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Vaisala RVP900 - Page 251

Vaisala RVP900
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This word is a combination of MMTS_xxx bits, defined in dsp.h, specifying what types of
mismatches are okay (do not cause an all-zero ray to be produced) during PROC command
processing of timeseries data that are played back from an external source into RVP900.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---------------------------------------------------------------
| | | | | | | | | | | | | | | | |
| Flag bits related to timeseries (playback) | XARG 6
|---------------------------------------------------------------|
Combination of OPTS_xxx bits, , defined in dsp.h, which modify details of time series
behavior.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---------------------------------------------------------------
| | | | | | | | | | | | | | | |
| 1 | Offset in deciBels | Slope as 100 * dB/dB | XARG 7&8
|-- |-----------------------------|-------------------|---------|
These words allow you to set the breakpoints and slopes that modify the LOG threshold
according to the Clutter-to-Noise ratio of the target. This makes the LOG threshold behave
properly even as the noise
floor becomes elevated due to very strong clutter targets. A value
of 0 restores the RVP900 defaults from the Mf menu.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---------------------------------------------------------------
| | | | | | | | | | | | | | | | |
| Melting Height in Meters Above/Below Mean Sea Level | XARG 9
|---------------------------------------------------------------|
During time series playback, the height recorded with the time series is used instead of this
value.
The MSB is complemented in this signed number. This means that a value of 0 is the most
negative value and that the burst power was unknown. This is used to compute the long
term burst power calibration adjustment.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---------------------------------------------------------------
| | | | | | | | | | | | | | | | |
| Burst power at time of calibration in 1/100 of dBm | XARG 10
|---------------------------------------------------------------|
The default (power-up) values for the above parameters are listed below. Both the scientific
units and the integer-input required by the command to set up that value are given. Most of
these defaults are suitable for most radars.
Chapter 8 – Host Computer Commands
249

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