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Observability of Spectral Components beyond Nyquist Limit in Nonuniformly Sampled Signals
2012
ISRN Signal Processing
Identification of a signal component with the frequency exceeding the Nyquist limit is a challenging problem in signal theory as well as in some specific applications areas like astronomy and biosciences. A consequence of the well-known sampling theorem for a uniformly sampled signal is that the spectral component above the Nyquist limit is aliased into lower frequency range, making a distinction between true and aliased components impossible. The nonuniform sampling, however, offers a
doi:10.5402/2012/643563
fatcat:3ws4uano6fd3xfygedunudaj5q