A Novel RFID Indoor Positioning System Based on Doppler Effect

Abstract:

With the rapid growth of location-based services, indoor positioning system has attracted significant interest. Due to the long reading range and multi-tag identification capability, RFID system has the potential to estimate the accurate location of indoor objects. In this paper a novel RFID indoor positioning system is proposed based on Doppler Effect of moving RFID antenna. The system is constructed with a rotary platform, which is used to record the motion and trajectory of moving antenna. Parallel to the antenna velocity data, the Doppler frequency of RFID signal is recorded to compute the relative velocity between the antenna and target tags. By comparing the antenna movement with the relative velocity data, the position of the target is estimated using triangulation.

• Periodical: Applied Mechanics and Materials (Volumes 513-517)
• Pages: 3292-3295
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.513-517.3292
• Online since: February 2014
• Authors: Hui Chen Tong*, Dong Wang
• Keywords: Doppler Effect, Indoor Positioning, RFID System

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