This mapping scheme using recorded findu data would assume reasonable representation of IGATES listening. Some places only have one minimal IGATE station and it only hears part of the pass. Others may be lacking in the ability to capture the non APRS formatted packets that do get relayed via the orbiting transceiver.
This also does not allow reasonable mapping of interference and in fact could show an area as being rather quiet since many have a harder time getting through.
It would provide confirmation of congestion over areas with significant IGATE population but we already know what is going on there.
Kenneth - N5VHO
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Robert Bruninga Sent: Tuesday, January 29, 2008 5:02 PM To: 'Geoff'; amsat-b[email protected] Subject: [amsat-bb] Re: AMSAT Operating Areas (OA's)
Many many moons ago there was a piece of software that would take the logs from a PACSAT bbs and a set of orbital elements and generate a usage map.
Hummh. Actually that could be trivial to do. Since every packet ever transmitted via ISS and received by the www.ariss.net web page is available live on FINDU.COM. And all of the ones that transmitted APRS include their LAT/LONG.
So just a plot of every one of these packets with a radius of 1200 miles and a color density of say 1%. Then sum them on a map. By the time there were 100 in a given area, that area would be solid color...
Then just look at the map color density of the world would reveal the usage density... Wow, what a fun project. Wish I had time...
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