水利学报2017，Vol.48Issue(5)：560-567,8.DOI:10.13243/j.cnki.slxb.20160532
基于总体最小二乘法的系统响应修正方法
A new version of system response method for error correction based on total least squares
摘要
Abstract
To improve the accuracy of real-time flood forecasting,a new version of system response method which is based on total least squares is proposed.Original system response method involves a least squares problem suited for problems in which the observed value is known approximately but fails to determine the error in system response matrix.We analyze the system response method and apply total least squares to consider the perturbation in both system response matrix and the observation.It is necessary to use ridge estimation to stabilize the solution for ill-posed system response matrix.The improved correction method has been adopted in Qilijie basin to update the estimates of soil moisture content and the improved method is compared with the original method.Both of the methods can lead to better accuracy.The new version of system response method leads to better and more stable performance than the original method.关键词
洪水预报/误差修正/系统响应方法/总体最小二乘平差/新安江模型Key words
flood forecasting/error correction/system response method/total least squares/Xinanjiang (XAJ) model分类
天文与地球科学引用本文复制引用
包为民,孙逸群,周俊伟,司伟,张乾,程翔..基于总体最小二乘法的系统响应修正方法[J].水利学报,2017,48(5):560-567,8.基金项目
国家重点研发计划专项经费资助项目(2016YFC0402700) （2016YFC0402700）
国家自然科学基金面上基金项目(51479062,41371048) （51479062,41371048）
中央高校基本科研业务费专项资金资助项目(2015B14314) （2015B14314）
