离散频谱

调制FFT及其在离散频谱校正技术中的应用

Modulated FFT and its application in the discrete spectrum correction

一种基于离散频谱校正的SPIDER信号处理改进方法

Improved SPIDER signal processing method based on discrete spectrum correction

综合分析现有三种离散频谱相位差校正方法，推荐在小噪声工程实际中加Hanning窗的第一种相位差法（采连续两段信号作相同点数FFT的相位差校正法）进行校正。

After analysising three existed methods for phase difference correction on discrete spectrum , it is recommended to correct the spectrum containing small noise in engineer practice by the first phase difference correcting method ( performing FFT analysis on two continuous original sequence ) with Harming window .

基于离散频谱分析的自由衰减振动信号的幅值恢复

Discrete spectrum analysis for amplitude correction of damped free vibration response

离散频谱时移相位差校正法

Time - Shifting Correcting Method of Phase Difference on Discrete Spectrum

离散频谱分析中两邻近谱峰参数的识别

Identification of Parameters of Two Close Frequency Components in Discrete Spectrum Analysis

离散频谱多点卷积幅值修正法的理论分析

Theoretic Analysis of Amplitude Correction Approach Using Convolution of Several

适用于加各种窗的一种离散频谱相位差校正法

A Phase Difference Correcting Method on Discrete Spectrum Adapting to Any Window Function

离散频谱校正方法的综合比较

The Synthetical Comparison of Correcting Methods on Discrete Spectrum

离散频谱四点能量重心校正法及抗噪性能分析

Anti-noise performance of energy centrobaric correction method using four points for discrete spectrum

离散频谱分析的一种新校正方法

A New Rectifying Technique of Discrete Spectrum Analysis

离散频谱的全相位校正法

All Phase Correction Method for Discrete Spectrum

一种稳健的离散频谱校正方法

A Robust Discrete Spectrum Correcting Method

在理论概括比值法原理的基础上，提出一种新的自动识别和修正离散频谱中两邻近谱峰参数的方法。

A new method to identify and correct the parameters of intensive frequency components automatically in the discrete spectrum was presented .

本论文探讨全相位离散频谱校正及应用，主要是针对数字信号处理中存在因信号序列截断引起的一些问题而提出的。

This paper studies all-phase discrete spectrum correction and applications aim to some problems which arise from signal sequence truncation in digital signal processing .

该文提出了一种适用于连续波雷达测速的、稳健的离散频谱校正方法，即三角形法。

A robust correcting method for discrete spectrum in CW radar velocity measuring is proposed in this paper , t is named the method of triangle .

这种方法是一种通用的离散频谱相位差校正法，文献[10～11]提出的校正方法只是此法的两个特例。

It is a general method of phase difference correction on Discrete Spectrum . The methods referred in the tenth and eleventh reference documentation are only two particular cases of this method .

针对实际工程中旋转机械转速不稳定时频谱所出现的的严重的能量泄漏现象，在分析离散频谱校正理论及校正方法的基础上，研究了旋转机械转速不稳定工况下振动信号的幅值校正技术。

The following three aspects are mainly studied : Firstly , the amplitude correction under the condition of unstable rotary speed is studied . ft is known that severe energy leakage occurs under such condition .

该文针对已有算法存在的问题，提出了一种基于两根谱线的加权平均来修正幅值的双峰谱线修正算法，利用距谐波频点最近的两根离散频谱幅值估计出待求谐波的幅值；

In order to overcome some shortcomings of existing correction methods , an improved algorithm is present in this paper , with which the amplitudes of harmonics can be estimated from the two neighboring spectral lines .

本文提出了一种对幅值进行校正的新方法，以解决离散频谱当谱峰谱线没有对正峰顶时所带来的误差。

His paper puts forward a new method which can rectify the spectrum peak value of amplitude spectrum in order to decrease the errors that exist when the spectrum line is not on the peak position .

并采用动态信号离散频谱分析领域最新研究成果，基于虚拟仪器设计思想，研制新方法、实时性好、精度高的基于Windows2000的动态信号分析虚拟仪器软件系统。

Adopting the latest research result on dynamic signal discrete spectrum analysis and the idea of virtual instrument , a dynamic signal analysis virtual instrument software system is developed , which is based on windows and has good performance .

目前频谱校正理论已经能准确地自动识别出离散频谱中的单频成分和间隔较远的多频率成分，并自动校正其频率、幅值和相位；

At present , the single harmonic component and far spaced multi frequency components in discrete spectrum can be identified by using the methods of spectrum correction , and its frequency , phase and amplitude can be corrected automatically .

本文探讨了对线性调频连续波雷达的中频信号采样所需遵循的准则，分析了其离散频谱具有的频谱泄漏现象和需要限制可分辨最大作用距离的特性。

This paper discusses the sampling criteria of the intermediate frequency signal in the linear frequency modulated continuous wave radar , and analyses the spectrum leakage phenomena that exist in its discrete spectrum and the features of the maximum distinguishable range that should be limited .

多跨梁离散系统的频谱和模态的定性性质

Some qualitative properties of frequency spectrum and modes of difference discrete system of multibearing beam

提出一种利用信号对称拓展技术抑制离散傅立叶变换频谱泄漏的方法，实验证明是一种有效的方法。

The restrain method of DFT frequency spectrum leakage base on signal symmetry extension is proposed in this paper , experimental results show that this method is effective .

对高度、面积、亮度等单特征量，先进行变化特征二值化，有效排除干扰，然后进行离散Fourier变换进行频谱能量分析，形成量化判据。

To single characteristics amount such as the height , area , luminance , etc. , change characteristic into binary value first , get rid of interference effectively , then carry on dispersed Fourier transform and analyzing spectral energy , form the quantization criterion .

为得到连续时间信号的频谱特征，采用高速A/D卡PCI-9812对其进行采样，再运用离散傅立叶变换进行频谱分析。

To get the spectrum of continuous - time signals , high speed A / D card of PCI - 9812 is used for sampling , discrete - Fourier - transform is used for the spectrum analysis .

离散系统矩阵的频谱插值法

Spectrum Interpolation Method of Discrete System Matrix

导出了二进离散小波的能量频谱与离散信号频谱之间的关系。

Its feasibility was discussed , and the relation between discrete signal spectrum and dyadic discrete wavelet energy spectrum was derived in this paper .