Abstract: An electronic device includes a transmission antenna, a reception antenna, and a controller. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. The controller detects an object that reflects the transmission wave, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller classifies a predetermined target, based on a probability density distribution calculated from a relative velocity of the object relative to the electronic device.

Abstract: An electronic device includes a controller. The controller detects an object, based on a transmission signal transmitted as a transmission wave and a reception signal received as a reflected wave that is the transmission wave having been reflected off the object. The controller detects the object, based on a correlation between a first signal intensity of a first signal and a second signal intensity of a second signal. The first signal intensity corresponds to a distance of the object from the electronic device. The first signal is calculated based on a first transmission signal transmitted at a first time and a first reception signal received as the reflected wave of the first transmission signal. The second signal intensity corresponds to the distance of the object from the electronic device.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a signal processor. The transmission antenna is configured to transmit a transmission wave. The reception antenna is configured to receive a reflection wave resulting from reflection of the transmission wave. The signal processor is configured to detect an object based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave. The signal processor classifies a point group representing the object in accordance with a prescribed parameter when performing clustering on detection results of the object.

Abstract: Provided are an object tracking device and an object tracking method that allow multiple objects to be tracked with high accuracy. An object tracking device (20) includes an input interface (21), a processor (23), and an output interface (24). The input interface (21) is configured to acquire sensor data. The processor (23) is configured to detect multiple detection targets from the sensor data and perform tracking using a Kalman filter for each of the multiple detection targets. The output interface (24) is configured to output detection results of the detection targets. The processor (23) allows overlapping of detection results during the process of tracking the multiple detection targets.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a controller. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. The controller detects a heartbeat of a subject that reflects the transmission wave, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller forms a beam of the transmission wave in a direction of the subject to detect a heartbeat of the subject.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a signal processor. The transmission antenna is configured to transmit a transmission wave. The reception antenna is configured to receive a reception wave resulting from reflection of the transmission wave. The signal processor is configured to detect an object, with a constant false alarm rate, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave, The signal processor selects, based on a maximum likelihood estimated value that gives a false alarm rate of signal intensity based on the reception signal, a reference cell disposed in a distance direction with respect to an inspection cell in a two-dimensional distribution of signal intensity, based on the reception signal, in the distance direction and a relative velocity direction.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a controller. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. The controller detects an object that reflects the transmission wave, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller generates, based on reference data, a group from multiple pieces of detected data generated based on the detection of the object, and generates representative data based on one or more pieces of detected data included in the group.

Abstract: Provided are an object tracking device and an object tracking method that allow multiple objects to be tracked with high accuracy. An object tracking device (20) includes an input interface (21), a processor (23), and an output interface (24). The input interface (21) is configured to acquire sensor data. The processor (23) is configured to detect multiple detection targets from the sensor data and perform tracking using a Kalman filter for each of the multiple detection targets. The output interface (24) is configured to output detection results of the detection targets. The processor (23) groups a plurality of the Kalman filters and determines whether or not each of the Kalman filters corresponds to an identical object.

Abstract: An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave, which is the reflected transmission wave, a controller that controls a radiation pattern of the transmission wave, a signal processor that detects an object on the basis of a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller performs control such that, when the transmission wave is transmitted a plurality of times in certain units, a transmission wave with a varied radiation pattern is included at least once. The signal processor outputs a result of the detection of the object on the basis of selected clusters that are, among a plurality of clusters obtained by performing clustering on results of detection performed on the object the plurality of times, clusters other than a cluster with a most distant representative point.

Abstract: An electronic device includes a transmission antenna that transmits a transmission wave, a plurality of reception antennas that receive a reflected wave that is the transmission wave having been reflected, and a signal processing unit that detects an object with a subspace method, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The signal processing unit estimates a direction of arrival of the reflected wave, based on solutions of an algebraic equation Root-MUSIC Polynomial (hereinafter referred to as “RMP solutions”) in a Root-MUSIC method that satisfy a first requirement and a second requirement in terms of positions of the RMP solutions in a complex plane. The first requirement is a requirement related to a distance between a unit circle and each of the RMP solutions in the complex plane.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a controller. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. The controller detects a target by using a constant false alarm rate, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller detects an object by using the constant false alarm rate, based on a signal intensity of a complex signal corresponding to a distance of an object whose relative velocity with respect to the electronic device is zero.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a signal processor. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. Based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave, the signal processor detects oscillations arising from a heartbeat of a subject that reflects the transmission wave. Based on oscillation velocity obtained through oscillation component removal except for an oscillation component lying at a desired position from a result of performing a fast Fourier transform in a range direction and a velocity direction on the reception signal, the signal processor calculates the heartbeat of the subject.

Abstract: An electronic device includes a transmission antenna, a reception antenna, and a signal processor. The transmission antenna is configured to transmit a transmission wave. The reception antenna is configured to receive a reflection wave resulting from reflection of the transmission wave. The signal processor is configured to detect an object based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave. The signal processor is configured to output information regarding a point group representing the position of an object determined to be a stationary object based on the velocity of the object and the velocity of the electronic device.

Abstract: An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave, which is the reflected transmission wave, a controller that controls a radiation pattern of the transmission wave, a signal processor that detects an object on the basis of a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller performs control such that, when the transmission wave is transmitted a plurality of times in certain units, a transmission wave with a varied radiation pattern is included at least once. The signal processor outputs a result of the detection of the object on a basis of, among a plurality of clusters obtained by performing clustering on results of detection performed on the object the plurality of times, clusters including a certain number or more of representative points of other clusters within a certain distance from representative points of the clusters.

Abstract: A communication apparatus includes a substrate, an antenna unit, and a covering part. The antenna unit is positioned on at least one main surface of the substrate. The covering part is positioned on the main surface of the substrate so as to be in contact with at least a part of an upper portion of the antenna unit.

Abstract: An electronic device includes a transmission antenna, a reception antenna, a cover part, and a signal processor. The transmission antenna is configured to transmit a transmission wave. The reception antenna is configured to receive a reflection wave resulting from reflection of the transmission wave. The cover part is configured to cover at least part of at least one of the transmission antenna or the reception antenna. The signal processor is configured to detect an object that reflects the transmission wave based on at least one of a transmission signal transmitted as the transmission wave or a reception signal received as the reflection wave. At least part of at least one of the transmission wave transmitted by the transmission antenna or the reflection wave received by the reception antenna is transmitted and/or received via the cover part. A thickness of the cover part is designed based on magnitude-squared coherence.

Abstract: An electronic device includes a transmission antenna, a plurality of reception antenna arrays, and a signal processor. The transmission antenna transmits a transmission wave. Each of the plurality of reception antenna arrays includes a plurality of reception antennas each configured to receive a reflected wave. The reflected wave is the transmission wave having been reflected. The signal processor detects, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave, displacement of a subject reflecting the transmission wave. The plurality of reception antenna arrays is arranged in different orientations from one another. The signal processor synthesizes the displacement of the subject detected by each of the plurality of reception antenna arrays.

Abstract: An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave, which is the reflected transmission wave, a controller that controls a radiation pattern of the transmission wave, a signal processor that detects an object on the basis of a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller performs control such that, when the transmission wave is transmitted a plurality of times in certain units, a transmission wave with a varied radiation pattern is included at least once. The signal processor outputs a result of the detection of the object on the basis of a composite cluster, which is superimposed point groups of a plurality of clusters obtained by performing clustering on results of detection performed on the object the plurality of times.

Abstract: A travel plan proposal system includes: a destination deriving unit configured to derive a predetermined number of destination areas from all destination areas on the basis of vacancy rates calculated for a plurality of accommodation facilities in the destination areas for each schedule pattern, and derive a candidate for the travel plan including a combination of the schedule pattern and the destination areas for the respective nights to stay; and a route deriving unit configured to set, for each candidate for the travel plan, a predetermined route for sequentially moving from a departure place to the respective destination areas and returning, and transportation means, and derive a candidate for the travel plan in which a total of representative accommodation costs of the destination areas in the candidate for the travel plan and a total of expenses required for the transportation means are within a budget.

Abstract: An electronic device includes a transmission antenna, a reception antenna, a signal processor, a quality determining unit, and a controller. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. The signal processor calculates, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave, a distance between the electronic device and an object that reflects the transmission wave. The quality determining unit determines a quality of the reception signal. The controller performs control for transmitting the transmission wave in an operation mode corresponding to the distance between the electronic device and the object, based on the quality of the reception signal determined by the quality determining unit.