GPS-RTK小区域测量精度研究

发布时间：2018-05-31 15:31

本文选题：GPSRTK + 内符合精度　；参考：《西安科技大学》2013年硕士论文

【摘要】：GPSRTK具有用途广、定位精度较高、自动化程度高、全天候作业等优点,已在测绘领域中得到广泛应用。目前，测绘界对于RTK测量精度和测量误差处理尚未形成统一的、量化的理论。由于RTK测量中常缺少必要的检核条件，使得测量成果的可靠性较差。在小区域RTK测量中，如何检验测量成果可靠性及提高测量定位的精度，已成为工程测量技术研究的重要课题。本文针对小区域内RTK测量定位的精度和可靠性问题展开分析与研究，提出了RTK定位精度的检测方法，通过对RTK测量实验数据的内符合精度检测，，分析了RTK在小区域工程测量中实现高精度定位的技术可行性。在小区域内RTK测量精度受转换参数的影响显著。本文对小区域RTK测量求解转换参数的模型进行分析，通过实验结果检验了转换参数对于RTK测量精度的影响，提出了三种处理转换参数以提高RTK测量精度的方法：（1）对求解RTK坐标转换参数过程加以改进。并通过实例证实，在小区域内改进参数转换过程能有效提高RTK定位精度。（2）在假设参与求解转换参数的已知公共点含有误差的情况下，利用RTK测量点位误差的微分表达式，分析了已知公共点固有误差对RTK测量精度的影响，通过实例对已知公共点进行检核，以改进RTK测量的精度。（3）将多个公共点参与转换参数的求解，逐个剔除每次计算后的较大残差点，最终筛选出残差最小的一组公共点来计算该区域转换参数的最优解。本文探讨了RTK测量误差的处理方法，尝试对RTK测量偏差与测量过程中的 HRMS、VRMS、卫星数、GDOP、距基准站距离等多个参数进行回归分析，得到RTK测量误差处理的经验公式，为小区域内RTK测量的误差处理提供了一种方法，对于GPS工程测量应用具有参考价值。
[Abstract]:GPSRTK has many advantages, such as wide use, high positioning precision, high automation, all-weather operation and so on. It has been widely used in the field of Surveying and mapping. At present, the surveying circle has not yet formed a unified and quantitative theory for the measurement accuracy and measurement error of RTK. Because of the lack of necessary checking conditions in RTK measurement, the measurement results are reliable. In the small area RTK measurement, how to test the reliability of measurement results and improve the accuracy of measurement positioning has become an important topic in engineering survey technology research.
Based on the analysis and research of the accuracy and reliability of RTK measurement and positioning in the small area, this paper puts forward the detection method of RTK positioning precision, and analyzes the technical feasibility of the high precision positioning of the RTK in the residential area engineering measurement through the internal accuracy detection of the experimental data of RTK measurement. The RTK measurement precision is transferred in the district domain. The effect of parameter change is significant. In this paper, RTK transform in small area is solved.
The model of changing parameters is analyzed. Through experimental results, the influence of conversion parameters on RTK measurement accuracy is tested. Three methods of processing conversion parameters to improve the accuracy of RTK measurement are proposed. (1) improving the parameter process of solving RTK coordinate transformation.
The number conversion process can effectively improve the positioning accuracy of RTK. (2) assuming that the known common points involved in solving conversion parameters contain errors, RTK measurement points are used.
The differential expression of the error is used to analyze the influence of the known common point inherent error on the accuracy of RTK measurement. Through an example, the known common points are checked to improve the accuracy of the RTK measurement. (3) multiple common points are involved in the solution of the conversion parameters and the larger residual points after each calculation are eliminated one by one.
A group of common points which have the smallest residuals are selected to calculate the optimal solution of the conversion parameters in the region. This paper discusses the processing method of RTK measurement error and tries to measure the deviation and measurement of RTK.
HRMS, VRMS, satellite number, GDOP, and the distance from the distance from the base station are analyzed by regression analysis. The empirical formula for the error processing of RTK measurement is obtained. It provides a method for the error treatment of RTK measurement in the small area, and is of reference value for the application of GPS engineering measurement.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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