WSNs中节点协同声源定位协议研究

摘要

声源定位是无线传感器网络重要的应用领域之一。由于实际环境中的声源大部分是运动的，因此设计一种快速准确的声源定位协议是关键。该文研究了一种多传感器节点协同的声源定位协议，完整考虑了节点处理声音和射频信号的响应时间，分析了它们对该声源定位协议定位精度的影响，推导出声源定位边界性条件。实验结果表明该协议相对现有的精确声源定位方法具有分布式可实现、实时性好、资源占用少等优点，适用于复杂场景中的动态声源定位。%Acoustic source localization is an important application in wireless sensor networks. Because most of sound sources are moving in surveillance field, it is a key problem to design a fast and accurate acoustic source localization protocol. This paper presents an acoustic source localization protocol based on multi-sensor collaboration, takes into account the responsing time of sound and RF signals processing for sensors, analyzes the influence to localization accuracy of the protocol, and obtains the boundary conditions for the proposed protocol. Experiment results show that the protocol can be realized in distributed manner, real-time, occuping little hardware resource, so that it is suitable for dynamic acoustic source localization in complicated scene.