重力异常小波多分辨分析分解阶次的确定-地球科学.PDF

32 4 ——— Vol.32　No.4 2 0 0 7 7 Earth Science— Journal of China University of Geosciences July 　 2 0 0 7 1 1 2 刁　博, 王家林 , 程顺有 1.同济大学海洋地质教育部重点实验室, 上海 200092 2.西北大学大陆动力学教育部重点实验室, 陕西西安 710069 :., 、, , ., bior3.5 , 5 , , 6 . , 5 , . , , . :;;;. :P631.1　　　　:1000-2383(2007)04-0564-05　　　　:2006- 12-31 The Confirmation of Decomposition Level in Wavelet Multi-Resolution Analysis for Gravity Anomalies 1 1 2 DIAO Bo , WANG Jia-lin , CHENG Shun-you 1.Key Laboratory of Marine Geology of the Minsitry of Education, Tongj i University , Shanghai 200092, China 2.K ey Laboratory of Continental Dynamics of the Minsitry of Education, North est University, X i′an 710069, China Abstract:How to confir the deco position level is a basic issue in wavelet ulti-resolution analysis for gravity ano alies. In this paper, the relations between the deco position level and the length of signal, and the relations between the deco po- sition level and the support width of other wavelets are discussed.Based on the co parison between the result of wavelet ulti-resolution analysis for Bouger gravity ano alies in Tari basin and Tianshan orogenic belt and the fearures of corre- sponding geoid ano aly, the authors proposed a ethod for confir ing the deco position level.Using bior3.5 wavelet, the 5th level detail can avoid the interference of wavelet generating functions and thereby its result accords with the features of corresponding geoid ano aly.However, there are any differences between the 6th and its corresponding geoid ano aly. Therefore, in ter s of signal processing and geophysics theory, the proper deco position le