My new generation GPS's such as a late model Garmin, and a leadtek blutooth GPS seem to get a lock indoors just fine, whilst all my older models cannot.
Dave L ---------------------------------------- > From: mar...@gregorie.org > To: xcsoar-user@lists.sourceforge.net > Date: Fri, 15 Apr 2011 20:20:59 +0100 > Subject: Re: [Xcsoar-user] Help > > On Fri, 2011-04-15 at 14:44 -0400, Bill Hanson wrote: > > > It seems > > that the GPS on the phone does not work in my office - it worked when I > > started it last night while driving - I will test it again tonight. > > > That isn't surprising. In general a GPS won't work indoors because the > satellite signal is very weak and doesn't generally penetrate into > buildings. None of my GPS units (a couple of Garmin GPS II+ handhelds, a > Garmin GPS 35 'blind receiver', a Tomtom satnav and a Binatone B.350 > satnav) will work indoors and I don't expect my newly acquired RedBox > FLARM to do so either. > > However, a phone can find out where it is, though at lower accuracy, as > long as it has a signal and is running an application that can get the > information from the network. That only works because the network knows > which cell your phone is in and where its cell towers are. This is such > low accuracy information that it would be useless to XCSoar and hence > would be ignored even if the phone makes it available. > > > I am not sure if it has to have movement to work??? > > > A GPS system knows where it is if it can see three or more satellites > and its height if it can see 5 or more. It can do this whether its > stationary or moving. However, it has to be moving to know where North > is. > > > Martin > > > > ------------------------------------------------------------------------------ > Benefiting from Server Virtualization: Beyond Initial Workload > Consolidation -- Increasing the use of server virtualization is a top > priority.Virtualization can reduce costs, simplify management, and improve > application availability and disaster protection. Learn more about boosting > the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev > _______________________________________________ > Xcsoar-user mailing list > Xcsoar-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xcsoar-user ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________ Xcsoar-user mailing list Xcsoar-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xcsoar-user
