Home » Source Code » 分数阶傅立叶变换

分数阶傅立叶变换

山坡羊
2013-10-16 04:42:13
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Description

matlab计算分数阶傅立叶变换。对LFM信号进行加噪处理,通过frft+滤波器然后反frft得到去噪的信号。例程完整,有运行结果。lfm在声呐,雷达方面有巨大的应用。而frft是分数阶的傅立叶变换,通过做p阶变换得到了相应的参数,对lfm参数估计也有很好的作用。
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File list

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Name Size Date
Chirp_and_its_delay.m3.74 kB18-03-13 09:35
Chirp_SNR_Restore.m3.46 kB25-02-13 17:02
Chirp_Sum.m3.83 kB18-03-13 09:44
Diff_Chirp.m3.69 kB25-02-13 19:52
fmlin.m1.54 kB09-08-04 10:00
fmlin2.m1.59 kB25-02-13 20:00
frft.m1.48 kB13-11-08 21:57
Chirp_and_its_delay.m2.67 kB21-03-13 21:46
Chirp_SNR_Restore.m3.45 kB25-02-13 20:26
Chirp_Sum.m2.77 kB21-03-13 23:27
Diff_Chirp.m2.65 kB21-03-13 22:54
frft.m1.48 kB13-11-08 21:57
IdentifiableFrequencySpaceOfChirp.m1.18 kB26-02-13 12:20
men.m587.00 B08-06-09 22:58
readme.txt200.00 B18-03-13 10:38
shiftlr.m755.00 B25-02-13 19:10
shiftmatrix.m522.00 B25-02-13 17:12
shiftud.m171.00 B25-02-13 19:10
SNR_Detection.m357.00 B25-02-13 13:28
test1.asv659.00 B25-02-13 16:36
test1.m3.87 kB25-02-13 20:10
tfrwv.m4.29 kB31-12-04 11:52
work_zrx.m2.76 kB25-02-13 16:20
men.m587.00 B08-06-09 22:58
readme.txt2.25 kB18-03-13 09:49
shiftlr.m755.00 B25-02-13 19:10
shiftmatrix.m522.00 B25-02-13 17:12
shiftud.m171.00 B25-02-13 19:10
SNR_Detection.m357.00 B25-02-13 13:28
test1.m3.87 kB25-02-13 20:10
tfrwv.m4.29 kB31-12-04 11:52
Thumbs.db16.00 kB25-02-13 19:56
work_zrx.m2.76 kB25-02-13 16:20
Thumbs.db88.50 kB25-02-13 14:48
SNR+01.bmp331.80 kB25-02-13 15:25
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FRFT遍历2.bmp3.27 MB25-02-13 19:56
FRFT遍历2.eps3.27 MB25-02-13 19:57
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WVD.bmp331.80 kB25-02-13 19:58
WVD.eps619.06 kB25-02-13 19:57
WVD2.bmp331.80 kB25-02-13 19:58
WVD2.eps3.27 MB25-02-13 19:58
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目标信号.bmp331.80 kB25-02-13 19:59
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阈值分割.bmp331.80 kB25-02-13 19:55
阈值分割.eps10.88 kB25-02-13 19:55
FRFT阶次遍历.bmp333.77 kB25-02-13 19:30
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FRFT阶次遍历2.bmp331.80 kB25-02-13 19:31
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frft.m1.48 kB13-11-08 21:57
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men.m587.00 B08-06-09 22:58
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shiftlr.m755.00 B25-02-13 19:10
shiftmatrix.m522.00 B25-02-13 17:12
shiftud.m171.00 B25-02-13 19:10
SNR_Detection.m357.00 B25-02-13 13:28
test1.asv659.00 B25-02-13 16:36
test1.m3.87 kB25-02-13 20:10
tfrwv.m4.29 kB31-12-04 11:52
work_zrx.m2.76 kB25-02-13 16:20
men.m587.00 B08-06-09 22:58
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readme.txt2.25 kB18-03-13 09:49
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FRFT遍历2.eps3.27 MB25-02-13 19:57
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WVD.bmp331.80 kB25-02-13 19:58
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多径+其他CHIRP.bmp331.80 kB25-02-13 19:58
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目标信号.eps12.15 kB25-02-13 19:59
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FRFT阶次遍历.eps808.38 kB25-02-13 19:30
FRFT阶次遍历2.bmp331.80 kB25-02-13 19:31
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WVD分布图1.bmp331.80 kB25-02-13 19:33
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原始信号.bmp331.80 kB25-02-13 19:28
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多径传输信号.bmp331.80 kB25-02-13 19:36
多径传输信号.eps12.00 kB25-02-13 19:36
多径模拟+噪声与FRFT去噪后信号.bmp331.80 kB25-02-13 19:29
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FRFT遍历2.bmp331.80 kB25-02-13 19:47
FRFT遍历2.eps3.27 MB25-02-13 19:47
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WVD.bmp331.80 kB25-02-13 19:48
WVD.eps591.43 kB25-02-13 19:48
WVD2.bmp331.80 kB25-02-13 19:48
WVD2.eps3.27 MB25-02-13 19:48
多CHIRP联合信号.bmp331.80 kB25-02-13 19:49
多CHIRP联合信号.eps11.84 kB25-02-13 19:49
目标信号.bmp331.80 kB25-02-13 19:49
目标信号.eps12.17 kB25-02-13 19:49
阈值分割.bmp331.80 kB25-02-13 19:45
阈值分割.eps10.73 kB25-02-13 19:45
<简单阈值滤波>0.00 B15-10-13 16:30
<Chirp_and_its_delay>0.00 B15-10-13 16:30
<Chirp_SNR_Restore>0.00 B15-10-13 16:30
<Chirp_Sum>0.00 B15-10-13 16:30
<Diff_Chirp>0.00 B15-10-13 16:30
<SNR_Restore>0.00 B0% 15-10-13
<SUM>0.00 B25-02-13 20:05
<多径+其他类型Chirp干扰>0.00 B15-10-13 16:30
<多径模拟>0.00 B15-10-13 16:30
<来自其他chirp的干扰>0.00 B15-10-13 16:30
<matlab>0.00 B0% 15-10-13
<结果图片>0.00 B15-10-13 16:30
<FRFT>0.00 B16-10-13 14:28
...
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Richard000
2017-11-15

不错,觉得对自己的学习很有帮助。感谢分享,觉得自己毕业有望了。

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分数阶傅立叶变换 (8.04 MB)

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