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 Platform: |
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Author:james |
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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 Platform: |
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Author:james |
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Description: 自己用编写的雷达线性调频信号产生器，信号幅度为-1~1，其中另外的一些参数可以根据需要改动-themselves with the preparation of the linear FM radar signal generator, the signal amplitude ~ 1-1, which some other parameters can be changed as needed Platform: |
Size: 1024 |
Author:guoyan |
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Description: 传输矩阵法计算啁啾光栅反射谱
本节中给出传输矩阵法计算啁啾光栅反射谱和
时延的完整M at lab 程序实例, 本段代码在
M at lab513 和W indow s2000 环境中运行通过。运行结果如图8 所示。可以改变光栅长度、有效折射率、折射率调制深度、啁啾系数等参数来获得不同参数下光栅反射谱和时延曲线。如果打开“％ 切趾”行的屏蔽符“％ ”则可得到切趾后光栅反射谱和时延特性曲线, 此时计算所得的曲线将比图8 中所示的曲线平滑很多。-Transfer matrix method to calculate reflection spectrum of chirped grating is given in this section transfer matrix method to calculate chirped grating reflection spectrum and the delay of a complete example of M at lab procedures, the above code in M at lab513 and W indow s2000 environment to run through. The results shown in Figure 8. Can change the grating length, the effective refractive index, refractive index modulation depth and chirp coefficient parameters to obtain different parameters of grating reflection spectrum and the time delay curve. If you open Apodization line shielding Fu can be grating after apodization reflection spectrum and the delay characteristic curve, the curve at this time will be calculated as shown in Figure 8 a lot of curve smoothing. Platform: |
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Author:金沧 |
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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. Platform: |
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. Platform: |
Size: 1024 |
Author:long |
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Description: 含未知参数的多分量Chirp信号的分数阶傅里叶分析，希望对大家有用-With unknown parameters of the multi-component Chirp signals in fractional Fourier analysis and hope for all of us Platform: |
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Author:高青松 |
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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) Platform: |
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Author:anhela |
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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. Platform: |
Size: 1024 |
Author:王会彦 |
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Description: 基于频谱细化的线性调频信号的参数估计。首先对中频信号延时相乘然后对产生的序列做FFT，初步算出LFM信号的调频斜率，然后用CHIRP-Z变换精确估计。-Estimated based on the parameters of the linear FM signal spectrum refinement. First of delay multiplied by the IF signal and then do the FFT on the resulting sequence, initially calculated the slope of the LFM signal FM accurate estimate, and then use the CHIRP-Z transform. Platform: |
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Author:孙科 |
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Description: 针对信号自适应chirplet分解未知参数多、实现起来比较困难的特点，文献[1]提出了一种新的chirplet分解快速算法。该算法利用计算信号的二次相位函数，得到其能量分布集中于于信号的调频率曲线上的结论，此时通过谱峰检测可同时获得chirplet调频率、时间中心和幅度的估计；然后通过解线性调频技术获得其初始频率和宽度的估计，仿真结果验证了本文算法的有效性。
-For the signal adaptive the chirplet decomposition of unknown parameters to achieve difficult to literature [1] proposed a new fast algorithm for chirplet decomposition. The algorithm makes use of the secondary phase of the calculated signal function, the conclusion focused on energy distribution curve to tune the frequency of the signal by the peak detection chirplet tune frequency, time center and amplitude estimates then by solving chirp technology to obtain the initial frequency and width is estimated that the simulation results demonstrate the effectiveness of the proposed algorithm. Platform: |
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Author:nanyi5452 |
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Description: 计算啁啾，均匀，取样光栅透射谱。可以改变周期，占空比，长度等各种参数-Calculated chirp, evenly sampled grating transmission spectrum. Can change the various parameters of the period, duty cycle, length, etc. Platform: |
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Author:Guolu |
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Description: Wavelength at carrier frequency
Tr=1.5e-6 chirp pusle duration 1.5us
Br=150e6 chirp frequebcy bandwidth 150Mhz
Kr=Br/Tr chirp rate
observating strip parameters
Rc=3000 Range distance to center of target area,3000m
R0=150 Target area in range is within [Rc-R0,Rc+R0]
X0=200 Target area in cross-range is within [-X0,X0]-Wavelength at carrier frequency
Tr=1.5e-6 chirp pusle duration 1.5us
Br=150e6 chirp frequebcy bandwidth 150Mhz
Kr=Br/Tr chirp rate
observating strip parameters
Rc=3000 Range distance to center of target area,3000m
R0=150 Target area in range is within [Rc-R0,Rc+R0]
X0=200 Target area in cross-range is within [-X0,X0] Platform: |
Size: 3072 |
Author:Alex |
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Description: 运用离散幅度变换对二次调频信号进行参数估计-Use Discrete Amplitude Transform to estimate parameters of a chirp signal Platform: |
Size: 1024 |
Author:QRLU |
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Description: 提出一种联合循环平稳法与多普勒模糊数搜索法的多分量Chirp信号相位参数精确估计算法，与已有循环平稳算法相比，该算法的相位参数取值范围不受限，低信噪比下的相位参
数估计精度约提高30 dB-Smooth fuzzy numbers and Doppler search method for multi-component the Chirp signal phase parameters the precise estimation algorithm, compared with existing cyclostationary algorithm proposed combined cycle, the phase of the algorithm parameters range is not limited by the low signal-to-noise than under the phase parameter estimation accuracy is improved by about 30 dB Platform: |
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Author:forevr |
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Search - chirp parameters