Abstract:
UAVs (unmanned aerial vehicles) and WSNs (wireless sensor networks) are now two well-established technologies for
monitoring, target tracking, event detection, and remote sensing. Typically, WSN is made up of thousands or even millions of tiny,
battery-operated devices that measure, gather, and send information from their surroundings to a base station or sink. Within the realm
of wireless positioning and communication, UAVs have garnered a lot of interest because of their remarkable mobility and simplistic
deployment to tackle the problems of imprecise sensor placement, inadequate infrastructure coverage, and the massive quantity of
sensing data that WSN collect. A crucial prerequisite for many position-based WSN applications is node location or localization. The
usage of UAVs for localization is more preferable than permanent terrestrial anchor nodes due to their high accuracy and minimal
implementation complexity. The possible interference or signal block in such operating environment, however, might cause the Global
Positioning System (GPS) to become ineffective or unobtainable. In these conditions, the need for innovative UAV-based sensor nodes
location technologies has become essential. Radio frequency (RF) based localization techniques is reviewed in the current paper. We
examine the available RF features for localization and look into the current approaches that work well for unmanned vehicles. The
most recent research on RF-based UAV localization is reviewed, along with potential avenues for future investigation.
