Based On RFID Reader And Tag 3D Indoor Location Algorithm

In recent years, with the rapid development of RFID technology, RFID technology in the field of research has flourished, the use of RFID technology for indoor positioning is one of the research fields. Positioning technology based on the application of geographic scope, divided into outdoor and indoor positioning technology positioning technology. Because indoor location positioning itself small area, multipath propagation serious, prone positioning and changes in the characteristics of the environment, so for outdoor positioning technology can apply. RFID indoor positioning technology, has a very distinct advantage. This paper studies the RFID-based 3D indoor algorithms and applications aimed at a pre-defined coordinate system to locate an object in three-dimensional space by using RFID tags and readers.。This paper presents two positioning scheme, active and passive localization program, the former aimed at positioning RFID reader, which is positioned RFID tags. Both programs are based Nelder-Mead nonlinear optimization approach minimizes error objective function. Then raised another reader based algorithm--De B algorithm, which is decided by a 3D sphere iteratively to best cover the active reference label. The experimental results show that the accuracy of these two programs to target are acceptable. Active programs are usually less errors, and lower hardware costs. And a higher positioning accuracy De B algorithm positioning time is shorter. And EDe B algorithm is improved De B algorithm when the target body at the border or at the corner hexahedron. By Alien RFID device to verify the validity of the proposed method.We also gave a description about which the RFID location system applied on the management of parking places and added the function of path planning to the park management system, making systems more commercial value.