#ifndef ORGOMGC4IDOMAIN_MODELNAVIGATION_DOMAINDEFVAR
#define ORGOMGC4IDOMAIN_MODELNAVIGATION_DOMAINDEFVAR
#include "Coordinates_and_Positions.idl"

module org
{

  module omg
  {

    module c4i
    {

      module Domain_Model
      {

        // This package contains the Domain Models for the Navigation services. It is
        // organised according to functionality: i.e. the modelling of attitude (the
        // orientation and offset of the platform relative to its reported position), the
        // platform's position (including velocity and acceleration), the depth of water the
        // platform may be in and the reporting of this information. 
        module Navigation_Domain
        {

          // The set of methods describing the provenance of the accuracy values
          enum accuracy_derivation_type
          {
            // The values have been set using engineering judgement.
            ESTIMATED,
            // The accuracy values have been calibrated using real data to derive fixed accuracy
            // values for particular instruments.
            STATICALLY_CALIBRATED,
            // The accuracy values have been calibrated using real data to derive accuracy
            // values for particular instruments given particular environmental conditions -
            // i.e. accuracy values will in general vary over time for the same set of
            // instruments.
            DYNAMICALLY_CALIBRATED,
            // The accuracy values have been measured using some dynamic process that is able to
            // estimate the current performance of the instruments in use.
            MEASURED
          };

          // Enumeration of specialisations options for union class navigation_accuracy_type.
          enum navigation_accuracy_kind_type
          {
            // attitude_rotation_accuracy_type option for 
            ATTITUDE_ROTATION_ACCURACY_KIND,
            // attitude_rotation_rate_accuracy_type option for 
            ATTITUDE_ROTATION_RATE_ACCURACY_KIND,
            // position_offset_accuracy_type option for 
            POSITION_OFFSET_ACCURACY_KIND,
            // velocity_offset_accuracy_type option for 
            VELOCITY_OFFSET_ACCURACY_KIND,
            // depth_accuracy_type option for 
            DEPTH_ACCURACY_KIND,
            // own_position_accuracy_type option for 
            OWN_POSITION_ACCURACY_KIND,
            // own_velocity_accuracy_type option for 
            OWN_VELOCITY_ACCURACY_KIND
          };

          // This is the set of instrument types and other means by which navigation
          // information can be derived.
          enum navigation_derivation_kind_type
          {
            // Information derived from instruments based on an Inertial Navigation System (e.g.
            // Gyroscopes and Accelerometers)
            INS,
            // Information derived from instruments based on an Inertial Navigation System that
            // measures acceleration using single particle systems that exploit quantum
            // techniques.
            QUANTUM_INS,
            // Information derived from a satellite-based navigation system (e.g. GPS and
            // GLONASS)
            SATELLITE,
            // Information derived from an instrument that exploits the Doppler effect to
            // measure speed relative to the immediate environment, particularly water.
            DOPPLER_LOG,
            // Information derived from an instrument that exploits the electromagnetic dynamo
            // effect (conductor moving through an electromagnetic field produces a proportional
            // voltage) to measure speed relative to the immediate environment, particularly
            // water.
            EM_LOG,
            // Information derived from an instrument that measures the (subsurface) sea or air
            // pressure to estimate depth or altitude.
            PRESSURE_SENSOR,
            // Information derived from an instrument that measures the (subsurface) sea or air
            // density to estimate depth or altitude.
            DENSITY_SENSOR,
            // Information derived by sensing the external environment and resolving position
            // and orientation with reference to external data such as charts (e.g. SLAM
            // techniques).
            VISUAL_GEOLOCATION,
            // Information derived by sensing the Earth's gravitational and/or magnetic field
            // and/or their gradients using single particle systems that exploit quantum
            // effects.
            QUANTUM_GEOLOCATION,
            // Navigation based on the intersection of hyperbolic curves derived from long wave
            // radio signals from known ground stations with repeaters - e.g. LORAN B and C
            LW_HYPERBOLIC_INTERSECT,
            // Information derived by fusing data from more than one of these types of
            // derivation source.
            COMPOSITE,
            // Information is estimated from previously measured values (e.g. dead-reckoning).
            ESTIMATED,
            // Information has been supplied by the user (e.g. manual entry from a
            // non-integrated system).
            USER_SUPPLIED,
            // Information has been derived using some other technology
            OTHER_METHOD
          };

          // Struct of base attributes defined for class navigation_accuracy_type.
          struct navigation_accuracy_base_type
          {
            // The provenance or method by which the accuracy values have been derived
            accuracy_derivation_type derivation;
            // The accuracy (represented as one standard deviation) of the time value.
            org::omg::c4i::Domain_Model::Common_Types::Coordinates_and_Positions::duration_type time_accuracy;
          };

        };
      };
    };
  };
};
#endif