Nyquist theorem

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Ny·quist the·o·rem

(nī'kvist thē'ŏ-rĕm)
That a frequency must be sampled at least twice to reproduce it reliably.
References in periodicals archive ?
As you can see, sampling at 2 kHz accurately represents the frequency component according to the Nyquist Theorem, but sampling at 10 kHz better represents the shape of the original signal.
Traditional compressions of SAR data utilize the redundancy inherent in sampled data under the Nyquist theorem to achieve compressed representation and profitable transmission.
M/N equals 35/32, so that it is strictly coherent, but this condition does not conform to the Nyquist theorem.