Abstract: Improvements in a battery optimization and restoration device that uses a means of varying the regulator voltage as a function of time and discharge event timing and depth in order to establish a consistent power level for the charging of the capacitor. The device models the power supply regulation voltage as a first order factor as a function of time. The regulation voltage is modeled as a function of time so as to maintain an acceptable charging current at all times by charging a large capacitive load which is periodically discharged in a rapid pulse-like manner requires a modeled regulation voltage that is synchronized to the discharge frequency of the capacitor. The modeled charging is a function of the discharge depth and the charging height in initial capacitor voltage before the discharge and the final capacitor voltage after the discharge.

Abstract: A vehicle battery diagnosis method and apparatus are provided. The vehicle battery diagnosis method includes receiving battery state history data including data stored based on state of charge (SOC) ranges of a battery and SOCs of the battery. Maximum distributions of the SOCs of the battery are then determined based on the battery state history data. A state of the battery is diagnosed based on a reduction rate among the maximum distributions of the SOCs of the battery based on the battery state history data.

Abstract: A testability method for the in-flight testing of an operating state of an electronic power chain having at least one power converter intended for driving an electric motor that actuates at least one aircraft component includes controlling actuation of the converter, transmitting a test signal, collecting at least one measurement signal, and determining an operating state.

Abstract: A signal processor is configured to receive signaling containing information about a sensed sinusoidal waveform of magnetic flux caused by a current flowing in a winding of a motor having a component of distortion caused at least in part by a magnetic flux created by the current flowing, and also about a pure sinusoidal waveform of a sensed fundamental frequency of the magnetic flux; and determine corresponding signaling containing information about anomalies in the motor that depends on a relationship between the sensed sinusoidal waveform and the pure sinusoid waveform, based upon the signaling received. The signaling may be sensed and provided by a motor magnetic flux sensor attached externally to the motor frame.

Abstract: A method for scanning artificial structure, wherein a scanning artificial structure apparatus comprises four magnetic-field sensors, the four magnetic-field sensors are non-coplanar configured, the method comprises following steps of: moving the scanning artificial structure apparatus along a scanning path within a to-be-tested area, in the meantime, measuring magnetic field by the four magnetic-field sensors, and recording a position sequence when measuring magnetic field, wherein four magnetic-field measurement sequences are measured by the four magnetic-field sensors; and calculating a magnetic-field variation distribution from the four magnetic-field measurement sequences and the position sequence, wherein the magnetic-field variation distribution is corresponding to at least one artificial structure distribution.

Abstract: Provided is a magnetic field measuring device which has good temperature stability and which enables an improvement by making it possible for the sensitivity of a Hall element, a magnetic impedance (MI) element or a magnetic resistance (MR) element, which are conventionally used extensively, to be set freely. This magnetic field measuring device comprises: a temperature maintaining means for maintaining an extremely low temperature state in which a superconductor adopts a superconducting state; a magnetic sensor which is provided inside the temperature maintaining means to detect a magnetic field; and a magnetic field space forming means for forming a magnetic field space specific to the superconducting state, by adopting a superconducting state inside the temperature maintaining means; wherein the magnetic sensor is disposed in the magnetic field space.

Abstract: A cell module used for a photoexcitation magnetic sensor includes a cell in which an alkali metal is enclosed, a heater which is disposed close to the cell to heat the alkali metal, and a case which forms a decompression region accommodating the cell and the heater.

Abstract: The present disclosure relates to methods and systems for interaction in magnetic resonance spectroscopy. After two or more metabolites and one or more operators are selected based on an input of a user to generate a composite, a concentration and a spatial distribution of the composite may be calculated. And a calculation result including the concentration of the composite may be displayed to the user.

Abstract: The disclosure relates to techniques to acquire at least one quantitative physiological parameter using a magnetic resonance system by means of MR fingerprinting. In this process, a plurality of slices are excited simultaneously using different imaging parameters to produce MR signal evolutions in each of the plurality of slices, and the MR data from the plurality of slices is then acquired simultaneously. For the simultaneous excitation of the plurality of slices, a flip angle (FW) that is used to excite one of the plurality of slices differs from a flip angle (FW) that is used to excite another of the plurality of slices.

Abstract: A method for MRI imaging of a subject includes spatially encoding spins in a slice of the subject in orthogonal first and second directions. The encoding includes applying a chirped radiofrequency (RF) pulse concurrently with application of a magnetic field gradient pulse along the first direction. After applying of the RF pulse, a second chirped RF pulse is applied concurrently with application of a second magnetic field gradient pulse, with polarity opposite that of the first gradient pulse. An encoding magnetic field gradient, constant from applying the first RF pulse until the end of applying the second RF pulse, is concurrently applied along the second direction. Following the encoding, a spin signal is measured concurrently with application of a constant readout magnetic field gradient.

Abstract: A method for correcting a wrongly detected motion of an object under examination during an MR imaging procedure at which MR signals from a first part of the object are detected in order to generate MR images of the first part. A first motion signal of the object is detected during MR signal detection, and a second motion signal of the objet is detected during MR signal detection. The first motion signal is correlated with the second motion signal in order to separate an actual motion of the first part from the wrongly detected motion. A presence of the actual motion and the wrongly detected motion in the two motion signals is different. A motion compensation is carried out on the generated MR images in which substantially only the actual motion and not the wrongly detected motion of the object under examination is corrected in the detected MR signals.

Abstract: A method and system for enabling the determination of a position of a receiver within a space includes transmitting a beacon signal from each of a plurality of beacon devices located at different locations within the space. The beacon signal transmitted from each beacon device has a unique information component and may have a unique frequency pattern of multiple frequencies. Each beacon signal can be distinguishable from the beacon signals transmitted from any other of the beacon devices based on the combination of its unique information component and its unique frequency pattern. The beacon signals are received at a receiver. At the receiver, for each beacon signal of a working subset, time-delay information of the received beacon signal is determined and multilateration is applied to determine the position of the receiver based on the location of each beacon device of the working subset.

Abstract: Detection of a trajectory of a supersonic projectile is carried out derived from a plurality of acoustic detection signals. From these acoustic detection signals, two or more shockwave-derived trajectory estimates can be derived. Further, a wake derived trajectory bearing estimate can be derived, from which disambiguation of the shockwave-derived trajectory estimates can be effected.

Abstract: A system is disclosed comprising a smartphone 2 and an aerosol generation device, such as an electronic cigarette. The smartphone 2 is configured to establish a communicative interaction with the electronic cigarette 4, preferably using a wireless protocol like Bluetooth® so that the devices can exchange data. The smartphone 2 comprises a positioning module, such as a GPS receiver 26, and is adapted to store a position in a data storage unit 28 each time a communicative interaction is established. In this way, the user can retrieve the last stored position from the data storage unit 28 and display it on a map on the smartphone display screen 22 so that they can be assisted in locating the electronic cigarette 4.

Abstract: Disclosed herein are techniques and systems for tracking assets using wireless beacons attached to the assets. In some embodiments, an asset tracking system may receive, from a mobile device, a first device identifier (ID) of a first wireless beacon that is presently associated with a site. At a different time, the asset tracking system may receive, from the mobile device, a second device ID of a second wireless beacon. The asset tracking system may determine whether a time between the receiving of the two device IDs is less than a threshold amount of time, and, if so, the asset tracking system may associate the wireless beacon to the site.

Abstract: Disclosed herein are techniques and systems for tracking assets using wireless beacons attached to the assets. In some embodiments, an asset tracking system may receive, from a mobile device, a device identifier (ID) of a wireless beacon. At a different time, the asset tracking system may receive, from the mobile device, event data indicating that the mobile device is located at a site among a plurality of sites maintained in a data store. The asset tracking system may determine whether a time between the receiving of the device ID and the receiving of the event data is less than a threshold amount of time, and, if so, the asset tracking system may associate the wireless beacon to the site.

Abstract: Disclosed are techniques to determine a position of a user equipment (UE). In an aspect, the UE receives a plurality of positioning reference signals (PRS) from a plurality of cells. The UE determines a plurality of time of arrivals (TOA) of the plurality of PRSs, and prunes the plurality of TOAs based on the plurality of PRSs. The UE then derives a time difference of arrival (TDOA) vector from the pruned TOAs. The TDOA vector includes multiple TOA related measurements of multiple cells. The UE prunes the TOAs such that the cells represented in the TDOA vector are sufficiently geographically dispersed to determine the position of the UE at least in 2D.

Abstract: A pseudo low intermediate frequency (IF) configuration is provided for a receiver having a zero IF radio architecture dedicated for radar detection, in order to reduce false radar detection. Energy from local oscillator leakage is shifted away from DC. After filtering out of the desired sub-channel, the local oscillator leakage energy is suppressed, reducing false radar detection.

Abstract: A radar sensor for use in a vehicle is described. The radar sensor comprising: at least one transmitter and at least once receiver to transmit and receive radar signals of the radar sensor; an acceleration sensor to measure the acceleration of said radar sensor or the chassis of said vehicle; a processor coupled to said acceleration sensor to calculate a tilt in a radar signal projected from said vehicle using said measured acceleration; a memory for storing said calculated radar tilt.

Abstract: The present disclosure relates to an apparatus and a method for detecting a radar mounting angle. The present disclosure provides an apparatus for detecting the radar mounting angle that includes a controller configured to determine a vehicle driving state of the vehicle, select a moving target when the vehicle driving state of the vehicle is determined to be straight driving, store a position of the moving target and generate a moving target driving lane of the moving target based on position information on the moving target, and detect a radar mounting angle of the vehicle using the generated moving target driving lane of the moving target.

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: 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: 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: Techniques for validating data that represents an environment are discussed herein. In examples, the techniques can associate data of an environment with a voxel space including multiple voxels. The techniques can analyze the voxels to identify an error, such as multiple layers for a single surface in an environment, a hole for a location in an environment where a hole does not exist, uneven regions for a smooth surface in an environment, and so on. In some examples, when an error has been identified, an action can be performed, such as displaying a representation associated with the data and an indication of the error, storing an indication of the error in a log file, updating a trajectory for a vehicle, updating the data or a mesh associated with the data, and so on.

Abstract: A measuring apparatus for the three-dimensional geometric acquisition of surroundings by means of a rotating transceiver platform and a multiplicity of transmission channels for emitting pulsed distance measurement beams, wherein in each case a different elevation with respect to a reference plane orthogonal to the rotation axis is scannable with each of the transmission channels. Furthermore, the measuring apparatus comprises a receiving unit having a sensor arrangement of semiconductor photomultiplier sensors, wherein the number of sensors is less than the number of transmission channels, and the transmitting unit and the receiving unit are configured such that at least two of the transmission channels are assigned to a common sensor, which is configured for generating distance measurement data with respect to the at least two transmission channels.

Abstract: An apparatus has an optical phased array producing a far field electro-magnetic field defining a field of view. Receivers collect reflected electro-magnetic field signals characterizing the field of view. A processor is configured to process the reflected electro-magnetic field signals to identify a selected area in the field of view as an area of interest. The processor is further configured to dynamically adjust control signals applied to the optical phased array to produce an updated far field electro-magnetic field with increased electro-magnetic field resolution for the selected area.

Abstract: A Lidar system and method of detecting an object is disclosed. The Lidar system includes a photodetector, a spectrum analyzer and a processor. The photodetector generates an electrical signal in response to a reflected light beam received at the photodetector, the reflected light beam being a reflection of a chirp signal from the object. The electrical signal has a bandwidth the same as a bandwidth of the chirp signal. The spectrum analyzer includes a power divider that partitions the electrical signal into a plurality of channels, an analog-to-digital converter that converts the electrical signal within a selected channel from an analog signal to a digital signal, and a comb filter that provides output from the selected channel from the power divider to the analog-to-digital converter. The processor determines a parameter of the object from the digital signal in the selected channel.

Abstract: A portable communication device implements a position indication method to determine and convey the relative locations of other portable communication devices in a group. In one embodiment, the portable communication devices are equipped with a GPS sensor and the position indication method determines relative locations of devices using GPS location data. In another embodiment, the portable communication devices determine relative locations of devices using the strength of the received signal as a proxy for distance. In some embodiments, the relative location information is conveyed to each portable communication device by modifying the audio signal playback. For example, a 3D audio playback may be used to convey the relative location information. In other embodiments, other non-audible location indication may be provided on each portable communication device.

Abstract: A detection system includes a radar-unit and a controller-circuit. The radar-unit is configured to detect objects proximate a host-vehicle. The controller-circuit is in communication with the radar-unit and is configured to determine a detection-distribution based on the radar-unit. The detection-distribution is characterized by a longitudinal-distribution of zero-range-rate detections associated with a trailer towed by the host-vehicle. The controller-circuit is further configured to determine a trailer-classification based on a comparison of the detection-distribution and longitudinal-distribution-models stored in the controller-circuit. The trailer-classification is indicative of a dimension of the trailer. The controller-circuit determines a trailer-length of the trailer based on the detection-distribution and the trailer-classification.

Abstract: A method (e.g., a method for measuring a separation distance to a target object) includes transmitting an electromagnetic first transmitted signal from a transmitting antenna toward a target object that is a separated from the transmitting antenna by a separation distance. The first transmitted signal includes a first transmit pattern representative of a first sequence of digital bits. The method also includes receiving a first echo of the first transmitted signal that is reflected off the target object, converting the first echo into a first digitized echo signal, and comparing a first receive pattern representative of a second sequence of digital bits to the first digitized echo signal to determine a time of flight of the first transmitted signal and the echo.

Abstract: Some disclosed devices include a plurality of transmitter/receiver pairs configured for transmitting and receiving millimeter wave (mmWave) radar and a control system configured for obtaining, via a first transmitter/receiver pair, a first round-trip time for a first reflection from an object proximate the apparatus. The control system may be configured for obtaining, via a second transmitter/receiver pair, a second round-trip time for a second reflection from the object and for determining a position of the object based, at least in part, on the first round-trip time and the second round-trip time.

Abstract: A method of determining spin parameters of a sports ball, such as spin axis and rotation velocity of a golf ball. The spin axis is determined solely from the trajectory of the flying ball, and the rotational velocity is determined from a frequency analysis of a signal provided by a radar, which signal comprises spectrum traces positioned equidistantly in frequency, which frequency distance relates to the spin velocity.

Abstract: Radar systems are disclosed having phase measures limited to +/??. An optical flow method considers the time derivative of the range with respect to phase (or velocity), and gives an indication of whether the phase is outside the measurable range by comparing the derivatives to forward and reverse wrap thresholds.

Abstract: A harmonic reflector circuit comprising an antenna connected to a non-linear circuit via a matching circuit, wherein the harmonic reflector circuit is configured to receive a signal at a receive frequency (fRX), and configured to transmit said received signal at a transmit frequency (fTX), where the transmit frequency is a multiple of the receive frequency, the harmonic reflector circuit wherein the receive frequency (fRX) is in an interval from a first frequency to a second frequency, where the first frequency is at least 800 MHz; and the second frequency is at least 34 MHz larger than the first frequency; the received signal is transmitted at the transmit frequency (fTX) with an output power (Pout) of at least 70% of the maximum available output power (Pmax).

Abstract: A surroundings detection system for motor vehicles, including multiple sensors which are sensitive to electromagnetic radiation in different ranges of the electromagnetic spectrum, and including associated evaluation modules for locating and/or classifying objects present in the surroundings based on the data supplied by the sensors, including a model module in which a surroundings model is stored which, in addition to the 3D position data of the objects, also contains data about the spectral reflection properties of surfaces of the objects, the model module being capable of providing these data to the evaluation modules.

Abstract: A soil measurement system is provided, comprising a soil surveying device, a radio receiver, a plurality of subterranean antennas, and a processor. The soil surveying device comprises a wireless radio transmitter configured to emit a wireless signal at a predetermined bandwidth in a predetermined spectrum. The plurality of subterranean antennas are in an array electronically connected to the radio receiver and configured to be mounted in a subterranean environment at different depths in the subterranean environment. Each of the plurality of subterranean antennas is configured to receive the wireless signal at a respective point in time. The processor is configured to determine a relative time of flight of the received wireless signal between the plurality of antennas at the respective point in time, and estimate a soil permittivity based on the determined relative time of flight. The measurement system may be applied to materials other than soil, in some examples.

Abstract: A ground control point device includes an SAR wave reflector configured to receive an SAR wave incident from an SAR in an incident direction and to reflect the SAR wave in the incident direction; a GNSS receiver configured to receive a GNSS wave to generate, based on the GNSS wave, time information and positional information indicative of a position of a control point; an SAR wave receiver configured to receive the SAR wave; and a control point data generator/transmitter configured to generate control point data obtained by associating the positional information when the SAR receiver receives the SAR wave with a time instant of reception of the SAR wave that is determined based on the time information, and to transmit the control point data to outside.

Abstract: Driver assistance is provided for parking a vehicle inside a garage with a powered garage door actuating system. During parking of the vehicle in the garage, remote scanning is performed around the vehicle to detect a path of a garage door. While in the parking mode, the garage door path is compared to a vehicle profile. Driver guidance is provided in order to locate the vehicle where the profile and path are non-interfering. In a parked mode, the door is monitored for actuations, and the garage door actuator is automatically commanded to reverse if the actuator is closing the door toward an interfering position with the profile. The vehicle profile may encompass an expansion zone recurrently occupied by a powered vehicle door or tailgate. If the interfering position coincides only with the expansion zone then the command to reverse the actuator is made only if the tailgate is not closed.

Abstract: The method includes: receiving, by an obstacle information processing device (110), description information of n obstacles collected by an obstacle detection data collector (120) for a target transport means, and updating an obstacle information list based on the description information of the n obstacles, to obtain an updated obstacle information list; obtaining, by the obstacle information processing device (110), target area information and non-target area information based on the updated obstacle information list, and sending the target area information and the non-target area information to a laser radar data collector (130); receiving, by the obstacle information processing device (110), a sampling point set collected by the laser radar data collector (130); and finally obtaining, by the obstacle information processing device (110), an obstacle detection result based on the sampling point set and the updated obstacle information list.

Abstract: A survey system including a multibeam echo sounder having a projector array and a hydrophone array in a Mills Cross arrangement uses a multi-component message to ensonify one or more fans to estimate a Doppler velocity.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining a location of a particular object relative to a vehicle. In one aspect, a method includes obtaining sensor data captured by one or more sensors of a vehicle. The sensor data is processed by a convolutional neural network to generate a sensor feature representation of the sensor data. Data is obtained which defines a particular spatial region in the sensor data that has been classified as including sensor data that characterizes the particular object. An object feature representation of the particular object is generated from a portion of the sensor feature representation corresponding to the particular spatial region. The object feature representation of the particular object is processed using a localization neural network to generate the location of the particular object relative to the vehicle.

Abstract: A safety laser scanner for detecting objects in a monitored zone having a light transmitter for transmitting a light beam into the monitored zone; having a light receiver for generating a received signal from the light beam remitted by the objects; having a rotatable deflection unit for a periodic deflection of the light beam to scan the monitored zone in the course of the movement; having an internal reference target that reflects the transmitted light beam within the safety laser scanner to the light receiver to generate a reference signal; and having a control and evaluation unit that is configured to detect objects with reference to the received signal and to check the operability of the safety laser scanner with reference to the reference signal, The control and evaluation unit is here configured to change the sensitivity of the detection in dependence on the reference signal.

Abstract: A distance measurement image pickup apparatus has two measurement periods. In a first distance measurement period, short pulsed light (1T) is irradiated, and exposure is performed in a plurality of exposure periods (A, B, and C) in which exposure timings are shifted. In each exposure period, an exposure gate is opened a plurality of times to perform repetitive exposure, and a first non-exposure period is provided from when a last exposure gate is closed until subsequent pulsed light is irradiated. In a second distance measurement period, long pulsed light (4T) is irradiated, and exposure is performed in a plurality of exposure periods (A, B, and C) in which exposure timings are shifted. In each exposure period, exposure is performed by opening the exposure gate only once, and a second non-exposure period is provided from when a last exposure gate is closed until subsequent pulsed light is irradiated.

Abstract: Various embodiments are generally directed to object tracking using laser emitters and sensors. Light emitting devices may emit laser light that is received by sensor devices including photosensors. The sensor devices may determine a location of the respective sensor device based on the received laser light. The sensors devices may form a wireless mesh network that allows each sensor device to transmit the determined location to a base station.

Abstract: A Lidar system, photonic chip and method of detecting an object. The photonic chip includes a laser and one or more photodetectors. The laser generates a transmitted light beam. The one or more photodetectors are receptive to a reflected light beam that is a reflection of the transmitted light beam from an object and generate an electrical signal as output in response to the reflected light beam signal. An amplifier is configured to amplify a signal related to the reflected light beam to amplify the output signal of the one or more photodetectors. A processor determines a parameter of the object from the amplified output signal.

Abstract: A method may include identifying features in images of a setting captured by cameras associated with a laser scanner at a first location. The features may correspond to elements in the setting. The method may include correlating the features with scan point data associated with the elements. The scan point data may be derived from a scan of the setting by a laser of the laser scanner at the first location. The method may include tracking the features within images captured by the cameras. The images may be captured during movement of the laser scanner away from the first location. The method may include estimating a position and/or an orientation of the laser scanner at a second location based on the tracking of the features and based on the correlating of the features with the scan point data.

Abstract: An apparatus for detecting a fault state of an aircraft is provided. The apparatus accesses a training set of flight data for the aircraft. The training set includes observations of the flight data, each observation of the flight data includes measurements of properties selected and transformed into a set of features. The apparatus builds a generative adversarial network including a generative model and a discriminative model using the training set and the set of features, and builds an anomaly detection model to predict the fault state of the aircraft. The anomaly detection model is trained using the training set of flight data, simulated flight data generated by the generative model, and a subset of features from the set of features. The apparatus deploys the anomaly detection model to predict the fault state of the aircraft using additional observations of the flight data.

Abstract: A positioning device receives multiple positioning signals respectively transmitted from multiple positioning satellites, changes a condition of the positioning satellites to be used in a positioning calculation processing based on a determination of whether a surrounding environment is an environment in which a multipath is likely to occur, and performs the positioning calculation processing by using the positioning signals from the positioning satellites that satisfy the condition.

Abstract: Disclosed are a method and an apparatus for determining a location of a vehicle and a system for controlling driving.

Abstract: A neutron detector that indicates the direction toward a neutron source. The detector is a proton-recoil type of detector, in which two different scintillators are positioned on both sides of a hydrogenous target. Proton recoil signals from the two scintillators indicate whether neutrons arrive from the left, right, or center relative to the detector alignment. Surprisingly high precision can be obtained by orienting the detector so that the counting rates in the two scintillators are equal, at which point the target layer is directly aligned with the source. Disclosed are thick and thin target configurations, versions for discriminating pulses from the two scintillators, options for assembling a multi-detector stack and array, and multiple analysis procedures for optimally locating the neutron source.