Abstract: Methods, systems, and apparatus, including computer programs encoded on storage devices, for detecting the power status of an electrical device. In one aspect, an apparatus includes a device that comprises a radio transmitter and a sensor configured to detect the power status of the device. The power status may include information that is indicative of whether the device is powered on or off. The apparatus may also include a processor and a data storage device storing a device identifier associated with the device, and instructions that are operable, when executed by a processor, to cause the processor to perform operations. The operations may include receiving data indicating the power status of the device detected by the sensor, receiving a request for the power status of the device, and transmitting, using the radio transmitter, the device identifier associated with the device and the power status associated with the device.

Abstract: A provided impedance measuring semiconductor circuit can suppress the influence of sensors on the measurements of other sensors in the measurements of the sensors. According to an embodiment, an impedance measuring semiconductor circuit includes a first resistance element, an operational amplifier having a positive input terminal and an output terminal, the positive input terminal receiving a predetermined set voltage, the output terminal being coupled to one end of the first resistance element, a first output-side switch that electrically couples or decouples a first sensor and the other end of the first resistance element, a second output-side switch that electrically couples or decouples a second sensor and the other end of the first resistance element, a first input-side switch that electrically couples or decouples the first sensor and a negative input terminal, and a second input-side switch that electrically couples or decouples the second sensor and the negative input terminal.

Abstract: A RF field sensor in which a magnetostrictive film is deposited on one or more electrodes of one or more quartz resonator(s) in which an electric field of the RF field is detected along one axis of the RF field sensor and a magnetic field of the RF field is detected along an orthogonal axis of the RF field sensor simultaneously.

Abstract: Measurement arrangement and method for measuring an electromagnetic field. It is for this purpose that a measurement probe is arranged on a mechanical probe positioning structure and moved along a number of one or more circular tracks. In this way, the measurement probe can be subsequently located at multiple different spatial positions and the corresponding electromagnetic signal can be measured. Accordingly, properties of an electromagnetic field can be determined by taking into account the measured electromagnetic signal with respect to the related spatial position.

Abstract: Apparatus and associated methods relate to a functional self-test, including (1) generation of an excitation signal, (2) applying the excitation signal to a unit under test (UUT), the excitation signal including a cyclical signal for a first interval and substantially zero signal for a second interval, (3) determining frequency content of a UUT response signal, and (4) generating a fail result in response to the frequency content below a predetermined threshold. In an illustrative example, the UUT may be a piezoelectric element (PE). The UUT response signal may be processed by a filter, for example. A portion of the filtered UUT response signal, responding to the second interval of the excitation signal, may be analyzed by a fast Fourier transform module (FFTm), for example. In various implementations, the functional self-test may advantageously determine the health of a piezoelectric gas sensing element, periodically, in a field-deployed implementation.

Abstract: A control module for a lighting fixture may include an input circuit (e.g., a wireless communication circuit) that may be susceptible to noise generating by a noise-generating source (e.g., a lighting control device in the lighting fixture). The control circuit may execute a self-test procedure to determine if the magnitude of the noise is acceptable or unacceptable for normal operation of the control module. During the self-test procedure, the control circuit may measure a noise level at a connection of the input circuit and determine if the noise level causes the self-test procedure to fail. The control circuit may control the lighting load to multiple intensities, measure noise levels of the output signal at each intensity, and process the noise levels to determine if the test has passed or failed. The control circuit may illuminate a visual indicator to provide an indication that the self-test procedure has failed.

Abstract: A method for testing a multicore cable that includes a single common shield covering plural insulated wires. The testing method includes inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages. The voltages of output signals are measured in a state that an output variation reduction capacitive element is connected in series with a coupling capacitance generated by the capacitive coupling.

Abstract: Nowadays, there are different techniques used to effectively locate faults in electric power systems. These techniques are based on travelling wave, time-domain, phasor-domain, power quality data, superimposed components, and artificial intelligence (AI). Also, each one of these techniques has a specific application; such as locating faults in distribution, sub-transmission, transmission, or generation part. The grid itself could be a conventional or smart, large or micro-grid, AC or DC grid. Also, the lines themselves could be divided into three possible types: 1) overhead, 2) underground, and 3) joint-nodes. Directional overcurrent relays (DOCRs) are preferred to protect distribution networks, because they can compromise between different design criteria. This invention utilizes the advanced features available in numerical DOCRs to locate faults in distribution networks.

Abstract: The invention relates to a device and a method for insulation monitoring including identification of a faulty outer conductor in a three-phase ungrounded power supply system. The fundamental idea of the present invention rests upon determining the phase angle between the measured mains voltage and the measured neutral-point voltage when presuming only one measurement of the mains voltage to ground at one of the outer conductors and one measurement of the neutral-point voltage to ground. The value of the thus determined phase angle is in one of three angle ranges which each extend over 120 degrees and are to be assigned to one of the three outer conductors so that the faulty outer conductor is determined. The faulty outer conductor is thus detected by measuring only one mains voltage in conjunction with the measurement of the neutral-point voltage by evaluating the phase between the two measured voltage.

Abstract: An apparatus and method for determining occurrence of a fault at an insulated-gate bipolar transistor (IGBT) module is disclosed. The IGBT module and apparatus can be part of an electric vehicle. A sensor obtains a measurement of a thermal parameter of the IGBT module. A processor receives the measured thermal parameter from the sensor, and runs a model of the IGBT module to determine a thermal parameter of the IGBT module under normal operation conditions. The processor provides an alert signal to indicate the occurrence of the fault when a difference between the estimated thermal parameter and the measured thermal parameter is greater than or equal to a selected threshold.

Abstract: The failure diagnosis system is provided with an electric tool 1, and a diagnosis device 100 that can be connected with the electric tool 1. The diagnosis device 100 reads the usage history information of the electric tool 1 from the electric tool 1 to which the diagnosis device 100 has been connected, estimates a failure part of the electric tool 1 on the basis of the usage history information, and reports information indicating the failure part. The usage history information includes at least one of the motor operation time, the number of operations of a motor driving switch, the power supply voltage, a motor current, the motor temperature, the temperature of a motor driving circuit, whether or not the motor can be driven, the presence or absence of a high-temperature abnormality, the presence or absence of an overcurrent abnormality, and the presence or absence of an overvoltage abnormality.

Abstract: A method for retesting a wafer is provided, including following steps of: providing a wafer having dice; providing a plurality of probe sets each including probes used to test the dice; on the basis of a first threshold, the probe sets respectively test the dice so as to classify the dice into first dice and retesting dice, each value obtained from testing each of the first dice being higher than the first threshold, each value obtained from testing each of the retesting dice being lower than the first threshold; conducting a smart sifting operation to classify the retesting dice of the wafer into second dice and third dice, wherein value obtained from testing each of the second dice is higher than a second threshold, and value obtained from testing each of the third dice is lower than the second threshold.

Abstract: Various features relate to a test ring including an integrated circuit. The test ring is located around a periphery of the integrated circuit. The test ring includes a first terminal, a second terminal, and a first circuit element, wherein the first terminal is coupled to the first circuit element, and the first circuit element is coupled to the second terminal, wherein the first terminal, the first circuit element and the second terminal are coupled together in series.

Abstract: A semiconductor device includes a processing block which comprises one or more intellectual property (IP) blocks; a scan chain which is electrically connected to the IP blocks, wherein the scan chain block has a scan in (SI) terminal and a scan out (SO) terminal; a pattern generating circuit which generates a data pattern having a plurality of bits and inputs the data pattern to the scan in (SI) terminal of the scan chain; and an analyzing circuit which determines the degree of degradation of each of the IP blocks based on a result pattern output from the scan out (SO) terminal of the scan chain.

Abstract: A method, system, and architecture (100) for adaptively field testing for hardware faults on an integrated circuit device includes a central quality assurance server (121) which receives specified hardware metric data (131) monitored at an integrated circuit device (110) in the field, identifies prioritized built-in self-test (BIST) fault detection tests (134) based on the specified hardware metric data, securely downloads the prioritized BIST fault detection tests (132) to the integrated circuit device for execution to identify a first hardware fault at the integrated circuit device, and then receives diagnosis information (133) identifying the first hardware fault from the integrated circuit device which is used to update the prioritized BIST fault detection tests.

Abstract: An address and command port interface selectively enables JTAG TAP domain operations and Trace domain operations within an IC. The port carries TMS and TDI input and TDO output on a single pin and receives a clock signal on a separate pin. The addressable two pin interface loads and updates instructions and data to the TAP domain within the IC. The instruction or data update operations in multiple ICs occur simultaneously. A process transmits data from an addressed target device to a controller using data frames, each data frame comprising a header bit and data bits. The logic level of the header bit is used to start, continue, and stop the data transmission to the controller. A data and clock signal interface between a controller and multiple target devices provides for each target device to be individually addressed and commanded to perform a JTAG or Trace operation.

Abstract: The invention concerns an optoelectronic chip including a pair of optical inputs having a same bandwidth, and each being adapted to a different polarization, at least one photonic circuit to be tested, and an optical coupling device configured to couple the two inputs to the circuit to be tested.

Abstract: An optoelectronic chip includes optical inputs having different passbands, a photonic circuit to be tested, and an optical coupling device configured to couple said inputs to the photonic circuit to be tested.

Abstract: A system for magnetic field testing comprising a magnetic field generation device configured to generate a magnetic field in a rotor, a plurality of magnetic field measurement devices configured to measure a magnetic field at a predetermined position on the rotor, a drive mechanism configured to rotate the rotor and a test system configured to record the plurality of magnetic field measurements as a function of an angular position of the rotor.

Abstract: A method and system for estimating a state of health using battery model parameters are provided. The system includes a battery model parameter extractor that is configured to extract liquid-phase diffusivity of Li-ion parameters and a storage unit that is configured to store a mapping table in which states of health (SOH) for each liquid-phase diffusivity of Li-ion parameter are mapped. In addition, a SOH estimator is configured to use the mapping table to estimate the SOH that corresponds to a liquid-phase diffusivity of Li-ion extracted from the battery model parameter extractor.

Abstract: An inspection apparatus including the power supply device, positive and negative conductive lines, connected to the power supply device and having corresponding first and second probes, at corresponding front ends, a resistor and a switch serially disposed between the positive conductive line and the negative conductive line, a circuit resistance calculation unit that calculates a circuit resistance value based on a difference in voltage between when the switch is turned off and turned on, an inspection unit configured to inspect the electrical storage device, and a virtual resistance setting unit that increases the output voltage after the start of inspection.

Abstract: A battery tester for efficiently extracting intrinsic characteristics of a battery. The battery tester comprises a sensing unit, a controller, a bi-directional power converter, and an energy storage unit so that energy discharged from a battery during testing is stored in the energy storage unit and recycled back to the battery. The battery tester uses a high current pulse test and a switching excitation test with a modified particle swarm optimization algorithm to analyze precise model parameters that can be used to describe the health conditions of a battery.

Abstract: Systems and methods are provided for calibrating electromagnetic position tracking systems commonly used in virtual reality systems by compensating for steady state magnetic field distortions that can occur within a tracking volume and distort magnetic sensor readings. The calibration system includes a calibration device that holds magnetic sensor(s) in a fixed position relative to a reference position sensor object provided on the calibration device. The calibration data collection process includes positioning the calibration device at multiple locations within a tracking volume and measuring magnetic position readings using a magnetic tracking system and a corresponding reference position using the reference position tracking system.

Abstract: A method for object position estimation based on a magnetic field using an underwater sensor network, includes: step of receiving a magnetic field signal that is emitted from an underwater moving object using an underwater sensor network which is configured with a plurality of magnetic field sensors in the water; step of extracting an induced magnetic field signal by removing a geomagnetic field and a noise signal from the received magnetic field signal; step of determining whether or not the moving object enters the underwater sensor network using the induced magnetic field signal; and step of estimating a position of the object using position information of the plurality of sensors that sense the object if it is determined that the object enters the underwater sensor network.

Abstract: An apparatus comprises a first substrate and two coils supported by the first substrate and arranged next to each other, the coils configured to each generate a magnetic field which produces eddy currents in and a reflected magnetic field from a conductive target, the two coils arranged so their respectively generated magnetic fields substantially cancel each other in an area between the coils. One or more magnetic field sensing elements are positioned in the area between the coils and configured to detect the reflected magnetic field.

Abstract: A printed circuit board assembly includes a current sense trace to transmit an electrical signal through the assembly. The assembly includes a magnetic core including an opening for receiving the current sense trace and includes first stack layers and second stack layers that each define opposing sides of the opening, and elongate layers that extend from the first stack layers to the second stack layers and define additional opposing sides of the opening. The assembly further includes a Hall effect sensor located in the first stack layers or the second stack layers and configured to detect Hall effect data corresponding to a first Hall effect current of the electrical signal having a DC frequency. The assembly further includes a coil wrapped around the first stack layers or the second stack layers and configured to detect coil data corresponding to an AC component of the signal.

Abstract: A magnetic field sensor for sensing a direction of a magnetic field in an x-y plane, can include a first plurality of magnetic field sensing elements operable to generate a first plurality of magnetic field signals and a second plurality of magnetic field sensing elements operable to generate a second plurality of magnetic field signals. The magnetic field sensor can also include at least one sequence switches circuit operable to select ones of the first plurality of magnetic field signals and to select ones of the second plurality of magnetic field signals. The magnetic field sensor can also include a processing circuit operable to combine the selected ones of the first plurality of magnetic field signals and the selected ones of the second plurality of magnetic field signals to generate at least one sequential signal and to process the at least one sequential signal to generate an x-y angle signal indicative of a direction of the magnetic field in the x-y direction. An associated method is described.

Abstract: A vector magnetometer comprising a cell filled with an atomic gas subjected to an ambient magnetic field, an optical pumping source capable of emitting a pump beam tuned to a pumping wavelength towards the cell and a parametric resonance detection device receiving a probe beam that has passed through the cell, the probe beam being identical to or different from the pump beam. The magnetometer also comprises a polarisation device configured so as to simultaneously or alternately confer linear polarisation and circular polarisation to the pump beam emitted towards the cell. And the detection device comprises an optical set up configured to separate, from the probe beam that has passed through the cell, optical signals carrying respectively information about an alignment state of the atoms from information about an orientation state of the atoms.

Abstract: In a magnetic resonance (MR) apparatus and an operating method therefor, MR data are acquired from a patient using an MR sequence wherein, after at least one excitation pulse, multiple refocusing pulses are radiated during a readout period. The respective strengths of the refocusing pulses proceed according to a first flip-angle variation over time that is defined so as to minimize the SAR of the patient. A multislice imaging technique is used for simultaneous excitation and readout of at least two slices of a slice group of the patient, and flip-angle variations, which differ from the first variation, are selected in order to further reduce the SAR of the patient, compared with the use of identical flip-angle variations.

Abstract: According to one embodiment, an RF circuit includes a directional coupler, processing circuitry, and an adjuster. The directional coupler includes a first port for outputting at least a part of a traveling wave and a second port for outputting at least a part of a reflected wave. The processing circuitry is configured to calculate impedance of a load side that is viewed from the directional coupler, by using a voltage standing wave ratio based on respective outputs from the first port and the second port and a phase of the reflected wave based on an output from the second port. The adjuster is configured to adjust an output from at least one of the first port and the second port based on the impedance calculated by the processing circuitry.

Abstract: A cage with a fastening system (1) in a magnetic resonance device (MRD) is disclosed, said cage in an MRD comprising (a) M pole pieces (45) (M?2); (b) N side magnets (20) (N?2), said side magnets substantially enclosing said pole pieces and thereby defining a magnetic envelope and enclosed volume therein; (c) N side walls (10), said side walls substantially enclosing said side magnets; (d) P face walls (30) (P?2); and (e) a plurality of fastening rods (100); wherein each of said fastening rods physically interconnects at least one pair of side walls, passing through at least one of said side magnets and at least one of said pole pieces.

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: 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: Disclosed is a method for analyzing an NMR spectrum of a lipoprotein-containing sample. The method includes the following steps: a) defining a spectral range to be analyzed of at least 0.5 ppm of an NMR spectrum of a lipoprotein-containing sample; b) fitting a first spectral function of a first individual lipid component and at least one further spectral function of a further individual lipid component into the whole spectral range to be analyzed; and c) determining a concentration or an amount of the first individual lipid component and the further individual lipid component and therefrom a concentration or an amount of the first defined lipoprotein class or lipoprotein subclass in the lipoprotein-containing sample and optionally of each other defined lipoprotein class or lipoprotein subclass based on the fitting operations of step b).

Abstract: A method for determining proper functioning of an analytic system includes: a) measuring a control composition with an analytic system, the functioning of which is to be determined, to obtain a control result; b) analyzing the control result for predefined test criteria; and c) determining the functioning of the analytic system based on the analysis of step b). The control result includes signals distributed over a whole result space that equals a result space of the analytic system resulting from a measurement of a sample on the analytic system.

Abstract: A plurality of subject parameter maps are acquired at high speed. In addition to using an imaging sequence for generating both a gradient echo and a spin echo in a single imaging sequence, one or more parameters such as the longitudinal relaxation time T1 and the apparent transverse relaxation time T2* are calculated using the gradient echo and another parameter such as true transverse relaxation time T2 is calculated using the spin echo. When a value of one parameter is calculated, a value of the parameter calculated at the time of calculating the other parameter can be used.

Abstract: An MR image especially useful for computer-guided diagnostics uses at least one programmed computer to acquire an MR-image of T1 values for a patient volume containing at least one predetermined tissue type having a respectively corresponding predetermined range of expected T1 values. A color-coded T1-image is generated from the MR-image by (a) assigning a first color or spectrum of colors to those pixels having a T1 value falling within a predetermined range of expected T1 values and (b) assigning a second color or spectrum of colors to those pixels having a T1 value falling outside a predetermined range of expected T1 values. The color-coded T1-image is then displayed for use in computer-aided diagnosis of patient tissue.

Abstract: A system for magnetic resonance imaging an object via a stochastic optimization of a sampling function is provided. The system includes a magnet assembly and a controller. The magnet assembly is operative to acquire MR data from the object. The controller is operative to: acquire a first MR data set using the magnet assembly; select the sampling function from a plurality of sampling function candidates based at least in part on the stochastic optimization; and acquire a second MR data set from the object using the magnet assembly based at least in part on the sampling function.

Abstract: An imaging time is shortened while reducing image distortion caused by a magnetic field disturbance caused by metal inside a subject. A plurality of frequency bands is set within a predetermined frequency range, a subject is caused to be irradiated with a high-frequency magnetic field pulse having one of the plurality of frequency bands from a transmission unit, a reception unit is caused to receive an NMR signal generated by the subject, an image generation unit is caused to repeatedly perform an operation for generating an image from the NMR signal while changing the frequency band, a plurality of images respectively corresponding to the plurality of frequency bands are obtained, and then the plurality of images are composited. In this case, the plurality of frequency bands are set so that adjacent frequency bands partially overlap each other.

Abstract: Systems and methods for cell size imaging using MRI systems are provided. An exemplary method includes obtaining first diffusion MRI data for biological tissues of interest and at least one second diffusion MRI data for the biological tissues of interest having a different diffusion time than the first diffusion MRI data. The method also includes calculating, from the first and at least one second diffusion MRI data, incremental area under curve values of the first and at least one second diffusion MRI data for a chosen diffusion time range. Thereafter, an image for the biological tissues of interest is generated, wherein intensity values for each of the plurality of image voxels is based on a corresponding one of the incremental area under curve values.

Abstract: A method for operating a magnetic resonance device includes using an acquisition technique using a plurality of coil elements of a transmit and/or receive coil in parallel. For each coil element, a sensitivity map describing the spatial sensitivity of the respective coil element is acquired at the start of the acquisition procedure and used in the reconstruction of a magnetic resonance image dataset from the magnetic resonance data. Magnetic resonance data of the individual coil elements is thus merged. Reference information indicating the position of the patient and/or of the coil elements is measured at the start of the examination procedure. Comparison information supplementary thereto is measured during the acquisition procedure. A reacquisition of at least a portion of the sensitivity maps is performed if at least one recalibration criterion describing a deviation exceeding a threshold value is fulfilled in a comparison of the comparison data with the reference data.

Abstract: The invention relates to a magnetic resonance imaging system (100). The magnetic resonance imaging system (100) comprises a gradient system and a processor (124) for controlling the magnetic resonance imaging system (100). Execution of machine executable instructions causes the magnetic resonance imaging system (100) to: acquire by coil elements (114) first magnetic resonance data simultaneously from a group of passive local probes 5 (302, 312, 402, 702, 901), wherein the first group of passive local probes (302, 312, 402, 702, 901) comprises a plurality of passive local probes (302, 312, 402, 702, 901) located spaced apart from each other; disentangle contributions to the first magnetic resonance data from the individual local probes, calculate for the magnetic resonance imaging system (100) a gradient impulse response function of the gradient system using the first magnetic resonance data 10 from the local probes; determine correction factors using the gradient impulse response function.

Abstract: A method of calibrating a triaxial sensor such as a magnetometer. The method includes steps (DIS) to calculate a spatial distribution indicator of a set of measurements output by the sensor, and to determine (AJS), using a fitting method, parameters of a parametric surface that can be used to fit said surface to the set of measurements. The fitting method is selected from among several predetermined fitting methods as a function of the spatial distribution indicator. The predetermined fitting methods may include an ellipsoid fitting method, a sphere fitting method, a sphere fitting method and a two-step fitting method consisting of a first fitting to a sphere followed by a second fitting to an ellipsoid, the centre of which is coincident with the centre of the sphere of the first fitting.

Abstract: A beacon transmitter device (BTD1; 700; 900) is disclosed. The beacon transmitter device comprises a controller (710; 910) and a short-range wireless beacon transmitter (732; 932). The controller is configured to cause a first transmission (S12) of a short-range wireless beacon signal (BA1) by the beacon transmitter, the beacon signal identifying a beacon region. The controller is also configured to wait during a beacon delay time period (BDTP), and then cause a second transmission (S32) of the short-range wireless beacon signal (BA1) by the beacon transmitter. The beacon delay time period (BDTP) is sufficiently long to allow a short-range wireless beacon receiver device (P1), when being in a passive mode, being in range of the beacon region and having received the first transmission of the beacon signal, to receive and react (S34) on the second transmission of the beacon signal.

Abstract: The present invention generates a correlation function having a clear peak even in an environment with a high ambient noise level. This correlation function generation device is provided with a plurality of input signal acquisition units for acquiring waves generated by a wave source as input signals, a conversion unit for converting the plurality of input signals acquired by the input signal acquisition units into a plurality of frequency-domain signals, a cross-spectrum calculation unit for calculating a cross spectrum on the basis of the frequency domain signals, frequency-specific cross-spectrum calculation units for calculating cross spectrums for each frequency on the basis of the cross spectrum, and an integrated correlation function calculation unit for calculating an integrated correlation function on the basis of the frequency-specific cross spectrums.

Abstract: There is provided a method and/or an apparatus for time of arrival, TOA, measurements. One method includes: performing, at a sample resolution, a correlation process on a received measurement signal to achieve a measurement correlation function; determining a peak sample and correlation data of at least one additional sample preceding and/or following the peak sample in the measurement correlation function; determining a TOA and/or distance on the basis of the peak sample and correction data acquired by at least the correlation data of the at least one additional sample preceding and/or following the peak sample and pre-assigned configuration data associated to the transmission channel acquired at a subsample resolution.

Abstract: A radio localization system and a method for determining an orientation of an object are disclosed. The radio localization system comprises a first transceiver configured for being attached to an object and one or more second transceivers. The first transceiver is configured for measuring one or more characteristics of a radio signal received from a second transceiver and/or the one or more second transceivers are configured for measuring one or more characteristics of a radio signal received from the first transceiver. Furthermore, the radio localization system comprises processing means configured for determining an orientation of the object based on a radiation pattern and/or a spatial absorption pattern associated with the first transceiver as attached to the object, and one or more measured characteristics of one or more received radio signals.

Abstract: Methods, systems, and computer program products for determining transit routes through crowd-sourcing, for determining an estimated time of arrival (ETA) of a vehicle of the transit route at a given location, and for providing predictive reminders to a user for catching a vehicle of the transit route. A server receives signal source information about wireless signal sources detected by user devices, including information about a first wireless signal source detected by some devices. The server determines that the first wireless signal source is moving. The server determines that the first wireless signal source is associated with a public transit route upon determining that the signal source information satisfies one or more selection criteria. The server stores information associating the first wireless signal source with the public transit route as transit movement data corresponding to the public transit route.

Abstract: Disclosed is an underwater source node positioning method, which includes the specific steps: (1) placing distributed underwater receiving nodes, the source node transmitting a pulse signal, and the receiving nodes receiving the pulse signal sent by the source node; (2) processing the signal of each receiving node; (3) according to a multipath signal received by each receiving node, performing parameter estimation of the position of the source node, specifically: (3-1) calculating a path length of each path; (3-2) calculating a delay difference between each path and a direct path; (3-3) calculating the signal received by each receiving node; (3-4) performing mesh search matching to obtain the position of the source node. Compared with the conventional method, the present invention requires fewer receiving nodes and does not require accurate clock synchronization of signals. The present invention utilizes multipath signals propagated by signals to enable more accurate positioning of the source nodes.

Abstract: To make it possible to estimate the position of a sound source resulting from a wearing displacement, even in the case where the wearing displacement occurs in a wearable device. A sound source position estimation device according to the present disclosure includes: a spectrum acquisition unit configured to acquire a frequency spectrum of a sound source on the basis of a sound obtained by a plurality of microphones provided for a ring-like wearable device; a distance computing unit configured to compute respective distances from the plurality of microphones to the sound source on the basis of the frequency spectrum; and a sound source position computing unit configured to, approximating the ring-like wearable device to a circle and assuming that the sound source is located on a cylindrical surface including the ring-like wearable device, obtain an intersection between the cylindrical surface and spherical surfaces whose radii are the respective distances to compute a position of the sound source.