Abstract: An occupancy detection system for at least one vehicle seat includes: an antenna arrangement having an antenna; a control device that applies a radio-frequency transmission signal to, and receives a response signal from, the antenna arrangement; and a transmit array having a plurality of structured metallic layers disposed above each other and extending laterally, each two neighbouring metallic layers isolated from each other by an intermediate dielectric layer. The antenna arrangement transmits a radio-frequency transmission field through the transmit array onto the vehicle seat in response to the transmission signal and receives a radio-frequency response field through the transmit array to generate the response signal. The transmit array is adapted to refract at least one of the transmission field and the response field. The transmit array has a receive section that focuses a response field from a position of a vehicle seat to a position of a receive antenna.

Abstract: Disclosed is a slot antenna provided in a radar, the antenna comprising a substrate integrated waveguide (SIW) having a plurality of a plurality of slots, wherein each of the plurality of slots includes a first elongated opening, a second elongated opening, and a connecting opening connecting the first and second elongated openings, wherein a first center axis of the first elongated opening is offset from a second center axis of the second elongated opening.

Abstract: Systems and methods for fall detection on uneven surfaces utilizing radar are disclosed. For example, an electronic device may receive reflected energy from surfaces in an environment. Corresponding sensor data associated with an object moving on an uneven surface may be utilized to determine a velocity of the object and a height change of the object. When the velocity indicates that the object has stopped moving toward or away from the sensing device, and the height values indicate a sudden decrease in height, a fall event may be detected.

Abstract: An evaluation device for at least one radar sensor having an electronic unit which is designed to evaluate measuring signals of the radar sensor. The radar sensor is designed in such a way that, during its measuring cycles, it emits radar signals and to receive radar signals reflected from an area surrounding the radar sensor and outputs signals corresponding to the received reflected radar signals as measuring signals, while the radar sensor remains inactive for a predetermined pause time between two successive measuring cycles. The electronic unit is designed to perform a Fourier transform utilizing measuring signals from at least two different measuring cycles and/or utilizing evaluation signals derived from the measuring signals from at least two different measuring cycles. A corresponding method for evaluating at least one radar sensor is also described.

Abstract: A method includes receiving a first wireless signal detected by a first device in an environment, the first wireless signal including a first distortion pattern caused by an object moving in the environment, receiving a second wireless signal detected by a second device in the environment, the second wireless signal including a second distortion pattern caused by the object moving in the environment, determining, by comparing the first distortion pattern to the second distortion pattern, that the first distortion pattern and the second distortion pattern correspond to a same movement event associated with the object moving in the environment, determining a timing offset between the first device and the second device based on information associated with the first distortion pattern and the second distortion pattern, and determining, based on the timing offset, temporal correspondences between data generated by the first device and data generated by the second device.

Abstract: A UE includes: a wireless transceiver; a directional, reflection-based ranging system configured to determine directions and distances between the UE and reflectors; and a processor configured to: obtain, from the ranging system (1) a first direction, between the UE and a particular reflector, and (2) a first distance, between the UE and the particular reflector, corresponding to the first direction; determine, based on a positioning reference signal (PRS) received by the wireless transceiver from a PRS source (3) a second direction, corresponding to an angle of arrival of the PRS at the UE, and (4) a second distance, traveled by the PRS from the PRS source to the UE, corresponding to the second direction; and determine whether the second distance is a line-of-sight distance between the UE and the PRS source based on the first direction, the first distance, the second direction, and the second distance.

Abstract: A digital self-injection-locked (SIL) radar includes a digital SIL oscillator, a wireless signal transceiver and a digital frequency demodulator. The digital SIL oscillator generates a digital output signal. The wireless signal transceiver is electrically connected to the digital SIL oscillator to convert the digital output signal into a wireless signal for transmission to a target, receives a reflected signal from the target, and converts the reflected signal into a digital injection signal for injection into the digital SIL oscillator. Accordingly, the digital SIL oscillator operates in an SIL state and generates a digital oscillation signal. The digital frequency demodulator is electrically connected to the digital SIL oscillator to receive and demodulate the digital oscillation signal into a digital demodulation signal.

Abstract: Processing of a range-Doppler matrix of a radar system is described. For easy, efficient and rapid ascertainment of a detection threshold of the range-Doppler matrix, only a partial quantity of the cells of the range-Doppler matrix is selected, and the detection threshold is ascertained on the basis of the selected partial quantity of cells of the range-Doppler matrix.

Abstract: An estimating method includes: measuring and receiving reception signals including a reflected signal reflected by a moving body, for a first period equivalent to a cycle of movement of the moving body; calculating first complex transfer functions indicating propagation characteristics, from the reception signals measured in the first period; calculating second complex transfer functions having reduced components corresponding to fluctuations, from the first complex transfer functions; extracting moving body information corresponding to a component related to the moving body by extracting moving body information corresponding to a predetermined frequency range of the second complex transfer functions calculated; and estimating a direction in which the moving body is present using the moving body information.

Abstract: A radar sensing system for a vehicle includes a radar sensor disposed at the vehicle so as to sense exterior of the vehicle. The radar sensor includes a plurality of transmitters that transmit radio signals and a plurality of receivers that receive radio signals. The received radio signals are transmitted radio signals that are reflected from an object. A processor is operable to process an output of the receivers. The radar sensor includes a printed circuit board having circuitry disposed thereat. The radar sensor includes a radome. At least some of the antennas are embedded or encapsulated in the radome.

Abstract: A vehicle radar sensor utilizes Frequency Modulated Continuous Wave (FMCW) radar signals that incorporate non-uniform FMCW chirps having chirp profiles that differ from one another to sense one or more parameters of one or more objects in a field of view of the radar sensor. The chirp profiles may differ from one another in various manners, e.g., based on starting frequency, repetition interval, duration and/or slope, and among other advantages, may be used to enhance sensing of various parameters such as range, Doppler/velocity and/or angle.

Abstract: A computer implemented method of tracking a travelling vessel, comprising obtaining a list of plurality of satellites capable of detecting the vessel at location(s) along predicted path(s) of the vessel. For each of the location(s) the following is performed: (a) Predicting vessel's possible future location(s) according to estimated movement vectors derived from a movement graph generated based on historical movement path(s), a recent movement path and a current location of the vessel. (b) Estimating satellites observation windows to identify candidate observation window(s) in which the satellite(s) have visual coverage of the possible future location(s). (c) Calculating detection score for each candidate observation window according to location probability score assigned to the possible future locations and view probability score assigned to the candidate observation windows. (d) Selecting preferred observation window presenting highest detection score.

Abstract: An embodiment of a radar subsystem includes at least one antenna and a control circuit. The at least one antenna is configured to radiate at least one first transmit beam and to form at least one first receive beam. And the control circuit is configured to steer the at least one first transmit beam and the at least one first receive beam over a first field of regard during a first time period, and to steer the at least one first transmit beam and the at least one first receive beam over a second field of regard during a second time period.

Abstract: A variety of methods, controllers and algorithms are described for identifying the back of a particular vehicle (e.g., a platoon partner) in a set of distance measurement scenes and/or for tracking the back of such a vehicle. The described techniques can be used in conjunction with a variety of different distance measuring technologies including radar, LIDAR, camera based distance measuring units and others. The described approaches are well suited for use in vehicle platooning and/or vehicle convoying systems including tractor-trailer truck platooning applications. In another aspect, technique are described for fusing sensor data obtained from different vehicles for use in the at least partial automatic control of a particular vehicle. The described techniques are well suited for use in conjunction with a variety of different vehicle control applications including platooning, convoying and other connected driving applications including tractor-trailer truck platooning applications.

Abstract: Embodiments include methods, systems and computer readable storage medium for a method for determining a fine direction of arrival (DOA) for a target is disclosed. The method includes receiving, by a plurality of receivers of a radar system, radar signals reflected by a target. The method further includes mitigating, by the radar system, phase shifts in the radar signals caused by a motion of the target. The method further includes determining, by the radar system, the fine DOA in response to the mitigation of phase shifts and based on the radar signals. The method further includes estimating and storing, by the radar system, a Doppler frequency based on the fine DOA.

Abstract: A radar target simulator for simulating radar targets is provided. The radar target simulator has an analogue-to-digital converter having a first clock generator and a digital-to-analogue converter having a second clock generator. The analogue-to-digital converter is configured to receive a radar signal transmitted by a radar system as an input signal, while the digital-to-analogue converter is configured to return an output signal to the radar system for simulation of the radar target. Further, the first and the second clock generator are configured to operate the analogue-to-digital converter and the digital-to-analogue converter at a different sampling rate in each case.

Abstract: There is provided an apparatus for generating a jamming signal for deceiving a transmission/reception device. The apparatus includes a reception unit configured to receive a signal transmitted from the transmission/reception device and a determination unit configured to determine whether or not the received signal is a pulse compression signal. The apparatus further includes a generation unit configured to determine, when the received signal is a pulse compression signal, a deception frequency based on a frequency bandwidth and a pulse width of the received pulse compression signal and generate the jamming signal based on the determined deception frequency.

Abstract: A Doppler radar sensor with a power detector is disclosed. In the Doppler radar sensor, a power detector is provided to detect the power level of a received transmission signal, and a leakage and clutter canceler is provided to generate a cancellation signal according to the power level of the received transmission signal. The cancellation signal is used to cancel leakage and clutter in the received transmission signal such that object displacement in the received transmission signal can be identified.

Abstract: A system for receiving and processing satellite signals from satellites of global navigation systems, in particular for a vehicle, having a signal path includes a signal conditioning unit for conditioning received satellite signals, an analysis unit for analyzing the conditioned satellite signals, and a position determination unit for determining measured values utilizing the satellite signals provided by the analysis unit. The measured values include a position, a speed, and/or a satellite time. The system has two signal paths which are separate from one another and each process mutually independent satellite signals for a position.

Abstract: A method of detecting obstacle vehicles present in a virtual driving environment by using a virtual radar sensor for an ADAS test of a vehicle is disclosed. The disclosed obstacle detection method may include: establishing an obstacle vehicle candidate group from at least one obstacle vehicles each represented by four points in a virtual driving environment, where the obstacle vehicle candidate group includes obstacle vehicles that are wholly or partially included in a sensing range of the virtual radar sensor; updating the obstacle vehicle candidate group by excluding an obstacle vehicle that is located in a shadow region from the obstacle vehicle candidate group; and calculating the shortest distance between an obstacle vehicle included in the updated obstacle vehicle candidate group and the virtual radar sensor.