离散傅氏变换

离散傅氏变换

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Geography SubjectGIScience & Remote SensingOthers

Detailed Description

离散傅氏变换

 

式中,是时间序列的样本数量;是虚数符号;是第样本值。

利用Euler方程,DFT公式可分解为三角函数形式:

式中,是角度项。

Euler方程代入DFT表达式,则:

式中,是平均值;是一阶三角函数系数,依次类推。

 

参考文献:

MoodyAJohnsonD M:利用离散傅氏变换从AVHRR得到陆地表面生物气候学特性。Remote Sensing of Environment2001,75

How to cite

《资源环境数学模型手册》 (2018). 离散傅氏变换, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/e8c22846-8779-4e8f-a702-39d17f777ea2
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Contributor

contributed at 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feed back

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