Peculiar lunar echoes at 13.866 MHz
Tóm tắt
Peculiar lunar echoes obtained with a radar operating at 13.866 MHz are presented and discussed. Some of their features are reconduced to a total or to a partial guidance by ionospheric and magnetospheric irregularities aligned with the geomagnetic lines of force. Precisely, such irregularities are intervening as natural wave guides or as leaky-wave antennas. In the latter case they are characterized by very high gains so that one can speak of a sort of focusing. This focusing could be used for the observation of magnetospheric turbulence, could explain some of the solar bursts and could suggest a practical utilization of the round-the-world propagation.
Tài liệu tham khảo
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