Exploiting Ultra-Wideband Channel Impulse Responses for Device-Free Localization.

ABSTRACT: In radio-frequency (RF)-based device-free localization (DFL), the number of sensors acting as RF transmitters and receivers is crucial for accuracy and system costs. Two promising approaches for DFL have been identified in the past: radio tomographic imaging (RTI) and multi-static radar (MSR). RTI in its basic version requires many sensors for high accuracy, which increases the cost. In this paper, we show how RTI benefits from multipath propagation. By evaluating the direct and echo paths, we increase the coverage of the target area, and by utilizing UWB signals, the RTI system is less susceptible to multipath propagation. MSR maps reflections that occur within the target area to reflectors such as persons or other objects. MSR does not require that the person is located near a signal pat

SUBMITTER: Cimdins M 

PROVIDER: S-EPMC9416598 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature