Abstract: An apparatus for detecting an object may include: a transmitter configured to emit a frequency-modulated ultrasonic signal toward the object; a receiver configured to receive an echo signal from the object in response to the frequency-modulated ultrasonic signal being reflected from the object; a mixer configured to mix the frequency-modulated ultrasonic signal with the echo signal to output a mixer signal; and one or more processors configured to estimate a distance from the apparatus to the object based on the mixer signal, and detect a characteristic of the object based on the estimated distance.

Abstract: A method of measuring a velocity vector of a target object is provided. The method includes: obtaining pieces of radar data obtained by detecting the target object; based on the pieces of radar data, extracting velocity vectors for respective points that correspond to the detected target object; and calculating the velocity vector of the target object based on the velocity vectors.

Abstract: An ultrasonic distance sensor is provided. The ultrasonic distance sensor according to an embodiment includes: a signal generator configured to generate a frequency-modulated continuous ultrasonic signal array; a gating switch configured to perform time gating to allow part of ultrasonic signals in the continuous ultrasonic signal array to pass therethrough; a transmitter configured to emit ultrasonic signals, having passed through the gating switch, toward an object; a receiver configured to receive an echo signal reflected from the object; and a signal processor configured to measure a location of the object by using the echo signal.

Abstract: Disclosed is a method and apparatus for processing a radar signal by correcting a phase distortion. The method includes generating radar data based on a radar transmission signal transmitted through an array antenna of a radar sensor based on a frequency modulation model and a radar reception signal received through the array antenna as the radar transmission signal is reflected by a target, correcting the radar data using a correction vector for correcting a feedline error occurring due to a feedline delay difference between channels of the array antenna, and estimating a direction of arrival corresponding to the corrected radar data using a direction matrix reflecting a phase shift of the corrected radar data according to frequency modulation characteristics of the frequency modulation model.

Abstract: A processor-implemented method includes receiving at least one information comprising either one or both of control information of a vehicle and environment information of the vehicle; determining a driving situation of the vehicle, based on the at least one information; changing control parameters for changing a waveform of radar sensors of a sensing system, based on the determined driving situation of the vehicle, wherein the control parameters comprise an operation mode comprising a chirp mode of the radar sensors and comprise sensor parameters of the radar sensors; and transmitting the changed control parameters to the sensing system in real time.

Abstract: Disclosed is a method and apparatus for processing a radar signal by correcting a phase distortion. The method includes generating radar data based on a radar transmission signal transmitted through an array antenna of a radar sensor based on a frequency modulation model and a radar reception signal received through the array antenna as the radar transmission signal is reflected by a target, correcting the radar data using a correction vector for correcting a feedline error occurring due to a feedline delay difference between channels of the array antenna, and estimating a direction of arrival corresponding to the corrected radar data using a direction matrix reflecting a phase shift of the corrected radar data according to frequency modulation characteristics of the frequency modulation model.

Abstract: A processor implement method may include determining a target azimuth angle of the target object based on an initial radar signal received through an array antenna of a radar sensor, generating a correction radar signal by correcting a phase of the initial radar signal based on the target azimuth angle, and determining an elevation angle of the target object based on the correction radar signal.

Abstract: Disclosed is a method and apparatus for processing a radar signal by correcting a phase distortion. The method includes generating radar data based on a radar transmission signal transmitted through an array antenna of a radar sensor based on a frequency modulation model and a radar reception signal received through the array antenna as the radar transmission signal is reflected by a target, correcting the radar data using a correction vector for correcting a feedline error occurring due to a feedline delay difference between channels of the array antenna, and estimating a direction of arrival corresponding to the corrected radar data using a direction matrix reflecting a phase shift of the corrected radar data according to frequency modulation characteristics of the frequency modulation model.

Abstract: Disclosed is a sign apparatus for displaying a sign for traffic or a vehicle, where the sign apparatus includes a display configured to display the sign and to permit a radar signal radiated from a source to pass, a filter configured to attenuate a signal of at least one frequency in the radar signal passing through the display and to allow a signal of a remaining frequency to pass, and a reflector configured to reflect the signal passing through the filter, wherein the reflected signal includes encoded identification information of the sign.

Abstract: A method including clustering second point clouds comprised in second point cloud data of a second timepoint, obtaining output data corresponding to one or more second clusters generated as a result of the clustering by applying the second point clouds to a pretrained neural network, determining whether at least one of the one or more second clusters is a target object based on a reliability factor, tracking first clusters corresponding to the target object in first point cloud data of one or more first timepoints prior to the second timepoint, and training of the pretrained neural network based on the output data corresponding to the first clusters and the first point clouds for each first cluster determined according to a result of the tracking.

Abstract: A method of predicting a movement of a cut-in object, including separating a Doppler velocity corresponding to at least one wheel of the cut-in object from radar data based on a velocity of the cut-in object, determining a position of the at least one wheel of the cut-in object based on the Doppler velocity, generating at least one of first movement information related to a horizontal movement of the cut-in object or second movement information related to a moving direction of the cut-in object based on the position of the at least one wheel, and determining a position of the cut-in object based on at least one of the first movement information or the second movement information.

Abstract: A method and device for object recognition for information collected from a sensor of a moving object are disclosed. The method may include identifying a target with a confidence level of recognition accuracy less than a threshold, based on first sensing information collected from a moving object, obtaining second sensing information on the target from an interworking moving object, synchronizing the first sensing information and the second sensing information based on time information included in the first sensing information and time information included in the second sensing information, and training a neural network for estimating recognition information of the target from the first synchronized sensing information by using information on the target included in the second synchronized sensing information as ground truth data.

Abstract: A method includes extracting a first chirp sequence signal and a second chirp sequence signal from a radar signal, determining a first phase difference of the first chirp sequence signal based on a distance between antenna elements of the array antenna, determining a second phase difference of the second chirp sequence signal based on the distance between the antenna elements of the array antenna, determining a first direction of arrival (DOA) frequency based on a first carrier frequency based on the first phase difference, determining a second DOA frequency based on a second carrier frequency based on the second phase difference, estimating a preliminary DOA of a target based on a frequency difference between the first DOA frequency and the second DOA frequency, determining ambiguous DOA candidates, and selecting a final DOA of the target from the ambiguous DOA candidates based on the preliminary DOA.

Abstract: A processor-implemented vehicle controlling method includes: determining whether an object in a vehicle is a living object based on radio detection and ranging (radar) information received from a radar sensor; in response to a determination that the object is a living object, determining bioinformation of the object based on the radar information; and adjusting a temperature in the vehicle based on the bioinformation and temperature information received from a temperature sensor.

Abstract: An object velocity detection method includes: obtaining a first reception signal and a second reception signal that are received in different time intervals through a radar sensor; determining a Doppler effect based on the first reception signal and the second reception signal; determining an angle value of an object based on a signal obtained by compensating for the Doppler effect; obtaining a compensated signal by compensating for the angle value in the second reception signal; and determining a velocity of the object based on the compensated signal.

Abstract: A processor-implemented vehicle controlling method includes: determining whether an object in a vehicle is a living object based on radio detection and ranging (radar) information received from a radar sensor; in response to a determination that the object is a living object, determining bioinformation of the object based on the radar information; and adjusting a temperature in the vehicle based on the bioinformation and temperature information received from a temperature sensor.

Abstract: A processor-implemented vehicle controlling method includes: determining whether an object in a vehicle is a living object based on radio detection and ranging (radar) information received from a radar sensor; in response to a determination that the object is a living object, determining bioinformation of the object based on the radar information; and adjusting a temperature in the vehicle based on the bioinformation and temperature information received from a temperature sensor.

Abstract: Disclosed is a method and apparatus for processing a radar signal by correcting a phase distortion. The method includes generating radar data based on a radar transmission signal transmitted through an array antenna of a radar sensor based on a frequency modulation model and a radar reception signal received through the array antenna as the radar transmission signal is reflected by a target, correcting the radar data using a correction vector for correcting a feedline error occurring due to a feedline delay difference between channels of the array antenna, and estimating a direction of arrival corresponding to the corrected radar data using a direction matrix reflecting a phase shift of the corrected radar data according to frequency modulation characteristics of the frequency modulation model.

Abstract: A processor-implemented vehicle controlling method includes: determining whether an object in a vehicle is a living object based on radio detection and ranging (radar) information received from a radar sensor; in response to a determination that the object is a living object, determining bioinformation of the object based on the radar information; and adjusting a temperature in the vehicle based on the bioinformation and temperature information received from a temperature sensor.

Abstract: An object velocity detection method includes: obtaining a first reception signal and a second reception signal that are received in different time intervals through a radar sensor; determining a Doppler effect based on the first reception signal and the second reception signal; determining an angle value of an object based on a signal obtained by compensating for the Doppler effect; obtaining a compensated signal by compensating for the angle value in the second reception signal; and determining a velocity of the object based on the compensated signal.