1D speckle filter

A ray is the basic azimuth unit of RVP10 (for example, 1°) over which the samples are averaged to obtain the output base data (T, Z, V, W).

For this filter, a speckle is defined as any single, valid bin (not thresholded), having thresholded bins on either side of it in range. Any such isolated bin in a ray is set to "threshold".

Figure 1. 1D Speckle Filtering Algorithm

1D Speckle Filters
Purpose	Relevant data types
Reflectivity data	dBT, dBZ, ZDR LDR when using dual-pol
Doppler data	V, W, PhiDP, RhoHV KDP when using dual-pol

When either speckle filter is switched on, it is applied in HydroClass.

Each filter must be switched on or off, depending on the nature of the targets being observed. For example, when making a clutter map of the area, it is recommended that you switch both speckle filters off.