石油物探测量GPS网平差的算法研究与实现
发布时间：2018-08-30 16:39
【摘要】：GPS(Global Positioning System)测量控制网平差是用来评定GPS网的内符合精度,发现和剔除GPS基线向量观测值中可能存在的粗差以及获取网点坐标的方法,在GPS测量数据处理中占据重要地位。本文结合石油物探测量的特点,对GPS网平差的数据处理流程及算法进行研究,并予以编程实现,具有一定的实用价值。本文首先介绍了GPS测量数据处理常用的坐标系统及坐标转换的基本原理;对GPS基线解算方法进行了研究,包括:基于双差相对定位的传统基线解算方法和基于非差精密单点定位(precise point positioning,PPP)的基线解算方法;重点研究了GPS工程控制网平差的理论和相关算法,包括GPS网的三维无约束平差、三维约束平差、二维约束平差以及GPS高程拟合;利用MATLAB语言,本文实现了GPS工程控制网平差的基本算法,编制了相应的程序;以CPI GPS控制网和吉兰泰工区石油物探测量GPS控制网观测数据为例,通过与COSAGPS软件和TGO软件处理结果的比较和分析,对自编GPS网平差程序进行了算法验证。结果表明:1)自编GPS网平差程序三维无约束平差结果在三个坐标分量上的最大误差均在1.0cm以内,系统偏差优于7mm,均方根误差(RMS)优于7mm;2)自编程序三维约束平差结果在三个坐标分量上的最大误差均在1.5cm以内,系统偏差优于8mm,均方根误差(RMS)优于8.5mm;3)自编程序二维约束平差的平面坐标结果的最大误差在2.2cm以内,系统偏差为1cm左右,均方根误差(RMS)为1cm左右;4)自编程序高程拟合结果的最大误差在4.5cm以内,系统偏差为2cm左右,均方根误差(RMS)为3cm左右。上述统计数据验证了自编GPS网平差程序算法的正确性和程序设计的合理性,与石油物探测量中广泛采用的商用TGO软件处理结果基本一致,可以满足实际生产的需求。
[Abstract]:The adjustment of GPS (Global Positioning System) measurement control network is used to evaluate the inner coincidence accuracy of GPS net, to find and eliminate the possible gross errors in the GPS baseline vector observations and to obtain the dot coordinates, which plays an important role in the GPS measurement data processing. According to the characteristics of petroleum geophysical survey, this paper studies the data processing flow and algorithm of adjustment in GPS net, and realizes it by programming, which has certain practical value. In this paper, the coordinate system and the basic principle of coordinate transformation in GPS data processing are introduced, and the solution method of GPS baseline is studied. Including: the traditional baseline solution method based on double difference relative positioning and the baseline solution method based on non-differential precise point positioning (precise point positioning,PPP), the theory and related algorithms of GPS engineering control network adjustment are studied emphatically, including the three-dimensional unconstrained adjustment of GPS net. Three dimensional constraint adjustment, two dimensional constraint adjustment and GPS height fitting, using MATLAB language, the basic algorithm of GPS engineering control network adjustment is realized and the corresponding program is worked out. Taking the observation data of CPI GPS control network and GPS control network of petroleum geophysical survey in Jilantai area as an example, the adjustment program of GPS net is verified by comparing and analyzing the processing results with COSAGPS software and TGO software. The results show that the maximum error of the three dimensional unconstrained adjustment results in the three coordinate components of the GPS net adjustment program is within 1.0cm. The system deviation is better than 7mm, the root mean square error (RMS) is better than 7mm / 2) the maximum error in the three coordinate components is within 1.5cm. The system deviation is better than 8 mm, and the root mean square error (RMS) is better than 8.5 mm / 3) the maximum error of the plane coordinate results of 2-D constrained adjustment is within 2.2cm, and the system deviation is about 1cm. The root-mean-square error (RMS) is about 1cm (4) the maximum error of height fitting result is within 4.5cm, the system deviation is about 2cm, and the RMS error (RMS) is about 3cm. The above statistical data verify the correctness of the adjustment program algorithm and the reasonableness of the program design, which are basically consistent with the processing results of commercial TGO software widely used in petroleum geophysical survey, and can meet the needs of actual production.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631;P228.4
本文编号：2213653
[Abstract]:The adjustment of GPS (Global Positioning System) measurement control network is used to evaluate the inner coincidence accuracy of GPS net, to find and eliminate the possible gross errors in the GPS baseline vector observations and to obtain the dot coordinates, which plays an important role in the GPS measurement data processing. According to the characteristics of petroleum geophysical survey, this paper studies the data processing flow and algorithm of adjustment in GPS net, and realizes it by programming, which has certain practical value. In this paper, the coordinate system and the basic principle of coordinate transformation in GPS data processing are introduced, and the solution method of GPS baseline is studied. Including: the traditional baseline solution method based on double difference relative positioning and the baseline solution method based on non-differential precise point positioning (precise point positioning,PPP), the theory and related algorithms of GPS engineering control network adjustment are studied emphatically, including the three-dimensional unconstrained adjustment of GPS net. Three dimensional constraint adjustment, two dimensional constraint adjustment and GPS height fitting, using MATLAB language, the basic algorithm of GPS engineering control network adjustment is realized and the corresponding program is worked out. Taking the observation data of CPI GPS control network and GPS control network of petroleum geophysical survey in Jilantai area as an example, the adjustment program of GPS net is verified by comparing and analyzing the processing results with COSAGPS software and TGO software. The results show that the maximum error of the three dimensional unconstrained adjustment results in the three coordinate components of the GPS net adjustment program is within 1.0cm. The system deviation is better than 7mm, the root mean square error (RMS) is better than 7mm / 2) the maximum error in the three coordinate components is within 1.5cm. The system deviation is better than 8 mm, and the root mean square error (RMS) is better than 8.5 mm / 3) the maximum error of the plane coordinate results of 2-D constrained adjustment is within 2.2cm, and the system deviation is about 1cm. The root-mean-square error (RMS) is about 1cm (4) the maximum error of height fitting result is within 4.5cm, the system deviation is about 2cm, and the RMS error (RMS) is about 3cm. The above statistical data verify the correctness of the adjustment program algorithm and the reasonableness of the program design, which are basically consistent with the processing results of commercial TGO software widely used in petroleum geophysical survey, and can meet the needs of actual production.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631;P228.4
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