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Home> Journals> J. Electron. Imag.> Volume 14> Issue 2>Article
1 April 2005New instantaneous frequency estimation method based on image processing techniques
Monica Borda,Ioan Nafornita,Dorina V. Isar, Alexandru N. Isar
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Monica Borda,1 Ioan Nafornita,2 Dorina V. Isar,2 Alexandru N. Isar2

1Univ. Tehnica Cluj-Napocã (Romania)
2Univ. Politehnica Timisoara (Romania)
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Abstract
The aim of this paper is to present a new method for the estimation of the instantaneous frequency of a frequency modulated signal, corrupted by additive noise. Any time-frequency representation of an acquired signal is concentrated around the instantaneous frequency law of its useful component (the projection of the ridges of the time-frequency representation on the time-frequency plane) and realizes the diffusion of its noise component. So, extracting the ridges of the time-frequency representation, the instantaneous frequency of its useful component can be estimated. In this paper a new time-frequency representation is proposed. Using the image of this new time-frequency representation, its ridges can be extracted with the aid of some mathematical morphology operators. This is a ridges detection mechanism producing the projection on the time-frequency plane. This projection represents the result of the proposed estimation method. Some simulations prove the qualities of this method.
©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)
Monica Borda,Ioan Nafornita,Dorina V. Isar, andAlexandru N. Isar"New instantaneous frequency estimation method based on image processing techniques," Journal of Electronic Imaging 14(2), 023013 (1 April 2005).https://doi.org/10.1117/1.1901677
Published: 1 April 2005
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Cited by 9 scholarly publications.
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KEYWORDS
Signal to noise ratio
Time-frequency analysis
Interference (communication)
Mathematical morphology
Error analysis
Image filtering
Image processing
Denoising
Statistical analysis
Binary data
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Monica Borda, Ioan Nafornita, Dorina V. Isar, Alexandru N. Isar, "New instantaneous frequency estimation method based on image processing techniques," J. Electron. Imag. 14(2) 023013 (1 April 2005) https://doi.org/10.1117/1.1901677
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