Fractional Fourier transform for elliptical Gaussian beam in spatial-frequency domain

Optik ◽  
2003 ◽  
Vol 114 (10) ◽  
pp. 433-436 ◽  
Author(s):  
Yangjian Cai ◽  
Qiang Lin
Keyword(s):  
Fourier Transform ◽  
Spatial Frequency ◽  
Gaussian Beam ◽  
Frequency Domain ◽  
Fractional Fourier Transform ◽  
Spatial Frequency Domain

Measurement of Fine-Particle-Velocity under Spatial Frequency Domain Using a Fourier Transform Spectrometer

1999 ◽  
Vol 38 (Part 1, No. 5B) ◽  
pp. 3116-3119
Author(s):  
Koichi Mizutani ◽  
Masahiro Yamazaki ◽  
Masahiro Yoshioka ◽  
Keinosuke Nagai
Keyword(s):  
Fourier Transform ◽  
Spatial Frequency ◽  
Frequency Domain ◽  
Particle Velocity ◽  
Fine Particle ◽  
Fourier Transform Spectrometer ◽  
Spatial Frequency Domain

scholarly journals Sliding signal processing in telecommunication networks based on two-dimensional discrete Fourier transform

2019 ◽  
Vol 30 ◽  
pp. 04013
Author(s):  
Vladimir Ponomarev ◽  
Olga Ponomareva ◽  
Alexey Ponomarev ◽  
Natalya Smirnova
Keyword(s):  
Signal Processing ◽  
Fourier Transform ◽  
Spatial Frequency ◽  
Frequency Domain ◽  
Discrete Fourier Transform ◽  
Telecommunication Networks ◽  
Mathematical Representation ◽  
Two Dimensional ◽  
Discrete Signals ◽  
Spatial Frequency Domain

A method of vertical sliding processing of two-dimensional discrete signals in the spatial frequency domain is proposed — a method of fast vertically sliding two-dimensional discrete Fourier transform. The mathematical representation of the two-dimensional discrete Fourier transform in algebraic and matrix form is considered. An effective method of vertically sliding two-dimensional discrete Fourier transform is proposed. The algorithm developed in the framework of the proposed method allows calculating the coefficients (bins) of this transformation in real time.

scholarly journals Preclinical evaluation of spatial frequency domain-enabled wide-field quantitative imaging for enhanced glioma resection

2017 ◽  
Vol 22 (7) ◽  
pp. 076007 ◽  
Author(s):  
Mira Sibai ◽  
Carl Fisher ◽  
Israel Veilleux ◽  
Jonathan T. Elliott ◽  
Frederic Leblond ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Frequency Domain ◽  
Quantitative Imaging ◽  
Wide Field ◽  
Preclinical Evaluation ◽  
Glioma Resection ◽  
Spatial Frequency Domain
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