Location-Aware Algorithm and Performance Analysis of Multiple Intelligent Nodes Based on SDN Architecture

摘要

Acoustic positioning is a very useful tool in monitoring and tracking applications. It has a wide range of application scenarios in intelligent life perception in the future. The acoustic positioning of single node microphone array has been widely used in speech enhancement and other fields, but the coverage of this positioning method is limited, which cannot meet the requirements of large-scale acoustic detection. Therefore, this paper adopts a multi node distributed acoustic positioning system based on SDN architecture. The nodes are synchronized by the improved IEEE1588 precise clock protocol. The TDOA between nodes is calculated by the generalized cross correlation algorithm, and the spatial positioning of target acoustics is realized by the linear correction least square estimation method proposed in this paper.