GPS基线解算与网平差问题的研究与实践

发布时间：2018-04-22 15:49

本文选题：切比雪夫多项式拟合 + 快速求解整周模糊度　；参考：《辽宁工程技术大学》2013年硕士论文

【摘要】：在信息化极速发展的时代背景下，GPS的应用与推广得到了极大的发展，相应的GPS数据处理的研究课题更是得到了前所未有的深入研究。本文以实现用于研究与教学的GPS数据处理软件为出发点，以解算载波相位双差模型GPS基线向量和基线向量的网平差为研究的主要内容，兼顾对GPS数据处理方法的比较，通过解算的GPS基线向量和坐标数据与商用软件的解算结果作比较，满足预期的精度要求，最终达到了基于VS平台下开发的能进行GPS基线解算与GPS基线网平差的软件系统的目的。本文主要是分析了国内外GPS数据处理方面的研究现状，，介绍了GPS定位的基本模式和测量误差，着重分析了适用于编程的GPS数据处理的结构和方法，实现了程序的基本功能。最主要的有以下几点： 1)通过对读入的GPS数据结构进行研究，利用它的结构特点重新组合成更具GPS观测数据的物理特性和便于计算机处理的数学特性的新型数据。采用双频载波相位观测值对周跳进行探测及修复。考虑到计算卫星坐标时会在相邻时段出现GPS卫星坐标多值性问题和减少计算机的运算负荷方法时，利用了chevyshev多项式对广播星历计算的坐标进行了拟合，编写了用于试验拉格朗日内插方法的内插阶数与内插时间间隔对内插结果影响的程序； 2)探讨了快速求解整周模糊度的理论，验证了在观测时间足够长和基线长度在一定范围以内采用取整法的可行性； 3)系统性的描述了双差模型下的GPS基线向量和基线网平差的计算公式，解析了能适用于计算机编程的各法方程系数项组成数据内容； 4)采用曲面拟合的方法对高程进行拟合，通过对结果进行分析，找出了几点可能对结果造成影响的因素； 5)通过与商用GPS数据处理软件比较基线解算和基线网平差的结果进行分析，验证了本次论文设计方法的正确性。
[Abstract]:Based on the GPS data processing software for research and teaching , the GPS data processing software is used to compare the GPS baseline vector and the baseline vector between the GPS baseline vector and the baseline vector to meet the expected accuracy requirement . Finally , the aim of the software system based on the VS platform for the calculation of GPS baseline and the GPS baseline network adjustment is achieved .

This paper mainly analyzes the current situation of GPS data processing at home and abroad , introduces the basic mode and measurement error of GPS positioning , analyses the structure and method of GPS data processing suitable for programming , and realizes the basic function of program .

1 ) By studying the read - in GPS data structure , the new data of the physical characteristics of more GPS observation data and the mathematical characteristic which is convenient for computer processing are regrouped by using its structural characteristics . The coordinates of the broadcast ephemeris are fitted by using the two - frequency carrier phase observation value .

2 ) The theory of fast solving integer ambiguity is discussed , and the feasibility of adopting the rounding method within a certain range is verified after the observation time is long enough and the baseline length is within a certain range ;

3 ) The calculation formula of the GPS baseline vector and the baseline net adjustment under the double difference model is systematically described , and the composition data content of each method equation coefficient item which can be applied to computer programming is analyzed ;

4 ) fitting the elevation with the method of surface fitting , analyzing the result , and finding out several factors which can influence the result ;

5 ) By comparing the results of baseline calculation and baseline net adjustment with commercial GPS data processing software , the correctness of the design method of this paper is verified .

【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;P207.2

【参考文献】