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Messages - jaco

#1
MAPAS/MAPS / Re: systematic position error
January 17, 2015, 07:11:07 PM
Hi



Thanks for the help

I made the test that you recommended  and with online maps, and  the position was correct.

I reimported a piece of IGN maps , same procedure as the first time ... and now the position is correct !!

the problem is for sure related to the maps generation , but I don't understand why  (error on 2 differents types of maps IGN and OSM ),

now   it is correct ...  !!!  that's good enough !!



thanks  for your quick answer
#2
MAPAS/MAPS / systematic position error
January 14, 2015, 11:34:34 PM
Hi

I have a systematic location error, about 30 meters to East direction

I defined a GPX route (using  OPENRUNNER web site) on PC with a IGN 25K topo as background, zoomed at maximum to point very precisely my route (in mountain region). I exported the Gpx file to my smartphone (a QUECHUA) .  When I display the route on my smartphone, it is systematically shifted to East  

. I verified the LAT, LONG values in the imported GPX file : they are exact

I use IGN 25K topo maps , imported with MOBAC

Then I made the other test :

I recorded a short trip around my place in open urban environment . I displayed my track on IGN map and OPenstreetmap (ONLINE mode) : same problem , same error value and direction.

I don't think that the problem is related to the GPS chip : it would be random

In urban area, I am totally sure that GPS reception was excellent (I checked the number of satellites)

Same problem with 2 different maps on the same region : it's not the maps.

Same problem with a GPX file and with a track recorded with  the QUECHUA GPS ..

It looks like the ORUX application was misinterprating the LAT, LONG values !!!!  LoL  

Do you have an idea ???



thanks for your help
#3
GENERAL / setting the vario with known altitude
November 20, 2014, 12:27:23 AM
Cannot find the menu to enter altitude value to calibrate the vario .

Are some settings required before enterin the altitude value (GPS ON, vario ON ???)

Thanks for your help.