Speckle filter

A speckle filter is a final pass over each output ray, in which isolated, single bins of velocity, width, or intensity are removed.

There are two speckle removers in RVP10:

• 1D single-ray speckle filter (default)—This is used for any output parameter.
• 2D 3x3 speckle filter—If enabled, this is used for any output parameter.

This eliminates single pixel speckles, which allows the thresholds to be reduced for greater sensitivity with fewer false alarms (speckles).