For a simliar effect see: http://wiki.openstreetmap.org/index.php/GPS_Dead_Zone
On Mon, Aug 04, 2008 at 12:15:24PM +0530, Kenneth Gonsalves wrote: > I have two gps instruments made locally (identical) and also a garmin > 72. The new instruments are very accurate and reliable nearly > everywhere. They are not much affected by clouds, trees and even > track from within trains with double glazed windows. But there is one > problem. In Coimbatore between latitudes 11.0 and 11.1, these > instruments go haywire. On josm I see a string of tracks in the north- > south direction, one straight line about 50 kilometers long. As soon > as the boundary is crossed, there is no problem. I have not yet > measured how far east and west this extends. The fact that it is > precisely 0.1 degree where the interference is suggests something man > made. This does not affect my garmin 72. One suggestion is that the > instrument is picking up some other signals from other satellites. > Has anyone experienced anything like this? > > coordinates for the trip: > > 1. moving south, track goes haywire at 11.1 N 76.9372 E and reappears > at 11.0 N and 76.9628 E. Again moving north it breaks at 11.0 N and > 76.7732 E. -- Jochen Topf [EMAIL PROTECTED] http://www.remote.org/jochen/ +49-721-388298 _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
