地震信号高精度谱分解方法综述  

SUMMARY OF THE HIGH PRECISION SPECTRUM DECOMPOSITION METHOD OF SEISMIC SIGNAL

作　　者：张宇 康建红[2] 庞晶源[2] 刘灏[2] 

机构地区：[1]长春地震台,吉林长春130117 [2]吉林省地震局,吉林长春130117

出　　处：《防灾减灾学报》2014年第1期91-95,共5页Journal of Disaster Prevention And Reduction

基　　金：区域地震前兆台站运行状态监控平台(XH13006Y)

摘　　要：系统的总结了时频分析的原理,对常用信号时频分析方法进行了对比研究。谱分解的算法主要研究了Hilbert变换、S-变换、小波变换、Gabor变换、HHT、匹配追踪等。系统的介绍了每种方法的原理,理论上的优势和短处。做了详细的模拟信号对比试验,从不同的侧面展示每种方法得到频谱图,对比总结。较为直观的,全面的应用。通过反复调试,验证每个参数在时、频域中不同的作用。The principle of time-frequency Analysis is elaborated detailedly , The common methods of time-frequency analysis are comparatively analyzed. The algorithms of spectral decomposition are studied , including Hilbert transform, S-transform, wavelet transform, Gabor transform, HHT, and matching pursuit, etc. The principles, advantages and shortcomings of each method are introduced in details. Contrast tests of analog signals have been done , Every frequency spectrum image is showed from different sides. The functions of every parameter in time and frequency domains are verified through debugging.

关 键 词：谱分解 HILBERT变换 S-变换 小波变换 匹配追踪 

分 类 号：P315.63[天文地球—地震学]