We report on an experimental demonstration of two-way communication between sky and underwater for the first time. Signal transmission from sky to underwater is realized by the thermoacoustic effect (TE), while from underwater to sky, this is based on the microwave vibration measurement (MVM). With a homemade experimental setup, the two-way transmission of “UESTC” is realized. This study suggests that TE combined with MVM has the potential to be used for two-way wireless communication between sky and underwater.
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