Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

2 Bulletin of the Polish Academy of Sciences. Technical Sciences

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Complex Signals with Single-orthant Spectra as Boundary Distributions of Multidimensional Analytic Functions

100%

Hahn S. L.

2003

tom Vol. 51, nr 2

155-161

Starting with the Cauchy integral representation of a multidimensional analytic function it was shown that complex signals with single-orthant sprectra are boundary distributions of multidimensional analytic functions.

Quasi-analytic multidimensional signals

63%

Hahn S. L. , Snopek K. M.

tom Vol. 61, nr 4

1017--1024

In a recent paper, the authors have presented the unified theory of n-dimensional (n-D) complex and hypercomplex analytic signals with single-orthant spectra. This paper describes a specific form of these signals called quasi-analytic. A quasi-analytic signal is a product of a n-D low-pass (base-band) real (in general non-separable) signal and a n-D complex or hypercomplex carrier. By a suitable choice of the carrier frequency, the spectrum of a low-pass signal is shifted into a single orthant of the Fourier frequency space with a negligible leakage into other orthants. A measure of this leakage is defined. Properties of quasi-analytic signals are studied. Problems of polar representation of quasi-analytic signals and of its lower rank representation are discussed.