Methods: the mathematic method is used to find a uniform expression for frequency aliasing matrix of different resolution images.
方法：用数学方法求解对应于低分辨率遥感图像的统一频谱混叠。
The frequency aliasing due to sub-Nyquist sampling can be resolved by the proposed frequency aliasing resolving algorithm and information from the time-delay channel.
文中，欠采样所引入的频率模糊由增加的延迟通道提供的信息加以消除，并提出了相应的频率解模糊算法。
The experimental results show that the method can overcome the limitations of the critical angle between the object and reference beams, and omit the frequency aliasing.
实验结果表明，该方法可有效地突破最大物参角的限制，同时可以消除由于欠采样造成的频谱混叠现象。
A wavelet packet frequency-shift algorithm for remote sensing image fusion was introduced to solve the problem of serious frequency aliasing caused by dyadic-down sampling.
在基于小波包的遥感图像融合应用中，引入用于调整小波包分解频率顺序的小波包移频算法来解决由于间隔采样而导致的频带混叠现象。
Author suggests that increasing number of measurement taps and prolonging sampling time and enhancing sampling frequency will decrease signals aliasing and leakiness.
并提出在进行压力脉动试验时，应增加测点、延长采样时间、提高采样频率以避免信号遗漏和信号混叠等现象的发生。
For bandpass signal under digital quadrature sampling, there is spectrum shifting. Although the sampling frequency satisfies the sampling theorem, it may cause spectrum aliasing.
在数字正交采样中，带通信号存在频谱迁移问题，虽然满足带通信号的采样定理，仍可能产生频谱混叠。
In addition, line mode and zero-mode voltage wave cross each other at the point of fault which causes the natural frequency "aliasing".
此外，故障电压行波于非对称短路点发生线模与零模行波相互交叉透射，致使故障电压自然频率“混叠”。
Filtering the high frequency part of the signal and reducing the sampling frequency, which does not produce the aliasing, is called sampling.
从信号中去除高频信息，降低抽样频率而不导致频谱混叠的过程称之为抽取。
It is proved that rea1 frequency transfer ability, aliasing effect, information density, etc. may be of use for characterising the image-forming CCD.
用真频传递能力、混淆效应、信息密度等示性参数准确表述了电荷耦合器件的成像特性。
The sampling theorem shows that aliasing can be avoided if the Nyquist frequency is greater than the bandwidth, or maximum component frequency, of the signal being sampled.
采样定理表明，如果奈奎斯特频率大于样本的带宽或样本成分的最高频率，系统的采样失真可以避免。
The method starts with the theoretically minimum frequency and searches for the minimum valid sampling frequency using variable step sizes subject to three non-aliasing constraints.
该方法从理论上可能的最小采样频率出发，根据采样后频谱不发生混叠的3种约束条件来确定可变的频率步长，搜索可用的最小频率。
The method starts with the theoretically minimum frequency and searches for the minimum valid sampling frequency using variable step sizes subject to three non-aliasing constraints.
该方法从理论上可能的最小采样频率出发，根据采样后频谱不发生混叠的3种约束条件来确定可变的频率步长，搜索可用的最小频率。
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