GPS变形监测数据处理方法的研究

发布时间：2018-07-03 18:05

本文选题：GPS变形监测 + 小波分析　；参考：《西南交通大学》2013年硕士论文

【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。
[Abstract]:The purpose of monitoring deformable bodies is to monitor the displacement of deformable bodies effectively, and to ensure the safety and reliability of engineering by continuous and long-term repeated measurements to track the monitoring targets. In recent years, the application of GPS technology has been developed rapidly, as a new spatial positioning mode, in many fields, especially in the field of measurement, The development of GPS deformation monitoring instead of traditional electronic and optical measurement methods can bring direct economic benefits, effectively reduce the work intensity of the measurement work, and greatly improve the working efficiency. However, it is necessary to deal with the relationship between the data acquired by GPS and the deformation monitoring data sequence, and the real significance is to meet the needs of deformation target monitoring. The processing and analysis of deformation monitoring data based on GPS technology is of great practical significance. This paper introduces the GPS deformation monitoring data processing technology in detail, compares the merits and demerits of the GPS deformation monitoring data processing technology, and points out the existing problems. In this paper, the causes and influence rules of GPS errors in the measurement process are analyzed in detail. At the same time, various methods to reduce errors are given. On the basis of this, the operation mode of GPS measurement technology applied to deformation monitoring is designed. The analysis results are given. As a high performance signal analysis method, wavelet analysis method is an example of the application of wavelet theory in GPS deformation monitoring data processing. In this paper, the extraction of useful signals under strong noise background is studied in detail, and the crustal deformation monitoring is taken as an example. The processing of measured data from gross error detection and data denoising has achieved satisfactory results and verified the reliability and feasibility of deformation monitoring data processing.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;P227

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