助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   截断 在 地质学 分类中 的翻译结果: 查询用时:0.139秒
图标索引 在分类学科中查询
所有学科
地质学
数学
物理学
电信技术
力学
电力工业
天文学
无线电电子学
地球物理学
更多类别查询

图标索引 历史查询
 

截断
    很抱歉,暂未找到该词条在当前类别下的译词。您可以查看在所有学科下的译词。
相关语句
  “截断”译为未确定词的双语例句
    The author adopts Mur super absorbed boundary condition to solve the super strong reflection on the interceptive boundary when there is the forward simulation.
    为解决正演模拟时截断边界处的超强反射,采用了Mur超吸收边界条件,并以自制的探地雷达正演模拟程序为依托,对两个复杂的探地雷达模型进行了正演模拟,得到了正演剖面图。
短句来源
    FINITE LENGTH EFFECT AND KALMAN FILTERING IN THE SPECTRAL ANALY-SIS OF GRAVITY AND MAGNETICS
    重磁异常波谱的截断影响及KALMAN滤波
短句来源
    A METHOD TO REDUCE THE FINITE—LENGTH EFFECT BY KALMAN FILTERING IN SPECTRAL ANALYSIS OF POTENTIAL FIELDS
    一种用Kalman滤波减小位场谱分析截断影响的方法
短句来源
    A new approach for stochastic simulation of sedimentary microfacies.
    应用截断高斯随机模拟法研究沉积微相
短句来源
    ANALYSIS OF THE CUT-ERROR AND THE PHASE ANGLE OF ERROR TRANSFER FUNCTION IN THE FINITE DIFFERENCE MIRGATION
    有限差分偏移截断误差及其传递因子相角分析
短句来源
更多       
查询“截断”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


Using an approach of truncated matrices and Muller's method (parabolic iteration), the author has calculated numerically a set of eigenvalue-eigenfunctions for the diurnal mode of the atmospheric tide. Table 5 in the text gives the 20 X 20 order truncated eigenvalues for the symmetrical diurnal mode of the atmospheric tide derived by us.. It can be seen from these calculations that the imaginary part of the eigenvalue are several orders of magnitude less than the real part, therefore the approximate Hermi-tian...

Using an approach of truncated matrices and Muller's method (parabolic iteration), the author has calculated numerically a set of eigenvalue-eigenfunctions for the diurnal mode of the atmospheric tide. Table 5 in the text gives the 20 X 20 order truncated eigenvalues for the symmetrical diurnal mode of the atmospheric tide derived by us.. It can be seen from these calculations that the imaginary part of the eigenvalue are several orders of magnitude less than the real part, therefore the approximate Hermi-tian nature of the matrices truncated in finite order is thus confirmed. Also a calcula-tion experiment to ascertain the convergence characteristics of the truncated matrix and a comparison between our values and those obtained by S. Kato are briefly discus-sed in this paper.

本文用有限阶截断矩阵和抛物线叠代近似求根法数值求解了大气潮汐全日振荡模的本征值一本征函数问题,求得了20×20阶截断本征值和本征向量。计算结果表明本征值的虚部比实部小若干量级,从而由计算实验证实了大气潮汐本征值问题有限阶截断矩阵的近似厄密特性。文中还叙述了变矩阵阶次以确定计算收敛性的实验结果,并与前人的结果进行了对比分析。

In this paper, the truncation errors of the height anomaly and vertical deflection are estimated, and the approximate expressions of the higher order truncation coefficients are derived. These truncation coefficients are sinusoidal functions with a gradually attenuated amplitude, which is closely correlated with the value of Stokes' function at the cap radius ψ0. It is considered through analysis that, the order of the truncation error may he greatly decreased by using the method of Molodensky's least squares...

In this paper, the truncation errors of the height anomaly and vertical deflection are estimated, and the approximate expressions of the higher order truncation coefficients are derived. These truncation coefficients are sinusoidal functions with a gradually attenuated amplitude, which is closely correlated with the value of Stokes' function at the cap radius ψ0. It is considered through analysis that, the order of the truncation error may he greatly decreased by using the method of Molodensky's least squares approximation. So it is worth adopting in practice. In order to further raise the convergence velocity of the truncation coefficents, it is suggested that, adding the boundary conditions at the cap radius ψ0 on the basis of the least squares approximation, the result would he even better. In this connection we propose two methods for implementation: to use Lagrange's conditional extremum and the spline function approximation.

本文对高度异常及垂线偏差的截断误差进行了估计,导出了高阶截断系数的近似表达式。这些截断系数是振幅逐渐衰减的正弦函数,而且其振幅与斯托克司函数在界圆φ_0处的值密切相关。经分析认为,采用莫洛金斯基的最小平方逼近方法,将可使截断误差的数量级大为降低,值得在实际中采用。为了进一步提高截断系数的收敛速度,建议在最小平方逼近的基础上,附加上界圆φ_0处的边界条件,这样将较单纯的逼近为优。为此提出两种实施的方法:利用拉格朗日的条件极值和利用样条函数逼近。

It is well known that the deconvolution technique has been widely adopted in seismic data-processing. The deconvolution by FFT in frequency domain has been introduced in REFERENCE [1] but only the zero-phase wavelet has been dealt with. Here,the author trys to make an analysis about the truncated effect of the signal and the unstability of deconvolution by the utilization of the spectrum of wavelet.

反褶积技术广泛应用于地震资料的数字处理中.文献[1]介绍了用快速付里叶变换在频率域进行反褶积的方法,但只讨论了零相位子波情况.本文试图从子波频谱特点着手,对信号截断影响和反褶积不稳定性作一些分析,关于截断效应(或称边界效应、泄漏效应),专著[2]已作理论分析.文献[4]、[5]对地震信号道谱分析中平滑窗的应用作了讨论.这里,我们想从理论模型例子来详细说明截断效应的产生并讨论消除它的方法.

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关截断的内容
在知识搜索中查有关截断的内容
在数字搜索中查有关截断的内容
在概念知识元中查有关截断的内容
在学术趋势中查有关截断的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社