sampling

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Synonyms for sampling

items selected at random from a population and used to test hypotheses about the population

measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form)

References in periodicals archive ?
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. However, the FFT spectrum shown in Figure lb can provide characteristic information about the test signal such as the signal level and the harmonics.
According to the spatial analogue of the Nyquist Theorem, the minimum spacing between microphones must be at most half the wavelength corresponding to highest frequency present.
The Nyquist Theorem states that to accurately reconstruct a signal recorded as a digital sequence, it must have been sampled at more than twice the highest frequency component in the signal.
The [S.sub.r][S.sub.n] contours in the diagram clearly show that it is the encirclement of 1 + j0 that matters (as known from the Nyquist theorem) and not the value of [S.sub.n][S.sub.r] at the crossing of the real axis.