Next Article in Journal
Learning to See the Hidden Part of the Vehicle in the Autopilot Scene
Previous Article in Journal
Pano-RSOD: A Dataset and Benchmark for Panoramic Road Scene Object Detection
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle

One Technique to Enhance the Resolution of Discrete Fourier Transform

1
Department of Automation and Control Processes, St. Petersburg Electrotechnical University “LETI”, Saint Petersburg 197376, Russia
2
Youth Research Institute, St. Petersburg Electrotechnical University “LETI”, Saint Petersburg 197376, Russia
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(3), 330; https://doi.org/10.3390/electronics8030330
Received: 31 December 2018 / Revised: 15 February 2019 / Accepted: 14 March 2019 / Published: 18 March 2019
(This article belongs to the Section Circuit and Signal Processing)
  |  
PDF [5748 KB, uploaded 18 March 2019]
  |  

Abstract

Discrete Fourier transform (DFT) is a common analysis tool in digital signal processing. This transform is well studied and its shortcomings are known as well. Various window functions (e.g., Hanning, Blackman, Kaiser) are often used to reduce sidelobes and to spread the spectrum. In this paper, we introduce a transformation that allows removing the sidelobes of the Fourier transform and increasing the resolution of the DFT without changing the time sample. The proposed method is based on signal phase analysis. We give the comparison of the proposed approach with known methods based on window functions. The advantages and disadvantages of the proposed technique are explicitly shown. We also give a set of examples illustrating the application of our technique in some practical applications, including engine vibration analysis and a short-range radar system. View Full-Text
Keywords: Fourier transform; discrete Fourier transform; fast Fourier transform; sidelobes reduction; DFT resolution Fourier transform; discrete Fourier transform; fast Fourier transform; sidelobes reduction; DFT resolution
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Kanatov, I.; Kaplun, D.; Butusov, D.; Gulvanskii, V.; Sinitca, A. One Technique to Enhance the Resolution of Discrete Fourier Transform. Electronics 2019, 8, 330.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Electronics EISSN 2079-9292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top