HYBRID TOA/RSS ALGORITHM FOR INDOOR LOCALIZATION

Abstract

The indoor localization, in general, suffers from several challenges,
such as the reflection of signal, diffraction, and attenuation. With
these problems, the error range is increased significantly and the
accuracy will be reduced. To address those problems, a hybrid
localization algorithm was proposed in this paper which aims to get
the localization and estimation of several received points within the
selected study area. Such algorithm was based on the use of Time of
Arrival (ToA) and Received Signal Strength (RSS), which have been
calculated via Wireless InSite (WI) software. The proposed algorithm
works based on the Gaussian Newton algorithm (GNA). The results
obtained showed higher accuracy in indoor environment localization,
and accurate results for the coordination estimation and the
separation distances between the AP's and Rx points.