USER LOCATION RECOGNIZATION SYSTEM BASED ON CHIRP SPREAD SPECTRUM AND METHOD THEREOF

摘要

PURPOSE: A user location recognition system based on CSS(Chirp Spread Spectrum) is provided to embody a stable location recognition using SDS-TWR(Symmetric Double Sided Two-Way Ranging) mechanism of IEEE 802.15.4a CSS method. CONSTITUTION: A passport(110) includes an ID information of a user. A wireless sensor module(200) transmits and receives distance information from the passport of a user. A gateway(300) receives user distance information of the wireless frequency sensor module. The gateway transmits received information to a connected server(400). The server displays the current position of the user through the received user distance information to a monitor.