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V. Gikas, A. Dimitratos, H. Perakis, G. Retscher, A. Ettlinger:
"Full-scale Testing and Performance Evaluation of an Active RFID System for Positioning and Personal Mobility";
Talk: 7th International Conference Indoor Positioning and Indoor Navigation IPIN 2016, Alcalá de Henares (invited); 2016-10-04 - 2016-10-06; in: "IEEE Xplore 2016 International Conference on Indoor Positioning and Indoor Navigation (IPIN)", (2016), ISBN: 978-1-5090-2424-7; Paper ID 7743615, 8 pages.

This paper presents a series of tests and analyses undertaken to investigate the performance capabilities of an active RFID system (Freaquent®) for asset tracking and personal mobility. The RFID system was tested exhaustively considering a number of user requirements including maximum operating distance, antenna orientation, position accuracy, the influences caused by nearby objects and the operating environment. For this purpose, various positioning techniques were applied based on the lateration and fingerprinting positioning concepts. Analysis revealed that the lateration technique is sensitive to operational environment; however, as long as a representative "RSS to distance" model is established the method can deliver accuracies of the order of 0.7 m at unobstructed line-of-sight conditions. Location fingerprinting has shown that large temporal variations can occur partly which effect the radio maps of RSS distributions significantly. Thus, RSS training measurements have to performed at regular intervals to guarantee acceptable positioning accuracies on the meter-level.

Radio Frequency Identification; positioning; lateration; location fingerprinting