USER’S MANUAL__________________________________________________________________
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Gaussian Model Adaptive Processing (GMAP) (Type 2)
This type of processing is the most advanced form of clutter filtering and
moment estimation (see Section 6.2.5 Clutter Filtering Approaches on
page 203). For GMAP processing, the only thing that needs be specified is
the spectrum width of clutter. Note that the algorithm is not too sensitive
to the exact value of this. Several widths should be configured to cover the
antenna rotation rates that are commonly used. It is useful to turn off clutter
filtering (select the all pass filter #0) and then look at actual measurements
of the clutter width while the antenna is rotating, for example, using the
ascope utility or application software such as the Vaisala IRIS system.
Whitening Parameters for Tx:Random
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Secondary SQI Threshold Slope:0.50 Offset:-0.05
The two values in this question define a secondary SQI threshold that is
traditionally used to qualify LOG data only in the Random Phase
processing mode. But the secondary SQI threshold is applied uniformly in
all processing modes whenever reflectivity data are specified as being
thresholded by SQI. The secondary SQI level is computed by multiplying
the primary user-supplied SQI threshold by the SLOPE, and adding the
OFFSET. See also Section 6.8.3 Tuning for Optimal Performance on page
247.
Limits: SLOPE: 0.0 to 2.0, OFFSET -2.0 to 1.0
Whitening Parameters for Tx:SZ(8/64)
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Max power mismatch across octants: 4.0 dB
High power rejection threshold: 8.0 dB
Maximum KEY phase error: 12.0 deg
These parameters tune the phase whitening process for SZ(8/64)
transmissions.
4.2.4 Mt — General Trigger Setups
These questions are accessed by typing Mt with no additional arguments.
They configure general properties of the RVP900 trigger generator
Pulse Repetition Frequency: 500.00 Hz
This is the Pulse Repetition Frequency of the internal trigger generator.
Limits: 50 to 20000Hz.
Transmit pulse width: 0
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