Control Description
Window
Selects the type of window that is applied to time series data prior to computing
power spectra with a DFT. Choices are:
• 0:Rectangular
• 1:Hamming
• 2:Blackman
• 3:Exact Blackman
• 4:VonHann
PCT
If set, RVP900 attempts to run its standard processing algorithms even when a
custom trigger pattern has been selected with the SETPWF command.
UVD
Unfold velocities using a simple (Vhigh Vlow ) algorithm, rather than the standard
algorithm described in 7.5.3.2.1 Dual-PRF Unfolding (page 213) .
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---------------------------------------------------------------
| | | | | | | | | | | | | | | | |
| Threshold Control Flags for UnCorrected Reflectivity | Input 11
|---------------------------------------------------------------|
These flags select which legacy threshold comparisons result in uncorrected reflectivity
being accepted or rejected at each bin. There are 4 test comparisons made at each range, as
described above for input words 4, 5, 6, and 7. Further quality tests such as the Polarimetric
Meteo Index can be configured for each data type. See 8.30 Set Individual Thresholds
(THRESH) (page 315).
Each test either passes and produces a code of 1, 2, 4, and 8 respectively, or fails and
produces a code of 0. The sum of the codes for each of the 4 tests is a number between 0
and 15, which can also be interpreted as the following four-bit binary number:
3 2 1 0
-----------------
| 8 | 4 | 2 | 1 |
|---|---|---|---|
\ \ \ \_______ LOG Threshold Passes
\ \ \__________ CCOR Threshold Passes
\ \_____________ SQI Threshold Passes
\________________ SIG Threshold Passes
The individual bits of the Threshold Control Flag word specify whether data are to
be accepted (1) or rejected (0) in each of the possible combination of threshold outcomes.
The pattern of bits in the flag word represents a truth table for a given logical function of the
four threshold outcomes.
The following examples show values of the Flag word for the stated combinations of
acceptance criteria:
RVP900 User Guide M211322EN-J
244
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