An effectual direct position determination approach for enhancing the accuracy of the indoor positioning system

Abstract

In this paper, an efficient direct position determination approach, which is based on the combination model using the Kalman filter, has been proposed. The proposed approach enables accurately estimating the emitter position in various scenarios. Two scenarios have been created to evaluate the performance of the approach in the case exist line of sight (LOS) paths and do not exist a line of sight paths (NLOS) on the way movement of the emitter in the indoor environment. The simulation outcomes show that the proposed approach achieves more accuracy compared to angle-of-arrival (AOA), Direct Position Determination (DPD), and Direct Source Localization (DiSouL) techniques in the same scenario. In particular, when the probability of errors was less than 1m and the environment has not existed with LOS paths, the proposed approach has achieved accuracy is about 60% compared to 1%, 35%, and 45% of AOA, DiSoul, and DPD, respectively.