Abstract: Apparatus and associated method for unambiguously evaluating high-bandwidth, rapidly changing analog range data in real time using low-cost components that allow detection of the signal of interest using a sampling rate that is lower than the Nyquist rate required to directly evaluate the full range data bandwidth.

Abstract: A frequency regulation method and apparatus is applied to an insulation impedance detection apparatus in a direct current power system, and relates to the field of security monitoring technologies of a direct current electrical system. The method includes: collecting sampling voltages at a sampling point for at least three time points; determining a voltage frequency regulation manner based on the sampling voltages, obtained through sampling, at the at least three time points; and then regulating a voltage frequency of a power supply according to the determined voltage frequency regulation manner. The voltage frequency of the power supply can be regulated based on the at least three sampling voltages obtained through sampling. Therefore, the insulation impedance detection apparatus reduces insulation impedance detection duration while ensuring accuracy of measured insulation impedance.

Abstract: A measuring system comprising a measuring antenna, a link antenna and a positioning system is provided. The measuring antenna is configured to perform over the air measurements on a device under test. The link antenna is configured to perform communications with the device under test. The positioning system comprises a first rotational positioner, configured to rotate the device under test around a first axis. The positioning system further comprises a second rotational positioner, configured to rotate the measuring antenna around a second axis. The first rotational positioner is connected to the link antenna, and is thereby configured to rotate the link antenna around the device under test around the first axis.

Abstract: Provided are a non-metallic position sensor for electromagnetic compatibility testing, a device and a system for automatic antenna positioning. The non-metallic position sensor includes a cylinder body, a piston, and a piston rod; a side wall of a cylinder body lower chamber is provided with a first radial air hole, a second radial air hole arranged on the lower end of the first radial air hole, and a third radial air hole arranged axially symmetrically with the first radial air hole; when the piston rod moves to a first position, the first radial air hole is communicated with the third radial air hole, the non-metallic position sensor send a first air pressure signal outwards; when the piston rod moves to a second position, the first radial air hole is communicated with the second radial air hole, the non-metallic position sensor send a second air pressure signal outwards.

Abstract: An apparatus for detecting a condition or authenticity of one or more electronic devices includes an enclosure having an antenna integrated therewithin, a fixture mounted within a hollow interior of the enclosure, the fixture being configured to receive the one or more electronic devices and connect one or more signals to each of the one or more electronic devices and a sensor and controller assembly connected to the antenna and configured to process a signature of an emission of a radiofrequency (RF) energy from of one or more electronic devices having the one or more signals connected thereto.

Abstract: A radiofrequency (RF) source for use in testing radiofrequency interference (RFI) stresses has an RF transmitter emitting an electromagnetic field corresponding to at least one frequency, power, and state-of-polarization (SOP). Drives rotate the transmitter to emit, in a temporally continuous fashion, RF power and RF state of polarization from the RF transmitter in, respectively, every direction and every SOP orientation within an RF reflective structure in order to effectively characterize RFI stresses on said equipment to be tested.

Abstract: In the present invention, the connection between an external power supply and a unit for detecting welding of a relay is disestablished at least when a short circuit is detected, thereby preventing the short circuit from being falsely detected in the event that the short circuit and the welding of the relay can both be detected. A device for detecting welding of a relay detects welding of a relay provided to a path via which a cell is charged by an external power supply. Welding of a power-supply-side relay or a ground-side relay is detected on the basis of a current flowing disproportionately more toward the external power supply than the power-supply-side relay or ground-side relay when a control unit has deactivated the power-supply-side relay or ground-side relay during an interrupting in charging. A disconnecting switch establishes or disestablishes the connection between the external power supply and a weld-detection switch.

Abstract: An indicating circuit for a switching power supply is provided. An LED and a resistor are connected in series, and then are connected in parallel with a capacitor, and the parallel-connected circuit and a diode are connected in series in the same direction, and then are connected in parallel with an inductor to form the indicating circuit. The cathode of the indicating circuit is a terminal 1, and the anode of the indicating circuit is a terminal 2.

Abstract: A system, method, and battery control module for detecting negative contactor status of a battery, such as a high voltage vehicle battery, is disclosed. The method includes applying a constant current to a bipolar transistor element having a base, an emitter, and a collector, wherein the base is electrically connected to a first resistor and an analog-to-digital converter, the collector being electrically connected to a second resistor and a diode. A collected current is delivered by the collector, and the method includes injecting the collected current through the second resistor and the diode and into a negative contactor of a battery. The method also includes determining a resistance across the negative contactor of the battery. The system may include a battery having a negative contactor, the negative contactor having a switch side, and a battery control module in communication with the battery.

Abstract: An example embodiment of the present disclosure provides a method of diagnosing root causes of anomalous AMI meter data. The method can include receiving meter data, identifying anomalous data in the meter data, comparing the anomalous data to a database of known root causes, and generating a work order if there is a known root causes of the anomalous data. The method can also include requesting manual review of anomalous data without a known root cause and receiving input indicating a discovered root cause. The method can add the discovered root cause to the database of known root causes.

Abstract: A semiconductor device with at least one embedded photodetector is disclosed. The at least one photodetector is embedded in a hot carrier injection (HCI) area, and detects a quantity of emitted photons. Further, the photodetector triggers a warning when the photodetector detects a number of photons greater than a threshold number of photons. Additional embodiments are directed to a method of detecting HCI. The method includes embedding a photodetector in a power semiconductor device, setting at least one threshold number of photons, detecting photons, determining a number of photons, determining when the number of photons is above a threshold number of photons, and generating a warning. When the number of photons is above the threshold, the warning is triggered. Further embodiments are directed to an article of manufacture comprising at least one semiconductor device with at least one photodetector embedded in an area predicted to experience HCI.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for testing millimeter wave devices. The method includes determining a reference antenna response of the DUT for at least one antenna of a test chamber, generating one or more fading coefficients for the at least one antenna based on the determined reference antenna response, applying the generated one or more fading coefficients to at least one signal, and transmitting the at least one signal via the at least one antenna to the DUT in the test chamber.

Abstract: Among other things, one or more techniques or systems for evaluating a tiered semiconductor structure, such as a stacked CMOS structure, for misalignment are provided. In an embodiment, a connectivity test is performed on vias between a first layer and a second layer to determine a via diameter and a via offset that are used to evaluate misalignment. In an embodiment, a connectivity test for vias within a first layer is performed to determine an alignment rotation based upon which vias are connected through a conductive arc within a second layer or which vias are connected to a conductive pattern out of a set of conductive patterns. In this way, the via diameter, the via offset, or the alignment rotation are used to evaluate the tiered semiconductor structure, such as during a stacked CMOS process, for misalignment.

Abstract: A display device and a method for detecting an ESD phenomenon are provided. The method including: encoding image data according to an encoding operation to generate a check code; sending the image data and the check code to a receiver by a transmitter, and obtaining a receiving image data and a receiving check code by the receiver; encoding the receiving image data according to the encoding operation to generate a verification check code; and determining whether the ESD phenomenon is occurred by comparing the check code and the verification check code.

Abstract: A substrate mounting table, which is used for an electrical characteristics inspection of a semiconductor device formed on a substrate, includes a plurality of layers partitioned in a direction perpendicular to a mounting surface on which the substrate is mounted, wherein coolant paths are formed on at least two layers among the plurality of layers, each of the coolant paths having an inlet port and an outlet port located in a circumferential portion of a corresponding one of the at least two layers.

Abstract: A pattern defect detection method capable of detecting a pattern defect of a semiconductor integrated circuit with higher accuracy is disclosed.

Abstract: An apparatus for performing an electrical test at a device is described. In one general implementation, an apparatus may include a memory, a receiver, and a processor. The receiver is configured to receive a test signal, convert the test signal into a digital test signal (bit stream) and store the digital test signal in the memory. The receiver identifies when a pre-defined number of bits of the bit stream are available in the memory. The processor is configured to perform a logic operation on the bit stream and a reference signal, generate a test result based on the logic operation, and determine whether the test result satisfies a condition. In some implementations, the processor may be configured to synchronize the digital test signal with the reference signal prior to performing of the logic operation.

Abstract: A method and interface circuit for testing an electronic device with a single logic pin is disclosed. The comprises forming a data stream having three level bands; inputting the data stream through a single logic pin; and decoding the data stream to identify a scan_in signal, a scan_shift_enable signal and a scan_out signal and returning contemporaneously a scan_out signal as an output through the same logic pin. The interface circuit includes a decoder connected to the single logic pin.

Abstract: An integrated circuit including a first multiplexor configured to receive one of a plurality of diagnostic signals from circuitry under test (DUT), the first multiplexor responsive to diagnostic signals provided thereto and configured to selectively output one of the diagnostic signals in response to a control signal, a second multiplexor configured to receive one of a plurality of reference signals from one of a plurality of nodes on a reference circuit, the second multiplexor configured to selectively output one of the diagnostic signals in response to a control signal, and a comparator configured to compare the diagnostic signal elicited from the first multiplexor with the reference signal elicited from the second multiplexor, the comparator further configured to output the result of the comparison between the diagnostic signal and the reference signal.

Abstract: One embodiment describes a method that includes determining, using a control circuitry, temperature of a switching device before a make operation by applying a measurement current to an operating coil of the switching device, wherein the measurement current is insufficient to make the switching device; and determining voltage at the operating coil when the measurement current is applied, in which the voltage at the operating coil is directly related to the temperature. The method further includes determining, using the control circuitry, when to apply a pull-in current to the operating coil to close the switching device based at least in part on the voltage at the operating coil, such that the switching device makes at a desired time.

Abstract: A system detects and/or predicts metal ion plating events of a metal ion energy storage device. The system includes an optical sensor disposed internally within or externally on a metal ion energy storage device wherein the optical sensor has an optical output that changes in response to strain within a metal ion energy storage device. A current sensor senses current through the metal ion energy storage device. Plating detection circuitry measures a wavelength shift in the optical output of the optical sensor and estimates a state of charge (SOC) of the metal ion energy storage device based on the current. An expected wavelength shift is determined from the estimated SOC. A plating event can be detected and/or predicted based on the difference between the expected wavelength shift and the measured wavelength shift.

Abstract: The present invention is to improve the estimation accuracy of an SOC of a storage element. A storage element management device disclosed in the present description is a battery management device 50 that determines an SOC range indicating a state-of-charge of a secondary battery 30, and has a constitution including a central processing unit 61 that sets an overlapping range between an SOC range (i) R1, determined by a current integration method, and an SOC range (v) R2, determined by a voltage reference method in a stage where the SOC range (i) R1 is determined by the current integration method, as a new SOC range R3.

Abstract: A voltage monitoring system having a microcontroller with an analog-to-digital converter with a first channel, and a memory device is provided. The microcontroller includes a monitoring application and a hardware abstraction layer. The monitoring application sends a first encoded channel number to the hardware abstraction layer. The hardware abstraction layer determines a first channel number based on the first encoded channel number, and obtains a measured voltage value associated with the first channel number. The hardware abstraction layer sends a second encoded channel number and the measured voltage value therein to the monitoring application. If the first encoded channel number is equal to the second encoded channel number, then the monitoring application stores the measured voltage value in the memory device.

Abstract: Methods and systems for predicting an unknown voltage of a battery corresponding to a future current demand for at least one time instant. The method including determining parameters of a first joint Gaussian distribution of a set of historical values of the voltage prediction of the battery from a set of historical measured physical quantities of the state of the battery stored in the memory. Determining a second joint Gaussian distribution of the unknown voltage and the set of historical values of the voltage prediction of the battery, based on a present measured physical quantities of the battery, the set of historical measured physical quantities and the determined parameters of the first joint Gaussian distribution. Determining a mean and a variance of an unknown voltage of the battery from the second joint Gaussian distribution, to obtain the predicted unknown voltage of the battery.

Abstract: A method for determining a State of Health (SoH) of a power source of a portable device involves extracting a start voltage value of an examined power source; activating one or more hardware components of the portable device by a software, to increase the current consumption of the device, identifying a voltage drop rate of the examined power source and comparing a calculated voltage drop rate to pre-calculated threshold values stored on a database of a main server. A system for executing the method is also disclosed.

Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.

Abstract: This secondary battery degradation determination device includes: a voltage measurement section to measure DC voltage between terminals of a battery; a discharging circuit composed of a current limiting resistor and a switch and connected in parallel to the battery; a discharge management section; and a degradation determination section. The discharge management section starts discharge when DC voltage is higher than an upper limit value, monitors DC voltage during this time, and stops the discharge when the DC voltage has become lower than a lower limit value. Battery DC voltage is compared with a set value of voltage, and when the battery DC voltage is higher than this set value, the battery is discharged. The degradation determination section measures a discharge frequency in the discharging circuit caused by control by the discharge management section, and determines degradation of the battery on the basis of the discharge frequency.

Abstract: A diagnostic system for a DC-DC voltage converter is provided. An analog to digital converter measures a first low voltage level at a low voltage terminal of a DC-DC voltage converter and generates a first low voltage value based on the first low voltage level. A first buck mode monitoring application sets a first buck mode status flag equal to a first fault value when the first low voltage value is greater than a first maximum voltage value. A first buck mode diagnostic handler application transitions each of the high voltage switch and the low voltage switch to an open operational state when the first buck mode status flag is equal to the first fault value.

Abstract: A magnetic sensor circuit includes a first type electromagnetic conversion element which supplies antiphase signals corresponding to the intensity of a magnetic field in a first direction, a second type electromagnetic conversion element which supplies antiphase signals corresponding to the intensity of a magnetic field in a second direction, a switch circuit which controls a current supplied from a current source to the first and the second type electromagnetic conversion elements, and a common mode feedback circuit which determines a midpoint voltage between the first and the second type electromagnetic conversion elements. The common mode feedback circuit performs a feedback operation to thereby set an output common voltage of the first type electromagnetic conversion element higher than the preset reference voltage and set an output common voltage of the second type electromagnetic conversion element lower than the preset reference voltage.

Abstract: A chemically sensitive Hall device having a substrate; a chemically sensitive layer arranged on the substrate and configured to operably interact with atoms or molecules of a gaseous or liquid fluid; first electrodes connected to the chemically sensitive layer and configured to feed a sensor current through the chemically sensitive layer along a first direction; and second electrodes connected to the chemically sensitive layer and configured to tap a Hall voltage at the chemically sensitive layer along a second direction.

Abstract: In a method and apparatus for determination of phase distributions in MR imaging, a measured phase distribution of the region of interest is combined with at least one second phase value to form a combination-phase distribution, wherein the phase values of the combination-phase distribution are restricted to a defined presentation interval. A correction-phase distribution is generated, based on a known magnetic field distribution in the region of interest. The phase values thereof are not restricted to the defined presentation interval. A corrected combination-phase distribution is generated using the correction-phase distribution and the combination-phase distribution, in which the phase values are restricted to the defined presentation interval. An absolute combination-phase distribution is generated from the corrected combination-phase distribution, in which the phase values are not restricted to the defined presentation interval.

Abstract: A cooling system is provided. The cooling system is associated with a dynamic nuclear polarization system and configured to cool a sample to a temperature suitable for dynamic nuclear polarization to be carried out on the sample while the sample is in the cooling system. The cooling system includes a cryogenic chamber that includes a cryogenic fluid. The cooling system also includes a removable sample sleeve insertable within a portion of the cryogenic chamber. The removable sample sleeve is configured to define a sample path for the sample within the cryogenic chamber that is isolated from other parts of the cooling system.

Abstract: A magnetic resonance signal detection module includes an insulator block having a coil mounting section including a through hole serving as a detection hole into which a sample container is inserted. A low-frequency coil is provided on an inner surface of the through hole. A high-frequency primary resonator is embedded in the coil mounting section so as to surround the low-frequency coil.

Abstract: According to some aspects, a magnetic resonance imaging system comprising a B0 magnet configured to produce a B0 magnetic field for the magnetic resonance imaging system, the B0 magnet comprising at least one first B0 magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, at least one second B0 magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, wherein the at least one first B0 magnet and the at least one second B0 magnet are arranged relative to one another so that an imaging region is provided there between, a surface configured to support a patient anatomy within the imaging region, and a positioning member coupled to the B0 magnet and configured to allow the B0 magnet to be tilted to position the planar surface at a corresponding incline.

Abstract: Provided is a shimming method performed by a magnetic resonance imaging (MRI) apparatus, the shimming method including applying a magnetic field and a high frequency to an object through a bore of the MRI apparatus including at least one magnet and an RF coil and obtaining a static magnetic field map corresponding to the magnetic field formed in the bore; performing shimming using a plurality of shim channels based on the static magnetic field map; receiving a free induction decay (FID) signal from the RF coil; and determining a state of the magnetic field based on the FID signal and controlling whether to stop shimming based on the determined state.

Abstract: Systems and methods for magnetic field-dependent relaxometry using magnetic resonance imaging (“MRI”] are provided. Relaxation parameters, including longitudinal relaxation time (“T1”) and transverse relaxation time (“T2”), are estimated from magnetic resonance signal data acquired at multiple different magnetic field strengths using the same MRI system. By measuring these relaxation parameters as a function of magnetic field strength, T1 dispersion data, T2 dispersion data, or both, are generated. Based on this dispersion data, quantitative physiological parameters can be estimated. As one example, iron content can be estimated from T2 dispersion data.

Abstract: A method uses an artificial neural network (ANN) to automatically produce a magnetic resonance (MR) pulse sequence. A first MR signal corresponding to a first tissue and a second MR signal corresponding to a second tissue are identified. An RF pulse to be applied to the first and second tissues is selected. Based on at least the first MR signal, the second MR signal, and the RF pulse, an updated first MR signal and an updated second MR signal are determined. A difference is computed between the updated first MR signal and the updated second MR signal. The difference is added to an accumulated difference. The RF pulse selecting, updated first and second MR signal determination, difference computation and adding are repeated. The ANN is controlled to use reinforcement learning to select the MR imaging pulse sequence based, at least in part, on the accumulated difference.

Abstract: Described here are systems and methods for producing high-resolution three-dimensional (“3D”) relaxation parameter maps by calibrating high-resolution 3D magnetic resonance images. As one example, high-resolution longitudinal relaxation time (“T1”) maps can be generated based on images acquired using a T1-weighted pulse sequence, and as another example high-resolution transverse relaxation time (“T2”) maps can be generated based on images acquired using a T2-weighted pulse sequence. The high-resolution images can be calibrated, for example, using a lower resolution single slice relaxation parameter map. The methods described here utilize high-resolution 3D scans and low-resolution relaxation parameter maps that are commonly available on MRI systems. The calibration is a post-processing step used to create the high-resolution 3D relaxation parameter maps from these two types of scans.

Abstract: A magnetic resonance system is operated in a preliminary examination so as to acquire magnetic resonance data while an object undergoing investigation is in a first position relative to the scanner of the magnetic resonance system. Using the first magnetic resonance data, or image data derived therefrom, a processor reconstructs an image of the object. The image has a distortion in relation to the object. The processor presents the image to a person operating the system at a display device. The processor reconstructs the image such that the distortion is determined by a target position that is independent of the position of the object.

Abstract: A system includes a storage device storing a set of instructions and a processor in communication with the storage device. When executing the instructions, the processor is configured to cause the system to obtain one or more scanning parameters. The processor is also configured to cause the system to determine a first flip angle of a first fat suppression RF pulse and a second flip angle of a second fat suppression RF pulse. The processor is further configured to cause the system to scan a subject by applying an RF pulse sequence including the first fat suppression RF pulse, the second fat suppression RF pulse, and an excitation RF pulse. The processor is also configured to cause the system to receive magnetic resonance signals based on the scanning of the subject and reconstructing an image of the subject based on the MR signals.

Abstract: A system and method for controlling a magnetic resonance imaging (MRI) system to create magnetic resonance (MR) angiograms of a subject. The method includes controlling the MRI system to acquire MR data by performing a pulse sequence that includes at least one set of modules formed by a first ?/2 module, a (readout, ?)n module, a second ?/2 module. In this case, ? denotes a radiofrequency (RF) flip angle and n denotes a number of times that the set of modules is repeated. The method also includes reconstructing an MR angiogram of the subject from the MR data.

Abstract: Some implementations provide a MRI system configured to: access data encoding an input gradient waveform that would otherwise be used on a gradient sub-system of the MRI system to generate a gradient that corresponds to perturbations to the substantially uniform magnetic field; access data encoding a forward impulse response function and an inverse impulse response function, both characterizing a gradient generated from a target impulse input; pre-emphasizing the input gradient waveform by using both the forward impulse response function and the reverse impulse response function; and drive the gradient sub-system using the pre-emphasized gradient waveform such that distortions to the gradient caused by eddy currents within the gradient sub-system are substantially removed while radio-frequency (RF) samples for reconstructing an MRI image are being acquired from a grid that is substantially identical to when gradient sub-system is driven using the input gradient waveform.

Abstract: A magnetic resonance imaging system (10) comprises a magnetic gradient coil system (22) configured for generating gradient magnetic fields by providing a predetermined temporal electrical current profile to at least one magnetic gradient coil in accordance with a desired magnetic resonance examination mode. An additional device (50), which is not part of the original magnetic resonance imaging system (10) as such, is intended to be positioned within an inner region (44) of the magnetic resonance imaging system (10) for special examination or other purposes. The additional device (50) is capable of generating an eddy current in at least a portion of the additional device (50) when being exposed to the generated gradient magnetic field.

Abstract: According to one embodiment, a magnetic resonance imaging system includes a magnetic resonance imaging apparatus and a receiving coil unit. The apparatus includes first circuitry which transmits an RF pulse based on a first clock. The coil unit includes clock generating circuitry, a receiving coil and first conversion circuitry. The clock generating circuitry generates a second clock. The first conversion circuitry samples a magnetic resonance signal in accordance with the second clock. The coil unit further includes generation circuitry which generates shift information regarding a difference between the first clock and the second clock, and shift correction circuitry which corrects the sampled magnetic resonance signal by using the shift information.

Abstract: Techniques are described herein that are capable of performing sound source localization (SSL) confidence estimation using machine learning. An SSL operation is performed with regard to a sound to determine an SSL direction estimate and an SSL-based confidence associated with the SSL direction estimate based at least in part on a multi-channel representation of the sound. The SSL direction estimate indicates an estimated direction from which the sound is received. The SSL-based confidence indicates an estimated probability that the sound is received from the estimated direction. The multi-channel representation includes representations of the sound that are detected by respective sensors (e.g., microphones). Additional characteristic(s) of the sound are automatically determined.

Abstract: Position determination for a mobile station is achieved through the modification of certain Wi-Fi access point and station signals, that are radiated by a certain master (i.e., guiding) base station, combined with slave (i.e., guided) stations having known coordinates, and processing the signals received from these base stations at the mobile station to determine the desired position.

Abstract: A method for determining the location of a mobile device in a vehicle may include the transmission by one or more speakers of the vehicle of a sound signal having predetermined characteristics. The mobile device may include the capability to recognize the sound signal based on methods to identify a sound signal having the predetermined characteristics. In some aspects, the mobile device may incorporate software having a specific filter that is matched to the characteristics of the sound signal transmitted by the speakers. The mobile device may also include software configured to disambiguate effects of multi-path scattering, reflection, and attenuation of the signal through the vehicle cabin. The vehicle may include software to generate the sound signal and to adjust the sound signal characteristics for position-dependent signal fading, frequency dependent signal fading, and high amplitude audio interference.

Abstract: Systems, device and methods are provided for calibrating an antenna array comprising a plurality of antennas such as a plurality of transmit and receive antennas by utilizing an arena comprising one or more targets and a medium.

Abstract: A radar detection system and method include a radar detector for transmitting radar signals over a plurality of sweeps, detecting reflected returning radar signals for the sweeps, and converting the reflected returning radar signals into digital data signals, which are processed to by a time-averaging approach by which data for each of a plurality of range-plus-velocity (RV) bins is analyzed over multiple sweeps to detect a first clutter object at particular RV value and an RV-averaging approach by which data for a plurality of RV values within each sweep are combined to form RV averages for each sweep and the RV averages for a plurality of sweeps are analyzed over multiple sweeps to detect a second clutter object. The processor indicates that the radar detector is not blocked if the time-averaging approach or the RV averaging approach results in at least one of the clutter objects being detected.

Abstract: A method for calibrating an antenna pattern of a sensor in an automotive detection system includes receiving reflected signals and generating receive signals indicative of the reflected signals. Processing the receive signals to generate detections of objects including one or more ground-stationary clutter objects, each of the detections being associated with a detected azimuth and detected relative velocity of each ground-stationary clutter object. For each of a plurality of angles with respect to a boresight of an antenna of the sensor, processing the detected azimuth and detected velocity of one of the ground-stationary clutter objects and a signal indicative of velocity of the sensor to generate an actual antenna pattern for the antenna of the sensor. A calibrated antenna pattern for the antenna of the sensor is generated using the actual antenna pattern to adjust an assumed antenna pattern.