Abstract: A battery characterization system includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s) operably coupled to the DSC and the memory. Based on a reference signal, the DSC generates a charge signal, which includes an AC (alternating current) component, and provides the charge signal to a terminal of a battery via a single line and simultaneously to senses the charge signal via the single line to detect an electrical characteristic of the battery based on a response of the battery. The DSC generates a digital signal representative of the electrical characteristic of the battery. The processing module(s), based on the operational instructions, generate the reference signal to include a frequency sweep of the AC component of the charge signal (e.g.

Abstract: A method for calibrating a plurality of current sensors connected in series. The method include determining a temperature difference between the current sensors; sensing temperature values and current values of the respective current sensors at different temperatures and currents; calculating averaged current values of two current sensors based on the current measured values sensed by the respective current sensors; calculating a current regression area for the respective current sensors through measurement points that are dependent on the temperature of the respective current sensors and the deviation of the current values sensed by the respective current sensors relative to one another; and calculating a TCR regression curve or a TCR regression area for the respective current sensors based on a deviation and an intersection curve of the respective current regression areas relative to one another and/or relative to an averaged current regression area and a temperature difference between the current sensors.

Abstract: A method for monitoring the state of a redox flow battery system that includes at least two battery modules connected in series. The method includes the following steps: S1: switching at least one battery module out of the series circuit; S2: discharging at least a partial volume of the electrolyte of the at least one battery module that was switched out of the series circuit in step S1, a potential difference being repeatedly detected, the potential difference being formed between a first potential of the negative electrolyte and a second potential of the positive electrolyte of the at least one battery module that was switched out of the circuit; S3: determining, from the potential difference values detected in step S2, the state of health of the at least one battery module that was switched out of the series circuit in step S1.

Abstract: A battery has an SOC-OCV characteristic having a flat region. When a stage change detecting unit detects an occurrence of stage change during traveling of an electrified vehicle, a discharge current integrating unit calculates a discharge current integrated amount. When external charging is started, a charge current integrating unit calculates a charge current integrated amount until the battery is fully charged. A full charge capacity calculating unit calculates a full charge capacity based on a storage amount at a time of the stage change, the discharge current integrated amount, and the charge current integrated amount.

Abstract: An estimation system includes a power storage device and one or more processors. The one or more processors are configured to execute a charge process of controlling a charge device so as to charge the power storage device, and an estimation process of estimating a full charge capacity of the power storage device. The one or more processors are configured to execute the charge process with an upper limit state of charge of the power storage device set to a value that is more than a first upper limit state of charge when a predetermined condition is met, the first upper limit state of charge being the upper limit state of charge at the time when the predetermined condition is not met.

Abstract: The present disclosure relates to a method for predicting lifespan characteristics of a lithium secondary battery that can reliably predict the lifespan characteristics of a lithium secondary battery, specifically, the mode of variation in cycle capacity in advance.

Abstract: An apparatus and a method for determining a defect of a battery cell are disclosed. The defect determination apparatus according to an aspect includes: a temperature measurement unit configured to measure an aging temperature of the battery cell; a period determination unit configured to determine an aging period of the battery cell; an SOC determination unit configured to measure and determine a state of charge (SOC) of the battery cell at the start of aging; a voltage measurement unit configured to measure open circuit voltages (OCVs) of the battery cell at the start of aging and at the end of aging; and a defect determination unit configured to determine whether the battery cell is defective based on the aging temperature, the aging period, the SOC at the start of aging, the OCV at the start of aging and the OCV at the end of aging.

Abstract: A control device includes a diagnosis unit configured to diagnose a deterioration state of a secondary battery. The diagnosis unit includes: a resistance calculator configured to calculate a direct current resistance and a reaction resistance of impedance components based on an impedance measurement result of the secondary battery; an index value calculator configured to calculate an index value related to the direct current resistance and the reaction resistance; and a deterioration determination unit configured to compare the index value with a determination threshold based on an impedance characteristic at the time of normal deterioration of the secondary battery so as to determine whether a specific deterioration occurs due to charge and discharge of the secondary battery.

Abstract: Embodiments of the present application provide a detection method and detection device for a battery, a battery management system, and a storage medium. The method may include: acquiring a current voltage of a battery; sending a charging request to a charging device, the charging request including a requested voltage, the charging request being used to request the charging device to output the requested voltage to the battery, where the requested voltage may be smaller than the current voltage; acquiring a current of the battery within a duration in which the charging device outputs the requested voltage to the battery; and determining an internal short circuit condition of the battery according to the current.

Abstract: A method for detecting an internal-short-circuit in a battery. The method includes: obtaining a battery-charging standard parameter (S21); obtaining a voltage V0 of a battery when the battery enters a constant-current charging phase (S22); obtaining a voltage difference ?V generated across a charging time frame ?t during constant-current charging of the battery (S23); obtaining a charge current I when the battery has been charged for the time frame ?t (S24); determining an internal short circuit resistance Ri of the battery based on the battery-charging standard parameter, the voltage Vo, the voltage difference ?V, and the charge current I (S25); and determining, based on the internal short circuit resistance Ri of the battery, whether an internal short circuit exists in the battery (S26).

Abstract: A method including measuring, in a buss cable over a plurality of time periods, a voltage, a current, and a temperature. The method also includes determining, using the voltage, the current, and the temperature, a degree to which the buss cable has degraded. The method also includes returning the degree to which the buss cable has degraded.

Abstract: A system and method for measuring a capacitance value of a capacitor are provided. In embodiments, a resistor is coupled to a terminal of the capacitor. A difference in voltage at the terminal between a first time and a second time during a discharge routine of the capacitor is measured. The discharge routine includes sinking a current through a discharge circuit coupled to the resistor from first to second. Integration of a difference in voltage at terminals of the resistor during the discharge routine between the first and second times is also measured. The capacitance value is computed based on the measured difference in voltage, the measured integration, and the resistance value of the resistor. The health of the capacitor is determined based on a difference between the computed capacitance value and a threshold value.

Abstract: A magnetic field measurement apparatus including a magnetic sensor array having magnetic sensor cells capable of detecting magnetic fields in three axial directions arranged in three dimensions, each magnetic sensor cell including a plurality of magnetic sensors that each have a magnetoresistive element and a magnetic flux concentrator arranged at least at one of one end and another end of the magnetoresistive element; AD converters that respectively convert analog detection signals output by the magnetic sensors into digital measurement data; a magnetic field acquiring section that acquires the digital measurement data; a calibration computing section that calibrates the digital measurement data from the magnetic field acquiring section, using at least one of a main-axis sensitivity, cross-axis sensitivities, and an offset; and a gradient magnetic field computing section that calculates a gradient magnetic field using magnetic field measurement data resulting from the calibration of the digital measurement d

Abstract: The present disclosure relates to a magnetic sensor device, including a substrate spanning a plane, a plurality of series-connected TMR resistance elements arranged on the substrate, wherein each of the TMR resistance elements has at least one magnetic tunnel contact and wherein each of the TMR resistance elements has the same reference magnetization. The series-connected TMR resistance elements are arranged and interconnected on the substrate in such a way that an electric current flow direction in the plane relative to the reference magnetization changes at least once along a current path through the series-connected TMR resistance elements.

Abstract: A magnetic sensor device includes a magnetic field converter that receives an input magnetic field input along a first direction and outputs an output magnetic field along a second direction, which is orthogonal to the first direction. A magnetic field detector is provided at a position where the output magnetic field is applied. A magnetic shield shields external magnetic fields along a third direction, which is orthogonal to both the first direction and the second direction. When viewed along the first direction, the magnetic field converter has a shape such that the length in the third direction is greater than the length in the second direction. When viewed along the first direction, the magnetic shield is provided at a position overlapping the magnetic field converter and the magnetic field detector, and the magnetic field transmittance of the external magnetic field is 1˜30%.

Abstract: Some aspects comprise a tuning system configured to tune a radio frequency coil for use with a magnetic resonance imaging system comprising a tuning circuit including at least one tuning element configured to affect a frequency at which the radio frequency coil resonates, and a controller configured to set at least one value for the tuning element to cause the radio frequency coil to resonate at approximately a Larmor frequency of the magnetic resonance imaging system determined by the tuning system. Some aspects include a method of automatically tuning a radio frequency coil comprising determining information indicative of a Larmor frequency of the magnetic resonance imaging system, using a controller to automatically set at least one value of a tuning circuit to cause the radio frequency coil to resonate at approximately the Larmor frequency based on the determined information.

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry is configured to calculate an allowable amount of heat input to a superconducting magnet, the allowable amount being allocated to each of a plurality of imagings scheduled during a target period. The processing circuitry is configured to determine an imaging condition based on the allowable amount in the each of the plurality of imagings.

Abstract: According to some aspects, a portable magnetic resonance imaging system is provided, comprising a Bo magnet configured to produce a Bo magnetic field for an imaging region of the magnetic resonance imaging system, a noise reduction system configured to detect and suppress at least some electromagnetic noise in an operating environment of the portable magnetic resonance imaging system, and electromagnetic shielding provided to attenuate at least some of the electromagnetic noise in the operating environment of the portable magnetic resonance imaging system, the electromagnetic shielding arranged to shield a fraction of the imaging region of the portable magnetic resonance imaging system. According to some aspects, the electromagnetic shield comprises at least one electromagnetic shield structure adjustably coupled to the housing to provide electromagnetic shielding for the imaging region in an amount that can be varied. According to some aspects, substantially no shielding of the imaging region is provided.

Abstract: An assembly for providing a B0 magnetic field for a magnetic resonance imaging (MRI) system, the assembly comprising: a plurality of rods extending along a common longitudinal direction and positioned to form a bore extending along the common longitudinal direction, the plurality of rods including a first rod, the first rod comprising: ferromagnetic segments, each having a net magnetization in a plane that is substantially perpendicular to the common longitudinal direction; and non-ferromagnetic segments.

Abstract: According to one or more example embodiments, a shim apparatus for an MR apparatus includes a specimen holder, the specimen holder including a plurality of MR reference specimens, the MR reference specimens being on the specimen holder; a frame; a shaft, the shaft being mounted on the frame such that the shaft is rotatable about an axis of rotation, the specimen holder being non-rotatably connected to the shaft, the MR reference specimens being spaced apart from the axis of rotation; a drive unit, the drive unit being configured to output a torque, the drive unit being electrical or pneumatic; and a gear unit, the gear unit being configured to transfer the torque output by the drive unit to the shaft and to rotate or swivel the MR reference specimens about the axis of rotation.

Abstract: The present disclosure relates to a shimming device. The shimming device may include at least one supporting component each of which is configured with a plurality of wire groove groups. Each of the plurality of wire groove groups may include a plurality of wire grooves. Each of the plurality of wire grooves may be in a closed shape. The closed shapes formed by the plurality of wire grooves may be nested. The shimming device may further include wires arranged in the wire grooves of the plurality of wire groove groups of the at least one supporting component.

Abstract: A system is described for emitting a radiofrequency field for a magnetic resonance imaging device, including a volumetric antenna that emits a radiofrequency field, a device for homogenizing the radiofrequency field arranged between said volume antenna and a part of the body to be imaged. The device may include a first continuous metal track with an overall length of approximately 0.5 to approximately 1.5 times said wavelength of the radio frequency field. The first metallic track may occupy a surface with a largest dimension ranging between approximately 5% and approximately 15% of said wavelength of the radio frequency field. The first metal track is arranged in a pattern including a plane of symmetry that is normal to the electrical component of the radio frequency field, so as to give the device an electric dipole property including a natural frequency strictly greater than the frequency of the radio frequency field.

Abstract: The present invention discloses the cross-domain network method for magnetic resonance imaging undersampling trajectory optimization in Fourier domain and reconstruction network in image domain.

Abstract: A magnetic resonance (MR) imaging acceleration method is provided. The method includes applying, by an MR system, a pulse sequence having a k-space trajectory of a plurality of blades being rotated in k-space, each blade including a plurality of views, wherein the k-space trajectory has an undersampling pattern in the k-space. The method also includes receiving k-space data of a subject acquired by the pulse sequence, reconstructing MR images of the subject based on the k-space data using compressed sensing, and outputting the reconstructed images.

Abstract: A magnetic resonance (MR) acquisition acceleration method is provided. The method includes, for each acquisition of a plurality of acquisitions, generating an excitation radio frequency (RF) pulse that excites a plurality of slices, applying, to a subject by an MR system, the excitation RF pulse, and acquiring MR signals of the plurality of slices. A number of slices in the plurality of slices is not a power of two, wherein generating an excitation RF pulse further includes modulating a base excitation RF pulse with a different modulation function during each acquisition. A number of acquisitions is equal to the number of slices, and MR signals from each acquisition are algebraic combinations of MR signals of individual slices. The method also includes reconstructing MR images of individual slices based on the MR signals from the plurality of acquisitions, and outputting the reconstructed images of the individual slices.

Abstract: Techniques for compensating for presence of eddy currents during the operation of a magnetic resonance imaging (MRI) system in accordance with a pulse sequence, the pulse sequence comprising a gradient waveform associated with a target gradient field. The techniques include: compensating for presence of eddy currents during operation of the MRI system at least in part by correcting the gradient waveform using a nonlinear function of a characteristic of the gradient waveform to obtain a corrected gradient waveform; and operating the MRI system in accordance with the corrected gradient waveform to generate the target gradient field.

Abstract: A system and method of mapping and correcting the inhomogeneity of a magnetic field within an object using an Magnetic Resonance Imaging (MRI) system where there is a single dominant resonance. The method includes acquiring at least three MRI images, each at different echo times (TE). At least two ?TE images (?TEi=1 . . . N) are generated based on the at least three MRI images, wherein the subscripts I=1 N refer to images with sequentially increasing ?TE times. Aliasing in the ?TE1 image is permitted. The ?TE times of ?TE1 and ?TE2 are set such that the alias points at which wrapping occurs in ?TE1 does not overlap with the alias points of ?TE2. Each ?TE image is unwrapped. A final B0 map is set to the unwrapped ?TEN image.

Abstract: A method and tracker for determining the location of an object, such as a parcel or luggage. The tracker periodically transmits a wireless access point beacon comprising SSID (network name) and a MAC address, in accordance with an IEEE 802.11 standard, has a power storage device, and an energy harvesting module. A server monitors data from 3rd party mobile devices regarding the locations of wifi beacons, and the user is informed of the relevant location if the beacon of the tracker is uploaded to the server. When the tracker is moved and/or it comes into range of one of the wireless portable devices, the user is informed of its location. This enables indefinite tracking especially in urban areas, worldwide.

Abstract: An iris cap for a beacon is cylindrical in shape with defined wall length to create such an iris for the intended application. One application for example, an axicon will create defined output angle of emission dependent on the source emitter’s output angle and the axicon angle. Given the cost and difficulty of reproducing several MWIR/LWIR beacons for specific applications of maximum positive output angle, the Iris Cap introduces a simple solution. The Iris Cap can create specific maximum angles to reduce risk of over exposure of the beacon, simply by attaching the Iris Cap to the location of the emission with a countersunk screw.

Abstract: A method for obtaining the direction of a signal incoming to a communication device is provided using a modal antenna that has multiple modes corresponding to multiple radiation patterns with a single feed.

Abstract: A tracking device broadcasts beacon signals that are separated in time by broadcast intervals. The tracking device determines the broadcast intervals based on a behavior model. The behavior model specifies one or more conditions, such as times of day within a 24-hour day, and associates a usage probability with each condition. A higher usage probability causes the tracking device to broadcast beacon signals at shorter broadcast intervals. A mobile device in communication with the tracking device can reconfigure the behavior model, either by modifying portions of the behavior model or by replacing the behavior model with a different behavior model. This allows the behavior model to adapt to different circumstances, such as different usage patterns during weekdays, weekends, and vacations.

Abstract: Acoustic signals from an acoustic event are captured via sensing nodes of sensor group(s) that comprise a group of sensing nodes at a location comprising spatial boundaries. Each of the sensing nodes comprise a sensor area. Each of the sensor group(s) is based on: range limits of each of the sensing nodes; shared sensing areas of the sensing nodes; and intersections between the sensor area for each of the sensing nodes and the spatial boundaries. Solutions(s) are generated by processing the acoustic signals. The solution(s) indicate the location of the acoustic event. A strength of solution compliance value for at least one of the solution(s) is determined. A refined solution is generated employing: sensor contributions of sensing nodes; and the strength of solution compliance value with the spatial boundaries and at least one of the solution(s). A report is created comprising the location of the acoustic event.

Abstract: A receiving unit is disclosed, including at least three receivers, each configured to receive an ultrasonic signal with a wavelength ? from the transmitting unit. A first receiver is arranged at a distance of at most one half wavelength ?/2 of the ultrasonic signal from a second receiver and from a third receiver. The at least three receivers are arranged in one plane. A processor is configured to determine the respective time-of-flight from the ultrasonic signal received at each of the at least three receivers. The respective time-of-flight is a time that the ultrasonic signal requires from the transmitting unit at a defined start time to the respective receiver. The processor is further configured to determine the three-dimensional position and/or direction of the transmitting unit from the determined times-of-flight and the arrangement of the at least three receivers.

Abstract: There is provided a determination device comprising a determination section configured to determine an area where a portable device is positioned, on a basis of wireless communication between a plurality of first wireless communication devices disposed at different portions in a target space where a plurality of areas is defined and a second wireless communication device installed in a portable device, in conformity with a designated communication standard, wherein the determination section determines the area where the portable device is positioned, by using different determination expressions depending on the respective first wireless communication devices, each of which has successfully calculated an RSSI with regard to a signal received from the second wireless communication device through wireless communication compliant with the designated communication standard and a determination target area.

Abstract: This document describes a client-server approach for indoor-outdoor detection of an electronic device, and associated systems and methods. A server (104) collects crowdsourced information (140) from devices that detected a plurality of access points. An electronic device (102), performing a wire-less-network scan, detects access points (122) within range and detects sensor data (126) from other sensors (124). The electronic device (102) transmits such information to the server (104). The server accesses the crowdsourced information (140) to determine, per access point (122) detected in the scan, a percentage of total detections of the access point that are accompanied by a GPS signal of a device that detected the access point and an RSS value below which no such GPS signal accompanies the detections.

Abstract: Examples of systems and methods described herein may be used to track a tagged object through a scene. Techniques are described herein to calculate a position of the tag using wireless communication with multiple anchor devices. In some examples, the anchor devices may be self-localizing, e.g., they may dynamically determine their position and relationship to one another. In some examples, position of a tag may be calculated by calculating multiple candidate positions using different localization techniques—such as geometric localization techniques and/or optimization-based techniques. An error may also be identified associated with each candidate position. A final position may be determined for the tag based on the errors associated with the candidate positions (e.g., the candidate position with the smallest error may be utilized as the position, e.g., the determined position, of the tag).

Abstract: Methods and systems related to neural networks or other function approximators operate for training a neural network is provided, or another function approximator, for inferring a predetermined time of arrival of a predetermined transmitted signal on the basis of channel-impulse-responses, CIRs, of transmitted signals between a mobile antenna and a fixed antenna, the method having: obtaining a channel impulse response condition characteristic, CIRCC, descriptive of channel impulse responses of transmitted signals associated with mobile antenna positions within a reach of the fixed antenna; generating, by simulation, a training set of simulated CIRs which are associated with different times of arrival in one or more simulated scenes, and which fit to the CIRCC; training the neural network, or other function approximator, using the simulated CIRs and the different associated times of arrivals to obtain a parametrization of the neural network, or other function approximator, associated with the CIRCC.

Abstract: A method for estimating a time of arrival based on non-contiguous spectrums and an apparatus are provided. The method includes: receiving a plurality of signals from a transmit end on a plurality of frequency bands; determining, based on the plurality of signals, channel frequency responses CFRs of the frequency bands corresponding to the plurality of signals; determining a CFR of full bandwidth based on the CFRs of the frequency bands corresponding to the plurality of signals, where the full bandwidth includes the plurality of frequency bands; and determining a time of arrival estimate based on the CFR of the full bandwidth, where the time of arrival estimate is used to determine location information of a terminal device.

Abstract: There is provided a determination device comprising a determination section configured to determine an area where a portable device is positioned, on a basis of wireless communication between a plurality of first wireless communication devices installed at different portions of a mobile object and a second wireless communication device installed in a portable device, in conformity with a designated communication standard, wherein the determination section determines the area where the portable device is positioned, by using different determination expressions depending on the respective first wireless communication devices, each of which has successfully calculated an RSSI with regard to a signal received from the second wireless communication device through wireless communication compliant with the designated communication standard and a determination target area.

Abstract: An integrated photonics millimeter wave (MMW) radar communication system based on analog phase modulation scheme includes an integrated photonics MMW radar communication signal transmitter, a radar receiver, and a communication receiver. The transmitter includes a radar communication signal analog phase modulation module, an optical frequency comb (OFC) module, an electro-optic modulator (EOM), an optical shaping filter, an optical power divider, a photoelectric detector, an electric power amplifier, and a transmitting antenna that are cascaded sequentially. The radar receiver includes a radar receiving antenna, an electric low-noise amplifier (LNA), an optical phase modulator, an optical bandpass filter (BPF), a low-speed photoelectric detector, an electric low-pass filter, and a low-speed oscilloscope that are cascaded sequentially.

Abstract: A method for transmitting data from an ultrasonic sensor to a computer system includes forming a feature vector signal from an electric reception signal; recognizing signal objects in the reception signal and classifying the signal objects according to predetermined signal object classes. The signal objects are forms or sequences of forms. At least one object parameter allocated to the signal object and one symbol for the signal object class are allocated to each signal object, or for each signal object, at least one signal object parameter and a symbol object are determined. The method further includes transmitting the symbol and the at least one signal object parameter to the computer system as data of a recognized signal object. One of the forms in the signal object belonging to the signal object class includes a peak, and one of the transmitted signal object parameters is an amplitude of the peak.

Abstract: A power control unit is provided that is configured to generate a supply voltage control signal for controlling a supply voltage of a radar power amplifier, which is configured to receive an input signal and to output a radar transmit signal. The power control unit is configured to receive a first information signal indicative of a transmit power of the radar transmit signal and a second information signal indicative of timing information of the input signal, and generate the supply voltage control signal such that the supply voltage of the radar power amplifier is set to a supply voltage value for a duration of time.

Abstract: A radar device includes a suppression band variable filter that, while a circulator outputs any one transmission signal out of a plurality of transmission signals to an antenna, and the antenna transmits the transmission signal, suppresses a signal of the same frequency channel as a frequency channel of the transmission signal, and passes a signal of a frequency channel different from the frequency channel of the transmission signal.

Abstract: Provided in the present disclosure are a radar sensor system, and a modulation device and method thereof. The radar sensor system includes a plurality of groups of radar sensors, and each radar sensor has a serial number corresponding to an order thereof in the group. The modulation device is configured to perform modulation control on the plurality of groups of radar sensors, such that the radar sensors in the same group transmit radar signals by different time modulation and the radar sensors with the corresponding serial numbers in different groups transmit radar signals by the same time modulation.

Abstract: A linear chirp radar system, apparatus and method use a radar control processing unit to control an LFM radar front end which generates analog-to-digital (ADC) sample signals from one or more target return signals received in response to transmitted linear chirp radar signals, where the radar control processing unit is connected and configured to mitigate range migration by directly filtering the ADC samples using a modified Doppler filter that is tuned to fast-time scaled, slow-time frequencies to generate a focused ADC Doppler cube, and by applying a Fourier Transform on each Doppler cell in the focused ADC Doppler cube to generate a focused range-Doppler cube.

Abstract: The invention discloses a weather radar levelness automatic measuring system which comprises an on-duty device, an antenna pedestal levelness measuring device, a feed source levelness measuring device and a wireless communication module. The on-duty device is used to send an awakening signal at set time; the antenna pedestal levelness measuring device is used to start measuring the antenna pedestal levelness in different directions when the pitch angle is 0° according to the awaking signal; the feed source levelness measuring device is used to start receiving a radar sidelobe radiation signal according to the awaking signal and calculating the feed source levelness according to the radar sidelobe radiation signal; and the wireless communication module is used to send the antenna pedestal levelness and the feed source levelness in different azimuths to an upper computer for display.

Abstract: A method for predicting a false positive detection by a radar sensor includes simulating a radar signal, determining a plurality of reflected radar signal rays based on the simulated radar signal and data regarding at least one vehicle component that may be a source of a false positive detection based on received reflected radar signal rays, selecting detectable rays from the reflected radar signal rays, determining an energy level for each detectable ray based on a reflectivity of the at least one vehicle component, clustering at least some of the detectable rays based on a distance between a reflection origin location of at least two of the detectable rays being within a predefined range, determining an energy level of clustered detectable rays, and determining a false positive based on the determined energy level of the clustered detectable rays being above an energy threshold.

Abstract: This description relates to a method for suppressing intermodulation distortion in a digital output signal of a radar device. In one implementation, the method includes—in a first mode—feeding a test signal into a receiving channel, the test signal is fed to a mixer contained in the receiving channel and is downconverted to a baseband, a baseband signal that includes intermodulation products on account of a nonlinearity of the transfer characteristic of the receiving channel being provided at the mixer output. The digital output signal is generated based on the baseband signal. The method further includes—in the first mode—determining an intermodulation product and, on the basis thereof, ascertaining a parameter of a model characterizing the nonlinearity. In a second mode, in which an antenna signal is fed to the mixer—suppressing the intermodulation product in the digital output signal based on the parameter and the baseband signal.

Abstract: An active sensor system (1) has a first and a second emitter unit (2, 2?), as well as a detector unit (3, 3?) and a computing unit (4). The emitter units (2, 2?) are configured to emit respective measurement signals into corresponding emission spatial regions (A1, A2). The detector unit (3, 3?) is configured to generate at least one detector signal on the basis of reflected portions of the measurement signals, and the computing unit (4) is configured to generate a measurement data set on the basis of the at least one detector signal. The computing unit (4) is configured to identify at least one section (T1, T1?, T2) that is shaded with respect to at least one of the emitter units (2, 2?). The computing unit (4) is configured to generate the measurement data set taking into account the section (T1, T1?, T2) and/or to generate correction data for correcting the measurement data set.

Abstract: A method to compensate for phase impairments in a light detection and ranging (LIDAR) system includes estimating one or more phase impairments in the LIDAR system using a digitally-sampled reference signal to produce one or more estimated phase impairments and performing one or more corrections on one or more phase impairments in a digitally-sampled target signal based on the one or more estimated phase impairments.