double _terrain_sampling_distance;
int _polarization;
std::map<string, double[2]> _mat_database;
-
+ SGPropertyNode *_root_node;
int _propagation_model; /// 0 none, 1 round Earth, 2 ITM
+ double polarization_loss();
double ITM_calculate_attenuation(SGGeod tx_pos, double freq, int ground_to_air);
double LOS_calculate_attenuation(SGGeod tx_pos, double freq, int ground_to_air);
void clutterLoss(double freq, double distance_m, double itm_elev[], std::deque<string> materials,
FGRadioTransmission();
~FGRadioTransmission();
-
+ // a couple of setters and getters for convenience
void setFrequency(double freq, int radio);
double getFrequency(int radio);
void setTxPower(double txpower) { _transmitter_power = txpower; };
void setRxLineLosses(double rx_line_losses) { _rx_line_losses = rx_line_losses; };
void setPropagationModel(int model) { _propagation_model = model; };
void setPolarization(int polarization) { _polarization = polarization; };
+ // accessory functions for unit conversions
+ double watt_to_dbm(double power_watt);
+ double dbm_to_watt(double dbm);
+ double dbm_to_microvolt(double dbm);
+
+
// transmission_type: 0 for air to ground 1 for ground to air, 2 for air to air, 3 for pilot to ground, 4 for pilot to air
void receiveATC(SGGeod tx_pos, double freq, string text, int transmission_type);
void receiveChat(SGGeod tx_pos, double freq, string text, int transmission_type);