Abstract: A radar-based fill-level measuring device, comprises the following parts: a semiconductor component for producing electrical high-frequency signals or for determining the fill-level value from the received high-frequency signals; a dielectric waveguide placed in contact with the semiconductor component to couple the high-frequency signals as radar signals into an antenna and/or to couple received radar signals from the antenna as electrical signals into the semiconductor component; a potting encapsulation, which encapsulates at least the waveguide radially such that a defined cavity is formed between the waveguide and the potting encapsulation.

Abstract: This document describes techniques and systems for frequency division multiplexing (FDM) with polyphase shifters. A radar system can include transmitters, receivers, polyphase shifters, and a processor. The transmitters emit electromagnetic (EM) signals in an FDM scheme, and the receivers detect EM signals reflected by objects. The received EM signals include multiple channels. The processor controls the polyphase shifters to introduce phase shifts to the EM signals. The processor can also divide a Doppler-frequency spectrum of the received EM signals into multiple sectors representing a respective frequency range. Each channel is associated with a respective sector. The processor can determine, using non-coherent integration across the sectors, potential detections of the objects, including aliased and actual detections. The processor can then determine the actual detections. In this way, the described FDM techniques with polyphase shifters can resolve Doppler ambiguities in received EM signals.

Abstract: A sensor installation structure includes: an exterior panel provided at a side part of a vehicle; an installation surface arranged at a location recessed inward in the vehicle width direction from a general surface of the exterior panel; a connecting surface connecting between a peripheral edge of the installation surface and the general surface; and a surroundings information sensor that detects surroundings information of the vehicle and that is located inward in the vehicle width direction from the installation surface. The connecting surface, in elevating from the peripheral edge of the installation surface toward the general surface, slopes so as to extend outward in the surface direction when viewed from the installation surface.

Abstract: A method and a radar system are provided in the present disclosure. The radar system includes a radar unit having an antenna array configured to transmit and receive radar signal and a memory configured to store radar calibration parameters and radar channel parameters corresponding to the radar unit. The method provides for operation of the radar system. The radar system also includes a radar processor. The radar processor is configured to cause transmission of radar signals by the antenna array based on the radar channel parameters. The radar processor is also configured to process received radar signals based on the radar calibration parameters. The radar system further includes a central vehicle controller configured to operate a vehicle based on the processed radar signals.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for identifying gesture. A radar antenna array applied to mobile User Equipment (UE) includes a transmit (Tx) antenna array located on a horizontal line and configured to transmit radar waves and a receive (Rx) antenna array including horizontal Rx antennae arranged along a horizontal dimension and/or pitch Rx antennae arranged along a pitch dimension. The horizontal dimension and the pitch dimension are perpendicular to each other. The Rx antenna array is configured to receive echoes caused by reflection of the radar waves. The horizontal Rx antennae are located on the horizontal line where the Tx antenna array is located. The pitch dimension is perpendicular to the horizontal line. A transmitting parameter for transmitting the radar waves and a receiving parameter for receiving the echoes are used at least for identifying a gesture within a radiation range.

Abstract: A radar includes a transmitter antenna unit including a plurality of transmitter antennas arranged in a diagonal direction based on a first horizontal interval and a first vertical interval, a receiver antenna unit including a first receiver antenna group and a second receiver antenna group arranged based on the first horizontal interval, a transceiver configured to transmit a transmission signal through the transmitter antenna unit and receive a reflection signal reflected from a target object through the receiver antenna unit and a processing unit configured to extract information about the target object by processing the received reflection signal.

Abstract: One example includes a radar image interface system. The system includes an image processor configured to receive synthetic aperture radar (SAR) image data associated with a region of interest and to generate a radar image of the region of interest based on the SAR image data. The image processor can be further configured to divide the radar image into a plurality of sequential units corresponding to respective zones of the region of interest. The system also includes a display system configured to display zoomed sequential units corresponding to respective zoomed versions of the sequential units of the radar image to a user. The system further includes an input interface configured to facilitate sequentially indexing through each of the zoomed versions of the sequential units on the display system in response to an indexing input provided by the user.

Abstract: A mechanism is provided for estimating mounting orientation yaw and pitch of a radar sensor without need of prior knowledge or information from any other sensor on an automobile. Embodiments estimate the sensor heading (e.g., azimuth) due to movement of the automobile from radial relative velocities and azimuths of radar target detections. This can be performed at every system cycle, when a new radar detection occurs. Embodiments then can estimate the sensor mounting orientation (e.g., yaw) from multiple sensor heading estimations. For further accuracy, embodiments can also take into account target elevation measurements to either more accurately determine sensor azimuth and yaw or to also determine mounting pitch orientation.

Abstract: A radar sensor is provided, including sensor circuitry, electronic evaluation circuitry, communication circuitry, power supply circuitry, and a housing, the sensor circuitry being configured to emit and/or to receive a radar signal through the housing, the housing being configured such that the radar signal can be transmitted through the housing, the electronic evaluation circuitry being configured to detect an object based on the radar signal and/or to determine a distance between the radar sensor and the object, the electronic evaluation circuitry being further configured to determine at least one parameter representative of the detected object and/or of the determined distance, the communication circuitry being configured to wirelessly communicate the at least one parameter through the housing to a receiver, and the housing completely enclosing the sensor circuitry, the electronic evaluation circuitry, the power supply circuitry, and the communication circuitry.

Abstract: An object detection apparatus is configured to be mounted to a vehicle to detect objects existing around the vehicle. The object detection apparatus includes an output acquisition unit, an accuracy estimation unit, a weighting setting unit and a position calculation unit. The output acquisition unit is configured to acquire output signals from a plurality of radar sensors mounted respectively at different positions in the vehicle. The accuracy estimation unit is configured to estimate, based on the output signals from the radar sensors, detection accuracies of the radar sensors. The weighting setting unit is configured to set, according to the detection accuracies of the radar sensors, weighting for the output signals from the radar sensors. The position calculation unit is configured to calculate a position of an object by using in combination the output signals from the radar sensors reflecting the set weighting.

Abstract: According to a radar system according to these embodiments, by mounting a radar antenna, an RF device, and a controller on an upper face and a lower face of a circuit board, the size and the cost can be reduced by decreasing the number of constituent components, and the reliability and the durability can be improved by discharging heat generated in the circuit board to the outside.

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: A device comprising circuitry configured to: obtain radar signal measurements simultaneously acquired by two or more radar sensors having overlapping fields of view, derive range information of one or more potential targets from samples of radar signal measurements of said two or more radar sensors acquired at the same time or during the same time interval, the range information of a single sample representing a ring segment of potential positions of a potential target at a particular range from the respective radar sensor in its field of view, determine intersection points of ring segments of the derived range information, determine a region of the scene having one of the highest densities of intersection points, select a ring segment per sensor that goes through the selected region, and determine the most likely target position of the potential target from the derived range information of the selected ring segments.

Abstract: A defense system that receives information regarding an incoming object(s), then automatically coordinates spoofing or jamming of SATNAV signals potentially used by the incoming object(s) while also informing friendly systems of the spoofing or jamming of SATNAV signal.

Abstract: A system for detecting threats using an overt threat detector, the system includes a computer-readable memory configured to store computer executable instructions; a processor configured to execute the computer executable instructions, the computer executable instructions comprising receiving historical data regarding vessel patterns in a geographic area; generating, using a computer processor, at least one overt threat model based on the received historical data; receiving tracking data of vessels currently in the geographic area; analyzing, using the computer processor, the tracking data of vessels using the at least one overt threat model; and modifying, using the computer processor, the tracking data of vessels based on the results of the analyzing step; and an output device configured to output the modified tracking data of vessels is disclosed.

Abstract: Waveguide and/or antenna assemblies for RADAR sensor assemblies/modules, particularly those for vehicles. In some embodiments, the assembly may comprise a waveguide block defining one or more waveguides, each waveguide defined by a waveguide groove. In some embodiments, at least a portion of at least one waveguide groove is non-straight, such as meandering/oscillating back and forth. An antenna structure may be operably coupled with the one or more waveguides, which structure may comprise an array of one or more slots. In some embodiments, a single, elongated slot of the one or more slots may extend along an axis of each waveguide groove for delivering electromagnetic radiation from a corresponding waveguide of the one or more waveguides therethrough.

Abstract: A system and method for applying an adaptive adjustment or taper to an electronically scanned array (ESA) weather radar based on feedback from the weather radar. To minimize ground clutter and enable the ESA to display hazardous weather phenomena, the system adaptively adjusts amplitude and phase of ESA elements to adjust the far field pattern shape and sidelobes to maintain a desirable signal to clutter ratio. The system identifies ground clutter as a strong ground return over several azimuths depending on the radar beamwidth. Once the system IDs the ground clutter, it adaptively adjusts on receive for for the upcoming azimuths. The system selectively suppresses sidelobe echoes while maintaining the signal to noise (SNR) for weather targets. The system adaptively adjusts in real time as well as adjusting using precomputed historically accurate tapers stored in memory.

Abstract: Methods and systems are described that enable radar detection prioritization based on downstream feedback. As a vehicle is traveling in a travel corridor, radar detections are received by a processor and feedback related to a downstream function is received from another processor that is executing the downstream function. For the radar detections that are determined to be within the travel corridor, respective priorities are assigned based on locations of the radar detections and the feedback related to the downstream function. The radar detections with the assigned priorities are then stored in a detection buffer along with indications of their respective assigned priorities. In this way, the detection buffer may be optimized for the downstream function by filtering out certain detections and prioritizing others. Consequently, computational loads on the downstream function are reduced while ensuring that important detections are received by the downstream function early.

Abstract: The disclosed radar system may include a radar mechanism comprising a transmitter and at least one receiver. The radar system may also include a signal generator that generates a frequency-modulated radar signal. In addition, the radar system may include at least one frequency multiplier that, after multiplying a frequency of the frequency-modulated radar signal by a certain factor, synchronously passes the frequency-modulated radar signal to (1) the transmitter to be transmitted to at least one transponder located on a wearable device and (2) a processing device communicatively coupled to the receiver. The processing device may (1) detect a signal returned to the receiver from the transponder in response to the frequency-modulated radar signal and (2) calculate a distance between the transponder and the receiver based at least in part on an analysis of the signal returned from the transponder and the frequency-modulated radar signal received from the frequency multiplier.

Abstract: A processor-implemented radar data recognition method includes: generating a plurality of pieces of input data, with respectively different dimension configurations, based on radar data of an object; and outputting a recognition result of the object based on the generated plurality of pieces of input data using a recognition model.