文档介绍：学号:200813020202

HEBEI UNITED UNIVERSITY

毕业论文
GRADUATE THESIS

设计题目:GPS 静态精密单点定位的精度分析
学生姓名:孙建南
专业班级:08 测绘 2 班
学院:矿业工程学院
指导教师:田桂娥讲师

2012 年 06 月 02 日
摘要
摘要
精密单点定位技术(Precise Point Positioning,简称 PPP)是目前国内外卫
星大地测量及相关领域的一个研究热点,其基本思想是利用 IGS(国际 GNSS
服务)提供的 GPS 精密星历和精密钟差文件,采用非差模型,用户通过一台
双频 GPS 接收机就可以直接得到分米级甚至厘米级精度的 ITRF 框架下的
三维地心坐标。在无地面控制的航空测量以及区域或全球的科学考察、海
洋测绘等领域具有广阔的应用前景。
本文介绍了 GPS 非差相位精密单点定位的原理、数学模型、精密单点
定位中应考虑的误差,并且分别阐述了消除或削弱这些误差的方法;借助
Bernese 软件进行解算单点定位的坐标,详细地阐述 PPP 解算的方法和过
程,对 CODE、IGR、IGS、JPL 提供的精密星历和钟差进行解算,得出使
用 CODE 的星历定位精度最高,可达厘米级;最后与基线解算结果的 RMS
值进行了对比,在大量实验的基础上,得出了 PPP 解与基线解在定位精度
上一致性的结论。

关键词:PPP;非差模型;Bernese 软件;数据处理;精度分析
I
Abstract
Abstract
Precise point positioning technology (abbreviated as PPP) is a hot research in the
field of satellite geodesy and its relevant area at home and abroad, whose basic principle
is to use the GPS precise ephemeris and precision clock difference document that
IGS(the international GNSS service) provides, taking the non-difference model and
making users to obtain decimeter level even centimeter level precision in the three
dimensional geocentric coordinates under ITRF frame directly through a dual-frequency
GPS receiver. In non-ground control's domains and air survey as well as region or
global scientific expedition, sea survey, the PPP has the broad application prospect.
This article introduces a non-differential phase of GPS PPP theory, mathematical
model of PPP, and the considered errors. Then we elaborated on methods to eliminate or
weaken these errors respectively. With the help of Bernese software solution for
single-point positioning coordinates, it detailed the description of PPP solver methods
and process. Calculating the precise ephemeris and clock errors provided by CODE、
IGR、IGS and JPL, it has been known that using the CODE ephemeris can obtain the
highest positioning accuracy up to centimeter-level; pared the RMS values