Vaisala RVP900, Руководство пользователя

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Command Example
Read Setup Information
( SETU )
Example:
SETU
means read the
dsp_manual_setup
structure from RVP900
and send it back in an ASCII
name=value
pair format.
This is the structure configured in the RVP section of the Setup utility.
The configuration is served to all clients using RVP900.
Write Zcal Information
( WCAL )
Example: WCAL|... writes the dsp_refl_cal structure to RVP900 for saving.
3.2.5 Public API
To support writing your own signal processing algorithms for RVP900, the RVP900
software architecture allows you to statically link plug-in modules to the running code. The
following table shows how the API supports adding software extensions to the RVP900
framework to modify some signal processing stages.
Table 7 API Support for Modifying Signal Processing
Processing Stage API Support
Tx/Rx waveform synthesis and matched filter
generation Define transmit waveforms from pulse-to-pulse, along
with the corresponding FIR coefficients that extract
(
I
,
Q
) from the Tx waveform.
Allows users to experiment with arbitrary waveforms
for pulse compression and frequency agility.
Time series and spectra processing from ( I , Q ) Modify default time series and spectra data, for
example, to perform averaging or windowing in a
different way.
Parameter generation from ( I , Q ) • Redefine how standard parameters ( dBZ ,
Velocity , Width , PHIDP , and so on.) are
computed from the incoming ( I , Q ) time series.
• Create new parameter types.
The standard scientific algorithms are not public. Many RVP900 library routines are also
documented and can be called by user code, but the source to these routines is not
generally released. Development tools must be purchased separately.
More Information
‣
Customizing RVP Software (page 371)
3.3 RVP900 Weather Signal Processing
Radar signal processor (RVP) software triggers radar measurement by producing the trigger
signal for the transmitter using the intermediate frequency digital receiver (IFDR) unit in the
receiver.
RVP900 User Guide M211322EN-J
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