Research Article
The Vertical Ionosphere Parameters Inversion for High Frequency Surface Wave Radar
Figure 5
Pattern of log periodic dipole transmitting antenna. The maximum length is 12.5 m. The minimum length is 2.5 m. The copper ground screen is 100 m2. The diameter of grid is 10 cm.
| (a) 3D pattern of transmitting antenna at 9 MHz |
| (b) 3 MHz |
| (c) 6 MHz |
| (d) 9 MHz |
| (e) 15 MHz |