Table 1
Locations of the Receiver (RX), Transmitters (TX), and ionosondes (WP 937, AU 930, and EG 931), along with their respective transmission frequencies and distances to the receiver, as used in this study. Please refer to the following website for more information regarding the locations of the CODAR transmitters, https://hfrnet.ucsd.edu/sitediag/stationList.php.
| Station | Frequency MHz | Geographic latitude | Geographic longitude | Distance to CARL | Midpoint to midpoint |
|---|---|---|---|---|---|
| BRIG – TX | 4.48 | 39.37° N | 74.39° W | 915 km | – |
| CORE – TX | 4.53 | 34.76° N | 76.41° W | 586 km | 272 km |
| NAPL – TX | 4.90 | 26.16° N | 81.81° W | 946 km | 870 km |
| PINS – TX | 4.45 | 27.42° N | 97.29° W | 1592 km | 1245 km |
| CARL – RX | – | 34.62° N | 82.83° W | – | – |
| WP 937 | 2.65–5 | 37.90° N | 75.50° W | 750 km | – |
| AU 930 | 2.65–5 | 30.40° N | 97.70° W | 1470 km | – |
| EG 931 | 2.65–5 | 30.50° N | 86.50° W | 573 km | – |
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