A Tag Array-Based RFID Indoor 3D Localization Method

This paper presents a 3D goniometric localization algorithm based on tag arrays. Firstly, the localization model in 3D case is analyzed. After that, the arrangement of tags is considered to reduce the coupling effect between tags to improve the localization accuracy. Finally, the direction of arrival is used to establish the localization model based on tag array, and finally the localization of the target is realized. The experimental results show that the system can realize target localization in 3D space.