Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-3-6391-5161-9 |
Объём: | 152 страниц |
Масса: | 252 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
Novel time-frequency analysis techniques are proposed for deterministic signals. We show that among all linear time-frequency representations only the short-time Fourier transformation (STFT) family satisfies both the shift-invariance and rotation-invariance properties in time, frequency and all fractional Fourier domains. The time-frequency domain localization by STFT is characterized by introducing a novel generalized time-bandwidth product (GTBP) definition, which is an extension of the time-bandwidth product on the fractional Fourier domains. GTBP provides a rotation-independent measure of compactness for mono-component signals. The GTBP optimal STFT is a well-localized and high resolution time-frequency representation providing optimal results for chirp-like signals that are encountered in a variety of application areas including radar, sonar, seismic, and biological signal processing. An improved GTBP optimal STFT analysis is obtained for signals with non-convex time-frequency support and its computationally efficient form is presented. Finally, we extend these ideas from time-frequency distributions to joint fractional Fourier domain representations.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.