src/Instrumentation/tacan.hxx

   1 // dme.hxx - distance-measuring equipment.
   2 // Written by David Megginson, started 2003.
   3 //
   4 // This file is in the Public Domain and comes with no warranty.
   5
   6
   7 #ifndef __INSTRUMENTS_TACAN_HXX
   8 #define __INSTRUMENTS_TACAN_HXX 1
   9
  10 #ifndef __cplusplus
  11 # error This library requires C++
  12 #endif
  13
  14 #include <simgear/math/point3d.hxx>
  15 #include <simgear/props/props.hxx>
  16 #include <simgear/structure/subsystem_mgr.hxx>
  17
  18
  19 /**
  20  * Model a TACAN radio.
  21  *
  22  * Input properties:
  23  *
  24  * /position/longitude-deg
  25  * /position/latitude-deg
  26  * /position/altitude-ft
  27  * /systems/electrical/outputs/TACAN
  28  * /instrumentation/"name"/serviceable
  29  * /instrumentation/"name"/frequencies/source
  30  * /instrumentation/"name"/frequencies/selected-mhz
  31  *
  32  * Output properties:
  33  *
  34  * /instrumentation/"name"/in-range
  35  * /instrumentation/"name"/indicated-distance-nm
  36  * /instrumentation/"name"/indicated-ground-speed-kt
  37  * /instrumentation/"name"/indicated-time-kt
  38  */
  39 class TACAN : public SGSubsystem
  40 {
  41
  42 public:
  43
  44     TACAN ( SGPropertyNode *node );
  45     TACAN ();
  46     virtual ~TACAN ();
  47
  48     virtual void init ();
  49     virtual void update (double delta_time_sec);
  50
  51 private:
  52
  53     void search (double frequency, double longitude_rad,
  54                  double latitude_rad, double altitude_m);
  55     double searchChannel (const string& _channel);
  56
  57     SGPropertyNode_ptr _longitude_node;
  58     SGPropertyNode_ptr _latitude_node;
  59     SGPropertyNode_ptr _altitude_node;
  60     SGPropertyNode_ptr _serviceable_node;
  61     SGPropertyNode_ptr _electrical_node;
  62     SGPropertyNode_ptr _source_node;
  63     SGPropertyNode_ptr _frequency_node;
  64
  65     SGPropertyNode_ptr _in_range_node;
  66     SGPropertyNode_ptr _distance_node;
  67     SGPropertyNode_ptr _speed_node;
  68     SGPropertyNode_ptr _time_node;
  69     SGPropertyNode_ptr _bearing_node;
  70     SGPropertyNode_ptr _ident_node;
  71     SGPropertyNode_ptr _name_node;
  72
  73     SGPropertyNode_ptr _carrier_name_node;
  74     SGPropertyNode_ptr _channel_node;
  75
  76     double _last_distance_nm;
  77     double _last_frequency_mhz;
  78     double _time_before_search_sec;
  79
  80     bool _carrier_valid;
  81     bool _transmitter_valid;
  82
  83     Point3D _transmitter;
  84     double _transmitter_lat, _transmitter_lon;
  85     double _transmitter_elevation_ft;
  86     double _transmitter_range_nm;
  87     double _transmitter_bearing_deg;
  88     double _transmitter_bias;
  89     string _transmitter_name;
  90
  91     double _carrier_lat, _carrier_lon;
  92     double _carrier_elevation_ft;
  93     double _carrier_range_nm;
  94     double _carrier_bearing_deg;
  95     double _carrier_bias;
  96     string _carrier_name;
  97
  98     string name;
  99     int num;
 100
 101 };
 102
 103
 104 #endif // __INSTRUMENTS_TACAN_HXX