Etude d'antennes sous-marines pour la reception de signaux electromagnetiques a tres basses frequences (3 a 30 kHz)

摘要

Tbis study deals with the problem of receiving VLF electromagneticfields with an electric underwater antenna. We show that a simple andclosed-form expres- sion for the E filed into seawater is derivedform two different models: the Surface Wave Theory and FresnelFormulas can lead to the fame physical description. Then, threeconfiguration of immersed receiving anten- nas are investigated bymeans of computer simulations (scattered electric field and expectedmeasured vol- tages) using an EFIE and the method of moments.