OpenStreetMap 開放街圖
These weeks I've noticed Weird Things going on with my GPS:
osm.org/user/mbethke/traces/1029314
If you compare this with the satellite image and previous traces, you'll see the track is shifted several dozen meters northish.
Has anyone seen a GPS unit break in this way before? I don't have another GPS here to compare. This is a qstarz BTQ-1000X that has always been pretty amazing in sensitivity and exactness ...
討論
由 26eb5473101d742b174d730717409668 於 2011年06月10日 07時36分 發表的評論
I have seen that with GPS units that were moving while getting the initial fix. After stopping and moving around slowly the track was shifted a couple of meters for the next 20 minutes or so.
由 b166er 於 2011年06月10日 09時52分 發表的評論
how and why solar-flare disturbing gps-signal:
http://www.msnbc.msn.com/id/41651732/ns/technology_and_science-space/t/mega-solar-flare-disrupts-communications-gps/
http://www.globalpost.com/dispatch/solar-superstorm/110222/solar-flare-storms-katrina
and current news http://www.space.com/11893-huge-sun-eruption-spectacular-solar-flare.html