scholarly journals Iterative local Fourier transform-based high-accuracy wavelength calibration for Fourier transform imaging spectrometer

2020 ◽  
Vol 28 (4) ◽  
pp. 5768
Author(s):  
Yixuan Xu ◽  
Jianxin Li ◽  
Caixun Bai ◽  
Ming Wei ◽  
Jie Liu ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Accuracy ◽  
Imaging Spectrometer ◽  
Wavelength Calibration

IDENTIFICATION OF INTERHARMONICS BASED ON WAVELET PACKET TRANSFORM

2021 ◽  
Vol 3 (1) ◽  
pp. 031-036
Author(s):  
S. A. GOROVOY ◽  
◽  
V. I. SKOROKHODOV ◽  
D. I. PLOTNIKOV ◽  
◽  
...  
Keyword(s):  
Fourier Transform ◽  
Simulation Model ◽  
Frequency Domain ◽  
Time Domain ◽  
Wavelet Packet ◽  
High Accuracy ◽  
Wavelet Packet Transform ◽  
Mathematical Apparatus ◽  
Nonlinear Load ◽  
The Time Domain

This paper deals with the analysis of interharmonics, which are due to the presence of a nonlinear load. The tool for the analysis was a mathematical apparatus - wavelet packet transform. Which has a number of advantages over the traditional Fourier transform. A simulation model was developed in Simulink to simulate a non-stationary non-sinusoidal mode. The use of the wavelet packet transform will allow to determine the mode parameters with high accuracy from the obtained wavelet coefficients. It also makes it possible to obtain information, both in the frequency domain of the signal and in the time domain.

Identification of Natural Bamboo Fibers and Flax Fibers

2013 ◽  
Vol 821-822 ◽  
pp. 153-157 ◽  
Author(s):  
Wei Dong Li ◽  
Xin Hou Wang ◽  
Li Hua Peng
Keyword(s):  
Cluster Analysis ◽  
Fourier Transform ◽  
Near Infrared ◽  
Hierarchical Cluster ◽  
High Accuracy ◽  
Flax Fibers ◽  
First Derivative ◽  
Near Infrared Spectra ◽  
Bamboo Fibers ◽  
The Fourier Transform

In this paper, the method based on the testing of the Fourier transform near infrared (NIR) spectra is proposed to identify natural bamboo fibers and flax fibers. The discrimination models between natural bamboo fibers and flax fibers are established by means of Ward’s algorithm and Hierarchical Cluster Analysis after the first derivative and vector normalization pretreatment. The verification results indicated that these two kinds of fibers could be classified into two separated groups for the identification and the near infrared spectra model is high accuracy.

Field-of-view analysis of a polarization interference Fourier transform imaging spectrometer

2011 ◽  
Vol 50 (27) ◽  
pp. 5351
Author(s):  
Edward DeHoog ◽  
Xiaowei Xia ◽  
Alexander Parfenov ◽  
Min-Yi Shih
Keyword(s):  
Fourier Transform ◽  
Field Of View ◽  
Imaging Spectrometer

Compact fourier-transform imaging spectrometer for small satellite massions

2003 ◽  
Vol 52 (9-12) ◽  
pp. 803-811 ◽  
Author(s):  
Bernd Harnisch ◽  
Winfried Posselt ◽  
Karin Holota ◽  
Heinz Otto Tittel ◽  
Michael Rost
Keyword(s):  
Fourier Transform ◽  
Small Satellite ◽  
Imaging Spectrometer

Study of the Structure of Large Aperture Ultraviolet Fourier Transform Imaging Spectrometer

2014 ◽  
Vol 34 (3) ◽  
pp. 0330001
Author(s):  
刘洋 Liu Yang ◽  
廖宁放 Liao Ningfang ◽  
白廷柱 Bai Tingzhu ◽  
吕航 Lü Hang ◽  
廉玉生 Lian Yusheng
Keyword(s):  
Fourier Transform ◽  
Imaging Spectrometer ◽  
Large Aperture

Fourier Transform Method for Interferogram Analysis with High Accuracy

2015 ◽  
Vol 44 (11) ◽  
pp. 1112004
Author(s):  
粟银 SU Yin ◽  
范琦 FAN Qi ◽  
王云飞 WANG Yun-fei ◽  
杨鸿儒 YANG Hong-ru ◽  
黎高平 LI Gao-ping ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Accuracy ◽  
Transform Method ◽  
Fourier Transform Method

scholarly journals A HIGH ACCURACY CONFORMAL METHOD FOR EVALUATING THE DISCONTINUOUS FOURIER TRANSFORM

2010 ◽  
Vol 109 ◽  
pp. 425-440 ◽  
Author(s):  
Chun-Hui Zhu ◽  
Qing Huo Liu ◽  
Yi Shen ◽  
Lijun Liu
Keyword(s):  
Fourier Transform ◽  
High Accuracy ◽  
Conformal Method

Wavelength calibration and spectral line bending determination of an imaging spectrometer

2009 ◽  
Author(s):  
Yuheng Chen ◽  
Yiqun Ji ◽  
Jiankang Zhou ◽  
Xinhua Chen ◽  
XiaoXiao Wei ◽  
...  
Keyword(s):  
Spectral Line ◽  
Imaging Spectrometer ◽  
Wavelength Calibration
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