| 基于Visual C和PC的软件水声调制解调系统 |
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| 引用本文： | 颜国雄,王潜,童峰.基于Visual C和PC的软件水声调制解调系统[J].海洋科学,2009,33(8):72-75. |
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| 作者姓名： | 颜国雄 王潜 童峰 |
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| 作者单位： | 厦门大学,水声通信与海洋信息技术教育部重点实验室,福建,厦门,361005 |
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| 基金项目： | 国家自然科学基金项目，福建省新世纪优秀人才支持计划项目 |
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| 摘 要： | 介绍了一种DS/DBPSK调制解调技术方案,该方案采用了具有较强抗干扰、抗衰落和抗多径性能的扩频技术,并结合与信道适应性较好、不需载波恢复的差分相位调制技术,对浅海水声信道造成的干扰进行抑制.在此方法上,基于Visual C(VC)及PC平台设计了一个通用性好的软件水声调制解调系统,利用双缓冲邋和多线程技术机制实现算法实时处理,同时可通过串口通信提供上层应用接口.实验系统验证了扩频和差分调制技术在浅海水声通信中的性能,为水声组网提供了底层支持.海试实验结果表明了系统的有效性.
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| 关 键 词： | 直接序列扩频(DSSS) 直接序列扩频/差分二相相移键控(DS/DBPSK) |
| 收稿时间： | 2008/11/3 0:00:00 |
| 修稿时间： | 2009/5/12 0:00:00 |
Software defined underwater acoustic communication system based on Visual C and PC |
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| YAN Guo-xiong,WANG Qian and TONG Feng.Software defined underwater acoustic communication system based on Visual C and PC[J].Marine Sciences,2009,33(8):72-75. |
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| Authors: | YAN Guo-xiong WANG Qian and TONG Feng |
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| Abstract: | In this paper, we present a DS/DBPSK(direct sequence spread spectrum/ differential binary phase shift keying )communication technology, which combines anti-multi-path and anti-jamming spread spectrum technology with differential phase modulation, the latter has better channel adaptation and avoid the adoption of phase recover in demodulation. Employing the double-buffer and multi-threading technology to guarantee a real-time processing, a software defined underwater acoustic modem system is designed based on Visual C++ and PC. The system is a verification experiment for DS-DBPSK technology in shallow water communication and will support underwater acoustic networks. The experimental results on sea demonstrated the effectiveness of this system. |
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| Keywords: | Visual C(VC) |
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