Investigation of the Sensitivity of Time Based Methods to Noise in Terrestrial Localization with Normal and Abnormal Distribution

Today, the researchers are interested to radio frequency based localization methods such as Time Of Arrival (TOA), Time Difference Of Arrival (TDOA), Angle Of Arrival (AOA), Received Signal Strength Indication (RSSI) and their combinations. In sensor networks such as the base station cellular network, time-based methods for positioning are used. For security purposes, standards have been written in order to improve the accuracy of positioning in mobile networks. One of the factors influencing positioning accuracy is the placement of the localizer receivers. In this paper, a solution to improve the accuracy of the positioning is suggested by comparing the two principal methods based on time, i.e., the time of arrival of the signal and the time difference of the signal arrival, and the separation of the noise quantity into two normal and abnormal parts. In fact, by examining the abnormal noise and calculating this amount at the desired area for positioning, the appropriate method for positioning in the sub-sections is determined and the positioning is achieved.