Winfrared: An Infrared-Like Rapid Passive Device-Free Tracking with Wi-Fi

Accurate and fast target tracking is the basis of many intelligent applications and is therefore widely discussed and researched. The existing methods have many disadvantages, such as dead zone, high costs, and long delays. Combining the advantages of many methods, we propose an infrared-like rapid passive target tracking method with Wi-Fi. By analyzing and utilizing the feature of the Line of Sight and channel state information, we build a net that can track the moving target with a small number of transceivers. The evaluation result shows that our method can achieve rapid target tracking with low overhead.