Altimeter

public protocol Altimeter : Instrument

Instrument that informs about altitude and vertical speed.

This instrument can be retrieved by:

drone.getInstrument(Instruments.altimeter)

  • Altitude of the drone relative to take off altitude (in meters). nil if not available. This can happen if the drone does not know or provide this information.

    Declaration

    Swift

    var takeoffRelativeAltitude: Double? { get }

  • Altitude of the drone relative to the ground (in meters). nil if not available. This can happen if the drone does not know or provide this information.

    This is the fusion of barometer and ultrasounds.

    Note

    May be wrong at high altitude and jump brutally when getting closer to the ground.

    Declaration

    Swift

    var groundRelativeAltitude: Double? { get }

  • Absolute altitude of the drone, i.e. relative to sea-level (in meters). nil if not available. This can happen if the drone does not know or provide this information, or if its gps is not fixed.

    Declaration

    Swift

    var absoluteAltitude: Double? { get }

  • Terrain data. nil if not available. This can happen if the drone does not know or provide this information.

    Declaration

    Swift

    var terrainData: TerrainData? { get }

  • Vertical speed of the drone (in meters/second). nil if not available. This can happen if the drone does not know or provide this information.

    Positive when the drone is going up, negative when the drone is going down.

    Declaration

    Swift

    var verticalSpeed: Double? { get }