%0 Journal Article
%T INVERSION OF FIELD DISTRIBUTION PARAMETERS BY ACOUSTIC TOMOGRAPHY<br>场分布参数的声波层析成像反演
%A SONG Lei
%A HUANG Jia-hui
%A YANG Wei-hao
%A WANG Yan-sen
%A YANG Zhi-jiang
%A CHEN Xian-de
%A <br>宋 雷
%A 黄家会
%A 杨维好
%A 王衍森
%A 杨芷江
%A 陈先德
%J 岩石力学与工程学报
%D 2005
%I 
%X Field distribution parameters (FDP),such as temperature,seepage and stress,are important in civil engineering. It is important to obtain the parameters by inversion of field measurement. According to the relationship between the parameters and acoustic velocity,field distribution parameters can be determined by acoustic velocity distribution which can be calculated by acoustic computer tomography (ACT). Considering of the characteristics of filed parameters distribution,smoothing operator (SO) is proposed in SIRT iterative process of ACT. SO is derived from the corresponding partial differential equation that introduces the contribution of adjacent cells into SIRT process and improves the inversion accuracy obviously. At last an example of frozen temperature field inversion is given to illustrate the effectiveness of the method.
%K geotechnical engineering
%K field distribution parameter (FDP)
%K acoustic computer tomography (ACT)
%K smoothing operator (SO)<br>岩土工程
%K 场分布参数
%K 层析成像
%K 平滑算子
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=59C2E14FF00FD006&yid=2DD7160C83D0ACED&vid=B91E8C6D6FE990DB&iid=9CF7A0430CBB2DFD&sid=209749DE0D716184&eid=1593278DEEDA4D8F&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=1&reference_num=19