Vaisala RVP900 - Configure Ray Header Words (CFGHDR)

The command is followed by additional XARGs that give the specific filter parameters.
Beginning with the Filter Type, the complete XARG list is a struct
rvp900SpecFiltIO ( See include/rvp900.h ) for each of the following filter types.
Type:0 SPFILT_FIXED Fixed Width Spectral Filter
Legacy clutter
filter inherited from RVP6/7, specified by a width parameter telling how many
points to remove (center zero velocity point, plus one side), plus an Edge Points
parameter telling how many points to minimize on each side of the gap to compute the end
points of a linear interpolation to fill the gap.
Type:1 SPFILT_VARIABLE Variable Width Spectral Filter
Similar to the fixed width filter except that the width parameter is interpreted as a minimum
width, and a third parameter indicates the maximum width. The clutter gap width is
dynamically determined at each bin based on the slopes of the spectral terms. Linear
interpolation of the gap (based on Edge Points) is the same as above.
Type:2 SPFILT_VARLSQ Variable Width / Quadratic interpolation
Similar to the variable width
filter except that quadratic gap interpolation is used. This filter
is experimental and should not be used.
Type:3 SPFILT_GMAP Gaussian Model Adaptive Processing Spectral
Filter
This is the RVP900 most advanced clutter
filter, combining the best techniques for
determining the clutter gap width and restoring whatever low-velocity spectral points are
removed.
This filter is characterized by a single parameter, which is the assumed clutter width
expressed as a physical velocity.
8.23
Configure Ray Header Words
(CFGHDR)
The processed data that are output by the
PROC command may contain optional header
words that give additional information about each ray. This command configures the set of
words that makeup each header.
There are (up to) 32 dierent choices of words or groups of words to include, as indicated
by the bit mask following the command. Setting a bit requests that those words be included
in the header, and be placed in the order implied by the sequence of the bits. Leaving all bits
clear suppresses the header; though this can also be done without changing the
configuration in the NHD (No-Headers) bit in SOPRM Input #2.
RVP900 User Guide M211322EN-J
308