| 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: Visual C(VC) 直接序列扩频（DSSS） 直接序列扩频/差分二相相移健控（DS/DBPSK） |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目（10704063）；福建省新世纪优秀人才支持计划项目 |
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| Software defined underwater acoustic communication system based on Visual C and PC |
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YAN Guo-xiong,WANG Qian,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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| Key words: Visual C(VC) direct sequence spread spectrum(DSSS) direct sequence spread spectrum/differential binary phase shift keying(DS/DBPSK) |
