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基于迭代思想的水分时域反射仪(TDR)参数标定
Alternative TitleParameters Calibration of Time Domain Reflectometry(TDR) Based on Iterative Algorithm
刘云霞1,2; 高鹏程1; 雷文娟2; 关卓2; 唐翔宇2
Corresponding Author刘云霞
2015
Source Publication灌溉排水学报
ISSN1672-3317
Volume34Issue:5Pages:79-84
Abstract

以烘干法测定的含水率标定Topp公式4个参数的初始值,再通过“拟合参数-实验校正”过程对Topp公式的4个参数进行二次迭代修正。结果表明,①迭代过程是一个模型参数优化的过程,表现为模型的赤池信息量准则(AIC)随迭代次数的增加而减小,而模型拟合的相关系数随着迭代次数的增加逐渐趋近于1;②TDR的测量数据误差随着迭代次数的增加而减小,一次迭代后误差平均为8.10%,二次迭代后降为5.05%。

Other Abstract

The iterative thinking was used to calibrate the parameters of time domain reflectometry(TDR),in which the initial four parameters of Topp equation were determined by the water content observed by drying method and then four parameters were amended through the“fitting parameters-experimental calibration” procedure based on iterative algorithm.The results showed that:①The iterative process was an parameter optimization process for Topp model,which was demonstrated by that Akaike Information Criterion(AIC)decreased with the increase of the number of iterations,and correlation coefficient of model fitting increased gradually to 1;②Error of TDR decreased sharply with the increase of iteration numbers,which was 8.10%and 5.05%after the first and the second iteration respectively.

KeywordTdr 参数标定 迭代思路 Topp公式
DOI10.13522/j.cnki.ggps.2015.05.016
Indexed ByCSCD
Language中文
CSCD IDCSCD:5448300
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18091
Collection山地表生过程与生态调控重点实验室
Affiliation1.西北农林科技大学
2.中国科学院水利部成都山地灾害与环境研究所
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
刘云霞,高鹏程,雷文娟,等. 基于迭代思想的水分时域反射仪(TDR)参数标定[J]. 灌溉排水学报,2015,34(5):79-84.
APA 刘云霞,高鹏程,雷文娟,关卓,&唐翔宇.(2015).基于迭代思想的水分时域反射仪(TDR)参数标定.灌溉排水学报,34(5),79-84.
MLA 刘云霞,et al."基于迭代思想的水分时域反射仪(TDR)参数标定".灌溉排水学报 34.5(2015):79-84.
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