【摘要】：構(gòu)建1.064μm脈沖激光致聲水聲通信系統(tǒng),依據(jù)激光致聲機理,研究激光脈沖能量與聲能量關(guān)系,分析水下致聲信號特征和傳輸特性,針對水下噪聲信號與致聲信號的頻譜特性,采用濾波方法從頻域進行了有效分離。通過理論分析和實驗驗證,結(jié)果表明聲波轉(zhuǎn)換能量與激光脈沖能量成正比,選擇不同的光學結(jié)構(gòu)可獲得不同的致聲能量,采用基頻可調(diào)的ASK編碼方式可實現(xiàn)數(shù)字信息的有效傳送,為海洋通信提供新的技術(shù)途徑。
[Abstract]:A 1.064 渭 m pulse laser acoustic underwater acoustic communication system is constructed. according to the mechanism of laser sound, the relationship between laser pulse energy and sound energy is studied, and the characteristics and transmission characteristics of underwater acoustic signal are analyzed. According to the spectral characteristics of underwater noise signal and acoustic signal, the filtering method is used to effectively separate the underwater noise signal from the frequency domain. Through theoretical analysis and experimental verification, the results show that the conversion energy of acoustic wave is proportional to the energy of laser pulse, different acoustic energy can be obtained by selecting different optical structures, and the effective transmission of digital information can be realized by using ASK coding method with adjustable fundamental frequency, which provides a new technical way for marine communication.
【作者單位】： 桂林電子科技大學信息與通信學院;
【基金】：國家自然科學基金(No.61077036)資助項目
【分類號】：TN929.3

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