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Description: 信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、FIR和Lattice结构；IIR滤波器设计包括模拟和数字低通、高通、带通与带阻滤波器设计，以及基于冲激响应不变法和双线性Z变换法的IlR滤波器设计等；FIR滤波器设计包括基于窗函数、频率抽样法和切比雪大逼近法的FIR滤波器设计；平稳信号分析包括经典功率谱估计、基于参数模型的功率谱估计和基于非参数模型的功率谱估计；非平稳信号分析包括STFT变换、Gabor展开、Wigner-Ville分布与Choi-Williams分布；非高斯信号分析包括基于非参数法的双谱估计、基于参数模型的双谱估计，以及双谱估计的应用；信号处理的GUI实现包括滤波器设计与分析的FDATool工具和滤波器设计与信号分析的SPTool工具。-signals and systems based on knowledge, including continuous signal with the model, discrete signal and model; Common signals include transform Z transform, chirp Z-transform, FFT transform. DCT and Hilbert transform; Discrete system architecture including IIR, FIR and Lattice structure; IIR filter design, including analog and digital low-pass, high-pass, band-pass and band stop filter design, Based on the impulse response of the same law and bilinear Z transform the IlR filter design; FIR filter design including on the basis of the window function, frequency sampling and snow all over the big approximation of FIR filter design; stationary signal analysis include classical power spectrum estimation, Based on the model parameters of the power spectrum estimation and non- parametric model b
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Author: james |
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Description: 三个分段相连的信号的傅里叶变换和时频分析；Chirp 信号的傅里叶变换和时频分析；信号的子带分解-Linked to three sub-signals Fourier transform and time-frequency analysis Chirp signal Fourier transform and time-frequency analysis signal subband decomposition
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Author: 李红 |
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Description: 基于chirp信号和Multitone信号的频率特性测试方法研究，采用MATLAB仿真，是最新的研究成果。-Based on the chirp signal and the signal frequency characteristics Multitone testing methods study using MATLAB simulation, is the latest research results.
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Size: 5120 |
Author: wpq |
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Description: 用功率谱的方法求系统频率特性，采用MATLAB仿真，输入信号为Chirp信号和Multitone信号。-Using power spectrum method for frequency characteristics of the system using MATLAB simulation, the input signal for the Chirp signal and Multitone signal.
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Size: 2048 |
Author: wpq |
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Description: The frequency domain plays an important role in image
processing to smooth, enhance, and detect edges of images. Although
image data typically does not include imaginary values, the fast Fourier
transform (FFT) has been used for obtaining spectra. In this paper,
the fast Hartley transform (FHT) is used to transform two-dimensional
image data. Because the Hartley transform is real valued, it does
not require complex operations. Both spectra and autocorrelations of
two-dimensional ultrasound images of normal and abnormal livers were
computed.
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Author: archit |
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Description: steppedchirp子函数产生一个子脉冲数为N的步进频信号，子脉冲为chirp信号，参数可在main函数中设置，结果保存在数组y[]中。-Functions steppedchirp pulses generated for a subset of N step-frequency signal, sub-pulses for chirp signal parameters can be set up in the main function, the result stored in the array y [] in.
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Size: 1024 |
Author: long |
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Description: steppedchirp子函数产生一个子脉冲数为N的步进频信号，子脉冲为chirp信号，参数可在main函数中设置，结果保存在数组y[]中。-Functions steppedchirp pulses generated for a subset of N step-frequency signal, sub-pulses for chirp signal parameters can be set up in the main function, the result stored in the array y [] in.
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Size: 1024 |
Author: long |
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Description: a program is generating a signal (harmonic or chirp signal (linear-frequency modulation)) for performing correlation function, which was noised by gaussian or with a noise has a uniform distribution with appropriate parameters (expectation value and variance)-a program is generating a signal (harmonic or chirp signal (linear-frequency modulation)) for performing correlation function, which was noised by gaussian or with a noise has a uniform distribution with appropriate parameters (expectation value and variance)
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Author: anhela |
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Description: 产生一个chirp信号，给出时域及频域特性。利用匹配滤波器进行滤波。如果有延时也能正确滤波。-Generate a chirp signal, given the time domain and frequency domain characteristics. Filtering using matched filter. If there is delay filter can correct.
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Size: 2048 |
Author: princess |
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Description: 有两个程序一个是关于frft的源程序，一个是应用frft对线性调频信号进行检测的程序，原理是以变换阶数（不同的分数阶域）为变量对观测信号进行分数阶变换，形成信号能量在时频平面上的二维分布，在此平面上按阈值进行峰值点的二维搜索即可检测线性调频信号并估计其参数。-There are two procedures one on frft the source, one application frft linear FM signal detection process, the principle is to transform the order of (different fractional domain) as the independent variables on the observed fractional signal change, the formation of signal energy in two-dimensional time-frequency plane distribution in this plane, the peak threshold value by two-dimensional linear FM signal can be detected search and estimate its parameters.
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Size: 1024 |
Author: 王会彦 |
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Description: 切普信号生成，可以改变信号的起始频率和最终频率。-Be able to generate a linear-FM “chirp” signal that sweeps in frequency fromω1 = 2pi*f1 to ω1 = 2pi*f2 as time goes from t = 0 to T2. You can change any of these values.
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Size: 35840 |
Author: 是大大的 |
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Description: 线性调频信号的时域，幅频等有关的程序，成功运行-Chirp signal in time domain, amplitude and frequency and other relevant procedures, successful operation
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Size: 1024 |
Author: 高竞 |
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Description: 线形调频信号特性仿真，包括其频率特性，脉冲压缩特性等-Simulation of linear FM signal characteristics, including their frequency, pulse compression characteristics
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Size: 2048 |
Author: lucent |
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Description: 完整的啁啾补偿算法 频率啁啾激光场的读出频谱特性的恢复-Chirp compensation algorithm frequency chirped laser field to read out the spectral characteristics of the recovery
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Size: 35840 |
Author: 王夏洋 |
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Description: 获得线性调频信号，通过程序仿真线性调频信号的性能。-Get chirp signal, linear FM signal simulation performance by the program.
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Size: 4096 |
Author: 何兴宇 |
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Description: 线性调频信号的速度多普勒模糊函数，有三维以及二维截面图-The speed of linear frequency modulation signal doppler fuzzy function, there are three dimensional and two dimensional section graph
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Size: 4096 |
Author: 萌 |
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Description: 线性调频信号实现以及匹配滤波器进行脉冲压缩-linear frequency signal
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Size: 1024 |
Author: jzf |
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Description: 该文章讲述了FFT变换的局限性，提出了用chirp-z变换改进的方法，并比较了其效果。-This article describes the limitations of FFT transform, a method using chirp-z transform improved, and compared its effects.
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Size: 156672 |
Author: zhouxuejun |
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Description: 包含了雷达系统中线性调频信号的时频仿真,匹配滤波和去调频两种压缩算法以及回波信号的模拟-When the system contains a radar frequency chirp signal simulation, and the simulation algorithm and matched filtering and echo signal to FM two compression
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Size: 8192 |
Author: 瑞瑞波斯 |
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Description: 产生OFDM Chirp波形，包括时域表示和频域表示，用于mimo雷达，且附有参考文献，里面有波形的时频域表示，以便进一步研究(this matlab code files were used to produce ofdm chirp waveform which used in mimo radar,the waveform are representation in time domain and frequency domain.furthermore,the references are provided for further explore)
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Size: 1763328 |
Author: 出乡关
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