奈奎斯特

CCD相机在系统奈奎斯特频率处的调制传递函数

Modulation Transfer Function of CCD Camera at Nyquist Frequency

宽带奈奎斯特FIR滤波器的设计与实现

Design and Realization of a Wide Band Nyquist FIR Filter

压缩传感理论（CompressiveSensing，CS）是近几年来新近发展的一种不同于奈奎斯特采样定理的信号处理方法。

Compressive sensing ( CS ) is a rising fancy signal processing theory in recent years , which is different from Nyquist sampling theory .

压缩感知（CompressedSensing，CS）是对信号进行数据采集以及编解码的一种新的采样方法，其突破了奈奎斯特（Nyquist）采样定理对信号频率的限制。

Compressed sensing ( CS ) is a new sampling method to capture and encode signals . It breaks through the Nyquist sampling theorem restrictions sparse signal sampling theory .

本文设计了一种用于完成QAM数字电视解调芯片中符号及匹配成形功能的奈奎斯特滤波器。

This paper presents a Nyquist filter to perform symbol synchronization and matched filtering in a QAM demodulator for digital television .

多年来，指导信号采样的理论基础一直是著名的奈奎斯特（Nyquist）采样定理。

For many years , the theoretical basis to guide the sampling signal has always been the well-known Nyquist sampling theorem .

该方法比巴特沃兹（Butterworth）法和奈奎斯特（Nyquist）法有效和可靠。巴特沃兹有源滤波器设计中的灵敏度分析

This method is more effective and reliable than those of Butterworth and Nyquist . The Sensitivity Analysis to Butterworth Active Filter Design

蓬勃发展的压缩感知（CompressedSensing）理论提供了一种非常简单有效的信号获取方式，借助于重构算法它可以用低于奈奎斯特率的采样来恢复原始信号。

The vigorous theory of compressed sensing ( CS ) provides a very simple and effective signal acquisition method , which can sample signal below the Nyquist rate and recover the original signal by means of reconstruction algorithm .

对振动下系统MTF与静态情况下进行了实验比较，结果表明在相同奈奎斯特频率处下降0.3左右，与仿真结果一致。

Vibrational MTF is compared with that under static condition , and the results are consistent with simulation curve with a30 % decrease at the Nyquist frequency .

而新兴的压缩感知理论（CompressedSensing，CS）指出只要信号是稀疏的或者是可压缩的，我们就能以远低于奈奎斯特的采样速率对信号进行采样并能够精确的重构出原始稀疏信号。

The emerging theory of compressed sensing ( Compressed Sensing , CS ), point out that if the signal is sparse or compressible , wecan go to sample by the rate which much lower than the Nyquist sampling rate .

鲁棒逆奈奎斯特方法中鲁棒Gershgorin带的近似估计

An Estimation of Robust Gershgorin Bands in Robust Inverse Nyquist Array Method

传统的奈奎斯特模数转换器要求模拟电路具有高精度。相反，过采样ADC利用过采样技术，降低基带中量化噪声的功率，提高内部通带的信噪比，实现使转换器增加有效量化位数的目标。

Conventional Nyquist Analog-to-digital converters require precise analog circuits . In contrast , oversampling converters use oversampling technique , make the quantization noise power small in baseband , increase the SNR in baseband and achieve the more ENOB .

本文在多变量奈奎斯特（Nyquist）稳定判据及逆Nyquist稳定性判据的基础上，给出了一组适合于电力系统分析的矩阵范数界鲁棒稳定性判据，得到了相应的电力系统稳定性督棒指示因子。

Based on the multi-variable Nyquist and inverse Nyquist criteria , a set of matrix-norm robust stability theorems suitable for power systems are developed and the corresponding robustness measures are obtained .

利用输入信号频率与采样频率互为质数的特点，可使并行交替式ADC系统对直流和奈奎斯特频率的输入信号幅度分辨力都能提高。

According to the characteristics of output signal spectra with offset dither , the resolution of time-interleaved ADC to the input signal with a frequency range from DC to Nyquist frequency can be improved by using low pass filters .

Candes、Donoho和陶哲轩等创立的非奈奎斯特信号采样和处理体系&压缩感知（CS）理论试图解决上述问题。

Candes , Donoho , and Tao founded the non-Nyquist signal sampling and processing system & compressed sensing ( CS ) theory attempts to solve the above problems .

在第三章，利用奈奎斯特准则和Hopf分岔图示定理分析上述两个模型的Hopf分岔方向与分岔周期解的稳定性。

The algebraic equations for computing the Hopf bifurcation are obtained . In Chapter three , the direction and stability of the bifurcating periodic solutions are determined by the Nyquist criterion and the graphical Hopf bifurcation theorem .

根据奈奎斯特采样定理，对插值滤波器进行了采样频率分析、量化误差分析，并得出分辨率与OSR的关系。

This paper analyzes the interpolation filter under different sampling velocity and qualified differences according to Nyquist Sampling Theory and educed the relationship between resolution and OSR consequently .

正交复用QAM（OQAM）系统传输效率可以接近奈奎斯特速率，并对传输媒介引起的时延和幅度失真不敏感。

The orthogonally multiplexed QAM ( OQAM ) system allows transmission speed very close to the Nyquist rate with little sensitivity to the delay and amplitude distortions introduced by the transmission medium .

该理论方法已得到了实际应用，从获得的遥感图像达到的分辨力、奈奎斯特（Nyquist）频率处的传递函数、信噪比和平均灰度层次均充分证明了该研究结果的正确性。

This total solution was applied to SORS system field test and has been confirmed to be very accurate based on the resolution , transfer function at Nyquist frequency , signal-to-noise ratio and average gray scale of the captured images .

介绍了一种高性能CMOS采样/保持电路。该电路在3V电源电压下，60MHz采样频率时，输入直到奈奎斯特频率仍能够达到90dB的最大信号谐波比（SFDR）和80dB的信噪比（SNR）。

A high performance CMOS sample / hold circuit is presented , which achieves 90-dB spurious-free dynamic range and 80-dB signal-to-noise ratio over Nyquist band in 60 MHz sampling frequency at 3 V supply .

关于等离子体川流激发回旋不稳定性的奈奎斯特判据（Ⅱ）

On the Nyquist criteria of cyclotron instability caused by plasma streams (ⅱ)

奈奎斯特判据判断非单位反馈系统的稳定性

Determining Stability of Non-Unity Feedback Systems by Using Nyquist Criterion

采样定理与奈奎斯特准则的研究

A Study of Shannon Sampling Theorem and Nyquist Criterion

欠奈奎斯特采样在数字接收机中的应用

Application of Sub - nyquist Sampling in Digital Receiver

奈奎斯特第三准则响应函数的求取方法

The Method of Gaining Nyquist Third Criterion Response Function

在信号处理中数字化的第一步便是采样，一般遵循奈奎斯特采样定理对语音信号采样。

The first step of digitalization is sampling .

在以往的信号处理流程中，对信号的采样所采用的采样准则是奈奎斯特采样定理。

Nyquist sampling theorem is the theoretical guidance of traditional signal sampling and processing .

最后构造了满足奈奎斯特第二准则的等效传输函数。

Then , the transfer function that equivalent to Nyquist 's second criterion is constructed .

一种改进的奈奎斯特曲线绘制方法

An Improved Technique of Drawing Nyquist Curves

采样定理的内在不自洽性和工程应用的局限性&采样定理和奈奎斯特准则研究·上篇

The Inner Self inconsistency and Confinement in Engineering Practice for the Sampling Theorem : Part ⅰ