How accurate does this position information have to be? With my own telephone numer, i could at least find out in which country i am. Not so good for america, russia and brazil. But in smaller countries, you culd get a ±500km position.
Al Johnson wrote: > Gets my location wrong by 100 miles or so. Other GeoIP services put me in > other locations similar distances away. The BBC has had complaints from > people reported as being in a different country because it blocks them from > using the download service. Perhaps this only affects a minority, so it's > another option to add to the list. If we have multiple sources we can see if > they agree. > > On Monday 07 July 2008, Francesco Cat wrote: >> Another thing that might help: If the FR is connected to any network >> one should also be able to use IP Locator services like >> http://whatismyipaddress.com/ to get another extimation of the >> location of FR. They are usually quite accurate. >> >> Would this help? >> >> 2008/7/7 Yogiz <[EMAIL PROTECTED]>: >>> On Mon, 7 Jul 2008 15:37:08 +0100 >>> Al Johnson <[EMAIL PROTECTED]> wrote: >>> >>> Thank you for the testing. Keep doing the good work. >>> Hopefully this idea can solve the long fix problem. >>> >>>> First stab uses the example perl functions from ublox for generating >>>> the aid-ini data, replacing their hardcoded x,y,z with values for my >>>> location. The copyright notice on the example code says you can't do >>>> anything with it without permission so I can't give you the script, >>>> but I can tell you how to reproduce it ;-) >>>> >>>> Get the AssistNow online client application note from: >>>> http://people.openmoko.org/matt_hsu/ImplementationAssistNowServerAndClie >>>> nt(GPS.G4-SW-05017-C).pdf >>>> >>>> Create a new script aid-ini.pl and start with: >>>> >>>> #!/usr/bin/perl >>>> print(clientdata_prepare()); >>>> >>>> Go to section B - Sample Server implementation and append subroutines >>>> clientdata_prepare and ubx_checksum to aid-ini.pl >>>> >>>> You need to replace the $posx, $posy and $posz values in >>>> clientdata_prepare with some that match your location. These are ECEF >>>> coordinated in m. There's an explanation of the calculation method in: >>>> http://www.u-blox.com/customersupport/docs/GPS.G1-X-00006.pdf >>>> >>>> Alternatively you can use the attached spreadsheet if it survives the >>>> list. Just replace the lat and lon with values for your location. >>>> >>>> You probably want to change the time accuracy to reflect the accuracy >>>> of the Freerunner clock, and possibly the accuracy of your location >>>> estimate. >>>> >>>> Now copy the script to somewhere suitable on the Freerunner and make >>>> it executable. I'm using /usr/local/bin. You need to install perl if >>>> you don't have it already: >>>> opkg install perl >>>> >>>> Switch on the GPS then run the script: >>>> /usr/local/bin/aid-ini.pl > /dev/ttySAC1 >>>> >>>> If you cat /dev/ttySAC1 you should be able to see it using the >>>> current time according to your Freerunner. TangoGPS makes it easier >>>> to see what it's doing. In the only test I've managed so far it got a >>>> fix with a poor view of the sky, while my Garmin Geko was still >>>> struggling to see 3 sats. It wasn't quick, but it was better than the >>>> Garmin. It would be interesting if you could try 2 units side by >>>> side, one with aid-ini and one without, to see if it really makes a >>>> difference or if I was just lucky. I'll try to get some more testing >>>> in, but the weather isn't good here, and I don't want to get my new >>>> toy wet ;-) >>> _______________________________________________ >>> Openmoko community mailing list >>> [email protected] >>> http://lists.openmoko.org/mailman/listinfo/community >> _______________________________________________ >> Openmoko community mailing list >> [email protected] >> http://lists.openmoko.org/mailman/listinfo/community > > > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community -- Drucken Sie diese Mail bitte nur auf Recyclingpapier aus. Please print this mail only on recycled paper. _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
