【作者】 隋立芬；

【导师】 许其凤；

【作者基本信息】 解放军信息工程大学 ， 大地测量学与测量工程， 2001， 博士

【摘要】 本文系统地研究了高精度GPS网的统一与数据处理的理论与方法，针对高精度GPS网联合处理中的平差方法与参考基准、全球IGS基准站的使用、高精度GPS网联合平差的函数模型和随机模型的建立、各GPS子网与高精度GPS网的联测、观测历元之间的地壳运动和形变、联合平差中系统参数和地壳运动参数的设置等问题，展开了较深入的研究。主要内容如下： 1、提出了全国GPS网与中国地壳运动观测网络联测的设计思想。并完成了全国GPS一、二级网与中国地壳运动观测网络联测的技术设计方案。 2、系统地讨论了高精度GPS网数据处理的平差方法及理论背景，分析了各种平差方法所对应基准的意义，推导了基于不同基准、不同历元平差结果之间的转换公式。 3、提出了基于Bayes理论的GPS数据处理方法，推导了相应的参数估值公式及其验后协方差估值公式。 4、针对高精度GPS数据处理中的基准站选取、基准站坐标的约束及基准站坐标加权不当对平差结果的影响等问题进行了较系统的研究。提出了基准站选取的一般原则及合理确定基准站坐标权的有效方法。 5、建立了同时顾及坐标框架系统参数和地壳运动参数的GPS网联合平差模型。使用该模型可使块体的运动参数与全网的坐标转换参数相分离，从而提高所求坐标转换参数的精度和可靠性。并用多组GPS联测数据进行了试算，验证了所建模型的可靠性。 6、使用所建模型，利用全国GPS一、二级网联测数据和全国GPS二级网与中国地壳运动观测网络联测数据研究了中国大陆现今构造块体相对运动特征。 7、用应变分析理论研究了由于地壳运动引起的板块内部变形问题。并用大量GPS实测数据，对中国大陆地壳运动应变场进行了分析与讨论。 8、推导了应变参数的抗差估计解式，以及观测误差对各类解的误差影响函数。 9、研究了不同历元、不同基准的多个GPS网联合平差中的随机模型和函数模型的建立方法。 10、提出了同时顾及块体运动参数和块体内部应变参数的GPS网联合平差模型，讨论了系统参数的假设检验方法。更多还原

【Abstract】 This dissertation systematically investigates the unification of high-precision GPS networks and the theory and methodology of its data processing. The following problems are discussed: GDReference datum and adjustment methods on the unification of high-precision GPS networks, tilization of the global IGS stations in unification, ormulations of the adjustment model on the high-precision GPS combined adjustment, @~Combinations between the local GPS networks and the crustal movement observation network of China, (~)Crustal movement and deformation between the different observation epochs, ゛nd Choice of systematical parameters on the combined adjustment. In detail, the main content of the dissertation includes:The design ideas of combined observations on the local 01 networks and the crustal movement observation network of China are presented. The technical design scheme of combined observations on the first order and second order 01 networks and the crustal movement observation network of China has been performed.Adjustment methodologies and their theoretical backgroud on the high precision GPS networks are systematically investigated. The implication of corresponding datum for various adjustment methods is analyzed. The transformation formulas based on different datum and different epochs are derived and formulated.The GPS data processing method based on Bayes theory is presented. Bayesian estimates of the model parameters as well as their posterior covariance estimation formulas are derived.The systematical investigates onhe choice of reference station in the high-precision GPS data processing, the coordinate constraint of reference station and the effect of incorrect weights to adjustment results are made. Some general principles on the choice of reference station and some effective methods on choosing weights in adjustment are presented.The adjustment model for combined GPS networks considering systematical parameters for the coordinates frames and parameters for the crustal movement is established. In terms of this model, parameters for the plate motion and for coordinates transformation can be separated. Therefore, the precision and reliability of parameters for coordinates transformation can be improved.In terms of the theory of strain analysis, the inner deformations of plates caused by the crustal movement are studied. The robust estimator for strain parameters as well as the influence function of observation errors to solutions is derived and formulated. The strain field of the crustal movement for China mainland is analyzed and discussed by the plentiful real GPS observation data.更多还原