Then according to the good decreasing property of Chebyshev expantion, we prove the better characteristics of nonuniform sampling DCT in compression ratio and compression quality comparing with uniform sampling DCT. 然后根据Chebyshev展开式良好的下降特性,证明了文章提出的非均匀取样的DCT变换与传统的均匀取样DCT变换相比在信号的压缩倍数和压缩质量方面所具有的良好特性。
Second, the retina character is modeled by a new nonuniform sampling method with changeable structure. 提出一种新的可变结构的非均匀采样映射来模拟生物视网膜特性;
Implementation of Nonuniform Sampling and Recovery of Digital Speech Signals 数字语音信号的非均匀采样的实现
In this paper, based on the normal theory of nonuniform sampling, we derive an algorithm to estimate the sampling time offsets at each sampling-hold and A/ D module. 本文在均匀取样一般理论的基础上,推导出了一种估计各个通道的取样时间偏差的方法。
There are requirements of nonuniform sampling in certain applications of signal processing and communications. 在某些信号处理和通信应用中要求非均匀抽样。
Study on Spectrum of Nonuniform Sampling Signals Based on Wavelet Transform 基于小波变换的非均匀采样信号频谱的研究
A Novel Method for Signal Detection Based on Nonuniform Sampling 一种非均匀采样下小信号的检测方法
A Test Strategy Based on Nonuniform Sampling in Time-domain, Frequency-domain, and State-domain 在计量中时域、频域、状态域的非均匀采样测试策略
Adaptive Notch Filter Based Signal Processor System of Nonuniform Sampling 基于自适应陷波的非均匀采样信号处理系统
Second-order nonuniform sampling for the fast recovery of bandpass signal 二阶非均匀带通采样信号的快速恢复
Sampling Parameters of Periodically Nonuniform Sampling 周期非均匀采样带通信号的采样参数
Two Dimension Nonuniform Sampling Image Coding 二维非均匀取样图像编码
In practice, nonuniform sampling occurs in high speed data acquisition system due to imperfect sampling timebase. 在许多高速数据采集系统中,由于取样时基抖动等因素影响,取样过程实际上是非均匀的。
A strategy for equivalent nonuniform time sampling of periodic signals 周期信号等效非均匀采样策略研究
This paper illuminates the theory and application of nonuniform sampling, and develops a hardware system to implement nonuniform sampling based on DSP. 本文主要探讨了非均匀采样的基本理论及实现,并研制出一套基于DSP的非均匀采样系统。
A novel nonuniform periodically sampling method is proposed in this paper. 本文提出一种非均匀周期采样方法,该方法既具有非均匀采样抗混叠的特性,又具有均匀采样的消除混叠频谱噪声的特点。
Multiresolution Edge Detection Based on Nonuniform Sampling and Selective Attention Mechanism 基于非均匀采样及选择注意机制的多分辨率边缘检测
In this paper, the Spectral-Fit method and the reconstruction in time domain method are adopted to eliminate the effect due to azimuth nonuniform sampling with the quality of image being unaffected. 该文采用Spectral-Fit法和时域重构法在不影响图像性能的基础上,消除了非均匀采样带来的影响。
This paper describes the characteristics of a new ( Chebyshev Nonuniform Sampling CNS) model and the corresponding implementation schemes using Systolic array architecture This paper shows that the CNS model has the advantages of simplicity, regularity and fast reconstruction. 本文描述一种新的切匹雪夫非均匀抽样模式的特性和利用脉动阵列结构相应的实现方案。本文证明切匹雪夫非均匀抽样(CNS)模式具有简单、规则和快速重构的优点。
The conclusion proves that by the periodically nonuniform sampling, any bandpass signals can be validly sampled with the sampling rate of two times bandwidth of the bandpass signal. 结论证实了周期非均匀采样能保证任意带通信号以2倍带宽的采样率进行采样。
A Novel Spectrum Analysis Method for Nonuniform Periodically Sampling 一种抗混叠的非均匀周期采样及其频谱分析方法
Principle and Its Application of Periodically Nonuniform Sampling 多阶采样原理及其应用
The fundamental principle of nonuniform sampling wavelet transform is introduced and the processing procedure is presented from the uniform wavelet to nonuniform wavelet. 文中说明了小波的非均匀化过程,从均匀小波得到非均匀小波,以非均匀小波分析非均匀采样信号,得到非均匀采样信号的频谱。
In periodically nonuniform sampling, the sampling rate for a single sampling channel is usually less than the Nyquist rate and accordingly the spectrum of each sample stream is aliasing. 对于周期非均匀采样,由于每个均匀采样流的采样率通常都是小于Nyquist率的,因此,采样信号频谱中会发生频率混叠。
Some nonuniform sampling methods of modelling with optimizing are applied to estimate system parameters and analyse some practical cases. 并用非均匀采样系统建模及优化方法对实际病例进行参数估计和分析。
On the Chebyshev nonuniform sampling technique 关于切匹雪夫非均匀抽样技术
Influence of Sampling Rate on Nonuniform Sampling Discrete Cosine Transform 取样频率对非均匀取样的DCT变换的影响
With the development of high speed data acquisition technique, the research of nonuniform sampling has become an important component of digital signal processing subject. 随着高速数据采集技术的发展,非均匀采样成为数字信号处理领域的重要研究内容。
Because multi-target tracking is very difficult, particle filter algorithm based on nonuniform sampling and kernel-histogram of HSV space is proposed. 针对多目标跟踪中的难点,本文提出了基于HSV核直方图的粒子滤波跟踪算法,并采用了一种基于非均匀样本的重采样算法。
Because the filtration is the critical role of operator, a weighted average filter with nonuniform sampling is proposed on basis of cubic-fit filtering algorithm. The filter can realize filtering and extract uniform data. 其中,针对滤波操作,本文提出了一种基于三次曲面拟合的非均匀采样加权平均滤波器,可以在进行滤波操作的基础上实现数据的均匀提取。