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manual:user_guide:tools:altitude
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manual:user_guide:tools:altitude [2015/10/05 12:59] – mstupkamanual:user_guide:tools:altitude [2016/10/21 16:04] – [Pressure sensor] mstupka
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 ==== Altitude offset ==== ==== Altitude offset ====
  
-  * **Use altitude offset** - switches on the definition of offset between real and GPS altitude. More in the **Offset tab**.+  * **Use altitude offset** - switches on the definition of offset between real and GPS altitude. More in the **[[manual:user_guide:tools:altitude#offset|Offset tab]]**.
 ==== Pressure sensor ==== ==== Pressure sensor ====
  
-  * **Use pressure sensor** - switches on measuring precise altitude by the device built-in barometric pressure sensor. More in the **Pressure tab**.+  * **Use pressure sensor** - switches on measuring precise altitude by the device built-in barometric pressure sensor. More in the **[[manual:user_guide:tools:altitude#pressure_sensor1|Pressure tab]]**.
 ====  Elevation data ==== ====  Elevation data ====
   * **Optimize GPS altitude** - uses [[http://en.wikipedia.org/wiki/Shuttle_Radar_Topography_Mission|offline elevation data (HGT)]] to optimize GPS altitude values. Computed altitude has similar accuracy to an average GPS but does not contain serious errors GPS units usually make. HGT files are downloaded usually together with LoMaps or can be additionally downloaded by a "fill altitude" command [[manual:user_guide:tracks:management#track_detail_screen|editing tracks]].   * **Optimize GPS altitude** - uses [[http://en.wikipedia.org/wiki/Shuttle_Radar_Topography_Mission|offline elevation data (HGT)]] to optimize GPS altitude values. Computed altitude has similar accuracy to an average GPS but does not contain serious errors GPS units usually make. HGT files are downloaded usually together with LoMaps or can be additionally downloaded by a "fill altitude" command [[manual:user_guide:tracks:management#track_detail_screen|editing tracks]].
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 {{ :manual:user_guide:tools:altmanager2.png }} {{ :manual:user_guide:tools:altmanager2.png }}
-Altitude calculated by internal GPS unit is related to a different method of referencing the Earth surface than that used in maps. The difference between them is called **Geoid height** which is distance between [[http://en.wikipedia.org/wiki/Geoid|Geoid]] and [[http://en.wikipedia.org/wiki/Reference_ellipsoid|reference elipsoid]].+Altitude calculated by internal or external (Bluetooth) GPS unit is related to a different method of referencing the Earth surface than that used in maps. The difference between them is called **Geoid height** which is distance between [[http://en.wikipedia.org/wiki/Geoid|Geoid]] and [[http://en.wikipedia.org/wiki/Reference_ellipsoid|reference elipsoid]].
  
 Locus Map can define this offset by three methods: Locus Map can define this offset by three methods:
manual/user_guide/tools/altitude.txt · Last modified: 2022/04/08 11:54 by mstupka
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