Reducing noise in the time-frequency representation using sparsity promoting kernel design

Branka Jokanović; Moeness G. Amin; Yimin D. Zhang

doi:10.1117/12.2050894

23 May 2014 Reducing noise in the time-frequency representation using sparsity promoting kernel design

Branka Jokanović, Moeness G. Amin, Yimin D. Zhang

Proceedings Volume 9109, Compressive Sensing III; 91090B (2014) https://doi.org/10.1117/12.2050894
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

Missing samples in the time domain introduce noise-like artifacts in the ambiguity domain due to their de facto zero values assumed by the bilinear transform. These artifacts clutter the dual domain of the time-frequency signal representation and obscures the time-frequency signature of single and multicomponent signals. In order to suppress the artifacts influence, we formulate a problem based on the sparsity aware kernel. The proposed kernel design is more robust to the artifacts caused by the missing samples.

Citation Download Citation

Branka Jokanović, Moeness G. Amin, and Yimin D. Zhang "Reducing noise in the time-frequency representation using sparsity promoting kernel design", Proc. SPIE 9109, Compressive Sensing III, 91090B (23 May 2014); https://doi.org/10.1117/12.2050894

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