Abstract: Disclosed are an apparatus for authenticating a user in a user terminal and a method thereof. The method according to the present disclosure includes a step of providing a guide for inducing a user motion, a step of emitting a radar signal and generating a reference signal based on a reflected signal generated by a user motion, a step of generating a plurality of additional signals based on the characteristic values of the reference signal, and generating a plurality of additional samples self-duplicated by combining the additional signals with the reference signal, a step of outputting a guide for inducing a user motion for user authentication upon determining that user authentication is required, a step of recognizing a user motion based on the radar signal, and a step of performing user authentication based on the recognized user motion.

Abstract: Disclosed is a radar-based human motion recognition apparatus including a first radar for emitting a first radar signal for detecting a position of an object, a second radar for emitting a second radar signal for gesture recognition, an antenna for receiving a first reflected signal reflected from the object by the first radar signal and a second reflected signal reflected from the object by the second radar signal, and a controller for determining situation information based on second signal processing for the second reflected signal.