Abstract: Architectures and techniques for radar interference detection are provided. A radar sensor system in accordance with the present disclosure may receive, via a radio frequency (RF) receiver, radar signals including a radar signal of interest and one or more interfering radar signals. The radar sensor system may calculate a Doppler spectrum for each of the radar signals and perform a chirplet transform on the Doppler spectrum to generate various waveform parameters. A Principal Component Analysis (PCA) may be performed on the waveform parameters to extract frequency features of the radar signals. The radar sensor system may classify the frequency features using a classifier to identify interfering frequency features associated with the interfering radar signals using a classifier. The radar sensor system may further extract interfering waveform information based on the interfering frequency features of the interfering RF signals.

Abstract: Multi-frequency microDoppler fusion is described. An example of a method includes performing a 2D Fourier transform of raw Radar sensor data and raw LiDAR sensor data to generate Radar range-Doppler map data and LiDAR range-Doppler map data; performing a Stationary Wavelet Transform (SWT) calculation of the Radar and LiDAR sensor range-Doppler map data to generate a Radar SWT product and a LiDAR SWT product; performing an SWT product thresholding operation to extract signatures that are common to the Radar SWT product and the LiDAR SWT product; and performing a microDoppler calculation on the extracted common signatures to generate Radar-LIDAR joint fused micro-Doppler signatures.

Abstract: Multi-sensor radar microDoppler holography is described. An example of a method includes performing a 2D Fourier transform calculation for multiple sets of raw Radar sensor data to generate Doppler spatial frequency map data, the raw sensor data including at least a first set of raw sensor data associated with a first Radar sensor at a first location and a second set of raw sensor data associated with a second Radar sensor at a second, different location; performing a DWT calculation of the Doppler spatial frequency map data; applying phase compensation to generate phase compensated data transforms; adding the phase compensated data transforms to generate a sum; performing an inverse 2D Fourier transform calculation to generate a transform result; and extracting microDoppler information and Doppler information extraction from the transform result.

Abstract: Abstract: A passenger seat assembly includes a passenger seat and a retractable divider assembly. The passenger seat includes a first side, a second side opposite from the first side, and a forward-facing surface extending between the first side and the second side. The retractable divider assembly is attached to the passenger seat proximate to the first side of the passenger seat and includes a divider. The divider is movable between a stowed position and a deployed position. In the deployed position, the divider extends in a forward direction relative to the forward-facing surface of the passenger seat.

Abstract: Architectures and techniques for radar signaling in emergency scenarios. A high-frequency radio signal in a first frequency range from a remote device with a local radio frequency (RF) receiver. The received radio signal in the first frequency range is converted to a corresponding signal in a second and lower frequency range. Signal phase information in the lower frequency signal is modified to generate a modified signal in the lower frequency range. The modified signal in the lower frequency range is converted to the first frequency range. The modified signal in the first frequency range is transmitted to the remote device with an RF transmitter.

Abstract: Techniques and architectures for managing radar sensor processing chains. A first high-frequency radio signal is received with a first RF receiver in the plurality of RF sensor suites on a host platform. The received high-frequency radio signal is converted to a lower second frequency range. A chirplet transform is performed on the signal in the second frequency range. Stored relative location information for a second RF receiver in the plurality of RF sensor suites is retrieved. Radar waveform information corresponding to the second RF receiver in a processing stream corresponding to the first RF receiver is extracted by utilizing the retrieved information and results from the chirplet transform. A point cloud is generated based on the converted signal in the second frequency range and the extracted radar waveform information.

Abstract: Methods and systems are provided for generating an on-demand distributed aperture by mechanical articulation. In some aspects, a process can include steps for determining a location of an autonomous vehicle, determining whether a maneuver requires long range detections or medium range detections based on the location of the autonomous vehicle, positioning at least two articulated radars based on the determining of whether the maneuver requires long range detections or medium range detections, and enabling a mode of resolution based on the positioning of the at least two articulated radars and by utilizing a static radar. Systems and machine-readable media are also provided.

Abstract: Methods and apparatuses disclosed within provide a solution to problems associated with sensing apparatus of an automated vehicle (AV) not being able to adequately evaluate risks associated with objects that are not characteristic with a given driving environment. A sensing apparatus tuned to drive at quickly down highway may not adequately identify risks associated with pedestrians walking along that highway. A solution to this problem involves configuring a sensing apparatus to operate in two different modes, for example, a highway mode and a pedestrian mode at virtually the same time. This may include allocating a first percentage of processing resources to a highway mode and allocating a second percentage of processing resources to a pedestrian mode. When objects along the highway are consistent with a pedestrian, additional processing resources of the sensing apparatus may be allocated to the pedestrian mode to reduce a risk of impacting the pedestrian.

Abstract: The disclosed technology provides solutions for improving perception systems and in particular for improving object identification based on sensor point cloud data, such as radar point cloud data. A process of the disclosed technology can include steps for receiving point cloud data comprising a plurality of radar points, wherein each of the radar points corresponds with a first object or a second object in an environment, generating a semantic label for each of the radar points, and clustering the plurality of radar points based on the semantic label for each of the radar points, to generate a first point cloud cluster for the first object and a second point cloud cluster for the second object. Systems and machine-readable media are also provided.

Abstract: The present disclosure is directed to the transmission and reception of sets of very high frequency electromagnetic (EM) signals in ways that allow a sensing apparatus to discriminate between different sets of transmitted EM signals. Here a sensing apparatus may sequentially transmit different sets of EM signals. Each of these different sets of signals may include an encoded identifier that uniquely identifies each respective signal set of the different sets of signals. Each of these signal sets may include several pulses of a particular frequency with a same relative phase relationship followed by pulses that have a different phase relationship. These changes in phase may be used to encode the unique identifiers into the different sets of transmitted EM energy and these identifiers may be used by a sensing apparatus to associate specific received sets of EM energy with specific sets of transmitted EM energy.

Abstract: A radar apparatus at a vehicle may transmit a set of radar energy that is reflected off an object after which the reflected radar energy may be received at the radar apparatus. When relative motion of a radar apparatus and an object include movement in two different directions, power of the reflected radar signals may be spread out in a manner that makes data associated with the reflected radar signals difficult to interpret. This spreading out of the radar signals can make mappings of the received radar data appear to be smeared or distorted. To compensate for this smearing effect, mappings of this smeared radar data may be compared with curves from which compensation factors may be identified. These compensation factors may allow a processor to perform calculations to generate updated mappings of the radar data that may allow the processor to more accurately identify characteristics of the object.

Abstract: The present disclosure is directed to a plurality of different software models allowing a processor to perform calculations associated with different sets of criteria using data associated with variables that have a strong correlation with one or more of the different criteria sets. Methods consistent with the present disclosure may use several different sets of software that include instructions associated with the collection and evaluation of data associated with a vehicle and with an automated driving system. Different criteria sets may be associated with a range of operating modes, spectral content of received signals, phases of radar signals, and an angular coverage/field of view of the radar apparatus. Results generated by each of the software models may allow a processor to assign weights to the results generated by the different models to generate a combined result that in turn is used to update an operational mode of the radar apparatus.

Abstract: The present disclosure is directed to a modular radar apparatus and to methods for using a modular radar apparatus. Two or more modules of the radar apparatus may each include a reference signal antenna where a synchronization signal generated at a first module may be sent to a second module via a pair of respective reference signal antenna. When the synchronization signal is received by the second module, that signal may be provided to a phase locked loop (PLL) to synchronize timing of the second module with the first module. The PLL or a multiplier circuit could then generate signals with timing synchronized to the synchronization signal yet at frequencies higher than the synchronization signal. This synchronized timing may allow transmitted radar signals to be synchronized in time with received reflected radar signals more accurately because effects of transmitting synchronization signals via wired interconnects between modules is eliminated.

Abstract: The subject disclosure relates to techniques for enabling vehicle to everything communication. A radar sensor of the disclosed technology can include at least one memory and at least one processor coupled to the at least one memory. The at least one processor can be configured to receive a radar signal having radar data and message data, disaggregate the radar data and the message data using a heterodyne mixer, and provide the radar data to a radar signal processor via a waveform correlator.

Abstract: Methods and systems are provided for generating an on-demand distributed aperture by mechanical articulation. In some aspects, a process can include steps for determining a location of an autonomous vehicle, determining whether a maneuver requires long range detections or medium range detections based on the location of the autonomous vehicle, positioning at least two articulated radars based on the determining of whether the maneuver requires long range detections or medium range detections, and enabling a mode of resolution based on the positioning of the at least two articulated radars and by utilizing a static radar. Systems and machine-readable media are also provided.

Abstract: The subject disclosure relates to techniques for calibrating radar sensors and in particular, for facilitating intrinsic radar calibrations, e.g., in autonomous vehicle deployments. In some aspects, a radar calibration of the disclosed technology can include steps for receiving a radar signal comprising one or more known signal parameters, performing power compensation calculations based on the received radar signal, and determining if there is a calibration discrepancy in the radar sensor based on the power compensation calculations. In some aspects, the process can further include steps for applying a calibration offset to the radar sensor if it is determined that there is a calibration discrepancy in the radar sensor. Systems and computer-readable media are also provided.

Abstract: A storage box includes a compartment having a base and opposed sidewalls extending from the base. Each sidewall of the opposed sidewalls includes two first retaining surfaces extend away from the base and along the sidewall where the first retaining surfaces are a first distance away from each other. Each sidewall includes two parallel second retaining surfaces extending away from the first retaining surfaces and along the sidewall. The second retaining surfaces are a second distance away from each other and the second distance is greater than the first distance. The storage box includes a rod, and support surfaces associated with each sidewall of the first pair of opposed sidewalls are configured to support the rod.

Abstract: Methods and systems are provided for generating an on-demand distributed aperture by mechanical articulation. In some aspects, a process can include steps for determining a location of an autonomous vehicle, determining whether a maneuver requires long range detections or medium range detections based on the location of the autonomous vehicle, positioning at least two articulated radars based on the determining of whether the maneuver requires long range detections or medium range detections, and enabling a mode of resolution based on the positioning of the at least two articulated radars and by utilizing a static radar. Systems and machine-readable media are also provided.

Abstract: A system and method for sensing precipitation conditions near a vehicle. The precipitation radar system is mounted on the vehicle and includes a transmitter, a receiver, and an electronic control unit. The method transmits radar signals from the transmitter; receives reflected radar signals at the receiver; determines response information from the reflected radar signals for a region of interest; and uses the response information to determine precipitation conditions for the region of interest. The region of interest is defined, at least in part, by a range and the response information includes phase data, amplitude data, or both phase and amplitude data based on the reflected radar signals. The method and system may then use the precipitation conditions to control other responsive vehicle actions, such as activating a windshield heater, a windshield defroster, a windshield wiper or a combination thereof.

Abstract: A passenger seat with a recliner sofa system includes a passenger seatback with a seatback frame and a seatback cushion. The seatback cushion is rotatable relative to the seatback frame between a stowed configuration and a deployed configuration. In some examples, in the deployed configuration, the seatback cushion extends through the seatback frame. In various examples, in the deployed configuration, the seatback cushion of a forward passenger seat abuts a seat base of an aft passenger seat. In certain examples, a method of reclining a passenger seat with a recliner sofa system includes rotating a seatback cushion of a seatback of a passenger seat relative to a seatback frame of the seatback of the passenger seat, and positioning the seatback cushion relative to the seatback frame such that a portion of the seatback cushion extends through the seatback frame.