【作者】 汪新；

【导师】 黄丁发； 王国祥；

【作者基本信息】 西南交通大学 ， 测绘工程， 2013， 硕士

【摘要】 对变形体进行监测是为了有效监视变形体的位移情况,并且通过不间断的、长期的重复测量跟踪监测目标,保证工程的安全性和可靠性,意义重大。近年来,GPS技术的应用得到迅猛发展,作为一种新的空间定位模式,在诸多领域,尤其是测量领域,取代传统的电子测量方法和光学测量方法。GPS变形监测的发展能够带来直接的经济效益,有效减轻测量工作的工作强度,极大提高工作效率。但前提是必须处理好GPS本身获取的数据和变形监测数据序列之间的关系,真正意义满足形变目标监测的需要。基于GPS技术的变形监测数据的处理与分析的具有较大的实际研究意义,特进行了本课题的研究。本文详细介绍了GPS变形监测数据处理技术,并比较了监测数据处理技术的优劣优缺点,指出其中存在的问题。本文详细分析了GPS技术在测量过程中产生误差的原因和影响规律,同时给出了减少误差的各种方法,在此基础上,设计出GPS测量技术应用于变形监测的作业模式,给出分析结果。作为一种高性能的信号分析方法,小波分析方法是小波理论的应用示例,GPS变形监测的数据处理当中,本文详细研究强噪声背景下有用信号的提取,同时结合地壳变形监测为例,从粗差的探测及数据去噪等对测实测数据进行处理,取得了满意效果,验证了变形监测数据处理的可靠性与可行性。更多还原

【Abstract】 Deformation monitoring is targeted to monitor the displacement, with continuous, long-term repeated measurement tracking monitoring target,to ensure the engineering safety and reliability, which is of great significance. In recent years, the application of GPS technology gets swift and great development. As a new spatial positioning technology, it has replaced the traditional electronic measuring methodes and optical measuring methodes in many fields, especially in surveying field. The development of GPS deformation monitoring can bring economic benefits directly, reduce the surveying work intensity effectively, and improve the working efficiently. But the precondition is that the GPS data must be handled correctly, and the deformation information also should be analyzed correctly, to meet the needed objectives of true meaning of deformation monitoring. Deformation monitoring with GPS technology and the monitoring data processing is studied in this paper, as it is of great significance.This paper introduces the GPS deformation monitoring data processing technology, and compares the advantages and disadvantages of monitoring data processing technologies, and the existing problems are also pointed out. This paper gives a detailed analysis of GPS technology in the processing of measurement error, and it also further figures out the corresponding error reducing methods. On this basis, operation mode of GPS technology in deformation monitoring is designed, and the results of the analysis is also studied.As a high performance signal analysis method, wavelet analysis method is the application of wavelet theory in GPS deformation monitoring data processing. This paper studies the noise character under the strong background, and the extraction of useful signal, combined with the crustal deformation monitoring. From the gross error detection and outlier detection, the experimental GPS data is tested, the approving effect is obtained, and reliability and feasibility of the processing of deformation monitoring data are also verified.更多还原