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What is sampling rate of a sensor?
It is the rate at which data is read and displayed. Since the internal circuit is constantly processing the signal even during display hold, it is possible that the display and the switching output do not match.
What is meant by Nyquist rate?
The Nyquist rate or frequency is the minimum rate at which a finite bandwidth signal needs to be sampled to retain all of the information. When searching for periodicities in a time series, frequencies greater than the Nyquist rate get attenuated and appear at lower frequencies than they are really present in.
How do you select a sampling frequency?
The sampling frequency should be at least double the maximum frequency. If your measurement is done in the pass-band (2.38 GHz-2.46 GHz), so the maximum frequency is 2.46 GHz which means that the sampling frequency should be at least 2×2. 46 GHz = 4.92 GHz.
How is discrete time sampling similar to continuous time sampling?
The basic concept of discrete-time sam- pling is similar to that of continuous-time sampling. Specifically, we multiply a discrete-time sequence by a periodic impulse train, thus retaining every Nth sample and setting the remaining ones to zero (where N denotes the period of the sampling impulse train).
How is a discrete time control system defined?
Discrete Time Control System: Discrete time control system is con- trol system in which one or more variable can change only at dis- crete instants of time. These instants which are denoted by KT or t k 0, 1, 2 ….
How are sampling rates used in digital communication?
Digital Communication – Sampling 1 Sampling Rate. To discretize the signals, the gap between the samples should be fixed. 2 Nyquist Rate. Suppose that a signal is band-limited with no frequency components higher than W Hertz. 3 Sampling Theorem. 4 Aliasing.
Is the sampling rate twice the system bandwidth?
Here we state only the essence, in plain English: the sampling rate must be at least twice the system bandwidth. This sampling theorem only gives us a lower bound. Practically we would want a higher sampling rate, say, 10 times the system bandwidth.