An experimental study of acoustic distributed beamforming using round-trip carrier synchronization

2010 IEEE International Symposium on Phased Array Systems and Technology Pub Date : 2010-10-28 DOI:10.1109/ARRAY.2010.5613352

D. Brown, Boyang Zhang, Boris Svirchuk, Min-sheng Ni

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引用次数: 25

Abstract

This paper describes the development of an acoustic distributed beamforming system and presents experimental results for two-source and three-source acoustic distributed beam-forming using the time-slotted round-trip carrier synchronization protocol. Each source node in the system was built using commercial off-the-shelf parts including a Texas Instruments floating-point digital signal processor, microphone, speaker, audio amplifier, and battery. The source node functionality, including phase locked loops and the logic associated with the time-slotted round-trip carrier synchronization protocol, was realized through real-time software independently running on each source node's C6713 digital signal processor. Experimental results for two-source and three-source realizations of the acoustic distributed beamforming system in a room with multipath channels are presented. The two-source and three-source experimental results show mean power gains of approximately 97.7% and 90.7%, respectively, of an ideal beamformer.

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基于双向载波同步的声学分布式波束形成实验研究

本文介绍了一种声学分布式波束形成系统的研制，并给出了利用时隙往返载波同步协议实现双源和三源声学分布式波束形成的实验结果。系统中的每个源节点都使用商用现成部件构建，包括德州仪器浮点数字信号处理器、麦克风、扬声器、音频放大器和电池。源节点功能，包括锁相环和时隙往返载波同步协议相关的逻辑，通过独立运行在每个源节点的C6713数字信号处理器上的实时软件实现。给出了在多径信道室内实现双源和三源声分布式波束形成系统的实验结果。双源和三源实验结果表明，理想波束形成器的平均功率增益分别约为97.7%和90.7%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2010 IEEE International Symposium on Phased Array Systems and Technology

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