Analysis of the response of an HF radio signal to ionospheric plasma disturbances caused by acoustic shock waves

We analyze the form of the response of an HF radio signal scattered by the nonstationary disturbances of the electron density N_e caused by acoustic shock-wave disturbances in the upper atmosphere from rockets in the active section of the trajectory. A typical picture of the manifestation of additional modes in the spectrum of an oblique Doppler HF sounding signal is presented. The evolution of the signal response under different conditions of the experiment is discussed. Siberian Physicotechnical at Tomsk State University, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 42, No. 1, pp. 36–44, January, 1999.