truncation error
[数] 截断误差
2025-01-06 21:22 浏览次数 2
[数] 截断误差
the appropriate selections of the moving interval, truncation error and the point of onset is to minimize the computer storage and the number of operations required.
为降低运算量和虚模型中的存贮,应适当选取移动间隔,截断误差和移动起点。
truncation error results from using only the first few terms of an infinite series.
舍弃误差则因在无穷级数中仅计算及有限项数而造成。
we therefore have a truncation error of 0.01.
因此,我们有一个截断误差为0.01 。
the analytical truncation error formulas of a partial differential equation are given for the upstream scheme and the centered difference scheme, respectively.
然后引入参考解的办法, 用来分离更为一般的微分方程求解过程中的截断误差和舍入误差。
the results of computer simulation show that the truncation error caused by finite scanning plane can be effect…
计算机模拟结果表明,通过对近场进行加余弦窗的数据处理能够有效地减小有限扫描面截断误差。
sampling plane truncation error is a very important factor of affecting the result in time domain near field measurement.
采样面截断误差是影响近场测试结果的一个很重要的因素。
in fact, any numerical discretization method has truncation error and there「s no need to treat the difference equations as equality constraint.
事实上,由于任何数值离散方法均存在截断误差,将其作为等式约束是没有必要的。
bartlett time- window function widely used in present digital seismic data processing has two obvious problems:(1) residual truncation error attenuates periodically;
目前,地震资料数字处理中普遍使用的巴特利特时窗函数存在两个明显的问题:①剩余截尾误差按周期性规律衰减;
the results show that the scheme has many advantages such as high interpolation precision andfiltrating the short waves caused by the truncation error in the process of vertical interpolation.
试验结果表明,该方案具有插值精度高,可滤去由垂直插值引起的高于42个波数截断的短波成分等优点。
this paper presents an optimization of centered finite-difference operator based on the principle of constrained cost function, which can reduce the truncation error to minimum.
作者根据约束性代价函数原理提出了能够使得截断误差最小化的中心差分优化算子。
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.
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。
the analysis of the truncation error in the vertical pressure gradient has been made with and without the pressure separation technique for different atmospheric stratifications.
分析了气压分离和不分离,在几种不同的层结情况下,垂直气压梯度的截断误差。
the time-frequency domain sampling characteristics of periodic signal, the truncation error and the spectrum leakage error caused by asynchronous sampling are discussed in detail.
讨论了周期信号取样的时域频域特性、非同步取样引起的截断误差和频谱泄漏误差。
this paper introduces a dtmf software synthesizer based on dds and its implementation and analyzes the effect of phase noise spurious noise and phase truncation error on output wave form.
介绍了一种基于dds的dtmf软件合成器之工作原理及其实现,分析了时钟相位噪声、杂散噪声、相位截断误差对输出波形的影响。
in this paper, the additive mass technique is also proposed for correcting the truncation error of higher order modes without using the residual compliance matrix.
本文还提出了一种附加质量法来修正高阶模态的截尾误差而不采用剩余柔度矩阵,从而使本法能简易地获得高精度。
a direct evidence for intermittency induced by truncation error is provided in the paper.
一个截断误差诱导阵发混沌的直接证据。
economic input-output assessment (eiolca) can avoid truncation error but excludes use stage of life cycle.
投入产出方法可以避免截断误差的产生但不包括产品生命周期的使用阶段。
according to mirror image principle. a simple and practical formula for numerical match and a dependence for estimating truncation error of summing up infinity terms are proposed out.
文章根据镜像原理,提出了简单实用的数值拟合公式与求无穷和项截断误差估计关系式。
a new integration formula and its local truncation error are presented on the basis of non-iso-interval newton interpolation.
本文基于不等距牛顿插值,简捷地导出了一个新的积分公式及其截断误差。
the spectrum characteristics of the phase truncation error and amplitude quantization error are analyzed by the method of fourier series.
介绍了直接数字频率合成技术以及分析其杂散误差,对相位截断误差和幅度量化误差进行了傅立叶级数分析研究。