[PDF] MT-002: What the Nyquist Criterion Means to Your Sampled Data

What is Nyquist sampling rate?

Nyquist sampling rate is the rate which samples of the signal must be recorded in order to accurately reconstruct the sampled signal A signal sampled every T0 seconds can be represented as: One way of understanding the importance of the Nyquist sampling rate is observing the fourier spectra of a sampled signal

Should a Nyquist rate be used for confocal microscope images?

While sampling at the Nyquist rate is a very good idea, it is in many practical situations hard to attain. In these cases larger sampling distances may be used and a good job can still be done when deconvolving these images. For Confocal Microscope images, sampling distances may be up to 1.7 times the Nyquist ones.

Can a signal of bandwidth B be reconstructed from Nyquist samples?

But a signal of bandwidth B can be reconstructed from its Nyquist samples, which are at a rate of 2B Hz. Tn other words, a signal of bandwidth B Hz can be completely specified by 2 B independent pieces of information per second.

What is the Nyquist theorem?

Nyquist Theorem The Nyquist theorem states that in order to fully describe objects they must be sampled at twice the smallest resolvable object in the data. For iterative restoration the Nyquist sampling rate is the minimum that is necessary; higher sampling rates will lead to superior deconvolution results.