В ходе ионосферного эксперимента "Активный шнур" (февраль 1991 г.) обнаружено существенное увеличение интенсивности принимаемого на Земле телеметрического сигнала, излучаемого с борта метеоракеты МР-12, окружённой плазменной оболочкой, искусственно создаваемой с помощью ВЧ разряда. В статье приведены экспериментальные данные и дана их интерпретация.

A considerable increase in the intensity of a telemetric signal radiated from the sounding rocket MR-12 surrounded by a plasma shell was found in the active ionospheric experiment "AKTIVNY SHNUR" carried out in February, 1991. This increase was observed when the rocket altitudes ranged from 70 km to 110 km. The signal frequency was f=200 MHz and the plasma density near the rocket was about N= 109 cm-3. We believe that this effect takes place probably due to reradiation of the telemetric signal by the system consisting of a metal body of the rocket and its plasma shell. The formation of this nonuniform plasma structure around the rocket leads to the modification of the radiation pattern and to the increase of the radiation power in the direction of a receiver at the earth's surface.