It is believed that the use of RF signals in seawater is not possible owing to large attenuation except LF bands. Recently, the use of RF signals in underwater communications has been viewed as one of expected solutions towards realizing various applications in seawater. In this paper, results of experiments on radio communications conducted in shallow seawater are shown.
"},{"@language":"ja","@value":"海中における電波の減衰量は非常に大きいことから，極めて低い周波数帯を除いて，実利用には適さないとされていた．しかしながら，海中における無線通信に対するニーズの多様化によって，近年，電波を利用した海中無線通信技術への期待が高まっている．著者らは，これまでに海中における電波を利用した無線通信について，浅海域における実験的な評価を行ってきた．本稿では，これまでに行った実験結果について紹介する．
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