Abstract: A method for operating a heating device for controlling the temperature of a radome of a radar sensor of a vehicle includes the steps of: receiving surroundings data that describe surroundings of the vehicle and/or at least one area of the radome of the vehicle, detecting a deposit of a precipitation on the radome on the basis of the surroundings data, outputting a heating signal to the heating device in order to control the temperature of the radome on the basis of the detected deposit of the precipitation. The surroundings data received are image data from at least one camera of the vehicle. The image data are used to detect the precipitation in the surroundings and/or on the area of the radome.

Abstract: A radar system including a transmitter configured for installation and use with the radar system and configured to transmit radio signals. The transmitted radio signals are defined by a spreading code. The radar system also includes a receiver configured for installation and use with the radar system and configured to receive radio signals that include transmitted radio signals transmitted by the transmitter and reflected from objects in an environment. The receiver is configured to convert the received radio signals into frequency domain received samples. The receiver is also configured to correlate the frequency domain received samples to detect object distance.

Abstract: A radar level gauge comprising a signal propagation device, a dielectric filling member arranged in the signal propagation device, and a sealing arrangement for preventing tank content from escaping into the outside environment, wherein the dielectric filling member comprises a main body and a sealing arrangement comprising a first sealing portion. The radar level gauge further comprises a structural reinforcement element positioned above the first sealing portion.

Abstract: A method of determining a distance between a radio frequency device and a target is disclosed in which the radio frequency device receives a radio frequency signal from the target. The method comprises determining a time domain channel response from the received radio frequency signal, determining an amplitude of a largest peak in the time domain channel response, determining an amplitude of a second, earlier, peak in the time domain channel response, comparing the second peak amplitude to a threshold based on the largest peak amplitude, identifying the largest peak as a shortest path peak if the second peak amplitude is less than the threshold, identifying the second peak as a shortest path peak if the second peak amplitude is greater than the threshold, and calculating the distance between the radio frequency device and the target based on a time corresponding to the shortest path peak.

Abstract: Concepts and examples pertaining to reconfigurable radio frequency (RF) front end and antenna arrays for radar mode switching are described. A processor associated with a radar system selects a mode of a plurality of modes in which to operate the radar system. The processor then controls the radar system to operate in the selected mode by utilizing a plurality of antennas in a respective configuration of a plurality of configurations of the antennas which corresponds to the selected mode. Each configuration of the plurality of configurations of the antennas results in respective antenna characteristics. Each configuration of the plurality of configurations of the antennas utilizes a respective number of antennas of the plurality of antennas.

Abstract: A blind spot detection system with speed detection function and device and method thereof are provided. The system is disposed on the rear portion of the vehicle, and includes a signal transceiving module and a central processing unit. The central processing unit includes a speed calculation module and an object detection module. The device includes a main body in which the signal transceiving module is disposed. A first signal is sent toward a detection area behind the vehicle for acquiring a second signal for blind spot detection. By calculation based on the second signal, a third signal is acquired for identifying the static and moving objects, and the relative speed between the vehicle and the static object is determined as the speed of the vehicle. Therefore, the blind spot detection system has a speed detection function.

Abstract: Two-dimensional data obtained by performing a Fourier transform on a digitally converted FMCW radar signal at every pulse repetition interval over N pulse repetition intervals is input to a convolutional neural network (CNN) to find the probabilities of the existence of a target in range indices. The range indices, i.e., bit frequencies are selected based on the probabilities of the existence of the target. In order to reduce the size of the CNN, windowing is applied to the two-dimensional data. A speed-index-specific coefficient value may be calculated by re-performing a Fourier transform on range data for the selected bit frequencies. Thus, the range and speed of the target may be calculated.

Abstract: A wearable device that can receive a plurality of Global Navigation Satellite System (GNSS) timing signals using an antenna, where the antenna is located in an exterior portion of the wearable device such that the antenna receives GNSS signals at the external portion of the wearable device, without the GNSS signals first passing through an air gap within a housing of the wearable device. The wearable device is configured to determine a geographic location of the wearable device based at least in part on the GNSS signals. The wearable device is configurable to perform underwater dead-reckoning procedures, measuring energy levels during dwell periods, measuring efficiency of swim strokes, sharing wearable device information with other electronic devices, calibrating the wearable device, or a combination thereof.

Abstract: Operations of the present disclosure include obtaining a first measure of velocity of a vehicle based on a plurality of locations determined for the vehicle. The operations also include obtaining, based on IMU measurements of an inertial measurement unit (IMU) of the vehicle, a second measure of velocity of the vehicle. In addition, the operations include performing calibration of the IMU based on the first measure of velocity and the second measure of velocity.

Abstract: A method for radio direction finding using a direction finding system having an antenna, a magnetic field sensor and a control unit, the method comprising: receiving a radio frequency signal of at least one emitter via the antenna by the control unit obtaining a received signal; receiving a magnetic measurement value of the magnetic field at the direction finding system via the magnetic field sensor; correcting the magnetic measurement value obtaining a corrected magnetic measurement value; correcting the received signal obtaining a corrected signal; and determining the precise bearing of the emitter based on the corrected received signal and the corrected magnetic measurement value. Further, a direction finding system and a platform are disclosed.

Abstract: A configuration to determine a timing offset between a first wireless device and a second wireless device in order to synchronize timing between the first wireless device and the second wireless device. The apparatus determines a timing offset between a first wireless device and a second wireless device based on at least one transmission received from the second wireless device. The apparatus determines a location of a target device based at least on the at least one transmission from the second wireless device and the timing offset between the first wireless device and the second wireless device.

Abstract: A bicycle radar system including a camera is disclosed. The system may include a radar unit and a mobile electronic device that are in communication with one another. The radar unit may transmit radar signals, receive return signals (reflections), and process the returned radar signals to determine a location and velocity of one or more targets located in a sensor field behind a user's bicycle. The mobile electronic device may include a communication component configured to wirelessly receive content including cartographic data and one or more high-risk geographic areas and a processor configured to determine a threat level based on the targets, the high-risk geographic area and a determined geographic position.

Abstract: The present disclosure provides a control method and device for a home device and a storage medium. The control method for the home device can include monitoring an action of a user through a radar wave emitted from the radar wave sensor, and controlling the home device to perform a function corresponding to the action of the user in response to monitoring that the action of the user matches a preset action.

Abstract: This application provides a transmission absorbing structure and an antenna in-band characteristics test system, relating to design of microwave antennas for radar and communication systems. The transmission absorbing structure includes a coupling feed structure provided with coupling slots for energy coupling with a to-be-tested antenna, two equivalent electric wall structures parallel to each other, and two equivalent magnetic wall structures parallel to each other. The two equivalent electric wall structures and the two equivalent magnetic wall structures together enclose the coupling feed structure, and form a transverse electromagnetic mode (TEM) waveguide. The system includes a vector network analyzer, a to-be-tested antenna electrically connected to the vector network analyzer, and a transmission absorbing structure.

Abstract: A system for tracking the movement of an object includes a radar device having a first field of view. The radar device generates radar data indicating one of a range corresponding to a distance of a moving object within the first field of view from the radar device and a range rate corresponding to a rate at which the distance is changing relative to the radar device. The system also includes an imager having a second field of view at least partially overlapping the first field of view in an overlap field of view. The imager generates imager data measuring, when the object is in the second field of view, an angular position of the object relative to the imager in at least one dimension. In addition, the system includes a processor combining the radar data and imager data, when the object is in the overlap field of view, to identify a track of the object in at least two dimensions.

Abstract: A method for determining a 3-dimensional (3D) attitude of a platform includes receiving satellite relayed information regarding an ambiguous phase single-difference measurement (?); resolving a phase ambiguity of the ambiguous phase single-difference measurement (?) to determine an unambiguous phase single-difference estimate (?); calculating coarse direction vectors xcor and ycor based on the unambiguous phase single-difference estimate (?); estimating improved direction vectors x and y based on the coarse direction vectors xcor and ycor and by imposing constraints on the improved direction vectors x and y and an angle between the improved direction vectors x and y; and calculating the 3D attitude of the platform from the improved direction vectors x and y.

Abstract: Methods and electronic devices for target detection and tracking operations are provided. A method of operating an electronic device includes identifying, based on signals received through a radar transceiver of the electronic device, a peak of the received signals in a current time slot, determining whether the peak in the current time slot corresponds to a tracked target based on comparing a location of the peak in the current time slot with a location of a peak corresponding to the tracked target in a previous time slot as a function of a movement speed threshold, and in response to a determination that the peak in the current time slot corresponds to the tracked target, updating tracking information for the tracked target associated with the peak in the current time slot.

Abstract: There is provided a processor-based method of identifying an airborne object, the method comprising: obtaining a series of target Radar Cross Section (RCS) measurements of an airborne object, with associated aspect angles of the airborne object relative to a measuring radar; calculating at least one estimation of a candidate aircraft RCS time series in accordance with the series of target aspect angles, a candidate aircraft type, and at least one candidate aircraft body orientation; and determining an identification of the airborne object with an aircraft type, in accordance with the estimations of a candidate aircraft RCS time series, and the series of target RCS measurements.

Abstract: A digitally modulated radar, DMR, transmitter module is disclosed comprising: a sequence generator, configured to generate a repeating digital sequence signal based on a relatively low-frequency clock signal; a mixer configured to combine the digital sequence signal with at least one phase-delayed copy of the digital sequence signal, to provide a combined signal; and a modulator configured to modulate a relatively high-frequency carrier signal, in dependence on the combined signal, to provide a modulated signal. Corresponding systems and methods are also disclosed.

Abstract: A method includes transmitting a first transmitted signal corresponding to a first range rate window size; receiving a first received signal; determining a first detected range rate of an object based on the first received signal; transmitting a second transmitted signal corresponding to a second range rate window size; receiving a second received signal; determining a second detected range rate of the object based on the second received signal; computing a first range rate window index based on a first range rate window index difference; in accordance with a determination that the first range rate window index meets predefined criteria, computing an estimated range rate based on the first range rate window index difference; and in accordance with a determination that the first range rate window index does not meet the predefined criteria, foregoing computing an estimated range rate based on the first range rate window index difference.