Journal ArticleDOI
Windowed discrete Fourier transform for shifting data
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TLDR
The algorithms developed in this paper update the DFT to reflect the modified window contents, using less computation than directly evaluating the modified transform via the FFT algorithm, which reduces the computational order by a factor of log 2 N for both the 1-D and 2-D cases.About:
This article is published in Signal Processing.The article was published on 1999-04-01. It has received 15 citations till now. The article focuses on the topics: Window function & Scale space implementation.read more
Citations
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Journal ArticleDOI
Dielectric spectroscopy data treatment: I. Frequency domain
TL;DR: In this article, the authors considered the computational methods for complex dielectric permittivity data treatment and proposed a method based on a penalized maximum likelihood approach, for obtaining a smooth estimate for the model parameters expressed as functions of temperature.
Journal ArticleDOI
Passive wireless strain monitoring of tyres using capacitance and tuning frequency changes
Ryosuke Matsuzaki,Akira Todoroki +1 more
TL;DR: In this paper, the authors proposed a passive wireless sensor for in-service strain monitoring of tyres of automobiles. But, this method is very simple and useful, but it requires a battery to activate the oscillating circuit.
Journal ArticleDOI
Windowed discrete cosine and sine transforms for shifting data
Barry G. Sherlock,Y. P. Kakad +1 more
TL;DR: An algorithm is developed to simultaneously update the DCT and DST to reflect inclusion of r, where 1⩽ r ⩽ N −1, additional data points and removal of r old points from the signal.
Dissertation
Développement d'un système d'imagerie microonde multistatique ultra large bande : application à la détection d'objets en régime temporel et fréquentiel
TL;DR: The Systeme d'Imagerie Microonde a Impulsions Synthetiques (SIMIS) as discussed by the authors is a system designed for the acquisition of micro-objects, i.e., objects that can be acquired by a reseau de capteurs lineaire or plan.
Journal ArticleDOI
Transform domain technique for windowing the DCT and DST
Barry G. Sherlock,Y.P. Kakad +1 more
TL;DR: An algorithm is developed to apply Hann, Hamming, Blackman and related windows directly in the transform domain for the discrete cosine transform and discrete sine transform.
References
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Journal ArticleDOI
On the use of windows for harmonic analysis with the discrete Fourier transform
TL;DR: A comprehensive catalog of data windows along with their significant performance parameters from which the different windows can be compared is included, and an example demonstrates the use and value of windows to resolve closely spaced harmonic signals characterized by large differences in amplitude.
Journal ArticleDOI
Fingerprint enhancement by directional Fourier filtering
TL;DR: A new method of enhancing fingerprint images is described, based upon nonstationary directional Fourier domain filtering, which leads to significant improvements in the speed and accuracy of the AFIS.
Book
Modern signals and systems
TL;DR: The Fourier series Fourier transforms the z- and laplace transforms applications to signal processing and digital filtering applications to communication feedback and applications to automatic control supplement reviews and SIGSYS tutorial.
Journal ArticleDOI
Some novel windows and a concise tutorial comparison of window families
N. Geckinli,D. Yavuz +1 more
TL;DR: In this article, a comparison of the well-known and novel windows in terms of their frequency domain properties is given, and it is concluded that Kaiser, modified Kaiser, Tukey, and three-coefficient window families appear to be the best of the known windows of 6, 12, and 18 dB/oct decay rates.