Abstract: A synthetic aperture radar signal processing device 10 includes a persistent scatterer extraction unit 11 which extracts, from time-series observation data related to an observation target observed from a plurality of observation directions by a radar, a plurality of persistent scatterers in respective observation directions; a persistent scatterer grouping unit 12 which groups the plurality of persistent scatterers in each of the observation directions; a group selection unit 13 which selects, in each of the observation directions, a persistent scatterer group that includes the persistent scatterers included in an analysis target from among groups generated by grouping; and a displacement speed processing unit 14 which synthesize displacement speeds of the selected persistent scatterer groups.

Abstract: A method and system for sensing objects disposed about a vehicle includes LIDAR sensors in a LIDAR sensing unit mounted above the vehicle. The system includes outputting a plurality of laser beams from lasers while rotating the LIDAR sensing unit and simultaneously oscillating or changing an axis of rotation for the LIDAR sensing unit. The LIDAR sensors receive a reflection of the laser beams and convert optical signals to electrical signals. An electronic processor is configured to determine a presence or absence of objects from the electrical signals and provide a warning indication or control movement of the vehicle in response to detection of objects. The oscillating of the LIDAR sensing unit causes the laser beams to change an angle with respect to horizontal during rotation. The change in oscillation or offset angle for an axis of rotation is accounted for by the electronic processor to map the presence of objects. An autonomous vehicle is controlled based on the sensed objects or a warning is provided.

Abstract: Multi-channel radio frequency (RF) transmitter (100) and method of calibrating the transmitter are provided.

Abstract: Device, system, and method of aircraft protection and countermeasures against threats. A system for protecting an aircraft against a threat, includes a dual frequency Radio Frequency (RF) module, which includes: a dual-band RF transmitter and a dual-band RF receiver, to transmit and receive high-band RF signals and low-band RF signals; and a threat confirmation and tracking module, to confirm and track a possible incoming threat based on processing of high-band RF signals and low-band RF signals received by the dual-band RF receiver. The system further includes a dual frequency band antenna, to transmit and receive the high-band RF signals and the low-band RF signals. The system also includes a directed high-power laser transmitter, to activate a directed high-power laser beam as countermeasure towards a precise angular position of a confirmed threat.

Abstract: Embodiments disclosed herein relate to a target detection apparatus and method, and a vehicle control apparatus and method. A vehicle control apparatus includes: an image sensor operable to be disposed at a vehicle so as to have a field of view of exterior of the vehicle, the image sensor configured to capture image data; a processor configured to process the image data captured by the image sensor; and a controller configured to select a control target responsive at least in part to processing by the processor of the image data.

Abstract: In an embodiment, a millimeter-wave system includes a first circuit having M channels, one or more antennas coupled to the first circuit, and a controller that includes a resource scheduler module. The controller is configured to operate the millimeter-wave system as a radar device and as a communication device based on an output of the resource scheduler module.

Abstract: For example, an apparatus may include a radar antenna including at least one Transmit (Tx) antenna to transmit a Tx radar signal; and a plurality of Receive (Rx) antennas to receive Rx radar signals based on the Tx radar signal, wherein a distance between a first Rx antenna of the planarity of Rx antennas and a second Rx antenna of the plurality of Rx antennas, which is adjacent to the first Rx antenna, is at least ten times a wavelength of a central frequency of the Tx radar signal.

Abstract: In one embodiment, a method includes configuring a radar transceiver to transmit a first number of radar pulses at a first pulse repetition frequency (PRF); and determining a first value corresponding to a first object based on a first radar data received in response to the first number of radar pulses. The first object is identified based on the first value being higher than a predetermined threshold value. The method also includes configuring the radar transceiver to transmit a second number of radar pulses at a second PRF that is higher than the first PRF; determining a second value of the first object based on a second radar data received in response to the second number of radar pulses; and associating the second value with information of the first object.

Abstract: A radiation pattern reconfigurable antenna includes an input port, a signal divider, a filter, and first and second radiators. The signal divider is connected to the input port and configured to divide a signal at the input port into a first output and a second output. The filter is connected to the second output, wherein the filter is configured to filter signal within a first frequency band and to pass signals within a second frequency band. The first radiator is configured to receive the signal from the first output of the signal divider, wherein the first radiator receives signals within the first frequency band and the second frequency band. The second radiator is connected to the filter to receive signals provided within the second frequency band.

Abstract: A method is provided that includes a method is provided that includes transmitting a radar signal by a radar system. The method also includes receiving reflections of the radar signal from an environment by the radar system. Additionally, the method includes receiving a location of a plurality of objects in the environment by a radar processing system. The method further includes tracking a plurality of reflecting objects in the environment based on the received reflections by the radar processing system. Yet further, the method includes determining, by the radar processing system, that a received radar reflection corresponds to one of the plurality objects in the environment having an incorrect location. Moreover, the method includes revising a tracking for the one of the plurality objects in the environment having an incorrect location.

Abstract: A vehicle radar device includes a first antenna unit, a second antenna unit, at least one computing unit and at least one circuit board. The first antenna unit and the second antenna unit are communicatively connected to the at least one computing unit. The at least one circuit board includes a first board portion and a second board portion. The first antenna unit is a circuit board type and disposed on the first board portion. The second antenna unit is a circuit board type and disposed on the second board portion. The at least one computing unit disposed on at least one of the first board portion and the second board portion. When an angle between the first board portion and the second board portion is P12, and the following condition is satisfied: 80degrees ?P12?130 degrees.

Abstract: During operation, a transmitter in an electronic device may provide, to a transmission path, an electrical signal. This electrical signal may be divided by the power splitter into a first output electrical signal in a first output transmission path and a second output electrical signal in a second output transmission path, which may result in transmitting of the first wireless signal and the second wireless signal by antennas. Because the second output transmission path may include a delay element that provides a delay, the second wireless signal may be delayed relative to the first wireless signal. Moreover, N radar receivers in the electronic device may receive first wireless-return signals corresponding to the first wireless signal and second wireless-return signals corresponding to the second wireless signal. These wireless-return signals may be combined to create a virtual array MIMO radar having an antenna aperture size of 2N.

Abstract: In one embodiment, a method includes determining one or more transmission criteria for a radar system. The radar system having a number of antenna elements. The method also includes determining a configuration of a selected subset of the number of antenna elements satisfying the one or more transmission criteria; configuring a switching network to couple each antenna element of the selected subset of antenna elements to a corresponding receiving channel and a corresponding transmitting channel; and causing the radar system to transmit and receive signals using the selected subset of antenna elements.

Abstract: A system and method for localization includes a processing system with at least one processing device. The processing system is configured to obtain sensor data from a sensor system. The sensor system includes at least one radar sensor. The processing system is configured to obtain map data. The processing system is configured to determine if there is a predetermined number of detected features. The detected features are associated with the sensor data of a current sensing region of the sensor system. The processing system is configured to generate localization data based on the detected features of the current sensing region upon determining that the predetermined number of detected features is satisfied. The processing system is configured to obtain tracked feature data upon determining that the predetermined number of detected features is not satisfied and generate localization data based on the tracked feature data and the detected features of the current sensing region.

Abstract: To provide a vehicle detection system capable of detecting a preceding vehicle traveling ahead of an own vehicle based on a position of an object by using an electromagnetic wave sensor while suppressing erroneous detection, an ECU determines if first and second positions detected by a millimeter wave radar are included in the same vehicle. The ECU designates calculated information of the preceding vehicle detected based on the first position as a calculation result if it determines that detection of the preceding vehicle is made based on the first position. The ECU uses calculated information of the preceding vehicle detected based on the second position as the calculation result when it determines that detection of the vehicle is not made based on the first position but the first and the second positions had been determined in the past as detected in the same vehicle.

Abstract: A system for measuring phase coherence between two modulated radio frequency signals comprises at least two measurement receivers coupled with each other and a processing module assigned to the at least two measurement receivers. Each of the at least two measurement receivers is configured to acquire a radio frequency signal and to convert the respective radio frequency signal acquired into digital samples. The processing module is configured to receive the digital samples and to transform the digital samples into a frequency domain to obtain a respective transformed dataset assigned to each measurement receiver. The processing module is also configured to calculate a phase in dependency of the frequency from the respective transformed dataset. Moreover, the processing module is configured to determine a phase difference over frequency based on the transformed datasets. Further, a method of measuring phase coherence between two modulated radio frequency signals is described.

Abstract: Angle-resolving radar sensor for motor vehicles, including: an antenna array including multiple antennas, configured for receiving, situated in various positions in one direction in which the radar sensor is angle-resolving, and a control and evaluation unit configured for an operating mode in which at least one antenna of the radar sensor configured for transmitting transmits a signal received by multiple of the antennas of the radar sensor configured for receiving, and the angle of a radar target is estimated based on amplitude and/or phase relationships between signals of respective evaluation channels, which correspond to different configurations of transmitting and receiving antennas, an evaluation of the signals of the evaluation channels for a respective distance for a respective evaluation channel taking place for an individual estimation of an angle of a radar target, different distances being selected for respective evaluation channels as a function of an angle or angle range hypothesis.

Abstract: A method for constructing a vehicular radar sensor includes providing antenna structure and a printed circuit board having a first layer and a second layer with a copper layer disposed between the first and second layers. The antenna structure includes transmitting antennas that are operable to transmit radio signals, and receiving antennas that receive radio signals transmitted by the transmitting antennas and reflected from an object. The first layer is joined to a first side of the copper layer and the second layer is joined to a second side of the copper layer, with the copper layer spanning between and contacting opposed surfaces of the first and second layers. At least one waveguide is established through the copper layer. Electronic circuitry is disposed at the first layer of the printed circuit board and at least part of the antenna structure is disposed at the second layer of the printed circuit board.

Abstract: Devices, systems, and methods for interacting instrumentation with high and/or low energy systems are disclosed. In some illustrative embodiments, a sensor assembly for level measurement of high and/or low energy systems may comprise an instrumentation head to determine a level of media in a tank; a coupler including a body having a mounting end for connection to equipment of a high or low energy system and a receiving end for receiving connection of the instrumentation head, a coaxial hardline extending between the mounting and receiving ends and including a conduction tip arranged near the mounting end; and a sealing system including a first seal section disposed between the conduction tip and the receiving end of the body.

Abstract: An analog beamformer includes: an input circuit configured to receive an input signal to generate a first input signal having the same phase as the input signal and a second input signal having a phase difference corresponding to a first phase with respect to the input signal; a first delay circuit configured to delay the first input signal to output a first delayed signal; a second delay circuit configured to delay the second input signal to output a second delayed signal; and an output circuit configured to output an output signal by summing the first delayed signal and the second delayed signal, wherein a first write signal has the phase difference corresponding to the first phase with respect to a second write signal, and a first read signal has the phase difference corresponding to the first phase with respect to a second read signal.