Velocity Folding
If a particle's radial velocity is outside the range of the nyquist interval, then the radial velocity will be aliased, or folded. This is called velocity folding/aliasing.
Example: if nyquist velocity is 25 m/s and the particle's radial velocity is -30 m/s, then it will fold over and the radar will interpret it as +20 m/s -->>
Folded Velocity Examples:
