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Super-Resolving a Frequency Band
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AI
DOI：10.1109/MSP.2023.3311592.png)
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摘要
En 中文
This article introduces a simple formula that provides the exact frequency of a pure sinusoid from just two samples of its discrete-time Fourier transform (DTFT). Even when the signal is not a pure sinusoid, this formula still works in a very good approximation (optimally after a single refinement), paving the way for the high-resolution frequency tracking of quickly varying signals or simply improving the frequency resolution of the peaks of a discrete Fourier transform (DFT).
Keyword:
Discrete Fourier transforms
Education
Robustness
Frequency estimation
Signal resolution
期刊
IF:
9.6
论文数:
1.1W
被引数:
1.7W
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