Update README

Author: Rango-T10000

README.md

@@ -162,26 +162,26 @@ Generally, gnss-sdr will output some decoded files, for example in above display
 ### 6. Extract information from decoded files
 I provide the code for extracting information from the decoded files, including `.nema` file, `.xxo` file, and `.rnx` file download from the Internet. Using this code, you can extract the following information recorded in the `csv` files like the examples in the folder `./code/data/ant0.csv` :
 ```
-Timestamp,Rx_X,Rx_Y,Rx_Z,PRN,Sat_X,Sat_Y,Sat_Z,Carrier_Phase((cycles),RSS((dBHz)
-2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G26,-17471192.10001667,19679063.951060183,952052.2374084838,128088169.369,42.692
-2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G28,8116807.666167371,-25155650.334401198,-2654593.203265004,135533226.424,41.392
-2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G29,22033026.332381085,9673379.434590535,11064110.709128043,146178780.326,41.885
-2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G32,15340710.572897878,19983728.84202612,8933294.964710569,131743103.517,44.892
-2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G26,-17471242.922931515,19679012.983145047,952140.3493899454,128088169.369,42.692
-2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G28,8116994.357508367,-25155562.527996276,-2654856.4888132513,135533226.424,41.392
-2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G29,22033206.028190624,9673365.088513652,11063765.570014128,146178780.326,41.885
-2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G32,15340915.738580769,19983360.801088165,8933773.831885163,131743103.517,44.892
-2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G26,-17471293.743363842,19678962.01692558,952228.459365025,128088169.369,42.692
-2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G28,8117181.050688698,-25155474.716655854,-2655119.7733534994,135533226.424,41.392
-2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G29,22033385.718153264,9673350.7373472,11063420.43332684,146178780.326,41.885
-2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G32,15341120.890295621,19982992.75409232,8934252.690786626,131743103.517,44.892
+Timestamp,Rx_X,Rx_Y,Rx_Z,PRN,Sat_X,Sat_Y,Sat_Z,Elevation,Azimuth,Carrier_Phase(cycles),RSS(dBHz)
+2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G26,-17471192.10001667,19679063.951060183,952052.2374084838,69.0,240.0,128088169.369,42.692
+2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G28,8116807.666167371,-25155650.334401198,-2654593.203265004,47.0,10.0,135533226.424,41.392
+2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G29,22033026.332381085,9673379.434590535,11064110.709128043,22.0,79.0,146178780.326,41.885
+2024-12-27 02:43:48.390000,-2418189.139113585,5385823.559379437,2405652.2286304315,G32,15340710.572897878,19983728.84202612,8933294.964710569,60.0,90.0,131743103.517,44.892
+2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G26,-17471242.922931515,19679012.983145047,952140.3493899454,69.0,240.0,128088169.369,42.692
+2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G28,8116994.357508367,-25155562.527996276,-2654856.4888132513,47.0,10.0,135533226.424,41.392
+2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G29,22033206.028190624,9673365.088513652,11063765.570014128,22.0,79.0,146178780.326,41.885
+2024-12-27 02:43:48.490000,-2418191.1087058643,5385818.364426423,2405653.4754515854,G32,15340915.738580769,19983360.801088165,8933773.831885163,60.0,90.0,131743103.517,44.892
+2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G26,-17471293.743363842,19678962.01692558,952228.459365025,69.0,240.0,128088169.369,42.692
+2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G28,8117181.050688698,-25155474.716655854,-2655119.7733534994,47.0,10.0,135533226.424,41.392
+2024-12-27 02:43:48.590000,-2418197.3144785874,5385825.825604284,2405664.283551862,G29,22033385.718153264,9673350.7373472,11063420.43332684,22.0,79.0,146178780.326,41.885
 ```
 
 Each line in above extracted data includes:
 - Timestamp of the received signal (UTC)
-- Receiver position (Rx_X, Rx_Y, Rx_Z); ECEF coordinates
-- Satellite position (Sat_X, Sat_Y, Sat_Z); ECEF coordinates
+- Receiver position (Rx_X, Rx_Y, Rx_Z); ECEF coordinates; Unit: m
+- Satellite position (Sat_X, Sat_Y, Sat_Z); ECEF coordinates; Unit: m
 - Satellite PRN (ID)
+- Elevation and Azimuth
 - Carrier phase (cycles)
 - Received signal strength, RSS (dBHz)