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en:help:1.4:tracker [2014/06/09 15:32] – alpinequest | en:help:1.4:tracker [2015/09/02 11:50] – alpinequest | ||
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- | ===== 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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* The " | * The " | ||
- | {{: | + | {{: |
==== Locations filtering ==== | ==== Locations filtering ==== | ||
- | {{ :en:help:1.4: | + | Location filters allow you to reduce the amount of recorded locations in order to reduce the battery usage and to increase the tracking accuracy (by reducing GPS inaccuracy errors). |
- | Location filters allow you to reduce the amount of recorded locations to reduce battery usage and to increase the tracking accuracy. | + | {{ :en:help:1.4: |
{{: | {{: | ||
When a new location is computed by the GPS based on the update frequency, the application will: | When a new location is computed by the GPS based on the update frequency, the application will: | ||
- | * Check that the location accuracy is better or equals to the "'' | + | * Check that the location accuracy is better or equals to the "'' |
- | * Check that the distance from the previous location is greater or equals to the "'' | + | * Check that the distance from the previous location is greater or equals to the "'' |
For instance, when using an update frequency of 5 seconds, a distance filter of 3 meters and an accuracy filter of +/-256 meters, all recorded locations: | For instance, when using an update frequency of 5 seconds, a distance filter of 3 meters and an accuracy filter of +/-256 meters, all recorded locations: | ||
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==== Barometric elevations ==== | ==== Barometric elevations ==== | ||
- | If your device has a built-in pressure sensor, you can activate the " | + | If your device has a built-in pressure sensor, you can activate the " |
{{: | {{: | ||
+ | |||
+ | |||
+ | ===== Common issues with the Location Tracker ===== | ||
+ | |||
+ | A common issue when recording a track is to lost the GPS location fix, leading to a missing part in the track (seen as a straight line longer that usual in the track). Usually, it happens because the device doesn' | ||
+ | |||
+ | Also, tracking a path requires frequent GPS location updates and some devices (mainly old or low-cost ones, but not always) doesn' | ||
+ | |||
+ | * The device becomes more hot than usual; | ||
+ | * The GPS doesn' | ||
+ | * 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: | * [[en: | ||
* [[en: | * [[en: | ||
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