Improved radon-transform-based method to quantify local stationarity

Robert A. Hedges; Bruce W. Suter

doi:10.1117/12.406512

13 November 2000 Improved radon-transform-based method to quantify local stationarity

Robert A. Hedges, Bruce W. Suter

Proceedings Volume 4116, Advanced Signal Processing Algorithms, Architectures, and Implementations X; (2000) https://doi.org/10.1117/12.406512
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Establishing measures for local stationarity is an open problem in the field of time-frequency analysis. One promising theoretical measure, known as the spread, provides a means for quantifying potential correlation between signal elements. In this paper we investigate the issue of generalizing techniques developed by the authors to better estimate the spread of a signal. Existing techniques estimate the spread as the rectangular region of support of the associated expected ambiguity function oriented parallel to the axes. By applying Radon Transform techniques we can produce a parameterized model which describes the orientation of the region of support providing tighter estimates of the signal spread. Examples are provided that illustrate the enhancement of the new method.

Citation Download Citation

Robert A. Hedges and Bruce W. Suter "Improved radon-transform-based method to quantify local stationarity", Proc. SPIE 4116, Advanced Signal Processing Algorithms, Architectures, and Implementations X, (13 November 2000); https://doi.org/10.1117/12.406512

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