Introducing a third-order Wigner distribution
نویسندگان
چکیده
منابع مشابه
Wigner distribution transformations in high-order systems
By combining the definition of the Wigner distribution function (WDF) and the matrix method of optical system modeling, we can evaluate the transformation of the former in centered systems with great complexity. The effect of stops and lens diameter are also considered and are shown to be responsible for non-linear clipping of the resulting WDF in the case of coherent illumination and non-linea...
متن کاملWigner time-frequency distribution of high-order harmonics
We investigate the time-frequency characteristics of high-order harmonics generated in atomic gases by intense femtosecond laser pulses, using the Wigner distribution function. The dynamically induced chirp of high harmonics is calculated both quantum mechanically and semiclassically, and a good agreement between them is reached as long as the tunneling effect is properly taken into account. Us...
متن کاملThird-order inference for the Weibull distribution
Recent third-order likelihood analysis theory is applied to obtain improved confidence intervals for scalar component interest parameters of the Weibull model. This theory involves implicit but appropriate conditioning and marginalization. Both the censored and complete Weibull models are examined where primary interest is focussed on assessing the shape, scale or median parameter. The simulati...
متن کاملA Weighted Decomposition of the Wigner Distribution
The Wigner distribution (WD) can be decomposed into a linear combination of elementary WDs. Slow-oscillatory elementary WDs and fast-oscillatory elementary WDs mainly contribute to auto-terms and cross-terms, respectively. Using a weight function to keep slow-oscillatory elementary WDs and attenuate fast-oscillatory elementary WDs, one can balance auto-term resolution and cross-term suppression...
متن کاملSecond- and third-order wigner distributions in hierarchical recognition of speech phonemes
HIERARCHICAL RECOGNITION OF SPEECH PHONEMES Maria Rangoussi and Flemming Pedersen Digital Signal Processing Group, Institute for Electronic Systems, Aalborg University, DK-9220, Aalborg, DENMARK e-mail: fmaria,[email protected] ABSTRACT In this paper we investigate the use of the time-frequency representation of speech signals, and more speci cally of the secondand third-order Wigner distributions...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the IEEE
سال: 1988
ISSN: 0018-9219,1558-2256
DOI: 10.1109/5.4410