基于CORS系统的变形监测方法研究与应用

发布时间：2018-06-23 00:47

本文选题：CORS + 变形监测　；参考：《东北大学》2013年硕士论文

【摘要】：随着GPS技术在变形监测中应用的不断深入,一些国家和地区建立了用于变形监测的GPS连续运行参考站网络或者兼有变形监测作用的GPS连续运行参考站网络综合服务系统(CORS-Continuously Operating Reference Stations)。基于CORS系统进行变形监测主要是利用CORS基准站和变形监测站的实时数据,进行静态基线解算或者进行单历元解算变形信息。常规的监测方法需要监测人员去监测点架设仪器进行观测或者只能进行静态后处理而无法进行实时动态的监测。本文基于以上考虑,设计了基于CORS的实时变形监测系统,并对其中的关键技术进行设计和实现,使监测人员可在第一时间获取监测对象的GPS监测信息。基于CORS的变形监测系统包括基站观测子系统、数据采集子系统、数据传输子系统、数据处理与分析子系统四部分。本文介绍了基准站观测子系统的建立,研究了利用CORS站进行变形监测的静态时段解和单历元实时解两种模型及相应的算法,重点对数据传输和数据采集进行了研究。为了满足变形监测的静态后处理和动态实时处理两种需求,本文设计开发了变形监测数据的实时传输子系统。子系统采用CDMA网络,使用学校的固定IP,使用无线数据终端透明传输模式,实现了监测点和基准点对数据中心的全自动无线实时传输。在数据传输的基础上开发了数据采集子系统,也就是数据解码与编码子系统。数据解码部分实现了将接收机的原始数据转换为ASCII编码的数据,然后从中提取并计算所需要的伪距、载波观测值等数据进行单历元解算。数据编码部分将解码得到的数据编码成RINEX格式的标准文件格式,用来进行静态后处理。基于CORS系统进行变形监测提高了变形监测的稳定性,改善了监测数据的多样性和实时性,提高了变形监测预警系统的可靠性和安全性。
[Abstract]:With the increasing application of GPS technology in deformation monitoring, some countries and regions have established a network of GPS continuous operation reference stations for deformation monitoring or a Corson-Continuously operating reference stations network service system. Deformation monitoring based on cors system is mainly based on the real-time data of the cors datum station and deformation monitoring station to calculate the static baseline or the deformation information of single epoch. Conventional monitoring methods require monitoring personnel to set up instruments to monitor points for observation or can only carry out static post-processing but can not carry out real-time and dynamic monitoring. Based on the above considerations, the real-time deformation monitoring system based on cors is designed in this paper, and the key technology is designed and implemented, so that the monitoring personnel can obtain GPS monitoring information of the monitoring object in the first time. The deformation monitoring system based on cors includes base station observation subsystem, data acquisition subsystem, data transmission subsystem, data processing and analysis subsystem. This paper introduces the establishment of observation subsystem of reference station, studies two models and corresponding algorithms of static time solution and single epoch real-time solution for deformation monitoring by using cors station, and focuses on data transmission and data acquisition. In order to meet the requirements of static post-processing and dynamic real-time processing of deformation monitoring, a real-time transmission subsystem of deformation monitoring data is designed and developed in this paper. The subsystem adopts CDMA network, uses the fixed IPs of the school, and uses the transparent transmission mode of wireless data terminal to realize the automatic wireless real-time transmission between the monitoring point and the datum point to the data center. On the basis of data transmission, a data acquisition subsystem is developed, that is, data decoding and coding subsystem. In the part of data decoding, the original data of the receiver is converted into ASCII coded data, and then the required pseudo-range, carrier observations and other data are extracted and calculated for single epoch calculation. The data encoding part encodes the decoded data into a standard file format in RINEX format, which is used for static post processing. Deformation monitoring based on cors system improves the stability of deformation monitoring, improves the diversity and real-time of monitoring data, and improves the reliability and security of deformation monitoring and early warning system.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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