Hi “Orders of magnitude” more accurate …
Right now, you can get around ~1 M in most areas. One order of magnitude would be <10 cm. More than one order of magnitude would be <10 mm. To me “orders” implies more than two, so that would be <1 mm. I guess everybody can toss out all their multi band GPS gear, there’s no need for it anymore. No need to put up all those expensive block III GPS sat’s either :) hmmmmm……I do believe the marketing boys have been playing with the numbers. You would have to start from a >50 M error to get them to make much sense based on what they are doing. =========== If you dig a bit more, Apple bought Coherent Navigation almost a half year ago. The main purpose appears to be merging their mapping software into Apple’s ill-fated maps program. Given that Iridium is a “pay’ service (as in $$$$$) you probably will not see it in run of the mill cell phones very soon …. Bob > On May 17, 2015, at 7:07 PM, Chris Albertson <albertson.ch...@gmail.com> > wrote: > > Anyone know anything about "iGPS"? Apparently the Iridium low orbit > communications sats are now modified via software update to send > signals that when combined with GPS allow for a receiver that is MUCH > more precise and harder to jam and can work in urban areas better. > Apple just bought a company that is building iGPS receivers. Looks > like something that they might want to put inside a cell phone but > when you have an orders of magnitude important in position you'd > expect better timing too, or so I would think. > > Seems like a very smart idea if all that was required was a software > upload to existing spacecraft. From what I read this is real, not a > proposal another are real receivers being tested. > > > -- > > Chris Albertson > Redondo Beach, California > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.