Abstract: Disclosed here are system, apparatus, article of manufacture, method and/or computer program product embodiments for track association. An embodiment operates by receiving a first set of track identification data from a first tracking system. The first set of track identification data is associated with a global track identifier (GID). The first set of track identification data associated with the GID is broadcasted to the first tracking system and a second tracking system. A second set of track identification data is received from the second tracking system. The second set of track identification data identifies any tracks of the second tracking system that match the first set of track identification data. The GID is associated with the second set of track identification data.

Abstract: A front end for a radar system and method of operation are described. A timing circuit controls operation of a transmitter circuit and a receiver circuit and outputs a valid data signal indicating whether the receiver circuit will be receiving a reflected radar signal. A converter converts a received radar signal and outputs digital data. A serialising circuit receives the digital data and supplies a serial data stream including the digital data for a data processing device. The valid data signal is also communicated to the converter to cause the converter to output a bit pattern corresponding to a code word when the valid data signals indicates that the receiver circuit will not be receiving the reflected radar signal and to output a bit pattern corresponding to a data word including radar data when the valid data signals indicates that the receiver circuit will be receiving the reflected radar signal.

Abstract: The present invention relates to a method for removing a noise tone in a digital region of an imaging radar receiver, an imaging radar receiver therefor, and a program recording medium. A method for removing a noise tone in a digital region of an imaging radar receiver using a D-ramping structure according to an embodiment of the present invention is characterized by comprising the steps of: (a) extracting a noise tone location of a D-ramped image signal; (b) selecting a noise tone to be removed from the extracted noise tones using step (a); and (c) removing the selected noise tone of step (b) from source data.

Abstract: A system includes a controller that includes a processor and a memory. The processor executes computer-executable instructions stored in the memory to operate the controller. The instructions cause the controller to determine at least two beam patterns for separate transmit beams that operate within the field of regard to be scanned by a Radio Detection and Ranging (RADAR) beam generator. The instructions also cause the controller to generate beam pattern commands to the RADAR beam generator to generate the beam patterns. The beam pattern commands specify a pointing direction for each of the separate transmit beams that operate within each portion of the field of regard.

Abstract: A radar system includes an array antenna including antenna elements that each output a reception signal in response to one or plural arriving waves, and a signal processing circuit in which a learned neural network has been established. The signal processing circuit receives the reception signals, inputs the reception signals or a secondary signal generated from the reception signals to the neural network, performs computation by using the reception signals or secondary signal and learned data of the neural network, and outputs a signal indicating the number of arriving waves from the neural network.

Abstract: Techniques are described for implementation of the requirement of Resolution 612 of International Telecommunications Union that oceanographic radar systems broadcast a Morse-coded call sign for station identification at least once every 20 minutes.

Abstract: An ultrasound beamformer architecture performs the task of signal beamforming using a matrix of analog random access memory cells to capture, store and process instantaneous samples of analog signals from ultrasound array elements and this architecture provides significant reduction in power consumption and the size of the diagnostic ultrasound imaging system such that the hardware build upon this ultrasound beamformer architecture can be placed in one or few application specific integrated chips (ASIC) positioned next to the ultrasound array and the whole diagnostic ultrasound imaging system could fit in the handle of the ultrasonic probe while preserving most of the functionality of a cart-based system. The ultrasound beamformer architecture manipulate analog samples in the memory in the same fashion as digital memory operates that can be described as an analog store—digital read (ASDR) beamformer. The ASDR architecture provides improved signal-to-noise ratio and is scalable.

Abstract: An ultrasonic transducer having a flexible printed circuit board with a thick metal layer and a manufacturing method thereof are disclosed. The ultrasonic transducer, according to an embodiment of the present invention, comprises: an active element that generates an ultrasonic signal, wherein the active element has a thickness of ¼? or less at the center frequency of the generated ultrasonic signal; and a flexible printed circuit board that includes a metal layer with a predetermined thickness, which is formed on one surface of the active element and is electrically connected to the active element, wherein the metal layer blocks ultrasonic waves that propagate in an opposite direction to a predetermined travel path of the ultrasonic waves.

Abstract: Lidar return data is fused early with camera information. In one embodiment, a voxel is detected in a frame of a lidar corresponding to an external scene. The voxel is mapped to a patch in a frame of a camera of the external scene corresponding to the voxel. The patch has a plurality of pixels. Each pixel has a plurality of color values. The voxel is augmented with the patch of pixels and the augmented voxel is delivered to a perception engine.

Abstract: A distance measurement device includes an imaging unit which captures a subject image formed by an imaging optical system forming the subject image indicating a subject, an emission unit which emits directional light as light having directivity along an optical axis direction of the imaging optical system, a light receiving unit which receives reflected light of directional light from the subject, a derivation unit which derives a distance to the subject based on a timing at which directional light is emitted by the emission unit and a timing at which reflected light is received by the light receiving unit, and a control unit which performs control such that at least a part of an imaging period by the imaging unit overlaps at least a part of a distance measurement period by the emission unit, the light receiving unit, and the derivation unit.

Abstract: An image ranging system has a light source module having a light source diode and a light source lens, and an image sensing module, placed near the light source, having an image sensing device and an image sensing lens. An optical signal emitted from the light source diode passes through the light source lens with a luminous intensity profile which is characterized by intensity I1 and then reaches an object. A reflection signal is generated by the object. The relationship between the intensity I1 and the emission angle ? of the optical signal is I1=1/cos7 ?. The reflection signal into the image source lens has an incident angle ? the same as the emission angle of the optical signal, and images the object onto the image sensing device. The ratio of the height of object image to the effective focal length of image sensing lens is proportional to sin ?.

Abstract: A camera system includes a camera unit for capturing still or moving images of an object. The camera unit is adjustable in respect of at least one parameter relevant to the capture of the images based on a measurement signal. A measuring unit captures a distance between the object and the camera unit and includes a laser transceiver for emitting a laser signal and receiving a laser signal reflected by the object. An evaluation unit coupled to the laser transceiver provides the measurement signal. The measurement signal indicates the distance between the object and the camera unit. A lens system has at least two spaced apart lenses. The laser signal emitted by the laser transceiver passes through the lens system. At least one of the lenses is arranged in movable fashion such that the distance between the lenses is variably adjustable parallel to the laser signal transmission direction.

Abstract: A method in a lidar system for scanning a field of regard of the lidar system is provided. The method includes identifying, within the field of regard, a ground portion that overlaps a region of ground located ahead of the lidar system; causing a light source to emit pulses of light; scanning at least a portion of the emitted pulses of light along a scan pattern contained within the field of regard, including adjusting a scan parameter so that at least one of a resolution or a pulse energy for the ground portion of the field of regard is modified relative to another portion of the field of regard; and detecting at least a portion of the scanned pulses of light scattered by one or more remote targets.

Abstract: An optical phased array formed of a large number of nanophotonic antenna elements can be used to project complex images into the far field. These nanophotonic phased arrays, including the nanophotonic antenna elements and waveguides, can be formed on a single chip of silicon using complementary metal-oxide-semiconductor (CMOS) processes. Directional couplers evanescently couple light from the waveguides to the nanophotonic antenna elements, which emit the light as beams with phases and amplitudes selected so that the emitted beams interfere in the far field to produce the desired pattern. In some cases, each antenna in the phased array may be optically coupled to a corresponding variable delay line, such as a thermo-optically tuned waveguide or a liquid-filled cell, which can be used to vary the phase of the antenna's output (and the resulting far-field interference pattern).

Abstract: A tracking device including an image sensor, a light source and a processor is provided. The image sensor senses reflected light or scattered light formed by the light source illuminating a work surface. The processor calculates a trace of the tracking device according to one of the reflected light and the scattered light that generates more apparent image features so as to increase the adaptable work surfaces.

Abstract: An information processing device according to one aspect of the present disclosure is provided with an obtaining unit which obtains a speckle image obtained by imaging an interference state of reflection light of light obtained when irradiating an object with coherent light, a distance measuring unit which measures a distance to the object, a measuring unit which measures a movement amount of the obtained speckle image, and an arithmetic unit which performs an arithmetic operation of relative displacement amounts of surfaces of a plurality of objects on the basis of movement amounts of speckle images corresponding to the plurality of objects at different distances from an object plane on which the speckle image appears and measured distances to the objects. The present disclosure is applicable to an audio detecting system, for example.

Abstract: A specific implementation of the method includes: constructing a reflectance map based on a position and an Euler angle, obtained through a global pose optimization and used for constructing a reflectance map, of a center of a laser radar corresponding to each frame laser point cloud used for constructing the reflectance map. This implementation implements the level-by-level pose optimization of key frame laser point clouds, sample frame laser point clouds, regular frame laser point clouds selected from laser point clouds used for constructing a reflectance map, to obtain an accurate position and Euler angle, used for constructing the reflectance map, of a center of the laser radar corresponding to each frame laser point cloud used for constructing the reflectance map, so that accurate coordinates of laser points in each frame laser point cloud used for constructing the reflectance map in a world coordinate system can be obtained.

Abstract: A method for controlling at least a first vehicle sensor includes receiving sensor data generated by one or more vehicle sensors that are configured to sense an environment through which the vehicle is moving, and identifying, based on the received sensor data, one or more current and/or predicted positions of one or more dynamic objects that are currently moving, or are capable of movement, within the environment. The method also includes causing, based on the current and/or predicted positions of the dynamic objects, an area of focus of the first sensor to be adjusted, at least by causing (i) a field of regard of the first sensor, and/or (ii) a spatial distribution of scan lines produced by the first sensor, to be adjusted.

Abstract: The invention is directed to a device and method for conducting measurement of a Doppler shift caused by molecular and aerosol movement while simultaneously providing measurement of temperature using LIDAR. The device incorporates a light source; and a Fabry-Perot etalon having a resonant cavity formed with two plane parallel reflecting surfaces, wherein the light source is positioned relative to the a Fabry-Perot etalon such that light is injected into a plane parallel resonant cavity of the Fabry-Perot etalon at an angle of incidence other than normal to the reflecting surfaces. The Fabry-Perot etalon may be formed with each of the parallel reflecting surfaces having different reflectivities. The light source may be positioned to direct the light to bypass a first reflective surface of the plane parallel resonator cavity, and/or implemented using a divergent light source.

Abstract: A control device is provided with: a position acquisition section for acquiring a current location; an information acquisition section for acquiring, from a specific device, device position information including a device position indicating the position of the specific device; a storage control section for storing the current position of the control device into a nonvolatile storage device; and a control execution section for executing driving assist control based on a current-time position of the control device and the device position information. The control execution section is provided with: a distance calculation section for calculating a distance between the device position and the stored position; and a distance determination section for determining whether or not the device-to-device distance is smaller than a distance threshold which is a prescribed distance.

Abstract: Aspects of the subject disclosure may include, for example, a positioning system for use with a corresponding one of a plurality of UAVs, the positioning system operable to receive at least one Low Bit Rate (LBR) signal that includes satellite location data from at least one satellite via a receiver of the UAV. Current location data is generated based on the at least one LBR signal. A global positioning system (GPS) signal is generated based on the current location data for transmission, via a transmitter of the UAV, for reception by a GPS receiver. Other embodiments are disclosed.

Abstract: A method of triggering an action includes: determining that a mobile device is under water by: determining that an amplitude of a satellite positioning system (SPS) signal, or a wireless communication signal, or a combination thereof, received by the mobile device is below a threshold amplitude; or comparing data from a motion sensor of the mobile device with motion sensor data characteristic of entering water; or a combination thereof; determining that the mobile device has an action-inducing relationship to water; and taking the action in response to determining that the mobile device has the action-inducing relationship to water.

Abstract: A position is determined using GNSS (Global Navigation Satellite Systems) with an antenna assembly having a number of antennas that are oriented with different direction vectors. Antenna-received signals are supplied to an evaluation assembly, which includes GNSS receivers and an evaluation device. The antenna-received signals are detected with regard to their satellite-related signal-to-noise ratio and, in relation to each satellite, the satellite-specific signal-to-noise ratio measured values that are positively distinguished in their signal-to-noise ratio from other signal-to-noise ratio measured values relating to the same satellite are selected. A satellite-related main direction vector signal is formed from each of the direction vector signals of the antennas. The main direction vector signals are compared with the orientation vector signals that characterize the position of the respective satellites in orbit; in the event of minor deviations a position indication is given.

Abstract: A method for Real Time Kinematic satellite positioning includes receiving navigation satellite carrier signals, receiving phase correction signals from a reference station, calculating a set of integer phase ambiguities from double-differenced measurements of pseudo-range and phase, and calculating a relative position of the mobile receiver from the set of integer phase ambiguities and the double-differenced measurements of pseudo-range and phase.

Abstract: A system or method uses an offset vector to provide seamless switching between a real- time kinematic (RTK) mode and a precise positioning mode. A correction wireless device is adapted to receive, at the reference receiver, a precise signal encoded with precise correction data. A precise positioning estimator of the reference receiver is arranged to determine a precise position based on the measured carrier phase of the received satellite signals and the received precise correction data in a precise correction mode. At the reference receiver, an offset module can determine a base offset vector between the precise position and a reference RTK position for the reference receiver. At the reference receiver, a wireless communications device is capable of transmitting, via an RTK signal, RTK correction data.

Abstract: A radiation exposure system having a beam source is provided. The system further includes a variable thickness degrader, positioned between the beam source and an object to be exposed, for providing varying degrees of degradation to a radiation beam emitted from the beam source onto the object. The system also includes a set of detectors, positioned between the variable thickness degrader and the object, for receiving and measuring only a portion of the radiation beam remaining after the degradation of the radiation beam by the variable thickness degrader.

Abstract: This method and system provide an imaging system for producing static and dynamic images from electromagnetic radiation such as x-rays and high-energy electrons. The detector includes a top electrode layer, a photoconducting layer and a bottom electrode layer. Within the bottom electrode layers are a set of pixel circuits for sensing the radiation. The photoconducting layer has a thickness at least three times greater than the pitch of one of the individual pixel circuits.

Abstract: A circuit for counting photons, including: an input terminal intended to be connected to a detector of ionising radiation; an analogue stage for generating a pulsed signal, each pulse of which has an amplitude proportional to the energy released by an interaction of at least one photon in the detector; and a digital stage including: at least one first comparator for comparing the amplitude of the pulses to a first threshold; a differentiator circuit for determining periods in which the derivative of the pulse signal is of a given sign; at least one first logic gate for combining the outputs of the first comparator and the differentiator circuit; and at least one first counter for counting the number of pulses present on the output of the combining element.

Abstract: The invention relates to a correction device (8) for a radiation detector (2) including detector elements each for detecting incident photons. The correction device (8) is configured to read detection signals representative of an incident photon flux detected by the detector elements for different incident photon fluxes, and an evaluation unit (11) configured to determine for each detector element a dead time of the detector element and a parameter representative of an effective area of the detector element on the basis of a collective evaluation of the detection signals of the respective detector element. Further, the correction device (8) is configured to determine for each detector element correction parameters to compensate for differences in the effective areas and in the dead times of the detector elements on the basis of the determined parameters representative of the effective area and the determined dead times of the detector elements.

Abstract: A detector is disclosed for detecting X-ray and/or gamma radiation, including a scintillator element for converting the X-ray and/or gamma radiation into light. The scintillator element has at least one side surface, an upper side and a lower side, a first photodiode on the lower side of the scintillator element. The detector further includes an electronic evaluation device, a light source designed to illuminate the scintillator element, and a light-impermeable housing which surrounds the scintillator element, the first photodiode, the electronic evaluation device and the light source.

Abstract: Methods, systems, and apparatuses are disclosed for conducting reconnaissance marine seismic surveys. In one example method of acquiring a marine seismic survey, a plurality of streamers are towed behind an acquisition vessel, the plurality of streamers defining a swath. A source is towed behind the acquisition vessel, and at least one other source is towed outside of the swath of streamers.

Abstract: An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a platform; a coil for measuring EM signals; and first to third suspension mechanisms located between the platform and the coil so that the coil oscillates relative to the platform, and the first to third suspension mechanisms attenuate motion induced noise introduced by towing the receiver system above ground.

Abstract: A method for making gain compensated electromagnetic logging measurements of a subterranean formation includes rotating an electromagnetic logging tool in a subterranean wellbore. The logging tool includes a transmitter having at least one transmitting antenna axially spaced apart from a receiver having at least one receiving antenna. Electromagnetic waves are transmitted into the subterranean wellbore using the at least one transmitting antenna. Voltage measurements corresponding to the transmitted electromagnetic waves are received at the receiving antenna. The voltage measurements are processed to compute real and imaginary directional resistivity measurement quantities.

Abstract: An antenna assembly includes a bobbin positionable about an outer surface of a tool mandrel, and a coil wrapped about an outer bobbin surface of the bobbin and extending longitudinally along at least a portion of the outer bobbin surface. A plurality of ferrites are positioned within a groove defined in the outer surface of the tool mandrel, and the plurality of ferrites extend circumferentially about the outer surface and interpose the tool mandrel and the coil.

Abstract: The present disclosure provides systems and methods for occupancy detection. In various embodiments, the occupancy detection system includes a server configured to wirelessly communicate with one or more occupancy detectors. Each occupancy detector includes or is associated with an object holder. The object holder can have one of two occupancy states: an occupied state in which an object occupies the object holder or an unoccupied state in which no object occupies the object holder. The occupancy detector includes a sensor and a controller configured to use sensor feedback to determine when the object holder changes occupancy states from the occupied state to the unoccupied state or from the unoccupied state to the occupied state. When the controller determines that the object holder changes occupancy states, the controller generates occupancy data that reflects this changed state and sends it to the server.

Abstract: The present invention relates to an optoelectronic sensor system for detecting objects in a monitored zone having a light transmitter for transmitting light into the monitored zone along a transmitted light path, having a light receiver for receiving received light from the monitored zone that is remitted along a received light path in the direction of the light receiver from an object to be detected in the monitored zone or a reflector bounding the monitored zone, and having an objective arrangement arranged in front of the light transmitter and the light receiver. The transmitted light path and the received light path run spaced apart from one another at least in part sections facing the light transmitter and the light receiver respectively.

Abstract: Techniques are disclosed relating to control of seismic sources such as marine vibrators. According to some embodiments, iterative learning control (ILC) systems may be used to control such seismic sources. According to some embodiments, local sensor(s) placed in, on, or near a seismic source and/or remote sensors placed in the far-field region may be used to determine a transfer function for the seismic source for such ILC control.

Abstract: In-situ calibration of a resistivity logging tool is accomplished using a variety of methods in which deep measurement signals are calibrated using acquired and simulated measurement signals.

Abstract: Systems and methods for a hybrid approach to assisted history matching in large reservoirs based on a reservoir model built using connectivity between each production well and each corresponding injection well, aquifer or gas cap.

Abstract: The invention provides a method for predicting a reservoir reform volume after vertical well volume fracturing of a low-permeability oil/gas reservoir. The method sequentially includes the following steps: (1) calculating an induced stress produced by a hydraulic fracture in a three-dimensional space; (2) calculating a stratum pore pressure obtained after leak-off of fracturing fluid; (3) calculating a stratum pore elastic stress obtained after the leak-off of the fracturing fluid; (4) overlapping the stress fields obtained in the step (1), (2) and (3) with an original crustal stress field to obtain a new crustal stress field, and calculating the magnitude and direction of the overlapped three-direction effective principal stress in the reservoir space; (5) calculating an open fracturing determination coefficient M of a natural fracture in the reservoir space and a shear fracturing area determination coefficient S of the natural fracture.

Abstract: The calculation of the variance of a correlation coefficient matrix for a photovoltaic fleet can be completed in linear space as a function of decreasing distance between pairs of photovoltaic plant locations. When obtaining irradiance data from a satellite imagery source, irradiance statistics must first be converted from irradiance statistics for an area into irradiance statistics for an average point within a pixel in the satellite imagery. The average point statistics are then averaged across all satellite pixels to determine the average across the whole photovoltaic fleet region. Where pairs of photovoltaic systems are located too far away from each other to be statistically correlated, the correlation coefficients in the matrix for that pair of photovoltaic systems are effectively zero. Consequently, the double summation portion of the calculation can be simplified to eliminate zero values based on distance between photovoltaic plant locations, substantially decreasing the size of the problem space.

Abstract: Distributed systems and methods for the automatic monitoring and reporting of data relating to the chemistry and flow of stormwater (i.e. stormwater data) are presented. Multiple fluid sensor devices are exposed to stormwater via positioning the sensor devices in locations of interest. The sensor devices are arranged in self-healing mesh networks. The sensor devices are enabled to acquire stormwater data indicating various fluid properties that are desired to be monitored. A sensor device is further enabled to transmit its acquired stormwater data, either directly or indirectly, to one or more remote computing devices that is hosting a stormwater monitoring application (SMA). The SMA is enabled to process and analyze the stormwater data. The SMA generates measurements and reports based on the processed and analyzed stormwater data.

Abstract: Provided is a lighting system comprising at least one lightning detection site including a local controller. The lightning detection site comprises one or more sensors configured for detecting data associated with at least one from the group selected from sound, electromagnetic field, and ambient light flashes. The local controller is configured to analyze the detected data to determine probability that a lightning strike occurred.

Abstract: The present invention relates to an anti-reflective film exhibiting one or more peaks at a scattering vector (qmax) of 0.0758 to 0.1256 nm?1, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.

Abstract: Described herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles dispersed in the binder resin. The hollow and solid inorganic particles are dispersed in the low-refractive layer such that the amount of the solid inorganic nanoparticles positioned close to an interface between the hard coating layer and the low-refractive layer is larger than that of the hollow inorganic nanoparticles. Also described is a manufacturing method of the anti-reflective film including: applying a resin composition containing a photopolymerizable compound or a (co)polymer thereof, a fluorine-containing compound including a photoreactive functional group, a photoinitiator, hollow inorganic nanoparticles, and solid inorganic nanoparticles on a hard coating layer, and drying the applied resin composition at a temperature of 35° C. to 100° C.; and photocuring the dried resin composition.

Abstract: Substrates with lenses having lenses disposed therein are aligned with high accuracy. A stacked lens structure has a configuration in which substrates with lenses having a lens disposed on an inner side of a through-hole formed in the substrate are direct-bonded and stacked based on an alignment mark. The alignment mark is formed simultaneously with the through-hole. The present technique can be applied to a camera module or the like in which a stacked lens structure in which at least three substrates with lenses including first to third substrates with lenses which are substrates with lenses in which a through-hole is formed in the substrate and a lens is formed on an inner side of the through-hole is integrated with a light receiving element, for example.

Abstract: A fingerprint recognition sensor includes a plurality of fingerprint recognition units arranged in an array. Each of the fingerprint recognition units includes a base substrate, an image capturing device disposed on one side of the substrate, and a first grating structure and a second grating structure sequentially disposed on the other side of the base substrate, the first grating structure has a first imaging hole at a position opposite to the image capturing device and the second grating structure has a second imaging hole at a position opposite to the image capturing device, and an extending direction of a slit of the first grating structure is perpendicular to an extending direction of a slit of the second grating structure.

Abstract: A piezo-electric material is placed adjacent to the path of the radiation beam such that, when power is applied to the piezo-electric material it rotates into the path of the radiation beam to block it. A smaller and lighter radiation beam shutter therefore results.

Abstract: The present disclosure relates to prismatic retroreflective articles that includes a security mark and to methods of making such articles.

Abstract: A vehicle light assembly includes a housing. A light source is positioned within the housing. A lens is coupled with the housing. The lens defines a first surface and a second surface. A plurality of optical gratings is integrally defined in at least one of the first and second surfaces. The plurality of optical gratings is arranged in a spaced apart configuration.