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Publikováno v:
Radio Science. 34:1513-1524
Radio sounding in the magnetosphere by the radio plasma imager on the IMAGE spacecraft will determine the dimensions and shape of the cavity between the magnetopause and the plasmapause. Omnidirectional transmission of pulsed radio signals results in
Publikováno v:
Radio Science. 32:2065-2073
This paper describes a waveform, modulator, and demodulator for which a U.S. patent has recently been granted. Using a programmable ionospheric sounder (the Digisonde portable sounder, or DPS), the composite spread-spectrum radio signal has been gene
Autor:
D. Mark Haines, Bert Weijers
Publikováno v:
MILCOM 1985 - IEEE Military Communications Conference.
Many HF communication requirements could be satisfied best by systems which are capable of real time propagation monitoring; however, approaches using ancillary ionospheric sounders have resulted in configurations which are too expensive, too bulky a
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