On Sun, Mar 01, 2009 at 12:57:30PM -0800, mqy wrote: > > U-blox receiver allows polling AID-EPH, AID-ALM data. > For each type, we can poll 32 messages for 32 satellites. > The precondition is: current fix is valid -- at least 3 SVs has valid EPH(or > ALM?) data. > > These data get invalid 2~4 hours later, > can be stored into files, and load into GPS receiver when needed and they > are valid.
they can probably still be used to get a rough estimate _______________________________________________ Openmoko community mailing list firstname.lastname@example.org http://lists.openmoko.org/mailman/listinfo/community