sirt
英
美
网络 瞬时迭代重建技术
双语例句
- According to the low concentration characteristics of the down-flow bed, SIRT method was used for image reconstruction and high quality ECT images were obtained.
针对下行床内固体颗粒浓度低的特点，采用了SIRT图像重建算法，得到了高质量的ECT图像。 - Improvement of SIRT Algorithm in Near-Surface Seismic Tomography
一种改进的近地表层析成像SIRT算法 - Design and Implementation of Sirt Online Examination System
石家庄铁路职业技术学院网上考试系统的设计与实现 - But because of the limitation of the ray's wide angle and the smooth effect of SIRT algorithm, transversal ambiguity exists in the crosshole seismic computerized tomography.
但由于射线有限广角的限制和SIRT算法的光滑效应，井间地震CT存在横向模糊的问题。 - A 12-electrode electrical capacitance tomography system for flow pattern identification was developed. To obtain the quantitative information of two-phase flow, a hybrid image reconstruction algorithm which combines Tikhonov regularization theory with SIRT ( Simultaneous Reconstruction Techniques) algorithm was used.
建立了12电极电容层析成像流型自动识别系统，该系统利用Tikhonov正则化原理并结合SIRT（SimultaneousReconstructionTechniques）算法进行图像重建。 - The use of Tikhonov regularization theory is to solve the ill-posed problem of image reconstruction and the use of SIRT algorithm is to improve the quality of the final reconstructed image.
Tikhonov正则化原理用于克服图像重建过程中的不适定问题，SIRT算法用于提高最终重建图像的质量。 - The SIRT tomography was discussed in detailed in terms of principles and methodology, and validity of algorithm.
从方法原理、算法的有效性、数值模型和野外实际资料的层析反演等方面，对SIRT井间地震层析成像技术进行了系统研究。 - According to a SIRT method, by discussing tomographic results of different cross-well observation system, this article presents some useful criteria of selecting a cross-well observation system in order to obtain some approximate relations among shot interval, trace interval and maximum array length.
本文将根据直射线的SIRT方法，通过不同井间观测系统对成像质量的影响，提出了选择井间观测系统应遵循的某些原则，进而获得炮间距、道间距和最大排列长度间的估算关系。 - Shortest path ray tracing is used in the forward step and SIRT in the inversion step.
正演使用最短路径法射线追踪，反演采用SIRT方法。 - Proper selection of the weight function and the filtering threshold based on maximum entropy theory significantly improved the speed and quality of reconstruction with the improved SIRT algorithm.
改进后的SIRT算法使重建图像的速度和质量都有了明显的提高。 - Both ART and SIRT belong to iterative method in which the precision of solutions is not completely in positive proportion to iterative times.
ART与SIRT方法属于迭代算法，迭代精度并不完全正比于迭代次数； - In algebra iterative algorithm we found the range of relaxation parameter is very different. The range of relaxation parameter of ART was narrower than that of SIRT.
在代数迭代算法中，通过模拟图像的重建发现，ART算法和SIRT算法松弛因子的选择有很大的不同，SIRT的松弛因子选择范围偏小，而ART的松弛因子选择范围要宽得多； - Analysis through the numerical estimation, the accuracy of hypocenter location and the image quality of velocity structure can be improved in the region well recovered of rays, and the computer time and memory are reduced greatly by the use of modified ART and SIRT algorithms.
数值模拟研究表明，在射线覆盖较好的地区，联合反演能够提高震源定位的准确度，较好地重建速度结构的真实图像，并比传统的矩阵方法大大减少运算所需机时及内存。 - In the computation, the algebraic reconstruction technique ( ART) is adopted and modified. In order to improve the computation stability and convergence of ART and SIRT algorithms, a reasonable weighting factor is suggested.
计算中采用了代数重建法，并就改善ART和SIRT这两种算法的稳定性及收敛速度，提出了较合理的权因子。 - A reconstruction algorithm named the simultaneous iterative reconstruction technique ( SIRT) was introduced to resolve the main problems caused by the soft field effect and the limited number of measurements in electrical capacitance tomography ( ECT).
在电容层析成像（ECT）系统中，为克服电容测量值数目有限以及管道内敏感场分布的软场效应，引入了一种同步迭代图像重建技术（SIRT）。 - The ART and SIRT algorithms modified to solve parameter coupling are applied to the simultaneous inversion of velocity-hypocenter in this paper.
本文将层析技术中的ART和SIRT算法应用到地方台网资料的处理，针对震源定位对速度结构反演的影响，将ART和SIRT算法公式进行推广，联合反演速度&震源位置。 - For inversion algorithms, the extending Kalman filtering theory and the iterative reconstruction algorithms including ART and SIRT are compared by computerized model tests, and the characteristics of three kinds of inversion algorithms are analyzed in theory;
对于反演算法，利用自编程序对迭代重建算法（ART算法和SIRT算法）和扩张Kalman滤波法进行了比较，并从理论上分析了三种算法的特点； - This paper adopts simultaneous iterative reconstruction technique ( SIRT) to perform the crosswell tomography based on shortest path tree ( SPT) curved ray tracing.
利用基于最短路径树弯曲射线追踪的联合迭代重建层析成像（SIRT）技术进行井间地震层析成像。 - These constraints greatly improved the inversion accuracy and image quality of the SIRT method means.
这些约束手段大大改善了SIRT方法反演的精度和成像质量。