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- Title
Detection and accurate localization of harmonic chipless tags.
- Authors
Dardari, Davide
- Abstract
We investigate the detection and localization properties of harmonic tags working at microwave frequencies. A two-tone interrogation signal and a dedicated signal processing scheme at the receiver are proposed to eliminate phase ambiguities caused by the short signal wavelength and to provide accurate distance/position estimation even in the presence of clutter and multipath. The theoretical limits on tag detection and localization accuracy are investigated starting from a concise characterization of harmonic backscattered signals. Numerical results show that accuracies in the order of centimeters are feasible within an operational range of a few meters in the RFID UHF band.
- Subjects
TAGS (Metadata); INDOOR positioning systems; DEMODULATION; MICROWAVES; SIGNAL processing; WAVELENGTHS; RADIO frequency identification systems
- Publication
EURASIP Journal on Advances in Signal Processing, 2015, Vol 2015, Issue 1, p1
- ISSN
1687-6172
- Publication type
Article
- DOI
10.1186/s13634-015-0261-7