基于灰主成分分析法的变形信息提取研究  

Research on the extraction of deformation information with gray principal component analysis

作　　者：张拯[1] 张献州[2,3] 罗保林[2,3] 刘伟[4,5] 吴开岩 ZHANG Zheng;ZHANG Xianzhou;LUO Baolin;LIU Wei;WU Kaiyan(China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China;Faculty of Geoscience and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China;State-province Joint Engineering Laboratory of Spatial Information Technology for High-Speed Railway Safety, Chengdu 610031, China;Primeton Information Technology Co., Ltd., Shanghai 201203, China;School of Software, Xidian University, Xi’an 710071, China)

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610031 [2]西南交通大学地球科学与环境工程学院,四川成都610031 [3]高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都610031 [4]普元信息技术股份有限公司,上海201203 [5]西安电子科技大学软件学院,陕西西安710071

出　　处：《铁道科学与工程学报》2017年第7期1369-1375,共7页Journal of Railway Science and Engineering

摘　　要：基于液体静力水准仪系统应用于高铁实时沉降监测时,受施工机械振动,往来列车振动和温度气压变化等因素的影响,其测量结果存在系统性漂移和随机波动。因而,与同步进行的二等水准测量成果之间存在一定差异。在系统研究PCA原理及数学模型的基础上,针对PCA应用于时序变形信息提取的不足,将灰色系统思想引入到PCA中,构建GPCA模型,对PCA中基本特征向量进行改进,进而实现时序变形信息的提取。There might be some systematic drift and random fluctuation in the results of hydrostatic leveling instruments applied to high-speed railway's real-time subsidence monitoring due to mechanical vibration,current train vibration,temperature,and air pressure changes.Therefore,there is some differences between the results of hydrostatic levelling instruments and those of the second-class leveling.Based on the PCA's theory and the mathematical model,the grey system theory was introduced to improve PCA to form the GPCA(Grey Principle Component Analysis),where the basis feature vectors were improved in order to get a good effect on sequential deformation information extraction.

关 键 词：GPCA PCA 变形信息提取 灰色系统 液体静力水准仪 准确性 

分 类 号：P258[天文地球—测绘科学与技术]