QQ客服 官方微博 反馈留言

题名	水声非相干通信系统的设计
作者	姜燕北
学位类别	博士
答辩日期	2005
授予单位	中国科学院声学研究所
授予地点	中国科学院声学研究所
关键词	非相干 空间分集 链路口 并行处理
中文摘要	本文的目标是设计一个实时的非相干水声通信系统，并在SHARC 21160 DSP处理系统中实现，最后通过试验对其进行了检验．、首先，本文运用Haclomard编解码、非相干调制解调、帧同步、多普勒频移检测与补偿、Hadomord的软判决以及空间分集等多种通信技术，设计了水声非相干通信系统，对其进行了仿真，并对系统性能进行了分析。为了实现多ADSP 21160 DSP并行处理时DSP之间的高速数据通信，本文利用ADSP 21160的半双工链路口设计了链路双向通信协议。经过多次试验的检验，链路通信系统的稳定性和可靠性完全满足非相干和相干通信系统的需要。在此基础上，设计了非相干通信在多片DSP上并行处理的实现方案。经过两次湖试，非相干水声通信系统得到了验证和完善。刘湖试采集的大量数据的分析，验证了整套非相干通信系统的可行性。另外分析了温度梯度、空间分集、信噪比、多途等因素对于非相干通信的影响。
英文摘要	A real-time incoherent underwater acoustic communication system based on multiple Share 21160 DSP system was designed. Lake tests were carried out and data is analyzed. Many communication techniques, such as Hadamard code and decode, incoherent modulation and demodulation, frame synchronization, Doppler frequency shift detection and compensation, soft verdict, space diversity etc., were applied to design the incoherent underwater acoustic communication system and. The system was tested under simulated conditions and its performance was analyzed. To realize high-speed communication among multiple ADSP21160 DSPs during parallel processing, a bi-directional communication protocol is designed based on Half-duplex LINK port. The protocol is proved to be stable and reliable in many tests and can fully satisfy the requirements of both coherent and incoherent acoustic communication system. Based on the successful protocol, the multiple DSP structure was defined and parallel algorithm was designed. The designed incoherent acoustic communication system was tested twice in a lake. The results show that the system works correctly. The affection of temperature profile, space diversity, SNR, multi-path are analyzed.
语种	中文
公开日期	2011-05-07
页码	61
内容类型	学位论文
源URL	[http://159.226.59.140/handle/311008/966]
专题	声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文
推荐引用方式 GB/T 7714	姜燕北. 水声非相干通信系统的设计[D]. 中国科学院声学研究所. 中国科学院声学研究所. 2005.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。