Altimeter

Altimeter is an Android app that allows users to determine their true altitude above sea level using their device’s GPS signal. It does not require a network connection to work and is accurate even when used offline or in flight mode. The app uses the EGM96 Earth Gravitational Model to calculate the true altitude above mean sea level, and also includes features such as the Ordnance Survey National Grid reference system and the ability to use a barometer for more accurate readings.

1. Altimeter is an Android app that allows users to get the true altitude above sea level (MSL) at their current location or any location on earth.
2. The app uses the GPS signal to get the raw altitude and does not require a network connection to work.
3. The true altitude above mean sea level is determined using the EGM96 Earth Gravitational Model.
4. The app has main features such as being offline, working without a network connection, and providing true altitude above sea level (AMSL) using EGM96.
5. The app also supports the Ordnance Survey National Grid reference system (OSGB36) and can be used with a barometer or pressure sensor.

Altimeter, Android, location, MSL, GPS, EGM96, Earth Gravitational Model, offline, true altitude, AMSL

Altimeter is an handy Android application allowing you to get the

true altitude above sea level

(MSL) at your current location or any location on earth. It requires access to your device location to get raw altitude from the GPS signal and

do not require a network connection

to work. True altitude above mean sea level is determined using EGM96 Earth Gravitational Model. Main features are :

•

Offline

true altitude above sea level

• No network required (

works offline and in flight mode

)

•

True altitude above sea level

(AMSL using EGM96)

• Ordnance Survey National Grid reference system (OSGB36)

• Use

Barometer

or

GPS Satellite

• Address at current location

• Save altitude at location

• Altitude accuracy estimation

• Horizontal accuracy estimation

• Altitude at any location

•

Pick location on a Map

• Open photo geotags to display associated altitude

• Search for a location by name or address

• Universal Transverse Mercator coordinates (UTM)

• Military Grid Reference System coordinates (MGRS)

• Home screen widget to display altitude at current position

Network access is required to get the altitude of a location picked from the map.

Height above mean sea level

(AMSL) is the elevation (on the ground) or altitude (in the air) of an object, relative to the average sea level datum. Normal GPS elevation considers the entire Earth as an ellispoid and differences up to 100 metres (328 feet) can exist between this ellipsoid height and true mean tidal height. The alternative, which is what we use in this application, is a geoid-based vertical datum such as the global EGM96 model.

Altitude vertical accuracy is defined at 68% confidence. Specifically, as 1-side of the 2-sided range above and below the estimated altitude reported, within which there is a 68% probability of finding the true altitude.

Enjoy!