三,采样定理(sampling theorem) 混叠(aliasing):若采样率过低即采样间隔大, 则系列的离散时间序列可能不能真正反映原始 信号的波形特征,在频域处理时会出现频率...
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... sampling test 取样试验,抽样试验 sampling theorem 采样原则,抽样定理,采样定理 sampling theorem in the frequency domain 频域采样定理 ...
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Nyquist sampling theorem 奈奎斯特抽样定理 ; 定理 ; 样原理 ; 尼奎斯特取样定理
Whittaker-Shannon sampling theorem 惠特克 ; 香农抽样定理 ; 香农采样定理
Shannon's sampling theorem 香农取样原理 ; 香农采样定理
frequency sampling theorem [统计] 频率抽样定理
Shannon sampling theorem 香农采样定理 ; 惠特克 ; 采样定理 ; 惠特克香农采样定理
time domain sampling theorem 时间域采样定理 ; 时域抽样定理
frequency domain sampling theorem 频率域采样定理
fundamental sampling theorem 基本采样定理
In this paper,the approach of problem-based teaching is introduced by taking the sampling theorem teaching as an example.
本文以取样定理的教学为例,阐释了问题式教学法的实施步骤。
参考来源 - 问题式教学法在“信号与系统”课程教学中的运用Then based on the definition of two-dimensional WFRFT, we present the sampling theorem for bandlimited signals in two-dimensional WFRFT domain.
然后,基于二维加权类分数傅立叶变换的定义,给出了二维加权类分数傅立叶变换域带限信号的采样定理。
参考来源 - 加权分数傅立叶变换的采样研究In this paper the theory of microscanning is described and the process of imaging of microscanning is simulated theoretically, meantime, the possibility of improving the quality of image using microscanning is deduced from the sampling theorem.
详细介绍了微扫描的原理，并对微扫描的成像过程进行理论建模，从抽样定理推论出采用微扫描技术对改善图像质量的可能性。
参考来源 - 红外凝视系统中的微扫描技术·2,447,543篇论文数据，部分数据来源于NoteExpress
The papers explanation of the minimum sample rate in the sampling theorem provides a theoretical basis for teaching and research.
抽样定理中最低抽样率的明确说明为教学和理论研究提供了进一步的理论依据。
In the course of the sampling, the sampling theorem is a basic rule and points out the least sampling frequency for reconstructing the signals.
采样定理是采样过程中所遵循的基本规律，它指出了重新恢复连续信号所必需的最低采样频率。
In the H-FDTD method, Hegxagon grid is used for the spatial discretization by virtue of peridodical sampling theorem based on arbitrary geometry.
这种方法基于任意几何形状网格的抽样定理，利用六边形网格来实现空间离散化。
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