Title :
Refining the digital spectrum
Author :
David, Pedro A MS ; Szczupak, Jacques
Author_Institution :
Galiled Tecnologia, Rio de Janerio, Brazil
Abstract :
It is well known that the digital spectrum is distorted, if the sampling window does not enclose an integer number of the discrete periods of the signal components, i.e., if the discrete signal is truncated. This phenomenon is known as “spectrum leaking”. This paper presents an algorithm, based on the analysis of the spectral leakage, to obtain the true amplitude, phase and frequency of the signal components, based on their distorted values. The paper also includes some demonstrative examples of the algorithm performance
Keywords :
digital signals; signal sampling; spectral analysis; digital spectrum; discrete periods; distorted values; sampling window; signal components; spectral analysis; spectrum leaking; Algorithm design and analysis; Convolution; Frequency; Phase distortion; Samarium; Sampling methods; Signal analysis; Smoothing methods; Spectral analysis; Vectors;
Conference_Titel :
Circuits and Systems, 1996., IEEE 39th Midwest symposium on
Conference_Location :
Ames, IA
Print_ISBN :
0-7803-3636-4
DOI :
10.1109/MWSCAS.1996.588020
