| 基于分数阶Fourier变换的远程水声通信技术研究 |
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| 引用本文： | 陈韵,王逸林,蔡平,殷敬伟,梅继丹.基于分数阶Fourier变换的远程水声通信技术研究[J].兵工学报,2011,32(9):1159-1164. |
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| 作者姓名： | 陈韵 王逸林 蔡平 殷敬伟 梅继丹 |
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| 作者单位： | (哈尔滨工程大学 水声技术重点实验室, 黑龙江 哈尔滨 150001) |
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| 基金项目： | 国家自然科学基金资助项目(60802060); 教育部高等学校博士点基金资助项目(200802171061); 水声技术重点实验室基金资助项目(9140C20080211OC20) |
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| 摘 要： | 针对水声通信中所采用的窄带信号传输距离近和抗干扰能力不足的问题,提出一种采用线性调频( LFM)作为载波信号,采用分数阶Fourier变换作为解码方式的水声通信方案.该方案采用在时域进行LFM信号的码元分割,在分数阶变换域借用脉冲位置调制(PPM)进行解码的方法进行通信,并通过Rake接收机进行路径分集接收抑制水声信道...
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| 关 键 词： | 通信技术 水声通信 分数阶Fourier变换 脉冲位置调制 Rake接收机 |
Research on Long Range Underwater Acoustic Communication Technology Based on Fractional Fourier Transform |
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| CHEN Yun,WANG Yi-lin,CAI Ping,YIN Jing-wei,MEI Ji-dan.Research on Long Range Underwater Acoustic Communication Technology Based on Fractional Fourier Transform[J].Acta Armamentarii,2011,32(9):1159-1164. |
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| Authors: | CHEN Yun WANG Yi-lin CAI Ping YIN Jing-wei MEI Ji-dan |
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| Affiliation: | (Science and Technology on Underwater Acoustic Laboratory, Harbin Engineering University, Harbin 150001，Heilongjiang, China) |
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| Abstract: | Aimed at short propagation distance and poor anti-jamming capability of narrow-band signal in underwater acoustic(UWA) communication,a new UWA communication scheme is proposed on the basis of fractional Fourier transform which used LFM signals as carrier signals.LFM signals are divided into groups as coding signals in time domain and the coding signals are decoded by using pulse position modulation(PPM) in fractional domain.A Rake receiver is presented to suppress UWA channel's multi-path effect which could... |
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| Keywords: | communication technique underwater acoustic communication fractional Fourier transform pulse position modulation Rake receiver |
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