Abstract
AbstractLow‐frequency radio signals of natural origins have been registered in the heliosphere for more than 50 years, mainly being a product of interaction between the solar wind and the planetary magnetospheres. Withing these signals, series of man‐made transmissions have been detected, coming from the LORAN‐C navigation system and the terrestrial longwave broadcasting stations. The paper compares these two types of signals in the terms of their power distribution, which affects their readability and achieved effective range in space, as well as their possible usability in future research basing on the type of information they deliver. It is indicated that the less‐investigated longwave signals are more efficient, spectrum‐powerful and information‐rich that the LORAN‐C system, offering more possibilities for heliospheric and near‐Earth space research.
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