想是PPP不仅可以用于定位，还可以用于多种任务，例如GPS数据分析。该技术中使用的观测模型必须考虑到GPS信号上存在的大多数影响中的大多数，并且观测值没有差异（接收机之间或卫星之间没有差异），这使PPP成为功能强大的数据分析适用于各种参数的工具。当观测模型被设计用于定位时，大多数这些参数（例如，卫星时钟）被用作已知量，但是在本研究中，观测模型被修改和增强以开发可以用作确定工具的PPP软件包。其他参数，而不是位置，接收器时钟误差和中性大气延迟。这些估计的参数包括电离层延迟，代码偏差，卫星时钟误差以及代码多径加上噪声。

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  • 作者

    Leandro, Rodrigo Figueiredo.;

  • 作者单位

    University of New Brunswick (Canada).;

  • 授予单位 University of New Brunswick (Canada).;
  • 学科 Geodesy.;Atmospheric Sciences.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 234 p.
  • 总页数 234
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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