GSoC commit from Mara Branzanti:

- Galileo telemetry decoding updates

git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@406 64b25241-fba3-4117-9849-534c7e92360d

src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_e1b_telemetry_decoder_cc.cc

@@ -284,46 +284,44 @@ int galileo_e1b_telemetry_decoder_cc::general_work (int noutput_items, gr_vector
                      	    }
 
                      	    // Galileo_Navigation_Message d_nav; // Now is a class member object, to store the intermediate results from call to call
-                     	    //std::cout<<"page_string="<<page_String<<std::endl; //correctly transformed to char
 
              	             if (page_part_bits[0]==1)
                               {
-                             	 std::cout<<"Page Odd"<<std::endl;
+                             	 //std::cout<<"Page Odd"<<std::endl;
                              	 d_nav.split_page(page_String.c_str(), flag_even_word_arrived);
                              	 //decode_page.split_page(page_String, flag_even_word_arrived);
                              	 flag_even_word_arrived=0;
-                             	 std::cout << "page odd" << page_String << std::endl;
+                             	 //std::cout << "page odd" << page_String << std::endl;
                              	 //std::cout<<"Page type ="<< page_part_bits[1]<<std::endl;
                                }
                               else
                               {
-                             	 std::cout<<"Page Even"<<std::endl;
+                             	 //std::cout<<"Page Even"<<std::endl;
                              	 d_nav.split_page(page_String.c_str(), flag_even_word_arrived);
                              	 flag_even_word_arrived=1;
-                             	 std::cout << "page even" << std::endl << page_String << std::endl;
+                             	 //std::cout << "page even" << std::endl << page_String << std::endl;
                              	 //std::cout<<"Page type ="<< page_part_bits[1]<<std::endl;
                               }
 
              	            // 4. Push the new navigation data to the queues
-                      	    //ToDo: Decide if we have an updated ephemeris for the current satellite,
-             	            //      fill the ephemeris class and push the object to the concurrent queue
-             	            //      Do the same for the
-             	            // sample from Gps queues
 
 							if (d_nav.have_new_ephemeris()==true)
 							{
 								// get ephemeris object for this SV
 								Galileo_Ephemeris ephemeris=d_nav.get_ephemeris();//notice that the read operation will clear the valid flag
+								std::cout<<"New Galileo Ephemeris received for SV "<<d_satellite.get_PRN()<<std::endl;
 								d_ephemeris_queue->push(ephemeris);
 							}
-							if (d_nav.have_new_iono()==true)
+							if (d_nav.have_new_iono_and_GST()==true)
 							{
 								Galileo_Iono iono=d_nav.get_iono(); //notice that the read operation will clear the valid flag
+								std::cout<<"New Galileo IONO model received for SV "<<d_satellite.get_PRN()<<std::endl;
 								d_iono_queue->push(iono);
 							}
 							if (d_nav.have_new_utc_model()==true)
 							{
 								Galileo_Utc_Model utc_model=d_nav.get_utc_model(); //notice that the read operation will clear the valid flag
+								std::cout<<"New Galileo UTC model received for SV "<<d_satellite.get_PRN()<<std::endl;
 								d_utc_model_queue->push(utc_model);
 							}
 

src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_e1b_telemetry_decoder_cc.h

@@ -118,7 +118,7 @@ private:
     // navigation message vars
     Galileo_Navigation_Message d_nav;
 
-    //ToDo: Update the Galileo_Ephemeris,Galileo_Iono,Galileo_Utc_Model, and Galileo_Almanac classes to store the Galileo parameters
+
     // Galileo ephemeris queue
     concurrent_queue<Galileo_Ephemeris> *d_ephemeris_queue;
     // ionospheric parameters queue

src/core/system_parameters/galileo_navigation_message.cc

@@ -45,6 +45,24 @@ typedef boost::crc_optimal<24, 0x1864CFBu, 0x0, 0x0, false, false> CRC_Galileo_I
 void Galileo_Navigation_Message::reset()
 {
 	 flag_even_word = 0;
+
+	 flag_all_ephemeris = false; // flag indicating that all words containing ephemeris have been received
+	 flag_ephemeris_1 = false;    // flag indicating that ephemeris 1/4 (word 1) have been received
+	 flag_ephemeris_2 = false;    // flag indicating that ephemeris 2/4 (word 2) have been received
+	 flag_ephemeris_3 = false;    // flag indicating that ephemeris 3/4 (word 3) have been received
+	 flag_ephemeris_4 = false;    // flag indicating that ephemeris 4/4 (word 4) have been received
+
+	 flag_iono_and_GST = false;   // flag indicating that ionospheric parameters (word 5) have been received
+	 flag_utc_model = false;      // flag indicating that utc model parameters (word 6) have been received
+
+	 flag_all_almanac = false;	  // flag indicating that all almanac have been received
+	 flag_almanac_1 = false;      // flag indicating that almanac 1/4 (word 7) have been received
+	 flag_almanac_2 = false;      // flag indicating that almanac 2/4 (word 8) have been received
+	 flag_almanac_3 = false;      // flag indicating that almanac 3/4 (word 9) have been received
+	 flag_almanac_4 = false;      // flag indicating that almanac 4/4 (word 10) have been received
+
+
+
 	 /*Word type 1: Ephemeris (1/4)*/
 	 IOD_nav_1 = 0;
 	 t0e_1 = 0;
@@ -345,7 +363,6 @@ bool Galileo_Navigation_Message::read_navigation_bool(std::bitset<GALILEO_DATA_J
 
 void Galileo_Navigation_Message::split_page(const char *page, int flag_even_word){
 
-	// ToDo: Replace all the C structures and string operations with std::string and std::stringstream C++ classes.
 	// ToDo: Clean all the tests and create an independent google test code for the telemetry decoder.
 
 
@@ -405,25 +422,17 @@ void Galileo_Navigation_Message::split_page(const char *page, int flag_even_word
 					std::string TLM_word_for_CRC;
 					TLM_word_for_CRC=TLM_word_for_CRC_stream.str().substr(0,GALILEO_DATA_FRAME_BITS);
 
-					std::cout <<"frame for CRC="<<TLM_word_for_CRC<<std::endl;
-					std::cout <<"frame length="<<TLM_word_for_CRC.length()<<std::endl;
 					std::bitset<GALILEO_DATA_FRAME_BITS> TLM_word_for_CRC_bits(TLM_word_for_CRC);
 					std::bitset<24> checksum(CRC_data);
 
-					if (Tail_odd.compare(correct_tail) != 0)
+					//if (Tail_odd.compare(correct_tail) != 0)
-							std::cout << "Tail odd is not correct!" << std::endl;
+					//		std::cout << "Tail odd is not correct!" << std::endl;
-					else std::cout<<"Tail odd is correct!"<<std::endl;
+					//else std::cout<<"Tail odd is correct!"<<std::endl;
 
 					if (CRC_test(TLM_word_for_CRC_bits,checksum.to_ulong())==true)
 					{
 						// CRC correct: Decode word
 						std::cout<<"CRC correct!"<<std::endl;
-					}else{
-						// CRC wrong.. discard frame
-						std::cout<<"CRC error!"<<std::endl;
-					}
-					//********** end of CRC checksum control ***/
-
 
 						std::string page_number_bits = Data_k.substr (0,6);
 						//std::cout << "Page number bits from Data k" << std::endl << page_number_bits << std::endl;
@@ -436,6 +445,32 @@ void Galileo_Navigation_Message::split_page(const char *page, int flag_even_word
 
 						page_jk_decoder(Data_jk_ephemeris.c_str()); // Corresponding to ephemeris_decode.m in matlab code
 
+						/*if (have_new_ephemeris()==true){
+							std::cout<<"All ephemeris have been received" << std::endl;
+						}*/
+
+						double t_GST;
+						if ((have_new_iono_and_GST() == true) and (flag_all_ephemeris==true))
+						{
+							std::cout <<"GST and ephemeris parameters have been received, now it is possible to compute satellite position"<< std::endl;
+							t_GST = Galileo_System_Time(WN_5, TOW_5);
+							std::cout << "Galileo System Time [sec]: " << t_GST << std::endl;
+							satellitePosition(t_GST);
+							flag_all_ephemeris=false;
+						}
+
+						double t_UTC;
+						if ((have_new_iono_and_GST() == true) and (have_new_utc_model() == true))
+						{
+							t_UTC = GST_to_UTC_time(t_GST, WN_5);
+							std::cout << "UTC [sec]: " << t_UTC << std::endl;
+						}
+
+					}else{
+						// CRC wrong.. discard frame
+						std::cout<<"CRC error!"<<std::endl;
+					}
+					//********** end of CRC checksum control ***/
 				}
 
 		} /*end if (page_string.at(0)=='1') */
@@ -445,34 +480,72 @@ void Galileo_Navigation_Message::split_page(const char *page, int flag_even_word
 	//std::cout << "Page even in split page" << std::endl << page_Even << std::endl;
 	std::string tail_Even =  page_string.substr (114,6);
 	//std::cout << "tail_even_string: " << tail_Even <<std::endl;
-	if (tail_Even.compare(correct_tail) != 0)
+	//if (tail_Even.compare(correct_tail) != 0)
-		 std::cout << "Tail even is not correct!" << std::endl;
+	//	 std::cout << "Tail even is not correct!" << std::endl;
-	else std::cout<<"Tail even is correct!"<< std::endl;
+	//else std::cout<<"Tail even is correct!"<< std::endl;
 
 	}
 
 }
 
 
-bool Galileo_Navigation_Message::have_new_ephemeris()
+bool Galileo_Navigation_Message::have_new_ephemeris() //Check if we have a new ephemeris stored in the galileo navigation class
 {
-	//ToDo: Check if whe have a new ephemeris data set stored in the galileo navigation class
+	/*std::cout << "flag ephememeris 1: " << flag_ephemeris_1 <<std::endl;
+	std::cout << "flag ephememeris 2: " << flag_ephemeris_2 <<std::endl;
+	std::cout << "flag ephememeris 3: " << flag_ephemeris_3 <<std::endl;
+	std::cout << "flag ephememeris 4: " << flag_ephemeris_4 <<std::endl;*/
+	if ((flag_ephemeris_1 == true) and (flag_ephemeris_2 == true) and (flag_ephemeris_3 == true) and (flag_ephemeris_4 == true))
+	{
+		std::cout<< "All ephemeris have been received"<< std::endl;
+		flag_ephemeris_1 = false;// clear the flag
+		flag_ephemeris_2 = false;// clear the flag
+		flag_ephemeris_3 = false;// clear the flag
+		flag_ephemeris_4 = false;// clear the flag
+		flag_all_ephemeris = true;
+		return true;
+	 }
+	else
 		return false;
 }
 
-bool Galileo_Navigation_Message::have_new_iono()
+
+bool Galileo_Navigation_Message::have_new_iono_and_GST() //Check if we have a new iono data set stored in the galileo navigation class
 {
-	//ToDo: Check if whe have a new iono data set stored in the galileo navigation class
+	if (flag_iono_and_GST == true)
+	{
+		flag_iono_and_GST=false; // clear the flag
+		return true;
+	}else
 		return false;
 }
-bool Galileo_Navigation_Message::have_new_utc_model()
+
+
+bool Galileo_Navigation_Message::have_new_utc_model() // Check if we have a new utc data set stored in the galileo navigation class
 {
-	//ToDo: Check if whe have a new utc data set stored in the galileo navigation class
+	if (flag_utc_model == true)
+	{
+		flag_utc_model=false; // clear the flag
+		return true;
+	}
+	else
 		return false;
 }
-bool Galileo_Navigation_Message::have_new_almanac()
+
+
+bool Galileo_Navigation_Message::have_new_almanac() //Check if we have a new almanac data set stored in the galileo navigation class
 {
-	//ToDo: Check if whe have a new almanac data set stored in the galileo navigation class
+	if ((flag_almanac_1 == true) and (flag_almanac_2 == true) and (flag_almanac_3 == true) and (flag_almanac_4 == true))
+	{
+		//std::cout<< "All almanac have been received"<< std::endl;
+		flag_almanac_1 = false;
+		flag_almanac_2 = false;
+		flag_almanac_3 = false;
+		flag_almanac_4 = false;
+		flag_all_almanac = true;
+		return true;
+	 }
+	else
 		return false;
 }
 
@@ -646,7 +719,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         		A_1 = (double)read_navigation_unsigned(data_jk_bits, A_1_bit);
         		A_1 = A_1 * A_1_LSB_gal;
         		std::cout << "A_1= " << A_1 <<std::endl;
-
+        		flag_ephemeris_1 = true;
         		break;
 
         	case 2:  /*Word type 2: Ephemeris (2/4)*/
@@ -665,6 +738,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         		iDot_2 = (double)read_navigation_unsigned(data_jk_bits, iDot_2_bit);
         		iDot_2 = iDot_2 * iDot_2_LSB;
         		std::cout<<"iDot_2= "<< iDot_2 <<std::endl;
+        		flag_ephemeris_2 = true;
         		break;
 
         	case 3:  /*Word type 3: Ephemeris (3/4) and SISA*/
@@ -690,6 +764,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         		std::cout<<"C_rs_3= "<< C_rs_3 <<std::endl;
         		SISA_3 = (double)read_navigation_unsigned(data_jk_bits, SISA_3_bit);
         		std::cout<<"SISA_3= "<< SISA_3 <<std::endl;
+        		flag_ephemeris_3 = true;
         		break;
 
         	case 4: /* Word type 4: Ephemeris (4/4) and Clock correction parameters*/
@@ -718,6 +793,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         		std::cout<<"af2_4 = "<< af2_4  <<std::endl;
         		spare_4 = (double)read_navigation_unsigned(data_jk_bits, spare_4_bit);
         		std::cout<<"spare_4 = "<< spare_4  <<std::endl;
+        		flag_ephemeris_4 = true;
         		break;
 
         	case 5: /*Word type 5: Ionospheric correction, BGD, signal health and data validity status and GST*/
@@ -764,6 +840,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         		std::cout<<"TOW_5= "<< TOW_5 <<std::endl;
         		spare_5 = (double)read_navigation_unsigned(data_jk_bits, spare_5_bit);
         		std::cout<<"spare_5= "<< spare_5 <<std::endl;
+        		flag_iono_and_GST = true;
         		break;
 
         	case 6: /*Word type 6: GST-UTC conversion parameters*/
@@ -796,7 +873,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
 
         	    TOW_6= (double)read_navigation_unsigned(data_jk_bits, TOW_6_bit);
         	    std::cout << "TOW_6= " << TOW_6 << std::endl;
-
+        	    flag_utc_model = true;
         	    break;
 
          case 7: /*Word type 7: Almanac for SVID1 (1/2), almanac reference time and almanac reference week number*/
@@ -841,7 +918,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         	    M0_7= (double)read_navigation_unsigned(data_jk_bits, M0_7_bit);
         	    M0_7= M0_7 * M0_7_LSB;
         	    std::cout << "M0_7= " << M0_7 << std::endl;
-
+        	    flag_almanac_1 = true;
         	    break;
 
         case 8: /*Word type 8: Almanac for SVID1 (2/2) and SVID2 (1/2)*/
@@ -889,7 +966,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         	    Omega_dot_8= (double)read_navigation_unsigned(data_jk_bits, Omega_dot_8_bit);
         	    Omega_dot_8= Omega_dot_8 * Omega_dot_8_LSB;
         	    std::cout << "Omega_dot_8= " << Omega_dot_8 << std::endl;
-
+        	    flag_almanac_2 = true;
         	    break;
 
         	case 9: /*Word type 9: Almanac for SVID2 (2/2) and SVID3 (1/2)*/
@@ -941,7 +1018,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
         	    delta_i_9= (double)read_navigation_unsigned(data_jk_bits, delta_i_9_bit);
         	    delta_i_9= delta_i_9 * delta_i_9_LSB;
         	    std::cout << "delta_i_9= " << delta_i_9 << std::endl;
-
+        	    flag_almanac_3 = true;
         	    break;
 
         case 10: /*Word type 10: Almanac for SVID3 (2/2) and GST-GPS conversion parameters*/
@@ -989,7 +1066,7 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
 
         	    WN_0G_10= (double)read_navigation_unsigned(data_jk_bits, WN_0G_10_bit);
         	    std::cout << "WN_0G_10= " << WN_0G_10 << std::endl;
-
+        	    flag_almanac_4 = true;
         	    break;
 
        case 0: /*Word type 0: I/NAV Spare Word*/
@@ -1008,82 +1085,6 @@ int Galileo_Navigation_Message::page_jk_decoder(const char *data_jk)
    return page_number;
 }
 
-/*Galileo_Ephemeris Galileo_Navigation_Message::get_Galileo_ephemeris()
-{
-	Galileo_Ephemeris Gal_ephemeris;
-	Gal_ephemeris.M0_1 = M0_1;		// Mean anomaly at reference time [semi-circles]
-	Gal_ephemeris.delta_n_3 = delta_n_3;		// Mean motion difference from computed value  [semi-circles/sec]
-	Gal_ephemeris.e_1 =	e_1;	// Eccentricity
-	Gal_ephemeris.A_1 =  A_1; 	// Square root of the semi-major axis [metres^1/2]
-	Gal_ephemeris.OMEGA_0_2 = OMEGA_0_2;// Longitude of ascending node of orbital plane at weekly epoch [semi-circles]
-	Gal_ephemeris.i_0_2 = i_0_2;    // Inclination angle at reference time  [semi-circles]
-	Gal_ephemeris.omega_2 = omega_2;  // Argument of perigee [semi-circles]
-	Gal_ephemeris.OMEGA_dot_3 =	OMEGA_dot_3;	// Rate of right ascension [semi-circles/sec]
-	Gal_ephemeris.iDot_2 = iDot_2;   // Rate of inclination angle [semi-circles/sec]
-	Gal_ephemeris.C_uc_3 = C_uc_3;		// Amplitude of the cosine harmonic correction term to the argument of latitude [radians]
-	Gal_ephemeris.C_us_3 = C_us_3;			// Amplitude of the sine harmonic correction term to the argument of latitude [radians]
-	Gal_ephemeris.C_rc_3 = C_rc_3;			// Amplitude of the cosine harmonic correction term to the orbit radius [meters]
-	Gal_ephemeris.C_rs_3 = C_rs_3;			// Amplitude of the sine harmonic correction term to the orbit radius [meters]
-	Gal_ephemeris.C_ic_4 = C_ic_4;		// Amplitude of the cosine harmonic correction 	term to the angle of inclination [radians]
-	Gal_ephemeris.C_is_4 = C_is_4;		// Amplitude of the sine harmonic correction term to the angle of inclination [radians]
-	Gal_ephemeris.t0e_1 = t0e_1;	// Ephemeris reference time [s]
-
-	/*Clock correction parameters*
-	Gal_ephemeris.t0c_4 = t0c_4;			//Clock correction data reference Time of Week [sec]
-	Gal_ephemeris.af0_4 = af0_4;			//SV clock bias correction coefficient [s]
-	Gal_ephemeris.af1_4 = af1_4;		//SV clock drift correction coefficient [s/s]
-	Gal_ephemeris.af2_4 = af2_4;		//SV clock drift rate correction coefficient [s/s^2]
-
-	/*GST*
-	Gal_ephemeris.WN_5 = WN_5;//Week number
-	Gal_ephemeris.TOW_5 = TOW_5;//Time of Week
-
-	return Gal_ephemeris;
-}*/
-
-
-/*Galileo_Iono Galileo_Navigation_Message::get_Galileo_Iono()
-{
-	Galileo_Iono Gal_iono;
-	 /*Ionospheric correction
-	 /*Az
-	 Gal_iono.ai0_5 = ai0_5;		//Effective Ionisation Level 1st order parameter [sfu]
-	 Gal_iono.ai1_5 = ai1_5;		//Effective Ionisation Level 2st order parameter [sfu/degree]
-	 Gal_iono.ai2_5 = ai2_5;		//Effective Ionisation Level 3st order parameter [sfu/degree]
-
-	 /*Ionospheric disturbance flag
-	 Gal_iono.Region1_flag_5 = Region1_flag_5;	// Ionospheric Disturbance Flag for region 1
-	 Gal_iono.Region2_flag_5 = Region2_flag_5;	// Ionospheric Disturbance Flag for region 2
-	 Gal_iono.Region3_flag_5 = Region3_flag_5;	// Ionospheric Disturbance Flag for region 3
-	 Gal_iono.Region4_flag_5 = Region4_flag_5;	// Ionospheric Disturbance Flag for region 4
-	 Gal_iono.Region5_flag_5 = Region5_flag_5;	// Ionospheric Disturbance Flag for region 5
-
-	return Gal_iono;
-}*/
-
-
-/*Galileo_Utc_Model Galileo_Navigation_Message::get_Galileo_utc_model()
-{
-	Galileo_Utc_Model Gal_utc_model;
-
-	//Gal_utc_model.valid = flag_utc_model_valid;
-    /*Word type 6: GST-UTC conversion parameters
-    Gal_utc_model.A0_6 = A0_6;
-    Gal_utc_model.A1_6 = A1_6;
-    Gal_utc_model.Delta_tLS_6 = Delta_tLS_6;
-    Gal_utc_model.t0t_6 = t0t_6;
-    Gal_utc_model.WNot_6 = WNot_6;
-    Gal_utc_model.WN_LSF_6 = WN_LSF_6;
-    Gal_utc_model.DN_6 = DN_6;
-    Gal_utc_model.Delta_tLSF_6 = Delta_tLSF_6;
-
-    /*GST
-    //Gal_utc_model.WN_5 = WN_5; //Week number
-    //Gal_utc_model.TOW_5 = WN_5; //Time of Week
-
-    return Gal_utc_model;
-}*/
-
 
 
 void Galileo_Navigation_Message::satellitePosition(double transmitTime) //when this function in used, the input must be the transmitted time (t) in second computed by Galileo_System_Time (above function)
@@ -1175,13 +1176,18 @@ void Galileo_Navigation_Message::satellitePosition(double transmitTime) //when t
     galileo_satpos_Y = cos(u) * r * sin(Omega) + sin(u) * r * cos(i) * cos(Omega); //***********************NOTE: in GALILEO ICD this expression is not correct because it has minus (- sin(u) * r * cos(i) * cos(Omega)) instead of plus
     galileo_satpos_Z = sin(u) * r * sin(i);
 
+    std::cout << "Galileo satellite position X [m]: " << galileo_satpos_X << std::endl;
+    std::cout << "Galileo satellite position Y [m]: " << galileo_satpos_Y << std::endl;
+    std::cout << "Galileo satellite position Z [m]: " << galileo_satpos_Z << std::endl;
+    double vector_position = sqrt(galileo_satpos_X*galileo_satpos_X + galileo_satpos_Y*galileo_satpos_Y + galileo_satpos_Z*galileo_satpos_Z);
+    std::cout << "Vector Earth Center-Satellite [Km]: " << vector_position/1000 << std::endl;
+
     // Satellite's velocity. Can be useful for Vector Tracking loops
     double Omega_dot = OMEGA_dot_3 - GALILEO_OMEGA_EARTH_DOT;
     galileo_satvel_X = - Omega_dot * (cos(u) * r + sin(u) * r * cos(i)) + galileo_satpos_X * cos(Omega) - galileo_satpos_Y * cos(i) * sin(Omega);
     galileo_satvel_Y = Omega_dot * (cos(u) * r * cos(Omega) - sin(u) * r * cos(i) * sin(Omega)) + galileo_satpos_X * sin(Omega) + galileo_satpos_Y * cos(i) * cos(Omega);
     galileo_satvel_Z = galileo_satpos_Y * sin(i);
 
-
 }
 
 
@@ -1215,7 +1221,7 @@ double Galileo_Navigation_Message::Galileo_System_Time(double WN, double TOW){
 	double t=0;
 	double sec_in_day = 86400;
 	double day_in_week = 7;
-	t = WN*sec_in_day*day_in_week+ TOW; // second from the origin of the Galileo time
+	t = WN * sec_in_day * day_in_week + TOW; // second from the origin of the Galileo time
 
 	return t;
 
@@ -1286,7 +1292,7 @@ double Galileo_Navigation_Message::sv_clock_relativistic_term(double transmitTim
     return Galileo_dtr;
 }
 
-double Galileo_Navigation_Message::GST_to_UTC_time(double t_e, int WN)
+double Galileo_Navigation_Message::GST_to_UTC_time(double t_e, int WN) //t_e is GST (WN+TOW) in second
 {
 	double t_Utc;
 		double t_Utc_daytime;

src/core/system_parameters/galileo_navigation_message.h

@@ -73,6 +73,21 @@ private:
 public:
 	int flag_even_word;
 
+	bool flag_all_ephemeris; // flag indicating that all words containing ephemeris have been received
+	bool flag_ephemeris_1;    // flag indicating that ephemeris 1/4 (word 1) have been received
+	bool flag_ephemeris_2;    // flag indicating that ephemeris 2/4 (word 2) have been received
+	bool flag_ephemeris_3;    // flag indicating that ephemeris 3/4 (word 3) have been received
+	bool flag_ephemeris_4;    // flag indicating that ephemeris 4/4 (word 4) have been received
+
+	bool flag_iono_and_GST;   // flag indicating that ionospheric and GST parameters (word 5) have been received
+	bool flag_utc_model;      // flag indicating that utc model parameters (word 6) have been received
+
+	bool flag_all_almanac;	  // flag indicating that all almanac have been received
+	bool flag_almanac_1;      // flag indicating that almanac 1/4 (word 7) have been received
+	bool flag_almanac_2;      // flag indicating that almanac 2/4 (word 8) have been received
+	bool flag_almanac_3;      // flag indicating that almanac 3/4 (word 9) have been received
+	bool flag_almanac_4;      // flag indicating that almanac 4/4 (word 10) have been received
+
 	/*Word type 1: Ephemeris (1/4)*/
 		int IOD_nav_1;  // IOD_nav page 1
 		double t0e_1; 	// Ephemeris reference time [s]
@@ -243,7 +258,7 @@ public:
 	/*
 	 * \brief Returns true if new Iono model has arrived. The flag is set to false when the function is executed
 	 */
-	bool have_new_iono();
+	bool have_new_iono_and_GST();
 	/*
 	 * \brief Returns true if new UTC model has arrived. The flag is set to false when the function is executed
 	 */