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


module org {


  module omg {


    module c4i {


      module Domain_Model {


        module Navigation_Domain {



          // Version 1.0
          // The set of methods describing the provenance of the accuracy values
          enum accuracy_derivation_type
          {
          	// 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 values have been set using engineering judgement.
          	ESTIMATED,
          	// The accuracy values have been measured using some dynamic process that is able
          	// to estimate the current performance of the instruments in use.
          	MEASURED,
          	// The accuracy values have been calibrated using real data to derive fixed
          	// accuracy values for particular instruments.
          	STATICALLY_CALIBRATED
          };
  




          // Version 1.0
          // A base type for classes that report the accuracy of navigational measurements
          struct navigation_accuracy_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;
          };
  




          // Version 1.0
          // This is the set of instrument types and other means by which navigation
          // information can be derived.
          enum navigation_derivation_kind_type
          {
          	// Information derived by fusing data from more than one of these types of
          	// derivation source.
          	COMPOSITE,
          	// Information derived from an instrument that measures the (subsurface) sea or
          	// air density to estimate depth or altitude.
          	DENSITY_SENSOR,
          	// 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 is estimated from previously measured values (e.g. dead-reckoning).
          	ESTIMATED,
          	// Information derived from instruments based on an Inertial Navigation System (e.
          	// g. Gyroscopes and Accelerometers)
          	INS,
          	// 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 has been derived using some other technology
          	OTHER_METHOD,
          	// Information derived from an instrument that measures the (subsurface) sea or
          	// air pressure to estimate depth or altitude.
          	PRESSURE_SENSOR,
          	// 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,
          	// 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 has been supplied by the user (e.g. manual entry from a non-
          	// integrated system).
          	USER_SUPPLIED,
          	// 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
          };
  



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