Configure interference filter (CFGINTF)

RVP10 can optionally apply an interference filter to its incoming (I,Q) data stream, with the goal of rejecting occasional and sparse interference from other (usually man-made) signal sources.

The CFGINTF command is used to choose which filtering algorithm is applied, and to configure its operation with additional XARGS parameters. See Pass auxiliary arguments to opcodes (XARGS).

If the XARGS are not supplied, the filter parameters retain their previous values. CFGINTF with no XARGS can be used to turn the interference filters On/Off without making any other changes to their threshold constants. Likewise, if only XARGS is supplied, then that single threshold value is used for both C1 and C2.

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|   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |
| Filter        | 0   0   0   0    0   1   1   1   1   1   1   1 |  Command 
|---------------|------------------------------------------------|  

Filter chooses which interference algorithm should be run. See Interference filter.

  • 0: None (Interference filtering is disabled)
  • 1: Alg.1 (Traditional JMA Algorithm)
  • 2: Alg.2 (Alg.1 optimized for additive interference)
  • 3: Alg.3 (Alg.2 with better statistics)

Vaisala recommends Alg.3 for general operational use. The other algorithms are included mostly for historical reasons.

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|   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |
|      Threshold Parameter C1 in Hundredths of decibels          |  XARG 1 
|----------------------------------------------------------------|  
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|   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |
|      Threshold Parameter C2 in Hundredths of decibels          |  XARG 2 
|----------------------------------------------------------------|