@inproceedings{8109675e77774643b76025f343097144,
title = "Detection and resolution of narrow band signal components by concentrating the DFT",
abstract = "We present a method for concentrating the Discrete Fourier Transform (DFT) and generating a spectral representation which may be used to more accurately detect, locate, and resolve narrow band signal components than the power spectrum. The method relies on the observation that, under mild hypothesis, the instantaneous frequency of a complex-valued signal is proportional to the phase of its cross-power spectrum. We demonstrate by examples that in high noise environments, the method significantly outperforms the Welch method for detecting, locating and resolving narrow band components. 2006 American Institute of Physics.",
keywords = "Cross-power spectrum, Detection and estimation, Discrete fourier transform, Discrete-time fourier transform, Frequency resolution, Instantaneous frequency, Spectral analysis, Welch method",
author = "Smith, {David C.} and Nelson, {Douglas J.}",
year = "2006",
doi = "10.1063/1.2361221",
language = "English",
isbn = "0735403562",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
pages = "200--209",
booktitle = "INFORMATION OPTICS",
note = "null ; Conference date: 05-06-2006 Through 07-06-2006",
}