Problem of Topside Ionosphere Sounding Using Chirp Signals

The article presents the results of using receiving and transmitting dipole antennas with a common center for sounding the ionosphere by a chirp signal. Conclusions are drawn about the possibility of using such facilities for sounding the external ionosphere. During tests conducted on a specially designed antenna stand, it was found that the coupling coefficient of the transmitting and receiving antennas at mutual angles of 45° has a value of no more than -10 dB, and the difference of the coupling coefficients of transmitting and receiving antennas of mutual angles of 45° and 90° has a value of about 15 dB.