Guessing the coordinates of targets in indoor environments using hyperbolic technique

Abstract

The difficulty of implementing a localization system in an indoor environment has been exacerbated by multipath and interference issues. In this area, the most essential techniques for establishing such parameters are Time of Arrival (ToA) and Receive Signal Strength (RSS). Both of which should be enhanced, especially for extra interference caused by large multipath problems. The suggested techniques of this analysis are implemented in this article via the use of a case study of a chosen structure. The Hyperbolic method is used in this proposal to estimate the location of chosen targets.TheWireless InSite (WI) software was used to simulate the case study area, with thirty Receivers (RXs) and two Transmitters (TXs) placed in strategic locations. After recording the RSS and ToA values, it will be stored as a database. Such database is indicated as a relation carves using MATLAB package. The results indicate that the estimated locations are reasonably close to the actual locations, with an average error of (0.498349) m for the X-coordinate and (1.151832) m for the Y-coordinate based on RSS. Such a result came from distance error of (0.453345667) m and (0.484111) m for TX1 and TX2, respectively. On the other hand, based on ToA, the average error is (0.551781) m for the X-coordinate and (0.968433) m for the Y-coordinate with the distance error are (0.36676) m, and (0.4011592) m for TX1 and TX2, respectively. As a consequence, we confirm that the ToA approach is more effective in assessing indoor localization than the RSS method in the hyperbolic method.