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en:help:1.4:tracker [2015/02/09 18:03]
127.0.0.1 external edit
en:help:1.4:tracker [2017/09/12 11:21] (current)
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 <​sub>​[[en:​help|Online Help]] > [[en:​help:​1.4|AlpineQuest 1.4]]</​sub>​ <​sub>​[[en:​help|Online Help]] > [[en:​help:​1.4|AlpineQuest 1.4]]</​sub>​
-===== The Location Tracker =====+====== The Location Tracker ​======
  
 The AlpineQuest GPS Location Tracker is a background service that records all your locations and creates a track of your hikes. The AlpineQuest GPS Location Tracker is a background service that records all your locations and creates a track of your hikes.
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 {{:​icon_help.png?​nolink}} The barometric data is auto-calibrated by AlpineQuest using GPS locations. {{:​icon_help.png?​nolink}} The barometric data is auto-calibrated by AlpineQuest using GPS locations.
 +
 +
 +===== Common issues with the Location Tracker =====
 +
 +A common issue when recording a track is to lost the GPS location, leading to a missing part in the track (seen as a straight line longer than usual). Usually, it happens because the device doesn'​t have a good enough access to the sky, for example when the device is placed in a pocket or in a bag. The GPS signal emitted by GPS satellites is weak and gets easily lost when going through any material. If you have the "​**''​lost of signal warn''​**"​ {{:​icon_06.png?​nolink}} setting activated, the application will play a song when it looses the GPS signal.
 +
 +Also, tracking a path requires frequent GPS location updates and some devices (mainly old or low-cost ones, but not always) doesn'​t support the GPS being turned on for long hours. Common symptoms in this case can be:
 +
 +  * The device becomes more hot than usual;
 +  * The GPS doesn'​t report anymore satellites for some time, the location fix is lost, leading to a missing track part;
 +  * The Location Tracker is simply closed by the system, the tracking is stopped.
 +
 +If you encounter one of these symptoms, you can try to:
 +
 +  * Reduce the tracking frequency, a location per 10 seconds is a recommended setting for hours long tracks;
 +  * Use an economy tracking frequency (starting at 1 location / 20 seconds), in which the GPS is completely turned off between update. Be sure to leave your device in view of the sky so the GPS can quickly retrieve a location for each update;
 +  * Turn off the recording of barometric elevations to leave the pressure sensor turned off (this one can also be the source of issues when continuously used for long time).
  
  
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   * [[en:​help:​1.4:​landmarks:​format-gpx#​how_to_export_tracks_in_gpx_format|How to export tracks in GPX format ?]]   * [[en:​help:​1.4:​landmarks:​format-gpx#​how_to_export_tracks_in_gpx_format|How to export tracks in GPX format ?]]
   * [[en:​help:​1.4:​landmarks:​format-kml|How to export tracks in KML format ?]]   * [[en:​help:​1.4:​landmarks:​format-kml|How to export tracks in KML format ?]]
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