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Abstract
We analyze the form of the response of an HF radio signal scattered by the nonstationary disturbances of the electron density N^sub 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.[PUBLICATION ABSTRACT]