Abstract: Methods of ultrasound imaging, some of which comprise: generating one or more transmit beams, wherein the boresight of each of the transmit beams points to a direction associated with a target region generating one or more receive beams using a probe (26) comprising a transducer array (30); for each receive beam or group of receive beams, sampling the received signal one or more times, wherein each sample is associated with a certain volume within the target region (“volume-gate”), and wherein multiple space-dependent samples are taken over the probe for each volume-gate; and processing the space-dependent samples, said processing comprising: applying beamforming sample alignment such that each space-dependent sample associated with a volume-gate is aligned; for each aligned volume-gate, computing one or more clutter suppression features, wherein a clutter suppression feature is dependent on the signal variability of the space-dependent samples; for each aligned volume-gate, computing a metric value wherein t

Abstract: In one example, an electronic apparatus comprises a first portion having an ultrasound emitter. The electronic apparatus further comprises a second portion having an ultrasound sensor. The first portion and the second portion are arranged to be movable with respect to each other thereby allowing distance between the ultrasound emitter and the ultrasound sensor to vary. The electronic apparatus further comprises a measurement unit configured to measure current propagation delay of an ultrasound wave from the ultrasound emitter to the ultrasound sensor. The electronic apparatus further comprises a calculation unit configured to calculate current distance between the ultrasound emitter and the ultrasound sensor based on the measured current propagation delay of the ultrasound wave from the ultrasound emitter to the ultrasound sensor.

Abstract: An occupancy detection apparatus and a method for controlling the same are disclosed. The occupancy detection apparatus may include a transmitter including one transmission antenna for outputting a transmission signal, a receiver including a first reception antenna and a second reception antenna, each for receiving a reflected signal corresponding to the transmission signal, and a processor for eliminating a background signal corresponding to a background from each of the reflected signals, and extracting a signal reflected from an occupant from each of the reflected signals by extracting a correlation between the transmission signal and the reflected signal free of the background signal.

Abstract: Radar equipped with a transmission antenna array and with a reception antenna array is provided, the measurement of the height h2 is obtained by estimating the frequency of at least one time-dependent amplitude modulation produced on the reception antenna array, the modulation generated by the interference of the signals received directly from the target and the signals received after reflection on the ground, on the basis of the signals transmitted by the transmission antenna array.

Abstract: Embodiments of the present invention disclose systems and methods for providing an ATC Overlay data link. Through embodiments of the present invention, existing ATC (or other) modulated signals using existing standard frequencies may be utilized to transmit (e.g., from an aircraft transponder) additional information in a manner that does not render the transmitted signal unrecognizable by legacy ATC equipment. Legacy equipment will be able to demodulate and decode information that was encoded in the transmitted signal in accordance with preexisting standard modulation formats, and updated equipment can also extract the additional information that was overlaid on transmitted signals.

Abstract: A following-start control apparatus includes a following-start controller that causes an own vehicle to so start as to follow a preceding vehicle, when start of the preceding vehicle is detected by a preceding vehicle start detector. The following-start controller includes a road surface gradient information setter that sets an estimated gradient of a road surface, on a basis of traveling environment information obtained by a traveling environment information obtaining unit, a first delay time setter that sets, on a basis of the estimated gradient, a first delay time that is set to be longer for a downward slope and set to be shorter for an upward slope as the estimated gradient becomes greater, and a delayed start controller that sets, as a delay time, a time upon so starting the own vehicle as to follow the preceding vehicle, on a basis of the first delay time.

Abstract: A vehicle according to one embodiment of the present invention includes a radar module configured to receive emergency situation notification information indicating a deteriorating weather condition and an accident occurrence state from a front vehicle positioned ahead, an output unit configured to output the received emergency situation notification information, and a controller configured to control the radar module to transmit the emergency situation notification information including additional information, which is obtained through the radar module, to a rear vehicle positioned behind.

Abstract: An acoustic array system for anomaly detection is provided. The acoustic array system (100) performs a scan (or a progressive scan of frequencies) of a given volume by transmitting one or more signals, and receives one or more reflected signals from objects within the volume. The reflected signals are then amplified and converted to a set of digital signals. Features of the set of digital signals are extracted both in time and frequency domains. The acoustic array system (100) further performs a comparison of these set of digital extracted features with the reflected signals via machine learning techniques. Based on the comparison, the acoustic array system detects one or more anomalies.

Abstract: An ultrasound imaging system (100) includes a transducer array (102) with plurality of transducer elements (200) configured to transmit an ultrasound signal and receive echoes. Transmit circuitry (104) is configured to excite the transducer elements to transmit the ultrasound signal along a propagation direction. Receive circuitry (106) is configured to receive an echo signal produced in response to the ultrasound signal traversing flowing structure in the field of view. A beamformer (112) is configured to beamform the echo signal and produce a single directional signal at a depth. The directional signal is transverse to the propagation direction of the ultrasound signal. A velocity processor (114) is configured to transform the directional signal to produce a corresponding quadrature signal, estimate a depth velocity component and a transverse velocity component at the depth based on the directional signal and the quadrature signal, and generate a signal indicative of the estimate.

Abstract: A method and apparatus for authenticating a radar return signal include: generating an outgoing radar beam; generating a pair of entangled photons comprising a signal photon and an idler photon; combining the signal photon with the outgoing radar beam to generate a combined beam; sending the combined beam towards a target; receiving a return beam; detecting the signal photon from the return beam by a quantum illumination receiver; and making a joint detection with the idler photon.

Abstract: A laser light source; a light sending lens configured to form laser light emitted from the laser light source into a spot shape; a scanner configured to perform irradiation while performing scanning, with the laser light formed into the spot shape, in a horizontal direction and a vertical direction of an area to be measured; a light receiving lens configured to receive reflected light reflected from the area to be measured; a light receiving optical system configured to condense the reflected light received by the light receiving lens, in each of the horizontal direction and vertical direction; and an information generating unit configured to generate, based on a received signal output by the light receiving element, three dimensional information of the area to be measured.

Abstract: The invention comprises: a light-transmission-side lens 12 that shapes a laser beam L emitted from a laser light source 11 into a line shape extending along a horizontal direction X; a scanner 13 that projects the line-shaped laser beam L while scanning the same in a vertical direction Y of a measurement-target area A; a light-reception-side lens 16 that receives reflected light R reflected from the measurement-target area A; a light reception line sensor 18 including a plurality of light reception cells lined up along the horizontal direction X; a light-reception-side optical system 17 that gathers the reflected light R received by the light-reception-side lens 16 toward the light reception line sensor 18, and in which the light-gathering ratio in the vertical direction Y is set so as to be greater than the light-gathering ratio in the horizontal direction X; and an information generation unit 21 that generates three-dimensional information of the measurement-target area A on the basis of a reception signal

Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.

Abstract: To inspect a positioning machine by a laser tracking interferometer that tracks a retroreflector using a laser beam, the positioning accuracy of the positioning machine is evaluated by comparing a distance ?dij,C with a distance ?dij,L measured by the laser tracking interferometer, the distance ?dij,C being acquired by orthogonal projection of the position vectors of measurement points pi and pj measured by the positioning machine to the straight line gk passing through the rotation center M of the laser tracking interferometer.

Abstract: Provided is a disclosure for detection of objects using projected light of one or more frequencies, where the light may be structured or non-structured.

Abstract: Methods and apparatuses to assist a global positioning system (GPS) module to determine GPS position estimates for a wireless communication device is disclosed. Processing circuitry in the wireless communication device determines a potential or an actual inaccuracy in a GPS position estimate obtained from a GPS module. The processing circuitry obtains a set of map vector data stored in or associated with the wireless communication device. The processing circuitry determines a location estimate of the wireless communication device based on at least a portion of the set of map vector data. The processing circuitry provides the location estimate to the GPS module and obtains an updated GPS position estimate from the GPS module, the updated GPS position estimate based at least in part on the location estimate provided to the GPS module.

Abstract: A position and azimuth measurement device capable of measuring geographical coordinates and azimuth angles and a surveying device are provided. The position and azimuth measurement device includes a GNSS device, having a GNSS antenna for obtaining position information thereof; a horizontal rotating section capable of rotating the GNSS antenna horizontally; a leveling section capable of leveling the horizontal rotating section; a horizontal angle detector configured to detect a horizontal angle of the horizontal rotating section; and a control device. The control device causes the GNSS device to continuously obtain the position information while causing the horizontal rotating section leveled by the leveling section to make one full rotation, and computes geographical coordinates and an azimuth angle on the basis of the position information obtained throughout the full rotation.

Abstract: A method for receiving and processing satellite navigation signals includes receiving the navigation signals; converting the navigation signals into digital signals; providing a clock signal to all channels that process the digital signals; generating frequency division signals; selecting a channel frequency division signal from the frequency division signals based on which ADC is used to convert the satellite navigation signals into digital signals; connecting the channel to the ADC; generating code frequency signal and base carrier frequency signal using a net accumulation signal; processing the digital signal in the channel to produce digital quadrature signal components of the digital signal based on the code frequency signal and the base carrier frequency signal; using a tick signal that represents 2N×clock signal as a temporary time scale for control of the channels for determining digital signal phase differences between the channels; and outputting coordinates based on the quadrature components.

Abstract: The operation unit of radiation monitoring equipment reads in a real countable number (this time) and a cumulated countable number (previous time) in a every operational cycle, and judges whether the real countable number (this time) is within a permissible range, if the real countable number (this time) is judged to be within the permissible range, it is judged whether a number of times deviated from the permissible range is equal to zero or not, if the number of times deviated from the permissible range is judged to be equal to zero, a regular processing is performed, if the real countable number (this time) is judged to be out of a permissible range, 1 is added to the number of times deviated from the permissible range and further it is judged whether the added number of times deviated from the permissible range is equal to 1 or not.

Abstract: A SiPM readout circuit includes a front-end circuit having amplifiers coupled to SiPM analog outputs, pixel readout channels coupled to amplifiers provide a timing signal representing gamma ray photon detection in individual SiPM, a block timing channel that creates a summed signal from all SiPMs, and generates a block timing signal and a validation signal, an energy channel that generates a summed energy signal and a two-dimensional position of the gamma ray photon detection in the block, and a control logic/processing circuit that performs a time stamp estimation method. Methods of determining the radiation event timing and a non-transitory computer-readable medium containing computer-readable instructions to implement the methods are disclosed.

Abstract: An apparatus, system, and method involving one or more sparse detectors are provided. A sparse detector may include an array of scintillator crystals generating scintillation in response to radiation and an array of photodetectors generating an electrical signal in response to the scintillation. A portion of the scintillator crystals may be spaced apart by substituents or gaps. The distribution of the substitutes or gaps may be according to a sparsity rule. At least a portion of the array of photodetectors may be coupled to the array of scintillator crystals. An imaging system including an apparatus that may include one or more sparse detectors is provided. The imaging system may include a processor to process the imaging data acquired by the apparatus or system including the one or more sparse detectors. The method may include preprocess the acquired image data and produce images by image reconstruction.

Abstract: TOF-PET detector systems, and methods for imaging photon-emitting samples using the detector systems, are provided. The TOF-PET detector systems use large-area photodetectors with extremely high time-resolution and an approach to data collection and analysis that allows for the use of inexpensive low-density scintillator materials. The TOF-PET detector systems are characterized by their ability to identify, on a statistical basis, the transverse and depth location of the first of the series of energy deposition events that are generated when a gamma photon enters the low-density scintillator material.

Abstract: Described here are systems and methods for optimization techniques for automatically selecting x-ray beam spectra, energy threshold, energy bin settings, and other imaging technique parameters for photon-counting detector computed tomography (“PCCT”). The techniques described here are generally based on subject or object size, material of interest, and location of the target material. Advantageously, the optimizations can be integrated with different PCCT systems to automatically select optimal imaging technique parameters before scanning a particular subject or object.

Abstract: A method and apparatus for reconstructing an incident energy spectrum for a detector are disclosed. In this method, an object to be inspected is illuminated with rays, and then rays transmitted through the object to be inspected are received by the detector to convert the received rays into data of a detected energy spectrum. The incident energy spectrum for the detector is reconstructed based on the data of the energy spectrum using a statistical iterative algorithm with a pre-established detector response function. With the above solution of the embodiments, the incident energy spectrum for the detector can be more accurately acquired, thereby reducing a distortion of the incident energy spectrum caused by the detector.

Abstract: A vehicle hitch or tow bar can be used as an attachment point to a vehicle to provide weight to a seismic source system which includes at least one vibratory seismic source mounted to a shaft of pole and a mechanism for raising and/or lowering the shaft or pole for use in coupling a seismic source to the earth in conjunction with acoustic receivers for determining the lithology and for acoustic imaging of the subsurface of the earth.

Abstract: A reaction mass seismic survey source that is located in an underground casing. The seismic source includes a non-planar base plate; a reaction mass located on the non-planar base plate; and a flextensional element housed in a recess of the reaction mass and configured to vibrate the non-planar base plate when actuated, to generate seismic waves underground.

Abstract: A system for processing seismic data for a geologic formation generated by an array of acoustic transducers responsive to an acoustic source may include a seismic data storage device and a processor. The processor may cooperate with the seismic data storage device to use a volatility measurement model to generate current correlations of data from the array of acoustic transducers based upon a current estimate for at least one of density and velocity of the geologic formation, and compare the current correlations to a threshold. When the current correlations are below the threshold, the processor may update the current estimate for at least one of density and velocity of the geologic formation, and repeat use of the volatility measurement model to generate updated correlations of data from the array of acoustic transducers based upon the updated estimate for at least one of density and velocity of the geologic formation.

Abstract: A method is described for creating a petro-elastic model including receiving, at a computer processor, well log data; computing in situ rock properties; calculating dry frame moduli for a range of porosities based on a rock physics model such as a modified critical porosity model; performing fluid substitutions and computing elastic properties by statistical sampling for the range of porosities; creating a petro-elastic model in a seismic domain; and identifying and producing target hydrocarbon reservoirs based on the petro-elastic model. The method may be executed by a computer system.

Abstract: A system is for processing seismic data for a geologic formation generated by an array of acoustic transducers responsive to an acoustic source. The system may include a seismic data storage device, and a processor cooperating with the seismic data storage device to generate correlations of data from the array of acoustic transducers based upon a current estimate for at least one of density and velocity of the geologic formation, and perform a linear optimization based upon a plurality of different combinations of the correlations to determine a given subset of correlations having a highest objective function associated therewith. The processor may also update the current estimate for at least one of density and velocity of the geologic formation based upon the given subset of correlations.

Abstract: Methods for correcting seismic signals by determining a signature of an outcropping geobody (e.g., a sand dune) from unprocessed seismic data, attenuating the seismic data using a variable gap deconvolution, and performing a surface consistent deconvolution and amplitude correction on the seismic data. A signature associated with the outcropping geobody and corresponding to the geometry of the geobody may be identified from the unprocessed seismic data. The signature may be used in subsequent processing, such for the determination of a variable gap length for a variable gap deconvolution applied to the seismic data. Computer-readable media and systems for correcting seismic signals are also provided.

Abstract: A software defined platform is provided for subsea acoustic applications that utilizes a broadband phased array transducer and a configurable, multi-function software defined transducer that is configurable on the fly to enable various subsea acoustic systems to be achieved in a single unit thus reducing the space required on the vessel and the cost of having such multiple functions.

Abstract: The invention in particular relates to a method for controlling the horizontal position of a seismic cable adapted for acquiring seismic data midwater. The method comprises, based on a deviation observed between the position of the seismic cable and a setpoint horizontal position, a correction of the position of the seismic cable through an adjustment of the forces respectively exerted by lead-in cables on the ends of the seismic cable, the exerted forces simultaneously and each having an axial component and a lateral component relative to the seismic cable at at least one moment of the correction. This allows an easy to implement and relatively precise control of the horizontal position of a seismic cable adapted for acquiring seismic data midwater and kept stationary or quasi-stationary during the data acquisition.

Abstract: A method of performing acoustic logging comprises generating a first acoustic signal from a first source at a first time, wherein the first source is a first distance away from a wellbore wall, and generating a second acoustic signal from a second source at a second time, wherein the second source is a second distance away from the wellbore wall. The difference between the first time and the second time depends on a calibration value.

Abstract: Disclosed herein is an approach to improving the accuracy of signal-peak tracking in acoustic logs by supplementing a semblance method used to detect signal peaks in individual coherence-, correlation- or amplitude-based semblance maps with consistency checks based on rock-physics constraints and/or based on history and/or future data for the signal of interest.

Abstract: A method and apparatus for blending and display of radio frequency in-wall imagery are provided. In the method and apparatus, an RF sensor assembly receives an RF signal for capturing an RF image of one or more objects including an electricity-bearing object disposed in a space behind a surface, a voltage sensor detects a presence of the electricity-bearing object disposed in the space behind the surface and a processor determines the RF image based on the data representing the RF signal, identifies a position of the electricity-bearing object in the RF image based on the data indicating the presence of the electricity-bearing object and a relative position of the sensory field to the RF sensor assembly and generates, based on the RF image, a composite image in which the electricity-bearing object is marked.

Abstract: Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.

Abstract: Methods and apparatuses for geophysical surveying are disclosed. In one embodiment, an airborne vehicle may obtain magnetic measurements in a location around a drilling site. The magnetic measurements may be used to calculate a localized disturbance magnetic field resulting from, for example, solar flares. The localized disturbance magnetic field may be used to calculate a declination value and, thus, a wellbore position with improved accuracy.

Abstract: A rotating magnetic field rangefinder for measuring relative distance in drilling, comprising a permanent magnet steel drill collar (1), an underground detector (2) and a ground interface box (3). The permanent magnet steel drill collar (1) is fixed to the rear part of a drill bit and rotates together with the drill bit to generate a rotating magnetic field to provide a magnetic field signal source. The underground detector (2) comprises two tri-axial fluxgates and three accelerometers. The ground interface box (3) is used for processing the obtained data, and powering the underground detector. The permanent magnet steel drill collar (1) is an obliquely arranged one or a perpendicularly-and-parallelly assembled one. A measuring method for magnetic range measurement is also disclosed.

Abstract: Methods and a system for detecting through casing formation resistivity. A method may comprise inserting an inspection device inside a tube, activating the transmitter coil, recording signals with the receiver coil array, creating a transmitter matrix from an electromagnetic field produced from the transmitter coil, creating a receiver matrix from the recorded signals, and determining a through casing formation resistivity of a target from the transmitter matrix and the receiver matrix. A method may further comprise determining a casing thickness of a target from the transmitter matrix and the receiver matrix. An inspection device may comprise a sensor array comprising a transmitter coil array and a receiver coil array. The inspection device may further comprise a sensor array housing, wherein the sensor array is disposed within the sensor array housing, a memory module, and a differential amplifier.

Abstract: One or more non-transitory machine-readable storage media comprising program code to control activation of an arrangement of transmitting and receiving sensors attached to a tool, wherein controlling activation of the arrangement of transmitting and receiving sensors comprises activating a transmitting sensor having a first tilt angle to generate a transmission signal. The program code is to acquire an acquired signal from a receiving sensor having a second tilt angle, wherein acquiring the acquired signal from the receiving sensor having the second tilt angle is based on the transmission signal inducing at the receiving sensor a magnetic dipole perpendicular to a magnetic field corresponding to the transmission signal from the transmitting sensor having the first tilt angle. The program code is to perform an inversion operation on data to determine one or more properties of a formation.

Abstract: A method of borehole correction for water-based mud includes conveying an induction logging tool along a borehole through a formation, obtaining one or more formation measurements using the tool, obtaining a water-based mud conductivity, performing an oil-based mud inversion on the formation measurements to determine an inverted formation conductivity, calculating a corrected formation conductivity using the water-based mud conductivity and the inverted formation conductivity, and displaying a log based at least in part on the corrected formation conductivity.

Abstract: The present invention provides for an improved scanning process with a stationary X-ray source arranged to generate X-rays from a plurality of X-ray source positions around a scanning region, a first set of detectors arranged to detect X-rays transmitted through the scanning region, and at least one processor arranged to process outputs from the first set of detectors to generate tomographic image data. The X-ray screening system is used in combination with other screening technologies, such as NQR-based screening, X-ray diffraction based screening, X-ray back-scatter based screening, or Trace Detection based screening.

Abstract: A method and system of monitoring for scale compounds that include scale co-contributors of cations and anions. A scale compound can be monitored by measuring gamma ray counts of scale contributors using a spectral gamma ray detector. A scale compound can be identified by identifying an increase in scale co-contributors over time from the gamma ray counts.

Abstract: A method for cement evaluation may include generating a gamma ray, from a radioactive source, into cement disposed between a casing and a geological formation. Photons reflected from the geological formation and the cement are detected on a gamma detector having a collimator. A detector-to-source distance, a collimator angle, and/or a collimator diameter are set to provide an energy spectra independent of the geological formation. The quality of the cement may be determined based on the energy spectra of the detected photons.

Abstract: Based on a relationship between measurement data from at least one sensor and a baseline, a load status of a platform is determined. In response to the determined load status, such as determining that the platform is empty, the baseline is refined using a baseline estimator to produce a refined baseline that can be used to determine a further load status of the platform.

Abstract: Software-based quality control analysis of well log data. At least some of the various embodiments are computer-readable mediums storing a program that, when executed by a processor, causes the processor to read data from a well log, and perform a quality control analysis on the data.

Abstract: A robotic vehicle may be configured to incorporate multiple sensors to make the robotic vehicle capable of collecting, feeding, and uploading weather data into an aggregation agent to form a geospatial map or weather service. In this regard, in some cases, the robotic vehicle may include an onboard vehicle positioning module and sensor network to give the robotic vehicle a collective understanding of its environment, and enable it to autonomously collect and upload weather data to an aggregation agent for corresponding locations.

Abstract: Techniques for improving weather forecasting using model blending and historical global positioning system-radio occultation (GPS-RO) measurements are provided. In one aspect, a method for weather forecasting includes: obtaining historical GPS-RO measurements; determining a refractive index of the atmosphere from the GPS-RO measurements; obtaining historical forecasts from multiple individual numerical weather models from a same given time period as the GPS-RO measurements; statistically correcting the historical forecasts using the refractive index of the atmosphere determined from the GPS-RO measurements; blending the numerical weather models using the statistically corrected historical forecasts to create a blended weather model, wherein the blending is performed to improve a forecast of the refractive index of the atmosphere by the blended weather model; and forecasting primary weather parameters using the blended weather model. Secondary weather parameters (e.g.

Abstract: A base with a low-reflection film includes: a transparent base; a low-reflection film formed on a first principal surface of the transparent base; and a black printed part formed on a part of a second principal surface of the transparent base opposite to the first principal surface, in which a luminous reflectance R of the base with the low-reflection film with respect to incident light from the low-reflection film side is 2% or less in a region of the transparent base having the black printed part, and a ratio R1/R2 between a luminous reflectance R1 of a surface of the low-reflection film and a luminous reflectance R2 at an interface of the black printed part with the transparent base is ? or more.

Abstract: Methods and apparatus are provided for displaying an image to a viewer, for example in a head-mounted display (HMD) application, with reduced visual artifacts such as screen-door effect. A phase optic is disposed between the HMD lens and the user's eye. The optic changes the distribution of the light so the user's eye cannot focus the light better than the sub-pixel distance. The user can therefore not resolve the sub-pixel structure, and the structure therefore appears as one larger pixel, mitigating the screen-door effect. A significant reduction in screen-door effect visual artifacts arising from the periodic structure of the display panel may therefore be obtained.