What i did with my phone (using the script stuff Al posted), i took my position from google maps, simply by finding my home, centering it, and making a link.
In the link you can see the coordinates and use the spreadsheet attached to his mail to calculate the right x,y,z. This works very well, i've been able to get a fix easy now. Tilman Baumann skrev: > 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 >> > > > _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
