Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals
<p dir="ltr">This paper introduces Zoom TFD, a time-frequency decomposition (TFD) method designed for the high-resolution analysis of non-stationary signals, achieving optimal energy concentration, high time-frequency resolution, and inherent cross-term suppression. Traditional TFDs,...
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2025
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| _version_ | 1864513533610295296 |
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| author | Nisreen Said Amer (22503752) |
| author2 | Samir Brahim Belhaouari (16855434) |
| author2_role | author |
| author_facet | Nisreen Said Amer (22503752) Samir Brahim Belhaouari (16855434) |
| author_role | author |
| dc.creator.none.fl_str_mv | Nisreen Said Amer (22503752) Samir Brahim Belhaouari (16855434) |
| dc.date.none.fl_str_mv | 2025-06-03T06:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1109/access.2025.3574237 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Zooming_Into_Precision_The_Zoom_TFD_for_High-Resolution_Analysis_of_Non-Stationary_Signals/30455564 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Biomedical engineering Communications engineering Resolution non-stationary signals adaptive Fourier transform cross-term suppression Heisenberg uncertainty Boashash-Sucic performance metric signal processing Time-frequency analysis Kernel Signal resolution Interference Fourier transforms Accuracy Estimation Energy resolution Uncertainty Frequency estimation |
| dc.title.none.fl_str_mv | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">This paper introduces Zoom TFD, a time-frequency decomposition (TFD) method designed for the high-resolution analysis of non-stationary signals, achieving optimal energy concentration, high time-frequency resolution, and inherent cross-term suppression. Traditional TFDs, such as the Wigner-Ville Distribution (WVD) and Choi-Williams Distribution (CWD), often struggle with resolution trade-offs and cross-term interference, while methods like Zhao-Atlas-Marks Distribution (ZAMD) attempt to mitigate these effects at the cost of higher computational complexity. Zoom TFD takes a different approach, integrating adaptive Fourier Transform windowing with a minimization-based spectral selection mechanism. This formulation enables the dynamic refinement of the time-frequency representation by selectively enhancing dominant spectral components while suppressing noise and unwanted harmonics, ensuring a more precise and focused analysis. The effectiveness of the Zoom TFD is assessed against ten leading state-of-the-art TFDs using the Boashash—Sucic Normalized Instantaneous Resolution and Heisenberg uncertainty performance measures. This evaluation is conducted across a variety of experimental and simulated signals, such as frequency-modulated chirps and multi-component signals. The results indicate that the Zoom Time-Frequency Distribution (TFD) consistently outperforms existing methods. It achieves the highest energy concentration and the lowest uncertainty, demonstrating its robustness for precise and interference-free time-frequency analysis. This work establishes the Zoom TFD as a powerful tool for signal analysis, setting a new benchmark for high-resolution time-frequency representation applications, ranging from biomedical engineering to communications.</p><h2>Other Information</h2><p dir="ltr">Published in: IEEE Access<br>License: <a href="https://creativecommons.org/licenses/by/4.0/deed.en" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1109/access.2025.3574237" target="_blank">https://dx.doi.org/10.1109/access.2025.3574237</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_c43a9880cb5918fd17ebf5d54cdf74ea |
| identifier_str_mv | 10.1109/access.2025.3574237 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30455564 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary SignalsNisreen Said Amer (22503752)Samir Brahim Belhaouari (16855434)EngineeringBiomedical engineeringCommunications engineeringResolutionnon-stationary signalsadaptive Fourier transformcross-term suppressionHeisenberg uncertaintyBoashash-Sucic performance metricsignal processingTime-frequency analysisKernelSignal resolutionInterferenceFourier transformsAccuracyEstimationEnergy resolutionUncertaintyFrequency estimation<p dir="ltr">This paper introduces Zoom TFD, a time-frequency decomposition (TFD) method designed for the high-resolution analysis of non-stationary signals, achieving optimal energy concentration, high time-frequency resolution, and inherent cross-term suppression. Traditional TFDs, such as the Wigner-Ville Distribution (WVD) and Choi-Williams Distribution (CWD), often struggle with resolution trade-offs and cross-term interference, while methods like Zhao-Atlas-Marks Distribution (ZAMD) attempt to mitigate these effects at the cost of higher computational complexity. Zoom TFD takes a different approach, integrating adaptive Fourier Transform windowing with a minimization-based spectral selection mechanism. This formulation enables the dynamic refinement of the time-frequency representation by selectively enhancing dominant spectral components while suppressing noise and unwanted harmonics, ensuring a more precise and focused analysis. The effectiveness of the Zoom TFD is assessed against ten leading state-of-the-art TFDs using the Boashash—Sucic Normalized Instantaneous Resolution and Heisenberg uncertainty performance measures. This evaluation is conducted across a variety of experimental and simulated signals, such as frequency-modulated chirps and multi-component signals. The results indicate that the Zoom Time-Frequency Distribution (TFD) consistently outperforms existing methods. It achieves the highest energy concentration and the lowest uncertainty, demonstrating its robustness for precise and interference-free time-frequency analysis. This work establishes the Zoom TFD as a powerful tool for signal analysis, setting a new benchmark for high-resolution time-frequency representation applications, ranging from biomedical engineering to communications.</p><h2>Other Information</h2><p dir="ltr">Published in: IEEE Access<br>License: <a href="https://creativecommons.org/licenses/by/4.0/deed.en" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1109/access.2025.3574237" target="_blank">https://dx.doi.org/10.1109/access.2025.3574237</a></p>2025-06-03T06:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1109/access.2025.3574237https://figshare.com/articles/journal_contribution/Zooming_Into_Precision_The_Zoom_TFD_for_High-Resolution_Analysis_of_Non-Stationary_Signals/30455564CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/304555642025-06-03T06:00:00Z |
| spellingShingle | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals Nisreen Said Amer (22503752) Engineering Biomedical engineering Communications engineering Resolution non-stationary signals adaptive Fourier transform cross-term suppression Heisenberg uncertainty Boashash-Sucic performance metric signal processing Time-frequency analysis Kernel Signal resolution Interference Fourier transforms Accuracy Estimation Energy resolution Uncertainty Frequency estimation |
| status_str | publishedVersion |
| title | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| title_full | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| title_fullStr | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| title_full_unstemmed | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| title_short | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| title_sort | Zooming Into Precision: The Zoom TFD for High-Resolution Analysis of Non-Stationary Signals |
| topic | Engineering Biomedical engineering Communications engineering Resolution non-stationary signals adaptive Fourier transform cross-term suppression Heisenberg uncertainty Boashash-Sucic performance metric signal processing Time-frequency analysis Kernel Signal resolution Interference Fourier transforms Accuracy Estimation Energy resolution Uncertainty Frequency estimation |