1. The Nyquist frequency of a 1.544 megabaud signal is 772 kHz.

2. An anti-Aliasing filter reduces these harmful effects by eliminating the portions of the signal that are above the Nyquist frequency.

3. The method of digital interpolation beam-forming, demanding the sample frequency be equal to or a bit higher than Nyquist frequency.

4. Vibrational MTF is compared with that under static condition, and the results are consistent with simulation curve with a 30% decrease at the Nyquist frequency.

5. Anti-Aliasing low-pass filter designs must provide fast roll off with sufficient stop band attenuation to lower signal amplitudes sharply above the Nyquist frequency

6. Aliasing of Noise Problem: Noise at higher frequencies is aliased into our frequency range of interest Solution: Filter signal before sampling “Anti-Aliasing filter” Cutoff frequency should be no higher than the Nyquist frequency

7. Aliasing can be avoided by sampling at least twice the highest frequency of the waveform or by filtering frequencies above the Nyquist frequency, the highest frequency that can be defined accurately by that sampling interval