[kismac] Re: Signal strength

  • From: Geoffrey Kruse <gkruse@xxxxxxxxxxxxxx>
  • To: kismac@xxxxxxxxxxxxx
  • Date: Wed, 1 Mar 2006 16:47:16 -0700

A little bit of research reveals this:

4.10 ssi_type
The ssi_type field is used to indicate what type of signal strength
information is present: "None", "Normalized RSSI" or "dBm".  "None"
indicates that the underlying WLAN device does not supply any signal
strength at all and the ssi_* values are unset.  "Normalized RSSI"
values are integers in the range [0-1000] where higher numbers
indicate stronger signal.  "dBm" values indicate an actual signal
strength measurement quantity and are usually in the range [-108 - 10].
The following values indicate the three types:

        Value   Description
        0       None
        1       Normalized RSSI
        2       dBm
        3       Raw RSSI

Supposedly, all packets are supposed to contain this header information, so it should be a matter of parsing it and converting it to a standard format.


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