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Posted by:MrOrange
Subject:gps - interpolation
Date:17:47:43 29/07/2009

I have a GPS device that update position 1 time per sec but inside the gpsxml file I can see <gps-point bssid="GP:SD:TR:AC:KL:OG"> at higher rate.

Time difference between this <gps-point> is between 1.04sec and 0.02sec. It should be, more or less, between 1.04 and 0.96 but I can often see values around 0.2.

I guess, this happen because I received packets those do not report "source-address" and I think Kismet put GPSTRAKLOG instead an empty mac address.

I'm trying to recognize the real GPSTRAKLOG but I need to know how Kismet associate latitude and longitude to signal received around GPS signal.

It will be really helpfully if you can complete this example replacing "?" with the logical combination of latitude and longitude.

- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- GPSTRACKLOG lat = 1 lon = 1
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- GPSTRACKLOG lat = 2 lon = 2
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- PACKET lat = ? lon = ?
- GPSTRACKLOG lat = 3 lon = 3
- PACKET lat = ? lon = ?


Thanks a million

Davide


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