Principles and Techniques of RFID Positioning

Abstract

Radio frequency identification (RFID) systems, which basically consist of readers and tags, were originally developed for the identification of tagged objects, as the name RFID implies. Recently, precise positioning and tracking of RFID tags or readers has received considerable attention from both academia and industry. For example, finding the position of RFID tags is an important task in various real-time locating systems (RTLS) to locate and track products, assets, and personnel with attached RFID tags in an area covered by the RFID readers (e.g., (BY03, SPF04, NLL04, TFD06, TS06, ZAK07, AAM07, OAC08, Con08, Amir09)). In other applications, it is desirable for a reader to identify its own position with the assistance of reference tags (e.g., (CJJ04, HBF04, XG06, KPN06, ZLH07, SVZ07, WWT07, DB08, SMI08)). Numerous RFID localization products have been developed for various applications. RFID positioning techniques and applications have been surveyed in (Mill06, BMG07, BS08, ZS08, SK08).

RFID and Augmented Reality

“…It can be hidden under paint or directly embedded into the plastic product such as its integral part and become undetectable for the human eye. This application is suitable in the case where the classical method of identifying is disturbing the aesthetic impression of the product, such as luxury goods [12].…”

Localizing with Passive UHF RFID Tags Using Wideband Signals

“…The survey includes systems using RSS values, ToA and TDoA measurements, phase-based measurements as well as fingerprinting methods. Further surveys are provided in [22,23,24].…”

Reducing the phase cancellation effect in augmented RFID system

“…RFID-based localization and tracking solutions have attracted much attention from academia and industry. The majority of state-of-the-art RFID localization methods are based on the fusion of multiple pieces of relevant information, which are either direction of arrival (AOA), time of arrival (TOA), time difference of arrival (TDOA), received signal strength (RSS) or certain other propagation characteristic obtained by single or multiple antenna positions [17]. However, due to the dynamic indoor wireless environment and multipath distortion, the overall accuracy of these methods is detection, in which signals from two antennas are converted into baseband and then compared with digital domain.…”