城市地噪声场的多元分离方法  

Multivariate Separation of Urban Ground Noise

作　　者：秦维秉 张双喜[1,2] 李孟奎[1] 张煜[1] 张晨[1] 张朝玉[1] 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]武汉大学地球空间环境与大地测量教育部重点实验室,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2016年第12期1690-1695,共6页Geomatics and Information Science of Wuhan University

基　　金：国家973计划(2013CB733303);中央高校基本科研业务费专项(2012214020205);地球空间环境与大地测量教育部重点实验室开放基金(12-02-08);2013年度武汉市属开发型科研单位单位专项(2013BJ002)~~

摘　　要：城市地下噪声场由自然地噪声和人文地噪声组成,人文地噪声和自然地噪声的差异主要表现在时空分布的一致性、稳定性和相关性等方面。针对两者的不同特征,提出了噪声分离的三原则,采用多元分离的方法,实现了两类地噪声的有效分离。通过对比测试4种标准信号并进行分析,可得出该方法效果好于传统的小波方法的结论。深圳市地噪声场的探测试验表明,多元分离方法能够把地噪声有效分离成人文地噪声和自然地噪声两部分,它们可以分别提炼出地下地质信息。An urban ground noise field is made up of natural ground noise and cultural ground noise with different temporal and spatial distribution characteristics.In general,the natural ground noise satisfies three features of consistency,stability,and correlation with cultural ground noise appearing as non conformance,instability,and non correlation.Referring to their different characteristics,this paper proposed three principles on the urban ground noise separation and presents a improved method of multivariate separation to effectively separate the two types of noisy fields.We tested four types of standard signals and the results demonstrated superiority of multivariate separation.In addition,exploratory experiments in Shenzhen indicate that the proposed method of multivariate separation can divide urban ground noise signal effectively into two parts,and can be refined underground geological information.By separating the underground noise,we can quantitatively compare the noise level of natural ground noise and cultural ground noise.

关 键 词：城市地噪声 自然地噪声 人文地噪声 多元分离技术 小波分解 

分 类 号：P207[天文地球—测绘科学与技术] P315.4