海气信道下激光致声下行水声通信系统探讨
发布时间：2019-06-13 15:33
【摘要】：构建1.064μm脉冲激光致声水声通信系统,依据激光致声机理,研究激光脉冲能量与声能量关系,分析水下致声信号特征和传输特性,针对水下噪声信号与致声信号的频谱特性,采用滤波方法从频域进行了有效分离。通过理论分析和实验验证,结果表明声波转换能量与激光脉冲能量成正比,选择不同的光学结构可获得不同的致声能量,采用基频可调的ASK编码方式可实现数字信息的有效传送,为海洋通信提供新的技术途径。
[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.
【作者单位】： 桂林电子科技大学信息与通信学院;
【基金】：国家自然科学基金(No.61077036)资助项目
【分类号】：TN929.3
本文编号：2498616
[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.
【作者单位】： 桂林电子科技大学信息与通信学院;
【基金】：国家自然科学基金(No.61077036)资助项目
【分类号】：TN929.3
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，本文编号：2498616
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