Wigner相关论文
Bilayer twisting as a mean to isolate connected flat bands in a kagome lattice through Wigner crysta
The physics of flat band is novel and rich but difficult to access.In this regard,recently twisting of bilayer van der W......
高血压作为目前世界上发病率最高的疾病之一,是引起脑卒中、冠心病和肾功能不全等严重疾病的重要因素。本文应用伪Wigner-Ville分......
地声是一种具有非稳态特征的地球物理信号，分析其谱特征时须有别于稳态信号．本文以位于郯庐断裂带中段上的深井中所捕捉到的地声信号......
The Wigner function for the Dirac oscillator in spinor space is studied in this paper.Firstly,since the Dirac equation i......
We investigate the spin-orbit coupling effect in a two-dimensional(2D)Wigner crystal.It is shown that sufficiently stron......
根据时间-频率的分布在表示人类发生颞叶癫痫时皮质电图(Electrocorticograms-ECoG′s)的非稳定性方面的功效,估计了三种时间一频......
A hybrid time-frequency method known as Gabor-Wigner transform(GWT) is introduced in this paper for examining the time-f......
:On the basis of the fractal geometry, a nactional Brownian Motion (FBM) model for the noise radiated by ship was establ......
The effects of ternary solutes Ti, Co, V, Cr, Ta, W and Mo on the D03 phase 5tability of Fe3Alintermetallics are investi......
地震信号的衰减一般是在频域内利用信号功率谱的统计性质进行表征。但是,传统的基于傅立叶变换的功率谱估计方法的分辨率较低,使得......
The chaotic characteristics of bubbles rising with accompanying coalescences in pseudoplastic aqueous carboxymethylcellu......
A phase-averaged Wigner distribution trajetory method is suggestedto calculate the dissociative probability of CH_4 on a......
Characterization of Pressure Signals in Fluidized Beds Loaded with Large Particles Using Wigner Dist
An experimental verification is reported on the early predicting index of agglomeration in bubbling flu-idized bed. Coar......
讨论了一种振动信号分析的新方法——Wigner谱。它与以往频谱分析方法相比,更适合于分析非平稳性信号。把Wigner谱分析应用于柱塞......
A new method of fault analysis and detection by signal classification in rotating machines is presented. The Local Wave ......
The characteristics of typical AE signals initiated by mechanical component damages are analyzed. Based on the extractin......
本文从原子和场模密度算符的主方程出发,将Haake和Lewenstein新近为通常的单模激光理论所发展的原子变量绝热消除的算符方法应用......
Application of spectral decomposition technology in shallow gas detection based on Wigner-Ville dist
Shallow gas is composed of all kinds of shallow buried natural gas resources( < 1500 m) with relatively small reserve fo......
Wigner- Dyson型的随机矩阵理论作为一种可能的统计分析方法用来分析高能重离子碰撞中所产生的粒子谱的某些无规性 ,此统计分析方......
The formalisms of helicity coupling amplitudes for J/ψ→π~+π~-π~0 are presented.A detailed discussionis also given ......
目的:提出一种基于表面肌电信号时频分析的预测膝关节力矩的新方法。方法:受试者完成递增负重蹲起实验,采集股直肌的表面肌电信号......
首先引入时频分析的概念,介绍了短时傅里叶变换、Wigner—Ville分布和连续小波变换的数学表示和性质.其次基于经典检测理论,讨论并......
The aim of this paper is to propose a novel technique for the detection of multicomponent chirp signal and the parameter......
本文简要地讨论了时频分布（ＴＦＤｓ）的概念和原理。作者由信号（包括确定性的，平稳的和非平稳的）引入频谱分布的ＴＦＤｓ。ＴＦＤｓ中的核函数设计主要有两方面的......
由于线性调频信号（LFM）的线性时频调制规律，即其模糊度和Wigner－Ville分布（WVD）图象均具有线性峰脊特性，本文利用LFM信号的这一特性，用对其......
在星载合成孔径雷达（ＳＡＲ）系统中，多普勒中心频率的精度直接影响着成像的质量。目前常用的多普勒中心频率估计方法的估计精度与目标场景的......
In modern radar techniques, pulse signal can be replaced by the chirps, which is taken to be signals in Lp space. Wigner......
The phenomenon of frequency ambiguity may appear in radar or communication systems. S. Barbarossa(1991) had unwrapped t......
On the basis of an introduction of the Wigner Higher Order spectra(WHOS) and a general class of time frequency higher ......
研究了基于 Ｗｉｇｎｅｒ－Ｖｉｌｌｅ分布的宽带回波到达时刻的估计方法。通过回波信号与参考信号Ｗｉｇｎｅｒ－Ｖｉｌｌｅ分布的时频相关，完成对回波到达时刻的估计。在此基础上，本......
研究了基于 Ｗｉｇｎｅｒ－Ｖｉｌｌｅ分布的宽带回波瞬时多普勒估计方法。利用时频分析特有的时、频特征分离的特点，通过信号Ｗｉｇｎｅｒ－Ｖｉｌｌｅ分布的时频相关，进行回波信号瞬......
Nonexistence of cross-term free time-frequency distribution with concentration of Wigner-Ville distr
Wigner-Ville distribution (WVD) is recognized as being a powerful tool and a nucleus in time-frequency representation (T......
Wigner Frequency Point Slice Analysis of Superposition Data for Phased-Array Ground Penetrating Rada
According to the frequency property of Phased-array ground penetrating radar (PGPR), this paper gives a frequency point ......
用 Wigner-Ville 分布在时频二维域上表示非平稳信号具有许多优点,本文对这种表示的原理及其主要性质作了较为系统的介绍,简述了它......
Wigner谱直接定义为信号的时间一频率两维联合谱函数,适合于分析信号的非平稳特性。本文阐述了Wigner谱的基本性质和数字实现方法,......
Statistical performance of IF estimation of LFM signals with timevarying amplitude using the peak of
The instantaneous frequency (IF) estimation of the linear frequency modulated (LFM) signals with timevarying amplitude u......
The Wigner-Ville distribution (WVD) and the cross Wigner-Ville distribution (XWVD) have been shown to be effcient in the......
The distribution of a modulated squeezed state over a quantum channel is the basis for quantum key distribution(QKD) wit......
Based on the asymptotic spectral distribution of Wigner matrices,a new normality test method is proposed via reforming t......
,Narrowband Interference Rejection in DSSS Communication Systems Based on Filter Banks and Time-Freq
This paper presents a new nar-rowband interference rejection algorithm in direct-sequence spread spectrum systems which ......
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Feature Extraction Method Based on Pseudo-Wigner-Ville Distribution for Rotational Machinery in Vari
In the case of fault diagnosis for roller bearings, the conventional diagnosis approaches by using the time interval of ......
该文利用TI公司的新一代DSP芯片TMS320C50,设计了一套便携式实时数字信号处理系统,并利用该系统进行了时频分布的实际计算.便携式......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The National Institute of Standards and Technology (NIST) document is a list of fifteen tests for estimating the probabi......
