UNDERWATER COMMUNICATION SYSTEM

To provide an underwater communication system that is also suitable for POC and can accurately calculate correlation.SOLUTION: An underwater acoustic communication system 10 according to the present invention includes: a reference signal generator 11 that generates a reference signal; a data transmission unit 12 that digitally modulates the reference signal generated by the reference signal generator 11 into an ultrasonic signal containing data and transmits the ultrasonic signal underwater; a data reception unit 13 that receives the ultrasonic signal transmitted by the data transmission unit 12; an equalizer unit 14 that corrects the reference signal; and a correlation calculator 15 that calculates correlation between the ultrasonic signal received by the data reception unit 13 and the reference signal corrected by the equalizer unit 14.SELECTED DRAWING: Figure 1 【課題】 ＰＯＣにも好適で相関を正確性高く計算することができる水中通信システムを提供する。【解決手段】 本発明に係る水中音響通信システム１０は、基準信号を発生する基準信号発生器１１と、基準信号発生器１１が発生した基準信号をデジタル変調してデータを含む超音波信号に変換し、水中に送信するデータ送信部１２と、データ送信部１２が送信した超音波信号を受信するデータ受信部１３と、基準信号を補正するイコライザー部１４と、データ受信部１３が受信した超音波信号とイコライザー部１４が補正した基準信号との相関を計算する相関計算器１５とを備える。【選択図】 図１