国产日韩欧美一区二区三区三州_亚洲少妇熟女av_久久久久亚洲av国产精品_波多野结衣网站一区二区_亚洲欧美色片在线91_国产亚洲精品精品国产优播av_日本一区二区三区波多野结衣 _久久国产av不卡

?

一種修正的Tikhonov方法求解Helmholtz方程柯西問(wèn)題

2023-07-28 03:27:16余亞輝李振平
關(guān)鍵詞:柯西后驗(yàn)先驗(yàn)

余亞輝 李振平

摘要:考慮矩形區(qū)域上Helmholtz方程柯西問(wèn)題,該問(wèn)題是一類(lèi)嚴(yán)重不適定的偏微分方程反問(wèn)題,它的解不連續(xù)依賴于輸入數(shù)據(jù).使用修正的Tikhonov正則化方法給出了該問(wèn)題基于分離變量的近似解,并通過(guò)先驗(yàn)和后驗(yàn)兩種不同的正則化參數(shù)選擇規(guī)則得到了精確解與正則化近似解之間的Hlder型誤差估計(jì).

關(guān)鍵詞:Helmholtz方程柯西問(wèn)題;不適定問(wèn)題;正則化;后驗(yàn)參數(shù)選取;誤差估計(jì)

中圖分類(lèi)號(hào):O 175 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1001-988Ⅹ(2023)04-0029-06

4 結(jié)束語(yǔ)

本文使用一種修正的Tikhonov方法求解矩形區(qū)域上的Helmholtz方程柯西問(wèn)題,不僅給出正則化參數(shù)的先驗(yàn)選取下精確解與正則化近似解之間的Hlder型誤差估計(jì),還給出了正則化參數(shù)后驗(yàn)選取規(guī)則及誤差估計(jì).該方法可能也適用于其他不適定的反問(wèn)題,這也有待于我們進(jìn)一步探究.

參考文獻(xiàn):

[1] CHEN J T,WONG F C.Dual formulation of multiple reciprocity method for the acoustic mode of a cavity with a thin partition[J].J Sound Vib,1998,217(1):75.

[2] HALL W S,MAO X Q.Boundary element investigation of irregular frequencies in electromagnetic scattering[J].Eng Anal Bound Elem,1995,16(3):245.

[3] ISAKOV V.Inverse Problems for Partial Differential Equations[M].New York:Springer-Verlag,1998.

[4] REGISKA T,REGISKI K.Approximate solution of a Cauchy problem for the Helmholtz equation[J].Inverse Prob,2006,22:975.

[5] ZHANG Yuan-xiang,F(xiàn)U Chu-li,DENG Zhi-liang.An a posteriori truncation method for some Cauchy problems associated with Helmholtz-type equations[J].Inverse Prob Sci Eng,2013,21:1151.

[6] FU Chu-li,F(xiàn)ENG Xiao-li,QIAN Zhi.The Fourier regularization for solving the Cauchy problem for the Helmholtz equation[J].Appl Numer Math,2009,59:2625.

[7] QIN Hai-hua,WEI Ting.Two regularization methods for the Cauchy problems of the Helmholtz equation[J].Appl Math Model,2010,34:947.

[8] QIN Hai-hua,WEI Ting.Modified regularization method for the Cauchy problem of the Helmholtz equation[J].Appl Math Model,2009,33:2334.

[9] QIAN Ai-lin,XIONG Xiang-tuan,WU Yu-jiang.On a quasi-reversibility regularization method for a Cauchy problem of the Helmholtz equation[J].J Comput Appl Math,2010,233:1969.

[10] XIONG Xiang-tuan.A regularization method for a Cauchy problem of the Helmholtz equation[J].J Comput Appl Math,2010,233:1723.

[11] FENG Xiao-li,F(xiàn)U Chu-li,CHENG Hao.A regularization method for solving the Cauchy problem for the Helmholtz equation[J].Appl Math Model,2011,35:3301.

[12] XIONG Xiang-tuan,F(xiàn)U Chu-li.Two approximate methods of a Cauchy problem for the Helmholtz equation[J].Comput Appl Math,2007,26:285.

[13] LI Zhen-ping,XU Chao,LAN Man,et al.A mollification method for a Cauchy problem for the Helmholtz equation[J].Int J Comput Math,2018,95(11):2256.

[14] HE Shang-qin,DI Cong-na,LI Yang.The mollification method based on a modified operator to the ill-posed problem for 3D Helmholtz equation with mixed boundary[J].Appl Numer Math,2021,160:422.

[15] XIONG Xiang-tuan,ZHAO Xiao-chen,WANG Jun-xia.Spectral Galerkin method and its application to a Cauchy problem of Helmholtz equation[J].Numer Algor,2013,63:691.

[16] QIAN Zhi,F(xiàn)ENG Xiao-li.A fractional Tikhonov method for solving a Cauchy problem of Helmholtz equation[J].Applicable Analysis,2017,96(10):1656.

[17] 熊向團(tuán),任麗婷.一種修正的Tikhonov方法求解拉普拉斯方程的柯西問(wèn)題[J].西北師范大學(xué)學(xué)報(bào)(自然科學(xué)版),2018,54(5):1.

[18] TIKHONOV A N,ARSENIN V Y.Solutions of Ill-posed Problems[M].Washington DC:Winston and Sons,1977.

(責(zé)任編輯 馬宇鴻)

猜你喜歡
柯西后驗(yàn)先驗(yàn)
柯西積分判別法與比較原理的應(yīng)用
柯西不等式在解題中的應(yīng)用
柯西不等式的變形及應(yīng)用
基于對(duì)偶理論的橢圓變分不等式的后驗(yàn)誤差分析(英)
基于無(wú)噪圖像塊先驗(yàn)的MRI低秩分解去噪算法研究
貝葉斯統(tǒng)計(jì)中單參數(shù)后驗(yàn)分布的精確計(jì)算方法
基于自適應(yīng)塊組割先驗(yàn)的噪聲圖像超分辨率重建
柯西不等式的應(yīng)用
一種基于最大后驗(yàn)框架的聚類(lèi)分析多基線干涉SAR高度重建算法
基于平滑先驗(yàn)法的被動(dòng)聲信號(hào)趨勢(shì)項(xiàng)消除
通州区| 连平县| 鄂托克前旗| 赤城县| 和政县| 鹤峰县| 萨嘎县| 依安县| 达尔| 蓝山县| 霍林郭勒市| 从江县| 集安市| 新野县| 庆阳市| 锦州市| 黄浦区| 从江县| 渝中区| 岳普湖县| 聊城市| 会昌县| 肇州县| 石家庄市| 集安市| 江华| 团风县| 桦川县| 加查县| 新乡市| 元氏县| 永寿县| 汝南县| 平遥县| 利津县| 广河县| 白城市| 南昌县| 永丰县| 马鞍山市| 醴陵市|