## THERMAL SCIENCE

International Scientific Journal

### DETERMINATION OF POSITIONING ACCURACIES BY USING FINGERPRINT LOCALISATION AND ARTIFICIAL NEURAL NETWORKS

**ABSTRACT**

Fingerprint localization technique is an effective positioning technique to determine the object locations by using radio signal strength (RSSI), values in indoors. The technique is subject to big positioning errors due to challenging environmental conditions. In this paper, initially, a fingerprint localization technique is deployed by using classical k-NN method to determine the unknown object locations. Additionally, several artificial neural networks, (ANN), are employed, using fingerprint data, such as SFFNN, MFFNN, MBPNN, GRNN and DNN to determine the same unknown object locations. Fingerprint database is built by RSSI measurement signatures across the grid locations. The construction and the adapted approach of different neural networks using the fingerprint data are described. The results of them are compared with the classical k-NN method and it was found that DNN was the best neural network technique providing the maximum positioning accuracies.

**KEYWORDS**

PAPER SUBMITTED: 2018-09-12

PAPER REVISED: 2018-10-30

PAPER ACCEPTED: 2018-11-16

PUBLISHED ONLINE: 2018-12-16

**THERMAL SCIENCE** YEAR

**2019**, VOLUME

**23**, ISSUE

**Supplement 1**, PAGES [S99 - S111]

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