A New Feature for Localization in Wireless Networks: Differential RSS Quotient

In this study, a new feature namely Differential RSS Quotient (QRD) is introduced for localization of radio frequency emitters via received signal strength (RSS) measurements in wireless networks. In the previous literature, differential RSS (DRSS) has been developed to remove the unknown transmit power. The new feature namely QRD is obtained by taking the ratio of two different DRSS values. QRD removes both the unknown transmit power and the unknown path loss exponent, and reduces the number of the dimensions of the search space of the estimation. It is shown that the new method is an effective algorithm for the challenging conditions where the number of sensors is quite small. Finally, a sample application for QRD based localization i.e. localization by Unmanned Aerial Vehicles (UAV) is demonstrated in this study.