velocity inversion 中文意思是什麼
velocity inversion
解釋
速度反常-
Different algorithms were compared in the numerical simulation and model experiment of concrete velocity inversion the results showed that, compared with the least - square solutions and the damped least - square solutions, the damped and natural weighted least - square solutions reflected the inner defections of the tested object more reliably and exactly due to the usage of correct priori information, which benefited the suppression of noises and made the iterations of inverse stable and convergent
結果表明，相對于最小二乘法和阻尼最小二乘法，基於自然權的加權阻尼最小二乘演算法，由於利用了正確的先驗信息，不但使反演過程收斂，而且具有數值穩定、抗噪能力強的優點，其成像結果能真實有效地反映對象內部缺陷，因此更適用於混凝土的超聲波速度反演。 -
Compared with straight ray tracing, inversion of bending ray tracing is better when data of test are accurate. on the other hand, natural weight is introduced and numerical simulations and experiments of wlm on inversion of velocity and attenuation are also made, which show that wlm, with resistance of noises and convergence of iteration, may get good re - construction images
本文引入了物理意義明確的自然權，對基於自然權的加權阻尼最小二乘反演演算法（ wlm ）在速度反演、衰減反演中進行了數值模擬和試驗研究，結果表明wlm均能獲得良好的重建圖像，迭代收斂，抗噪能力強。 -
Analyzing the velocity and acceleration of the follower based on the assur - group method and the inversion of the mechanism. 4
3 .以桿組分析方法為基礎，結合轉化機構原理及凸輪機構的相對速度理論進行從動件的速度和加速度分析。 -
In this paper, taking the measured error sound velocity profile as the initial guess value, the sound beam travel times and beam angle recorded by the multi - beam system and the generalized linear inversion method are used to get a sound velocity profile close to the actual sound velocity profile, and the inversed sound velocity profiles have contributed to the reduction of sound velocity profile error
摘要以測得的誤差聲速剖面作為初始猜測值，利用多波束記錄到的波束傳播時間和波束角等信息，通過廣義線性反演得到一個與實際聲速剖面比較接近的聲速剖面，這有助於減少聲速剖面的誤差。 -
Using three - dimensional tomographic imaging results of 2 ? 2 ? grid s wave velocity and 15 ' 15 ' grid average gravity anomaly in north china, this paper adopted inversion with constrained least squares method and, as a result, obtained density distribution results of six bedding surfaces in lithosphere of north china
摘要利用華北地區的2 ? 2 ?網格s波速度三維層析成像結果和15 ? 15 ?的網格平均布格重力異常，採用約束最小二乘方法反演，得到了華北地區巖石圈內6個層面上的密度分佈結果。 -
Several numerical experiments are carried out to detect the actual steps and limitation for the velocity and depth parameter ' s ray inversion in the fourth chapter, and the we find that : a. the resolution capability of the layer ' s velocity change along both the top and bottom boundary is very poor. thus generally the vertical homogeneous layer model whose top velocity equal to that of its bottom boundary should be considered
本文的第四章通過一系列模型試驗詳細探討了利用射線反演方法反演速度和深度參數的實際步驟，認為走時反演對速度層內頂部和底部速度變化的分辨能力很弱，僅僅依靠走時數據難以反演出層內頂部和底部的速度變化，故一般情況下應採用速度層底部和頂部速度相同的縱向均勻模型。 -
The velocity, density and especially the anisotropic parameter which is important to the study of fractured formation can be achieved by the generalized linear inversion based on the ava inversion equations
用此反演方程對ti介質進行多波ava參數反演，不但可以求出地層速度及密度，還能得到各向異性系數，該參數對裂隙型地層研究具有重要意義。 -
The inversion results of the theory model and actual data show that the method can reconstruct near - surface velocity field of complex structure stably, quickly and accurately, thus, can calculate the statics and ensure structural imaging in complex area
理論模型和實際資料的反演結果表明，該方法能穩定、快速、準確地重建復雜地區的近地表速度場，建立準確的近地表速度場，從而可計算準確的靜校正量，保證復雜地區的構造成像。 -
Basically, the cross - well seismic data processing has two steps : traveltime velocity inversion tomography for direct arrival and seismic reflection stack image
井間地震資料的處理主要包括兩個最基本的內容，即直達波旅行時速度反演層析成像和地震反射波疊加成像。 -
The sirt inversion operator can be applied to solve the large - scale sparse linear equation and velocity tomographic inversion can be performed based on direct arrival traveltime and accuracy could be 3 meters
研究成功的sirt反演演算法可用於求解大型稀疏超定線性方程組，根據直達波旅行時進行速度層析反演，其精度可達到3米。 -
Many data such as m / g, em and seismic have been arranged, processed and interpreted in shengli oilfield, in which, the interpreted data ( 2 - d ) are 64 lines with 1800km. the techniques such as integration of process and interpretation, joint interpretation of m / g, em and seismic, variable velocity mapping, pressure prediction, constraint inversion without well and special process have been applied. the comprehensive researches on geology and physical exploration have been carried out in the whole block
該區油氣勘探始於50年代，勝利油田在該區塊先後部署、處理、解釋了重、磁、電、震等多種資料，其中解釋地震資料（ 2d ） 64條、 1800多公里，才用了處理解釋一體化、重、磁、電、震聯合解釋、變速成圖、壓力預測、無井約束反演、特殊處理等技術，對整個探區進行了地質、物探等綜合研究，發現兩個有利構造帶，落實了13個圈閉構造，提交了兩口探井井位。 -
In the process of building and using the mass concrete structures, because of the effect of out - side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance using nondestructive testing method to test the concrete ' s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseases this dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic fem to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, researched the principles of the first - arriving waves " phase when the cracks " depths are not same, obtained the relation between the inversion point and the cracks " depth, which has the direction sense in the application of projects, the second part of this dissertation is ct, which used the ultrasonic wave running through the tested - substance to get arriving - time of the ultrasonic wave, then inverse the image this dissertation drawed one ct program which can well present the different little cells " ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested - substance, ct has the better using foreground.
在混凝土結構的施工及使用過程中，由於受其自身及外界各種因素的影響，常常會產生一些缺陷，對結構物的承載能力和耐久性造成嚴重影響，採用無損檢測技術進行質量檢測和健康診斷，這對混凝土結構開展安全、穩定性評估以及病害隱患治理研究具有重要意義。本論文主要針對大體積混凝土結構缺陷的檢測方法展開研究工作，重點討論了超聲波法檢測混凝土結構裂縫的基本原理和方法及其特點、適用范圍，運用動力有限元數值模擬其檢測過程，探討了有裂縫缺陷的混凝土結構在脈沖荷載作用下彈性波的傳播及其變化特徵，研究了不同裂縫深度下首波相位變化規律，得出了反轉臨界點與裂縫深度之間的關系，這對實際工程應用具有指導意義。聲波ct是一種新的無損檢測技術，它是利用聲波穿透被檢測體獲取聲波接收時間，來進行計算機反演成像的技術。 -
A new robust adaptive scheme which are used for tracking of this robot with parametric and bounded external uncertainties is proposed in this thesis. the controller is consist of a controller which is proposed by slotine1 ' 1 and nonlinear continued feedback compensation part. by estimating the unknown physical parameters of robot on - line, it can eliminate the effects result by parameters and external disturbances and guarantee gas and uniform boundedness of parametric estimation. the only information required in setting up the strategy is the output states of jionts, while the inversion of the inertia matrix or estimation the bound of the inertia matrix and measure the jionts accelerations are not needed. it is shown by simulations that the proposed control scheme has quicker convergence velocity and better control precision than paper [ 1 ] and control schemes at present
針對該模型具有參數及有界外部擾動不確定性時提出了一種新的魯棒自適應控制策略，控制器由基於slotine的控制器和非線性連續反饋補償控制器構成。通過在線估計機器人的未知物理參數，有效的消除了由參數及外部擾動所引起的不確定性影響，保證系統達到漸近穩定和參數估計一致有界。與現存的許多控制方法相比，該控制策略不需求解慣性矩陣的逆或估計慣性矩陣的界，不需測量關節加速度，而唯一需要了解的只是系統輸出的位置及速度狀態。 -
Using the arrival times of 197 earthquakes well recorded by the beijing seismic network and the china - germany cooperative yanqing digital seismic array in the period from october of 2001 to december of 2005, we accurately relocate these earthquakes by the joint - inversion program for hypocentralr position and 3 - d velocity structure
摘要利用首都圈地震臺網和中德合作延慶數字地震臺陣2001年10月2005年12月獲得良好記錄的197次地震到時，運用地震震源位置和三維地殼速度結構聯合反演程序對這些地震實行精確定位。 -
According to the theory of generalized inversion, we can get the parameters of velocity and thickness in each layer with joint inversion of multilayer reflection wave ' s travel time
摘要從廣義反演理論出發，對多層反射波的走時聯合反演，可以同時獲得所有的各層速度及厚度參數。 -
Besides velocity inversion algorithm, the static correction in complex near - surface condition and irregular geometries may also impact the velocity modeling
影響速度模型精度的因素，除了速度反演演算法之外，還包括復雜近地表條件下的靜校正處理和觀測系統的不規則性。 -
During the inversion process of velocity and depth parameter, the velocity parameter should be inversed firstly and then do the depth so as to assure the stability of the final results and the reliability of the solution
在參數反演過程中應採用先反演速度參數、再反演深度參數的方案，這樣的步驟使得反演結果較穩定，得到的解更為可信。 -
We can analyze and observe directly the reasonability of processed data, that is helpful to improve the quality of tomography inversion and the reliability of velocity model tomography inversion, then provide reasonable surface velocity model for tomography static correction by some means, such as rotating, scale graphics, meanwhile combining with relating sectional drawing and clipping drawing
通過對三維立體進行全方位旋轉、縮放顯示，並結合與三維體一致的剖面和平截面的綜合考察，便於直觀地分析、監控地震數據處理結果的合理性，有助於提高模型層析反演的質量和表層速度模型層析反演的可靠性，並可為層析靜校正提供合理的表層速度模型。 -
Common focus point gather migration velocity modeling based on constraint parameter inversion
基於約束參數反演的共聚焦點道集偏移速度建模方法 -
This paper reviewed the theory, development and applications of 3 typical velocity analysis technologies, stack velocity analysis, migration velocity analysis and tomographic inversion
主要對疊加速度分析、偏移速度分析和速度層析反演三大類典型的速度分析方法的基本原理、發展及應用條件等作簡要的回顧與介紹。
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