基于delta波包疊加的疊前深度偏移
[Abstract]:As a dual expression of Gao Si beam, delta wave packet has good mathematical characteristics in space-time domain. A new method of reflection seismic migration, prestack depth migration based on delta wave packet stack, can be deduced by introducing it into migration field. The new method belongs to ray migration. The Kirchhoff diffraction integral is used for wave field continuation, but the Green's function is reconstructed in the form of delta wave packet stack. Because of the introduction of delta packet, the whole imaging process can be carried out in time domain, which avoids the problem that Gao Si beam offset may encounter in frequency domain. At the same time, the new method still has the advantages of dealing with multi-path time and calculating the amplitude of the caustic region, so it has good imaging ability in the face of complex media. In terms of imaging accuracy, the pre-stack depth migration based on delta wave packet stack can reach the level of Gao Si beam migration, but there is a significant difference in computing speed. In order to improve the computational efficiency, the new method can be studied in depth from two aspects: one is to approximate the convolution operation according to the properties of delta wave packet. It is necessary to calculate the convolution of seismic records (filtered) and delta wave packets when imaging. Because the delta wave packet satisfies the Cauchy distribution, the convolution operation in which the wave packet is involved can be simplified as a product operation, and the computing time is at least 20 shorter. The second is to deduce the fast algorithm by using the steepest descent method. In imaging, the fast algorithm only needs to calculate the delta wave packet with a specific direction of emission, and the computational complexity is greatly reduced. In this paper, four fast algorithms are derived: common shot domain (3) and common offset domain (1). The calculation speed of each algorithm is not the same, but too fast calculation speed can not guarantee the imaging quality, so we can choose a suitable fast algorithm according to the demand. All the above studies are based on cross-correlation imaging conditions. In order to carry out amplitude fidelity migration, the deconvolution imaging conditions based on delta wave packet stack are derived. The stacking profile of deconvolution imaging conditions is more closely related to the formation reflectivity, which is of great significance in seismic interpretation, seismic inversion and velocity analysis.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2017
【分類號】:P631.4
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 ;SPATIAL PATTERN AND FUNCTION OF CORRIDORS IN WETLANDS OF LIAOHE DELTA[J];Chinese Geographical Science;2000年02期
2 何吉?dú)g;A NOTE ON DELTA-PERTURBATION EXPANSION METHOD[J];Applied Mathematics and Mechanics(English Edition);2002年06期
3 ;ANALYSIS OF HABITAT PATTERN CHANGE OF RED-CROWNED CRANES IN THE LIAO HE DELTA USING SPATIAL DIVERSITY INDEX[J];Chinese Geographical Science;2003年02期
4 張純祥,,劉小偉,羅達(dá)玲,李冕豐;MONTE CARLO CALCULATION OF ENERGY DEPOSITION BY DELTA RAYS AROUND ION TRACKS[J];Nuclear Science and Techniques;1994年03期
5 ;DEPOSITIONAL CHARACTER AND SHORELINE CHANGES OF THE NANDUJIANG DELTA,HAINAN ISLAND,CHINA[J];The Journal of Chinese Geography;1994年Z2期
6 ;NUMERICAL SIMULATION OF VORTEX BREAKDOWN ON A DELTA WING AT LOW SPEED[J];Chinese Journal of Aeronautics;1996年04期
7 王資生,馬中玉;EXCITATION OF THE DELTA-BARYON WITH DENSITY DEPENDENCE IN QUASIELASTIC ELECTRON SCATTERING[J];青島大學(xué)學(xué)報(bào)(自然科學(xué)版);1997年02期
8 ;STABILIZATION OF THE YELLOW RIVER CHANNEL AND DEVELOPMENT OF THE DELTA[J];International Journal of Sediment Research;1998年02期
9 袁禮,忻鼎定;COMPARISON OF THE EXPERIMENTAL AND COMPUTATIONAL STUDY ON THE EFFECTS OF VORTEX CONTROL BY DEFLECTING FLAPS ON A HIGHLY SWEPT DELTA WING[J];Chinese Journal of Aeronautics;1998年04期
10 ;RIPPLES IN OVERWATER PLAINS OF THE YELLOW RIVER DELTA[J];Scientia Geologica Sinica;1999年02期
相關(guān)會(huì)議論文 前10條
1 ;Modified Fault Isolation Filter for Networked Control System with Send-on-delta Sampling[A];中國自動(dòng)化學(xué)會(huì)控制理論專業(yè)委員會(huì)B卷[C];2011年
2 Z.Y.Zheng;Z.M.Chen;Y.D.Chen;B.F.Fan;H.Jiang;G.Wang;;Study of Mobility Behavior of Si-Delta-Doped GaN[A];第十二屆全國MOCVD學(xué)術(shù)會(huì)議論文集[C];2012年
3 陳翔;陳訓(xùn);;DELTA系統(tǒng)在杜鵑屬分類研究中的應(yīng)用[A];中國植物學(xué)會(huì)七十五周年年會(huì)論文摘要匯編(1933-2008)[C];2008年
4 Ngai Wong;Tung-Sang Ng;;Roundoff Noise Analysis and Minimization of a Modified Delta Direct-form IIR Structure[A];第十九屆中國控制會(huì)議論文集(一)[C];2000年
5 ;A Study on the impact of sand extraction on riverbed evolution in lower reaches and delta of the Dongjiang River[A];海洋地質(zhì)、礦產(chǎn)資源與環(huán)境學(xué)術(shù)研討會(huì)論文摘要集[C];2006年
6 徐貞仲;何紹求;張旭;;delta-阿片受體透膜性拮抗劑通過抑制受體降解調(diào)節(jié)受體上膜[A];Proceedings of the 7th Biennial Meeting and the 5th Congress of the Chinese Society for Neuroscience[C];2007年
7 李金剛;李佳;鐘彥儒;;一種基于DELTA逆變器的中頻電源波形整形新方法的仿真研究[A];2008中國電工技術(shù)學(xué)會(huì)電力電子學(xué)會(huì)第十一屆學(xué)術(shù)年會(huì)論文摘要集[C];2008年
8 趙博;張旭;;病理?xiàng)l件下速激肽前體表達(dá)變化時(shí)delta-阿片受體分撿和運(yùn)輸?shù)恼{(diào)節(jié)[A];Proceedings of the 7th Biennial Meeting and the 5th Congress of the Chinese Society for Neuroscience[C];2007年
9 李俊青;馮瑞強(qiáng);閆文娟;江建明;楊德鴻;;甲狀旁腺激素經(jīng)磷脂酶C非依賴途徑激活蛋白激酶C和蛋白激酶C-delta[A];中華醫(yī)學(xué)會(huì)第六次全國骨質(zhì)疏松和骨礦鹽疾病學(xué)術(shù)會(huì)議暨中華醫(yī)學(xué)會(huì)骨質(zhì)疏松和骨礦鹽疾病分會(huì)成立十周年論文匯編[C];2011年
10 陳志濤;楊學(xué)林;楊志堅(jiān);張國義;;MOCVD Mn-delta生長GaN:Mn的結(jié)構(gòu)和磁學(xué)性質(zhì)[A];第十六屆全國半導(dǎo)體物理學(xué)術(shù)會(huì)議論文摘要集[C];2007年
相關(guān)重要報(bào)紙文章 前3條
1 海通期貨 胡來兮;期權(quán)獨(dú)有的Delta魅力[N];期貨日報(bào);2014年
2 海通期貨 完顏志翰;Delta風(fēng)險(xiǎn)的對沖[N];期貨日報(bào);2014年
3 楊波;Delta One業(yè)務(wù)的運(yùn)行機(jī)制與風(fēng)險(xiǎn)[N];期貨日報(bào);2014年
相關(guān)博士學(xué)位論文 前4條
1 石秀林;基于delta波包疊加的疊前深度偏移[D];吉林大學(xué);2017年
2 李迪;高性能sigma-delta ADC的設(shè)計(jì)與研究[D];西安電子科技大學(xué);2010年
3 張利敏;基于動(dòng)力學(xué)指標(biāo)的Delta高速并聯(lián)機(jī)械手集成優(yōu)化設(shè)計(jì)方法研究[D];天津大學(xué);2011年
4 張文昌;Delta機(jī)械手視覺控制系統(tǒng)研究與開發(fā)[D];天津大學(xué);2009年
相關(guān)碩士學(xué)位論文 前10條
1 李璇;一類T-S模糊Delta算子系統(tǒng)的研究[D];燕山大學(xué);2015年
2 黃福祥;磁強(qiáng)計(jì)中Sigma-Delta DAC的設(shè)計(jì)[D];哈爾濱工業(yè)大學(xué);2015年
3 徐燦;四階完全前饋結(jié)構(gòu)sigma-delta ADC設(shè)計(jì)[D];電子科技大學(xué);2014年
4 邵鳴;應(yīng)用于sigma-delta ADC的DWA算法的研究與實(shí)現(xiàn)[D];西安電子科技大學(xué);2014年
5 齊春明;廣義Delta算子系統(tǒng)的耗散性研究[D];青島大學(xué);2015年
6 劉琳;廣義Delta算子系統(tǒng)的H_∞性能分析及控制[D];青島大學(xué);2015年
7 童明浩;四自由度Delta并聯(lián)機(jī)械手結(jié)構(gòu)與控制系統(tǒng)研究[D];湖北工業(yè)大學(xué);2016年
8 劉亞男;基于PC的視覺引導(dǎo)DELTA機(jī)械手高速分揀系統(tǒng)設(shè)計(jì)[D];山東大學(xué);2016年
9 范鑫;基于Delta算子的網(wǎng)絡(luò)系統(tǒng)魯棒H_∞濾波[D];鄭州大學(xué);2016年
10 崔光利;Delta并聯(lián)機(jī)構(gòu)運(yùn)動(dòng)控制技術(shù)研究[D];哈爾濱工業(yè)大學(xué);2016年
本文編號:2303131
本文鏈接:http://sikaile.net/kejilunwen/diqiudizhi/2303131.html