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Description

The radio-wave interaction technique has been applied to the study of the lower ionosphere at College, Alaska. The system employs a pulsed wanted transmitter operating at a frequency of 4.86 Mc/s and a pulsed disturbing transmitter operating at 17.5 Mc/s with an output power of 100 kw. Radio-wave interaction has been recorded over the elevation range from 30 to 70 km. The system is best adapted to observations under somewhat disturbed ionospheric conditions. The observed interaction normally shows significant variation within time intervals of the order of minutes. Some collision frequency and electron density values have been derived. The disturbing transmitter, the 4x4 array of 3-element Yagi antennas, and the receiving circuitry have been adapted to allow the reception of backscatter signals at the disturbing frequency or cosmic noise on an adjacent frequency. Analysis of system performance in the various modes of operation is continuing.

Publication Date

8-17-1961

Keywords

Radio waves

Handle

http://hdl.handle.net/11122/15352

Experiment Luxembourg

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