沉降监测网稳定基准点自动搜索方法研究  

Method of Automatic Searching for Steady Datum Points of Settlement Monitoring Network

作　　者：刘为民[1] 李明峰[1] 桂仁 王波[1] LIU Wei-min LI Ming-feng GUI Ren WANG Bo(College of Geomaties Science and Technology, Nanjing Tech University, Nanjing Jiangsu 211816,China)

机构地区：[1]南京工业大学测绘科学与技术学院,江苏南京211816

出　　处：《现代测绘》2017年第1期26-28,共3页Modern Surveying and Mapping

基　　金：国家自然科学基金项目(41274009)

摘　　要：工程建设的整个周期都需要通过变形监测来掌握变形体的变形情况,以便及时发现问题,保证工程的安全性。监测网的稳定性分析是变形监测的基本前提和重要内容,基准点是监测网的起算依据,若使用错误的基准会导致整个监测网数据不可靠。针对沉降监测采用不同稳定点作为起算基准导致观测点数据失真的情况及传统沉降监测网稳定性分析方法迭代次数多、解算效率低的现状,探讨了沉降监测网基准点稳定性整体评价与逐点检验方法,提出了稳定基准点自动搜索方法,并以MATLAB为开发环境设计了稳定基准点自动搜索的程序算法,最后结合工程实例验证了自动搜索方法的高效率及有效性。During the whole period of the engineering construction, it is necessary to master the deformation condition of the deformable body through the deformation monitoring in order to find the problem in time and ensure the safety of the project. The stability analysis of monitoring network is an important content and basic premise in deformation monitoring. The datum point provides the basis of calculation for monitoring network. The whole data of monitoring network shall be unreliable because of the erroneous datum point. With the problems of the distortion of the observation caused by the unstable datum points in settlement monitoring combined with the present situation that the traditional method of the stability analysis of settlement monitoring network has many iterations and low computing efficiency taken into account, it discussed both the overall evaluation of stability of datum points and the point-by-point hypothesis test are discussed. The method of automatic searching for steady datum points is set up then. Moreover, the program algorithm of automatic search of stable datum point is designed by MATLAB. Finally, the efficiency and effectiveness of the method is illustrated through an example..

关 键 词：沉降监测 基准点 秩亏自由网平差 平均间隙法 假设检验 

分 类 号：P258[天文地球—测绘科学与技术]