Abstract: A system and method is provided for correcting receiver bias during quantitative proton density mapping with magnetic resonance fingerprinting (MRF). The method comprises acquiring MRF data from a region of interest in a subject by performing a pulse sequence using a series of varied sequence blocks to elicit a series of signal evolutions. The method further comprises comparing the MRF data to a MRF dictionary to simultaneously map proton density and another tissue property from the region of interest, the proton density map having a proton density signal and a receiver sensitivity profile signal. The method also includes quantifying the proton density signal and the receiver sensitivity profile signal using parameters provided by the proton density map and the tissue property map, and generating a quantitative map from the region of interest based on the proton density signal.

Abstract: Techniques are disclosed for assisting in positioning an accessory unit on a patient for a magnetic resonance examination. Also disclosed is a magnetic resonance apparatus, which is designed to perform a method for assisting in positioning an accessory unit on a patient for a magnetic resonance examination. A corresponding computer program product is also disclosed, which is designed to perform a method for assisting in positioning an accessory unit on a patient for a magnetic resonance examination, and an electronically readable data storage medium containing the computer program.

Abstract: Methods and apparatus for reducing noise in RF signal chain circuitry for a low-field magnetic resonance imaging system are provided. A switching circuit in the RF signal chain circuitry may include at least one field effect transistor (FET) configured to operate as an RF switch at an operating frequency of less than 10 MHz. A decoupling circuit may include tuning circuitry coupled across inputs of an amplifier and active feedback circuitry coupled between an output of the amplifier and an input of the amplifier, wherein the active feedback circuitry includes a feedback capacitor configured to reduce a quality factor of an RF coil coupled to the amplifier.

Abstract: A method and apparatus for receiving (RX) radio-frequency (RF) signals suitable for MRI and/or MRS from a plurality of MRI “coil elements” (antennae), each contained in one or a plurality of body-coil parts, wherein the body-coil parts are easily assemble-able into a body-coil assembly (e.g., in some embodiments, a cylindrical body-coil assembly) with shield elements that are overlapped and/or concentric, and wherein the body-coil assembly is readily disassemble-able for easier shipping, and wherein the body-coil parts are optionally usable individually as transmit (TX) and/or receive (RX) coil elements for MRI. In some embodiments, the system provides for repeatable assembly and disassembly for ease of maintenance (such as frequency tuning and impedance matching) such that the body-coil assembly can be fully assembled and tested, then taken apart for less costly and easier shipping (with reduced risk of damage) and then reassembled at the destination for operation in an MRI system.

Abstract: Various methods and systems are provided for a flexible, lightweight and low-cost stretchable radio frequency (RF) coil of a magnetic resonance imaging (MRI) system. In one example, a RF coil assembly for a MRI system includes a loop portion comprising distributed capacitance conductor wires, a coupling electronics portion including a pre-amplifier; and a stretchable material to which the loop portion and coupling electronics portion are attached and/or enclosed therein.

Abstract: Methods and apparatus for reducing noise in RF signal chain circuitry for a low-field magnetic resonance imaging system are provided. A switching circuit in the RF signal chain circuitry may include at least one field effect transistor (FET) configured to operate as an RF switch at an operating frequency of less than 10 MHz. A decoupling circuit may include tuning circuitry coupled across inputs of an amplifier and active feedback circuitry coupled between an output of the amplifier and an input of the amplifier, wherein the active feedback circuitry includes a feedback capacitor configured to reduce a quality factor of an RF coil coupled to the amplifier.

Abstract: The invention provides for a medical instrument (100) comprising a magnetic resonance imaging system (104) with an imaging zone (132). The medical instrument further comprises an external beam radiotherapy system (102). A magnetic resonance antenna (129) surrounds the imaging zone. The magnetic resonance antenna comprises at least one detuning circuit (131) comprising at least one solid state switching element (308, 400, 900, 902) for switching the magnetic resonance antenna between a tuned mode and a detuned mode. The at least one solid state switching element conducts current in the detuned mode. The magnetic resonance antenna comprises at least one antenna element (300) comprising a tuning capacitor (302). The detuning circuit is connected in parallel with the tuning capacitor. The detuning circuit comprises a primary LC circuit (306) in series with the at least one solid state switching element.

Abstract: A magnetic resonance imaging (MRI) system having a resistive, solenoidal electromagnet for whole-body MRI may include ferromagnetic material within an envelope of the electromagnet. The system can be configured to have a field strength of at least 0.05 Tesla and its main electromagnetic field can be generated by layers of conductors instead of bundles. Certain electromagnet designs may be fabricated using non-metallic formers, such as fiberglass, and can be constructed to form a rigid object with the layers of conductors by fixing all together with an epoxy. The electromagnet may be configured to have two separated halves, which may be held apart by a fixation structure such as carbon fiber. The power supply for certain electromagnets herein may have current fluctuations, at frequencies of 180 Hz or above, of at least one part per ten thousand without requiring an additional current filter.

Abstract: An apparatus for providing a B0 magnetic field for a magnetic resonance imaging system. The apparatus includes at least one first B0 magnet configured to produce a first magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, the at least one first B0 magnet comprising a first plurality of permanent magnet rings including at least two rings with respective different heights.

Abstract: Methods and apparatus for reducing noise in RF signal chain circuitry for a low-field magnetic resonance imaging system are provided. A switching circuit in the RF signal chain circuitry may include at least one field effect transistor (FET) configured to operate as an RF switch at an operating frequency of less than 10 MHz. A decoupling circuit may include tuning circuitry coupled across inputs of an amplifier and active feedback circuitry coupled between an output of the amplifier and an input of the amplifier, wherein the active feedback circuitry includes a feedback capacitor configured to reduce a quality factor of an RF coil coupled to the amplifier.

Abstract: A magnetic resonance (MR) imaging system includes: a main magnet configured to generate a volume of magnet field suitable for forming MR imaging; a transmit radio frequency (RF) coil assembly configured to transmit at least one RF signal; a receive radio frequency (RF) coil assembly configured to, in response to the at least one RF pulse, receive MR signals; a gradient coil assembly comprising (i) windings of coils arranged in a radial layer, and (ii) a first set of connectors embedded in the radial layer to reduce a radial extent occupied by the gradient coil assembly, the first set of electrical connectors configured to drive the windings of coils; and a control unit coupled to the transmit RF coil assembly, the receive RF coil assembly, and the gradient coils, the control unit configured to synchronously operate the gradient coil assembly, the transmit coil assembly, and the receive coil assembly.

Abstract: Systems and methods are provided for correlating functional magnetic resonance imaging (fMRI) with gene expression. Brains of first and second sets of patients are imaged at first and second times to provide first and second sets of fMRI images. Blood is drawn from each of the first and second sets of patients at the first and second times to provide first and second sets of gene expression transcripts. A therapeutic is administered to the first set of patients between the first and second times. A change in the connectivity of the brain for each patient is determined from the first and second sets of fMRI images. A set of changes in the peripheral lymphocyte gene expression that are correlated with changes in the connectivity of the brain are determined from the change in the connectivity of the brain for each patient and the collected imaging and gene expression data.

Abstract: A method for creating a dictionary for a magnetic resonance fingerprinting (MRF) reconstruction includes training a semi-supervised learning system based on at least a set of MRF data and a set of control variables and generating a plurality of signal evolutions using the trained semi-supervised learning system. The method also includes generating an MRF dictionary using the plurality of signal evolutions generated using the trained semi-supervised learning system and storing the MRF dictionary in a memory. In one embodiment, the semi-supervised learning system is a MRF generative adversarial network (GAN).

Abstract: A method for quantifying T1, T2 and resonance frequency simultaneously using magnetic resonance fingerprinting (MRF) includes accessing an MRF dictionary using a magnetic resonance imaging (MRI) system. The MRF dictionary is generated by simulating signal evolutions that include associated off-resonance effects for each signal evolution. The method further includes acquiring MRF data from a region of interest in a subject using the MRI system and a MRF pulse sequence having a plurality of radio frequency (RF) excitations and a readout associated with each RF excitation. Each readout includes a plurality of segments and each segment is used to generate a time frame. The method also include comparing the MRF data to the MRF dictionary to identify a plurality of parameters including T1, T2 and resonance frequency for the MRF data and generating a report indicating the at least one of the plurality of parameters of the MRF data.

Abstract: A method for magnetic resonance fingerprinting (MRF), including accessing MRF data and a dictionary of signal evolutions. A plurality of regions-of-interest (ROIs) are selected in the MRF data. A first series of tissue parameter estimates is generated from the MRF data in the ROIs using the dictionary and a multicomponent Bayesian framework. From the first series of tissue parameter estimates, probability distributions are computed for different tissue types. The method further includes creating a reduced dictionary by removing entries from the dictionary having tissue parameter values not contained within the computed probability distributions. A second series of tissue parameter estimates is generated from the MRF data using the reduced dictionary and a multicomponent Bayesian framework. The method also includes generating a tissue probability map for each different tissue type from the second series of tissue parameter estimates.

Abstract: A system and method for processing highly undersampled multi-echo spin-echo data by linearizing the slice-resolved extended phase graph model generates highly accurate T2 maps with indirect echo compensation. Principal components are used to linearize the signal model to estimate the T2 decay curves which can be fitted to the slice-resolved model for T2 estimation. In another example of image processing for highly undersampled data, a joint bi-exponential fitting process can compensate for image variations within a voxel and thus provide partial voxel compensation to produce more accurate T2 maps.

Abstract: In a method for isochronous communication of components of a multi-component apparatus, which communicate via peer-to-peer communication connections created by a switch, a periodic communication clock signal is provided by a control computer to all the components, with a communication window between two communication clock cycles of the communication clock signal, in which a communication information item of the isochronous communication is transferrable from a transferring component to at least one addressed component. A synchronization, in relation to the communication clock signal, between at least two of the components is produced by at least one synchronization message sent via the switch by one of the components to be synchronized to all the other components to be synchronized in a communication time window.

Abstract: A method for enhancing the performance of an imaging system that includes providing a magnetic resonance imaging system; providing an object to be imaged, wherein the object has a shape, includes a region of interest therein, and has a first dielectric constant; providing a pad that conforms to the shape of the object and contains a material having a second dielectric constant that is higher than the first dielectric constant; surrounding the pad and the object being imaged with at least one radio frequency coil; using the at least one coil to generate a magnetic field having an intensity of 3 T that extends through the material of the pad and into the region of interest of the object being imaged, and wherein positioning the at least one coil to surround the pad and the object increases the intensity of the magnetic field produced by the at least one coil within the region of interest of the object; using the at least one coil to detect the magnetic field generated in the region of interest of the object bei

Abstract: The present application provides a system and method for quantifying perfusion using a dictionary matching approach. In some aspects, the method comprises performing a predetermined pulse sequence using an MRI system to acquire MRI data from the subject after having delivered a dose of a contrast agent to the subject. The method also includes comparing the MRI data to a dictionary to determine perfusion information, and generating, using the perfusion information, a report indicative of perfusion within the subject.

Abstract: A method for magnetic resonance fingerprinting (MRF) with reduced acoustic noise includes accessing a MRF dictionary using a magnetic resonance imaging (MRI) system, acquiring MRF data using the MRI system and a pulse sequence comprising a plurality of arbitrary gradient waveforms for each gradient axis and random repetition times to control acoustic noise, comparing the MRF data to the MRF dictionary to identify at least one parameter of the MRF data and generating a report indicating the at least one parameter of the MRF data.

Abstract: A method for characterizing a tissue in a subject using magnetic resonance fingerprinting (MRF) includes acquiring MRF data from a tissue in a subject using a magnetic resonance imaging (MRI) system, comparing the MRF data to a MRF dictionary to identify quantitative values of at least one tissue property for the MRF data, generating a quantitative map based on the quantitative values of the at least one tissue property, identifying at least one region of interest on the quantitative map, determining at least one texture feature of the at least one region of interest of the quantitative map, characterizing the tissue in the at least one region of interest based on the at least one texture feature and generating a report indicating the characterization of the tissue based in the at least one texture feature.

Abstract: In a magnetic resonance (MR) method and apparatus for reconstructing MR tomography images with variable time resolution, a preliminary reconstruction of preview images takes place, using raw data acquired in a closed time period at different times from the same body region of a patient. Scan data are acquired from the preview images and/or from the raw data, the scan data quantitatively representing the introduction of a contrast medium over a time span. Diagnostic reconstruction parameters are then specified, which designate time portions in which reconstruction is to be conducted with different time resolutions, based on the scan data. The reconstruction of diagnostic MR tomography images then takes place, using the diagnostic reconstruction parameters.

Abstract: In a method and apparatus for magnetic resonance angiography (MRA) a time of flight (TOF) scanning sequence is used that has a first TOF subsequence having at least a saturated zone (T-sat) module and at least an excitation module, with a T-sat module directly followed by at least an excitation module, and a second TOF subsequence that has at least an excitation module and no T-sat module. K-space data, as a first k-space data portion are acquired after each excitation module of the first TOF subsequence, with the first k-space data portion filling the central area of k-space. K-space data, as a second k-space data portion are acquired after each excitation module of the second TOF subsequence, with the said second k-space data portion filling the edge area of k-space. The k-space data are used to reconstruct a magnetic resonance image.

Abstract: A method for reducing artifacts in magnetic resonance imaging (MRI) data includes acquiring a k-space dataset of an anatomical subject using a MRI scanner. An iterative compressed sensing reconstruction method is used to generate a reconstructed image based on the k-space dataset. This iterative compressed sensing reconstruction method uses (a) L1-norm based total variation constraints applied the temporal and spatial dimensions of the k-space dataset and (b) a low rank constraint. After the reconstructed image is generated, a deep learning network is used to generate an artifact image depicting motion artifacts present in the reconstructed image. The reconstructed image is subtracted from the artifact image to yield a final image with the motion artifacts removed.

Abstract: A method is provided for performing a quality analysis of a radio frequency (RF) coil of a magnetic resonance imaging device. In an operational mode, the RF coil is configured to acquire MR signals from an object to be observed. In a test mode: a test signal is emitted by a RF transmitter; the test signal from the RF transmitter is received directly by the RF coil, wherein the RF coil provides an output signal; and a performance indicator is provided by analyzing the output signal of the RF coil for performing the quality analysis.

Abstract: A system is provided that includes multiple analog-to-digital converters (ADCs), multiple antennas, and one or more processors. The one or more processors are configured, in a first mode of operation, to receive from the multiple ADCs samples of emissions received by one of the antennas and identify a signal of interest. The one or more processors are configured, in a second mode of operation, receive from the multiple ADCs samples of emissions received by the multiple antennas and identify an angle of arrival for the signal of interest.

Abstract: An apparatus for providing marine information is provided including a user interface, a processor, and a memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a sonar image based on sonar return data received from an underwater environment, determine a location associated with the sonar return data based on location data received from one or more position sensors, and render a nautical chart on a display. The computer program code is further configured to cause the apparatus to receive a user input on the user interface directed to a portion of the display in which the nautical chart is presented, and modify presentation of the nautical chart such that the portion of the display presents the sonar image in response to receiving the user input.

Abstract: A method and apparatus for reducing magnetic tracking error in the position and orientation determined in an electromagnetic tracking system is disclosed. In some embodiments, a corrected position and orientation is blended with an uncorrected position and orientation based upon the calculated probability of each. To determine a corrected position and orientation, data from an IMU in the receiver is used to obtain a constraint on the orientation. In other embodiments, the amount of detected error due to electromagnetic distortion is measured. Any error is first assumed to be from “floor distortion,” and a correction is applied. If the error is still deemed too great, a constraint is again obtained from IMU data. Using this constraint, another correction for the distortion is made. The solution from this correction may be blended with a standard solution and the solution from the floor distortion to arrive at a final solution.

Abstract: Embodiments herein relate to a method performed by a wireless device (10) for handling positioning of the wireless en device in a wireless communications 5 network (1). The wireless device (10) receives assistance data from a location node (15), or a radio network node (12), in the wireless communications network, wherein the assistance data comprises a positioning configuration comprising a start and/or stop information indicating when positioning reference signal, PRS, transmissions from the radio network node are started and/or ended. The wireless device measures, based on the assistance data, a positioning information of PRSs; and g transmits the measured positioning information to the location node or the radio network node.

Abstract: An apparatus is configured to perform a method for collaborative localization of multiple devices in a geographic area including receiving global localization data originating with one or more neighboring devices, receiving local localization data originating with a mobile device, determining a first confidence level from the local localization data, determining a second confidence level from the global localization data, and performing, by a processor, a collaborative localization calculation for the mobile device based on the first confidence level and the second confidence level.

Abstract: The disclosure relates to a method performed by a wireless device for reporting an RSTD value to a network node of a wireless communication network. The method comprises receiving (810) a configuration of positioning reference signals, PRSs, from the network node, the configuration indicating a plurality of PRS identities for respective transmission points, TPs, of the wireless communication network, determining (820) an RSTD value for a TP based on the received configuration, and reporting (830) the determined RSTD value for the TP to the network node.

Abstract: A positioning system includes a steerable laser configured to emit a laser beam, an optical receiver, one or more processors, and a memory device. The optical receiver is configured to detect the presence of the laser beam on the optical receiver, measure a received signal strength of light emitted by a luminaire, or both. The memory device stores instructions that, when executed by at least one of the one or more processors cause the positioning system to target the laser beam on the optical receiver, and based on a first angle of the laser beam, a second angle of the laser beam, and an isointense curve associated with the optical receiver and the luminaire, estimate three-dimensional position of the optical receiver relative to the steerable laser source.

Abstract: An apparatus is disclosed for proximity detection using adaptive mutual coupling cancellation. In an example aspect, the apparatus includes at least two antennas, a wireless transceiver connected to the at least two antennas, and a mutual coupling cancellation module. The at least two antennas include a first antenna and a second antenna, which are mutually coupled electromagnetically. The second antenna includes two feed ports. The wireless transceiver is configured to transmit a radar transmit signal via the first antenna and receive two versions of a radar receive signal respectively via the two feed ports of the second antenna. The wireless transceiver is also configured to adjust a transmission parameter based on a decoupled signal. The transmission parameter varies based on a range to the object. The mutual coupling cancellation module is configured to generate the decoupled signal based on the two versions of the radar receive signal.

Abstract: A vehicle radar system and calibration method that provide for system calibration so that target object parameters can be calculated with improved accuracy. Generally speaking, the calibration method uses a number of hypothesized calibration matrices, which represent educated guesses for possible system or array calibrations, to obtain a number of beamforming images. A blurring metric is then derived for each beamforming image, where the blurring metric is generally representative of the quality or resolution of the beamforming image. The method then selects hypothesized calibration matrices based on their blurring metrics, where the selected matrices are associated with the blurring metrics having the best beamforming image resolution (e.g., the least amount of image blurriness). The selected hypothesized calibration matrices are then used to generate new calibration matrices, which in turn can be used to calibrate the vehicle radar system so that more accurate target object parameters can be obtained.

Abstract: Method and apparatus for detecting a movement, such as two or more periodic vibrations, of a target, by sending a radar signal, e.g., near 60 GHz, at the target and processing the signal reflected by the target. One or more components of the movement can have a predominant frequency, such as a frequency of vibration, and two or more components can have different frequencies and, optionally, different magnitudes. A quadrature receiver processes the received signal to produce a base band output signal having in-phase (I) and quadrature-phase (Q) outputs. The in-phase (I) and quadrature-phase (Q) outputs are cross-referenced and real target movement frequency recovered directly in the time domain. System nonlinearity, which does not occur simultaneously on the I and Q channels, is identified and removed. Radar signals having wavelengths near one or more of the target movement magnitudes can be used.

Abstract: A radar system suitable for an automated vehicle comprises at least one receiving element configured to detect reflected radar signals reflected by an object in a field-of-view of the system. The receiving element is further configured to generate detected signals indicative of the reflected radar signals detected by the receiving element. Furthermore, an auto-encoding device performing an auto-encoding operation on the detected signals is embedded in the receiving element such that the receiving element outputs the detected signals in an encoded form.

Abstract: The present technology relates to a distance measurement device and a distance measurement method that can easily suppress interference. A first frame being a period that a distance to a target object is calculated includes a plurality of subframes being periods that irradiation light is emitted, and the emission of the irradiation light is controlled so that timing of head subframes differs between a first frame and a second frame following the first frame, and intervals between the subframes become constant during the period of the first frame. The present technology can be applied to a case where distance measurement for measuring a distance is performed.

Abstract: A lidar sensor for detecting an object in the surrounding area, and a method for activating the lidar sensor, the lidar sensor including: a light source for emitting electromagnetic radiation; a deflection mirror for deflecting the emitted electromagnetic radiation, as deflected emitted electromagnetic radiation, through at least one angle into the surrounding area; and an optical receiver for receiving electromagnetic radiation that has been reflected from the object. The optical receiver has an aperture region disposed on a main beam axis of the light source.

Abstract: A light detection and ranging (LIDAR) sensor assembly can comprise an optics assembly that includes a LIDAR sensor and a set of dovetail joint inserts. The LIDAR sensor assembly can further include a frame comprising a set of dovetail joint septums coupled to the set of dovetail joint inserts of the optics assembly.

Abstract: A distance measuring unit for measurement, based on signal time of flight, of a distance to an object, includes: an emitter configured for the emission of electromagnetic pulses, and sequentially into different emitter solid angle segments of the detection field, a receiver having a first face for detecting electromagnetic radiation, and imaging optics which image the detection field onto the first sensor face, and specifically each of the emitter solid angle segments onto a respective region of the first sensor face. The emitter solid angle segments follow one another along a scan axis, and correspondingly the regions of the first sensor face also follow one another along a first scan line. The first sensor face is subdivided into at least two pixels which adjoin one another on a first separating line. The first separating line extends at least in sections obliquely with respect to the first scan line.

Abstract: Disclosed is a Light Detection and Ranging (LIDAR) sensor which is capable of minimizing the size of a LIDAR sensor which is capable of performing 3D scanning and setting a region of interest for obtaining point cloud data with the removal of light scattering, by separating a transmitter module and a receiver module; disposing a transmitter, a mirror, and a receiver in a specific space so that light emitted from a light source or light reflected from a transmission mirror is reflected from a first reflection region of a moving mirror and is then moved to a target object, after which light reflected from the target object is reflected from a second reflection region of the moving mirror and is moved to the transmission mirror or a photodiode; installing a blocking wall separating movement paths of light; and adjusting the range of movement of the moving mirror.

Abstract: A light detection and ranging system arranged to scan a scene comprises a light source arranged to output light having a first characteristic. A spatial light modulator is arranged to receive the light from the light source and output spatially-modulated light in accordance with computer-generated holograms represented thereon. A holographic controller is arranged to output a plurality of holograms to the spatial light modulator. Each hologram is arranged to form a corresponding light footprint within the scene. The holographic controller is further arranged to change the position of the light footprint within the scene. A light detector is arranged to receive light having the first characteristic from the scene and output a light response signal. The plurality of computer-generated holograms comprise a first plurality of holograms arranged to provide a first scan and a second plurality of holograms arranged to provide a second scan.

Abstract: An object of the present invention is to provide a time measurement device that facilitates a circuit layout. A time measurement device (20) of the present invention includes: a plurality of pixels (30) provided side by side in a first direction, and each including a single-photon avalanche diode (SPAD) disposed on a first semiconductor substrate, and each generating a first logic signal (S35) depending on detection timing in the single-photon avalanche diode (SPAD); and a time measurement section (24) that is disposed on a second semiconductor substrate attached to the first semiconductor substrate and measures the detection timing in each of the plurality of pixels (30).

Abstract: An apparatus for cleaning a lidar sensor may include: a signal analyzer configured to distinguish foreign matters adhering to a window cover, using a signal inputted from a laser receiver of a lidar sensor; a cleaner configured to remove the foreign matters adhering to the window cover; and a controller configured to control the cleaner according to the foreign matters distinguished by the signal analyzer.

Abstract: A LIDAR (Light Detection and Ranging) apparatus for a vehicle including a light emitting unit configured to emit laser light; an angle adjusting unit configured to adjust an emission angle of the laser light emitted from the light emitting unit by reflecting the laser light; a window cover unit installed to discharge the laser light emitted through the angle adjusting unit to the outside of the vehicle; a light receiving unit configured to receive reflected light introduced into the vehicle through the window cover unit; and a moisture removing unit configured to emit far-infrared light using a far-infrared light source to heat the window cover unit through the angle adjusting unit.

Abstract: A impact detection system is provided which includes a user interface comprising a display, processor, and memory. The memory includes computer program code configured to cause an electronic device to receive impact detection data from at least one impact detection device and generate one or more notifications based on the impact detection data.

Abstract: A method in accordance with the present disclosure may include transmitting a plurality of ultrasound pulses toward a medium from a transducer array, wherein the plurality of ultrasound pulses includes a sequence of a Doppler burst (10-1, 10-2) comprising a plurality of unfocused first pulses (12) and a B-mode burst comprising one or more second pulses (13). The method may further include detecting echoes responsive to the transmitted sequence, wherein the detecting includes simultaneously detecting, within a field of view, FOV, of the array, a set (14-1, 14-2) of first echoes responsive to the plurality of unfocused first pulses (12), generating Doppler data from signals representative of the set (14-1, 14-2) of first echoes, generating B-mode image data from signals representative of echoes responsive to the one or more second pulses (13), and simultaneously displaying the Doppler data and B-mode image data.

Abstract: A fish species estimating system may include an acquiring module and a reasoning module. The acquiring module may acquire a data set at least including echo data generated from a reflected wave of an ultrasonic wave emitted underwater. The reasoning module may estimate a fish species of a fish image included in the echo data of the data set acquired by the acquiring module, by using a learned model created by machine learning where the data set is used as input data and the fish species is used as teacher data.

Abstract: A detection device includes a receiver, an inertial-measurement-unit, an electronic-compass, and a controller-circuit. The receiver determines intensity of a homing-signal transmitted from a vehicle and received at the device. The inertial-measurement-unit determines a distance the device is moved. The electronic-compass determines a heading in which the device is moving. The controller-circuit is in communication with the receiver, the inertial-measurement-unit, and the electronic-compass. The controller-circuit determines a first-range between a first-position of the device and the vehicle. The controller-circuit determines that that the device has moved to a second-position based on a first-distance and a first-heading. The controller-circuit determines a second-range between the second-position and the vehicle. The controller-circuit determines that the device has moved to a third-position based on a second-distance and a second-heading.

Abstract: A detector (110, 1110, 2110) for determining a position of at least one object (112) is proposed. The detector (110, 1110, 2110) comprises: at least one transfer device (128, 1128), wherein the transfer device (128, 1128) has at least one focal length in response to at least one incident light beam (116, 1116) propagating from the object (112, 1112) to the detector (110, 1110, 2110); at least two optical sensors (113, 1118, 1120), wherein each optical sensor (113, 1118, 1120) has at least one light sensitive area (121, 1122, 1124), wherein each optical sensor (113, 1118, 1120) is designed to generate at least one sensor signal in response to an illumination of its respective light-sensitive area by the light beam (116, 1116), at least one evaluation device (132, 1132) being configured for determining at least one longitudinal coordinate z of the object (112, 1112) by evaluating a quotient signal Q from the sensor signals.