Abstract: An object detection device detecting an object behind a host vehicle includes a segment information acquisition unit and a segment determination unit. The segment information acquisition unit acquires segment information regarding a generation result of a segment, the segment being generated based on detection information from a ranging sensor, the segment forming a region corresponding to a candidate for a detection result of the object. The segment determination unit determines whether the segment corresponds to a towed object for the host vehicle based on the segment information. The segment determination unit performs a towing object determination based on relative positions of a first reference point for determination within the region and a second reference point for determination relative to the host vehicle, the second reference point for determination being at a position in or on the region that is different from the first reference point for determination.

Abstract: A guidance and navigation system for an aircraft includes: a GNSS receiver configured to receive GNSS signals, as well as SBAS signals in at least one SBAS service area, these signals including GNSS and SBAS messages provided with at least one authentication information item encrypted by means of a private key, and the receiver comprising a signal processing module provided with a module for extracting and for transmitting said messages; and a device (DD) for extracting said at least one authentication information item for the messages, which is transmitted by the signal processing module and for decrypting it, by means of a public key, configured to output at least one validity/invalidity information item for the messages received.

Abstract: A system and a method are disclosed for processing carrier phase measurements. Such a process includes detecting one or more carrier phase discontinuities associated with a raw carrier phase; compensating the raw carrier phase based on an accumulation of each carrier phase discontinuity of the one or more carrier phase discontinuities; and generating a net compensated carrier phase including the compensation to the raw carrier phase.

Abstract: A charged particle beam detector may include a plurality of sensing elements, each sensing element being connected to a dedicated array of signal detection cells. Each signal detection cell may include a solid state current controlling device configured to rapidly extract charge from the sensing element during a detection event. Each signal detection cell may further include a simplified architecture that automatically enables the next signal detection cell once a valid detection happens. The detection cell may store the detection signal until a controller is ready to read the signal out. Thus, each detection cell may be enabled in rapid succession to receive and store a signal with a simple and robust architecture.

Abstract: The C-A-R-E Metal Detector forms an upside-down U, starting at the bottom of the door frame, climbing to the top, cutting across the top, and descending to the other side, which creates an electromagnetic field. The system is used in buildings with doors. If an individual passes through the device with a gun, the gun is recognized and an initial signal is transmitted to the second sensor, which alerts the security system.

Abstract: Disclosed is a ground detection method for pipe damage based on alternating electromagnetic excitation, including the following steps: collecting basic information of a steel pipe, including a dimension, a burial depth, and material of the pipe; determining an excitation frequency; calibrating a basic electromagnetic signal intensity; detecting pipe damage; classifying and grading the pipe damage for identification by electromagnetic signal waveform, synergistic variation characteristics between different components, and a pipe damage degree quantitative calculation model, determining a pipe failure risk on the basis of regional gratings, and providing corresponding maintenance recommendations. A more accurate and efficient solution is provided for non-excavation ground detection of pipes.

Abstract: A computer implemented method for simulating fluid flows in a reservoir geological formation includes determining a first set of connected cells, referred to as thin skeleton, based on a reservoir grid, determining, based on the reservoir grid, a second set of connected cells, referred to as thick skeleton, wherein the thin skeleton is included in the thick skeleton, determining geological property values of portions of the reservoir geological formation represented by the thin skeleton, determining at least one volume correction factor by comparing the thin skeleton and the thick skeleton, and simulating fluid flows in the portions of the reservoir geological formation represented by the thin skeleton, by using the geophysical property values and the at least one volume correction factor.

Abstract: The present invention relates to a technique for manufacturing a metasurface fabricated by an imprinting process with improved efficiency, and more particularly, to a technical concept of fabricating an efficiency-enhanced metasurface by forming nanoantennas using a polymer-based imprint resin and subsequently coating the surface with a high-refractive-index material. According to one embodiment, a method for fabricating a metasurface may comprise: mixing nanoparticles of a nanoantenna material with a photocurable polymer or a thermosetting polymer and applying the mixture onto a substrate; imprinting the photocurable polymer or the thermosetting polymer with an imprint stamp having a surface relief structure and a predetermined pattern to form a structure of the photocurable polymer or the thermosetting polymer on the substrate and curing the structure; and coating a high-refractive-index material on a surface of the cured structure by a deposition process.

Abstract: A patterned lens with abrasion resistance having a base layer hard coat and a top hard coat. The base layer hardcoat may be formed on a film or sheet and used in molding the patterned lens. The top hard coat may be applied after molding.

Abstract: An object of the present invention is to provide an optical sensor system that can be miniaturized, thinned, and improved in designability by using one opening portion, using an optical element that separates wavelengths of an incident ray to guide only a specific wavelength, and causing each sensor to sense the guided light. The object is achieved by an optical sensor system including at least a light guide substrate, a diffraction element 1 that separates incident ray into rays of at least two wavelengths, a diffraction element 2 that diffracts the rays separated by the diffraction element 1, and a plurality of sensors that respectively sense a plurality of rays separated by the diffraction element 1.

Abstract: An optical laminate is provided that suppresses peeling of an optical functional layer from a support due to contraction. The laminate includes a support having a thermal expansion coefficient of less than 1×10?5/° C. and an optical functional layer formed of a liquid crystal composition with an in-plane rotating optical axis alignment pattern. Edge surfaces of the support and the optical functional layer are flush. An edge surface covering layer is provided to cover a region corresponding to an interface between the support and the optical functional layer on the edge surface. When viewed perpendicular to a main surface, the covering layer extends along each side from corner portions over at least 10% of a side length, thereby improving adhesion and durability.

Abstract: A quantum memory device includes: a waveguide configured to spatially confine paths of photons therein; a memory cell that includes a micro-ring resonator (MRR), a frequency tuner, and a quantum memory material portion, wherein the MRR includes a first segment that is parallel to a segment of the waveguide, wherein the frequency tuner is configured to modulate a photon resonance frequency in the MRR by modifying an effective refractive index within, or around, a second segment of the MRR, and wherein the quantum memory material portion includes a quantum memory material having a ground state and an excitation state that stores photons therein and located within or on a third segment of the MRR; and a control circuit configured to modulate the photon resonance wavelength in the MRR during a first step of a photon capture operation to match a predefined wavelength, and to generate captured photons in the MRR.

Abstract: An assembly for expanded beam coupling a fiber array unit (FAU) to a photonic integrated circuit (PIC) is provided. The assembly comprises the photonic integrated circuit (PIC), a PIC micro lens array attached to the photonic integrated circuit, and the FAU. The FAU comprises one or more grooves, with each of the groove(s) being configured to receive a fiber therein. The assembly also includes an FAU micro lens array attached to the FAU, and the FAU micro lens array is offset from the PIC micro lens array by a first distance. The assembly also includes at least one alignment feature configured to control an angular alignment of the PIC micro lens array relative to the FAU micro lens array.

Abstract: An optical coupling apparatus, a fiber array unit, and a method for assembling the fiber array unit are provided. The optical coupling apparatus includes a coupling unit and a fiber array unit detachably connected to the coupling unit. The coupling unit includes a connecting base and a waveguide device disposed on the connecting base. The fiber array unit includes a ferrule body, a holding structure disposed in the ferrule body, and a plurality of optical fibers. The holding structure includes a front holding block and a guide holding block attached to the front holding block. The front holding block defines a plurality of front passages, the guide holding block defines a plurality of guide passages arranged in alignment with the front passages, and the optical fibers sequentially pass through the guide passages and front passages.

Abstract: A detachable optical fiber connector system includes a base plate and a photonic integrated circuit chip disposed on the base plate, with a first lens array disposed on the photonic integrated circuit chip. The system also includes a first plug component rigidly attached to the photonic integrated circuit chip. The first plug component includes a first receiver region and a second receiver region. The system also includes a fiber array unit that includes a plurality of optical fibers, with a second lens array disposed on the fiber array unit. The system includes a second plug component rigidly attached to the fiber array unit. The second plug component includes a first alignment pin and a second alignment pin configured to respectively insert into the first receiver region and a second receiver region of the first plug component, such that the second lens array is optically coupled with the first lens array.

Abstract: The laser module comprises a plurality of subcarriers 20, a plurality of laser elements 30 installed on the respective main surfaces of the plurality of subcarriers 20, and an optical waveguide substrate 40 having an optical waveguide layer 50 on its main surface, the optical waveguide layer 50 having an optical waveguide 51 for guiding the laser light respectively emitted from the plurality of laser elements 30. The emission surface 50C of the optical waveguide layer 50 is inclined obliquely with respect to a plane perpendicular to the extension direction of the optical waveguide 51 at the emission surface 50C.

Abstract: A method includes detecting, by an atomic receiver, incident electromagnetic (EM) radiation comprising an incident EM frequency and an incident EM phase, and generating, by the atomic receiver and based on the detected incident EM radiation, a signal indicative of the incident EM phase, wherein the atomic receiver generates the signal without the use of a local oscillator.

Abstract: A sulfur detector may include a sulfur compound conversion unit configured to convert a sulfur-containing compound into hydrogen sulfide, and a sensor unit configured to detect the hydrogen sulfide.

Abstract: The present disclosure relates to the technical field of salinity prediction and management of tidal reaches and provide a method and system for predicting and managing salinity of tidal reaches based on random forest and empirical mode decomposition. The method includes: acquiring dry season data; acquiring mutual information corresponding to different lag times according to the dry season data; establishing a tidal reach salinity prediction model according to the dry season data and the mutual information corresponding to the different lag times; and obtaining tidal reach salinity prediction information according to the tidal reach salinity prediction model, such that the tidal reach salinity prediction information can be used for decision-making in dispatching upstream reservoirs to increase discharge, closing intake gates and activating backup water sources, and optimizing industrial and domestic water-use scheduling along the riverbanks to ensure water supply safety.

Abstract: An apparatus is disclosed herein that includes a spatial filter having a plurality of apertures and a collimating lens array having a plurality of lenses configured to collected light emanating from the spatial filter and collimate the collected light in a common direction.