Transmit beamforming for Angle-of-Activation (AoAct) estimation in passive UHF RFID systems

Cremer, Markus; Pervez, Anjum; Dettmar, Uwe; Hudasch, Carsten; Knie, Thomas; Kronberger, Rainer; Lerche, Robin

doi:10.1109/rfid-ta.2015.7379790

Cited by 2 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, regardless of the single tag or the multi tags cases, EPATL achieves a remarkable accuracy increase when comparing to PATL. At the same time, compared to otherexisting method of LANDMARC 11 and AoAct 16 , EPATL also has obvious advantages in terms of accuracy. We also investigate the algorithm execution time of PATL and EPATL for both single tag and multi tag situation, excluding the time consumption of tag reading measurements.…”

Section: Experiments Analysismentioning

confidence: 99%

“… 15 which was used for locating one tag in dynamic environment, our method is mainly applied to locate tags in the region where lots of static tags need to be inventoried. Additionally, by comparing to refs 16 , 17 , 18 , our method can locate several tags at the same time since we use two-dimensional phased array antenna. The two-dimensional phased array antenna provides our method with a better scanning scope.…”

mentioning

confidence: 96%

“…Ref. 16 introduced a linear array antenna composed of 8 monopole antenna units which can scan the environment with specific direction from 45 to 135 degree. Further refs 17 and 18 deployed multiple phased array antennas at different locations in the environment.…”

mentioning

confidence: 99%

See 2 more Smart Citations

PATL: A RFID Tag Localization based on Phased Array Antenna

Qiu

Liang

Huang

2017

Sci Rep

View full text Add to dashboard Cite

In RFID systems, how to detect the position precisely is an important and challenging research topic. In this paper, we propose a range-free 2D tag localization method based on phased array antenna, called PATL. This method takes advantage of the adjustable radiation angle of the phased array antenna to scan the surveillance region in turns. By using the statistics of the tags’ number in different antenna beam directions, a weighting algorithm is used to calculate the position of the tag. This method can be applied to real-time location of multiple targets without usage of any reference tags or additional readers. Additionally, we present an optimized weighting method based on RSSI to increase the locating accuracy. We use a Commercial Off-the-Shelf (COTS) UHF RFID reader which is integrated with a phased array antenna to evaluate our method. The experiment results from an indoor office environment demonstrate the average distance error of PATL is about 21 cm and the optimized approach achieves an accuracy of 13 cm. This novel 2D localization scheme is a simple, yet promising, solution that is especially applicable to the smart shelf visualized management in storage or retail area.

show abstract

Section: Experiments Analysismentioning

confidence: 99%

mentioning

confidence: 96%