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大小: 70KB文件类型: .zip金币: 2下载: 1 次发布日期: 2021-05-07
- 语言: Matlab
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资源简介
分数阶傅里叶matlab代码,share一下。
代码片段和文件信息
% DiscreteTFDs
% Version 0.8 08-Jul-1999
%
% Changes - Log of changes from previous versions.
% Copyright - Copyright Information
% DTFDPath.m - File that needs to called from your startup.m file.
% GNU_GPL - GNU General Public License
% Makefile - Package maintenance.
% README - Installation Information
% ToDo - Wish list of changes to make.
%
% Chirplets - Chirplet Decomposition via ML Estimation
% KandQ - compute statistics of the Fisher information
% angle2cr - convert an angle to a chirp rate
% best_chirplet - find the best chirplet in a signal
% cr2angle - convert a chirp rate to an angle
% crlb - compute the Cramer-Rao lower bound for one chirplet
% est_c - estimate the chirp rate locally
% est_cd_global - estimate the chirp rate and duration globally
% est_d - estimate the duration locally
% est_tf - estimate the location in time and frequency
% f_chirp - used by the optimization procedure
% find_chirplets - find the best Q chirplets in a signal
% fisher - compute the Fisher information matrix
% g_chirp - used by the optimization procedure
% hessian - computes a hessian matrix of the likelihood function
%
% Demos - Various Demonstrations
% demo_chirplets - demo of chirplet decomposition with ML estimation
% demo_cohen - demo comparing the different Cohen classes
% demo_localized - demo of localized distribution
% demo_ltvf - demo of linear time-varying filtering
% demo_tcd - demo of the time-chirp distribution
% demo_wigner4 - demo of the type IV Wigner distribution
%
% Symplectic - Symplectic Transformations
% chirp2rot - convert chirplet parameters to rotation parameters
% fracft - fractional Fourier transform
% freq_shear - chirp convolution
% scale - scale a signal
% time_shear - chirp multiplication
%
% Type I - Compute TFDs in the Type I Cohen class
% choi_williams1
% lacf1
% margenau_hill1
% rihaczek1
% spec1
% stft1
% smooth1
% wigner1
%
% Type II - Compute TFDs in the Type II Cohen class
% binomial2
% born_jordan2
% lacf2
% levin2
% margeneau_hill2
% page2
% qwigner2
% rihaczek2
% spec2
% stft2
%
% Type IV - Compute TFDs in the Type IV Cohen class
% binomial4
% margenau_hill4
% qwigner4 (even length signals only)
% richman
% rihaczek4
% spec4
% stft4
% wigner4 (odd length signals only)
%
% Quartic - some quartic functions from my research
% laf - the local ambiguity function
% localized - a TFD that is localized for quadratic chirps
% lwigner - L-Wigner distributions
% tcd - a distribution of time and chirp rate
%
% Utils - Some useful utilities.
% acf - compute the auto-correlation function
% add_noise - add white gaussian noise to a signal
% chirplets - make a signal that is a sum of chirplets
% cconv - circular convolution
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 2522 1999-07-08 16:40 DiscreteTFDs\Changes
目录 0 2009-09-29 21:00 DiscreteTFDs\Chirplets\
文件 372 1999-02-02 10:07 DiscreteTFDs\Chirplets\angle2cr.m
文件 2879 1999-07-08 11:14 DiscreteTFDs\Chirplets\best_chirplet.m
文件 388 1999-02-02 10:06 DiscreteTFDs\Chirplets\cr2angle.m
文件 526 1999-02-02 10:06 DiscreteTFDs\Chirplets\crlb.m
文件 1594 1999-05-07 10:43 DiscreteTFDs\Chirplets\est_c.m
文件 1624 1999-05-18 10:43 DiscreteTFDs\Chirplets\est_cd_global.m
文件 1494 1999-05-18 10:44 DiscreteTFDs\Chirplets\est_d.m
文件 1566 1999-05-18 10:44 DiscreteTFDs\Chirplets\est_tf.m
文件 402 1999-05-18 10:44 DiscreteTFDs\Chirplets\f_chirp.m
文件 2823 1999-05-18 16:04 DiscreteTFDs\Chirplets\find_chirplets.m
文件 1312 1999-02-02 10:05 DiscreteTFDs\Chirplets\fisher.m
文件 916 1999-05-18 10:47 DiscreteTFDs\Chirplets\g_chirp.m
文件 2749 1999-05-18 10:47 DiscreteTFDs\Chirplets\hessian.m
文件 7959 1999-02-02 10:07 DiscreteTFDs\Chirplets\KandQ.m
文件 3847 1999-07-08 16:55 DiscreteTFDs\Contents.m
文件 987 1999-02-02 10:22 DiscreteTFDs\Copyright
目录 0 2009-09-29 21:00 DiscreteTFDs\Demos\
文件 2490 1999-07-08 11:51 DiscreteTFDs\Demos\demo_chirplets.m
文件 4711 1999-05-18 10:49 DiscreteTFDs\Demos\demo_cohen.m
文件 2804 1999-04-20 15:10 DiscreteTFDs\Demos\demo_localized.m
文件 1262 1999-05-18 10:49 DiscreteTFDs\Demos\demo_ltvf.m
文件 2832 1999-05-18 10:50 DiscreteTFDs\Demos\demo_tcd.m
文件 3831 1999-05-18 10:50 DiscreteTFDs\Demos\demo_wigner4.m
文件 961 1999-07-08 16:54 DiscreteTFDs\DTFDPath.m
文件 15145 1999-02-02 10:23 DiscreteTFDs\GNU_GPL
文件 357 1999-07-08 16:53 DiscreteTFDs\Makefile
目录 0 2009-09-29 21:02 DiscreteTFDs\Quartic\
文件 944 1999-02-02 10:02 DiscreteTFDs\Quartic\laf.m
文件 1799 1999-02-02 10:02 DiscreteTFDs\Quartic\localized.m
............此处省略58个文件信息
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