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[aprssig] "location changes too fast > 500 km/h"

Heikki Hannikainen hessu at hes.iki.fi
Mon Oct 12 17:24:36 UTC 2009


On Sat, 29 Aug 2009, Keith VE7GDH wrote:

> Kriss KA1GJU wrote...
>
>> The KA1GJU-6 tracker will not show up properly on APRS.fi since my speeds 
>> are in excess of 500 kM/hr (270 kts) above 10,000 feet.
>
> Perhaps Hessu could tweak the settings on aprs.fi to remove the
> 500 kM/h limitation for stations using a plane/small plane symbol.

I've tweaked the algorithm now, and upped the hard limit considerably. 
aprs.fi should now work fine for civil aviation purposes, but there might 
still be issues with those of you with a scramjet or an SR-71/A-12. The 
solution isn't symbol specific.

http://oh7lzb.blogspot.com/2009/10/new-bad-gps-fix-detector-algorithm.html

http://aprs.fi/?call=KA1GJU-6

   - Hessu




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