An improvement to the multiple window spectrogram using quadratic time-frequency distributions

N. Stevenson, M. Mesbah, B. Boashash

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper suggests an improvement to the multiple window (MW) spectrogram. The improvement was observed when redefining the MW spectrogram in a quadratic time-frequency distribution framework. This alternate view permits the MW method to be interpreted as an application of a single ambiguity domain filter, that consists of the average of each window sequence, to the ambiguity representation of the signal. In addition, the MW spectrogram can be improved by extending the ambiguity domain filter along the Doppler lag (v) axis. This enhanced MW spectrogram has lower variance and bias when estimating several signals in the presence of additive white Gaussian noise, while retaining the desirable properties of the spectrogram such as realness, non-negativity and minimal cross-terms.

Original languageEnglish
Title of host publicationProceedings - 8th International Symposium on Signal Processing and its Applications, ISSPA 2005
Pages651-654
Number of pages4
Volume2
DOIs
Publication statusPublished - 2005
Event8th International Symposium on Signal Processing and its Applications, ISSPA 2005 - Sydney, Australia
Duration: Aug 28 2005Aug 31 2005

Other

Other8th International Symposium on Signal Processing and its Applications, ISSPA 2005
CountryAustralia
CitySydney
Period8/28/058/31/05

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Stevenson, N., Mesbah, M., & Boashash, B. (2005). An improvement to the multiple window spectrogram using quadratic time-frequency distributions. In Proceedings - 8th International Symposium on Signal Processing and its Applications, ISSPA 2005 (Vol. 2, pp. 651-654). [1581022] https://doi.org/10.1109/ISSPA.2005.1581022