What happens during velocity aliasing and range folding?
Suppose the maximum unambiguous velocity is 30 m/s. If the wind is blowing at 35 m/s, the radar will show the 35 m/s wind as a 5 m/s wind instead. All wind speeds above 30 m/s will be aliased in this case. Computer algorithms can correct this aliasing or increasing the PRF can correct this aliasing.