127 results about "Signal beam" patented technology

An electronic device may be mounted to a main body of a removable case. The case includes a cover that rotates between open and closed positions. The device may convey wireless data and / or a control signal with the removable case over radio-frequency connectors, near-field communications (NFC) coils, connector electrodes, and / or wired data connectors. The removable case may relay the wireless data between the electronic device and a communications satellite in space. The case may include a phased antenna array in the cover. In the open position, the cover may point the phased antenna array towards the sky. The removable case may include beamforming circuitry in the cover and coupled to the phased antenna array. The control signal may control the beamforming circuitry to produce, using the phased antenna array, a signal beam oriented towards the communications satellite.

The embodiment of the invention provides an optical detection device which comprises an imaging assembly and a photoelectric detection device, and the imaging assembly is used for forming an image on an image plane of a to-be-detected area of a wafer. And the photoelectric detection device is used for receiving images and is arranged at the image plane. The photoelectric detection device comprises a light beam separation assembly and a sensor assembly, the light beam separation assembly is used for dividing a continuous first light signal in an image into multiple beams of second light signals, and the light beam separation assembly comprises a microlens array. The sensor assembly is used for receiving multiple beams of second optical signals, and each pixel unit of each sensor in the sensor assembly is used for receiving one beam of second optical signal in the multiple beams of second optical signals. The sensor assembly comprises a single-pixel sensor, and the single-pixel sensor corresponds to one micro lens in the micro lens array; and / or, the sensor assembly comprises a multi-pixel sensor, the multi-pixel sensor corresponds to a plurality of microlenses in the microlens array, and spatial segmentation is beneficial to improving the signal-to-noise ratio.

The invention provides a multi-signal beam-expanding hybrid transmission cabin-penetrating connector, and belongs to the technical field of data transmission, the multi-signal beam-expanding hybrid transmission cabin-penetrating connector comprises a disc shell, two compression nuts, a partition plate nut and an insulator assembly, the two compression nuts are fixed on the periphery of the disc shell in parallel, a fuse is arranged between the two compression nuts, and the partition plate nut is fixed on the periphery of the disc shell. The insulator assembly is arranged in the disc shell, the partition plate nut is located on the periphery of the insulator assembly, the insulator assembly is fixed through the combined action of a key groove in the right side in the disc shell and the partition plate nut on the left side, and a cavity of the disc shell is filled with glue for reinforcement. The insulator assembly comprises a plurality of contacts of different specifications, the insulator assembly is used for transmitting radio frequency coaxial signals, optical fiber signals and power signals, and the plurality of contacts of different specifications are arranged to be of two-end butt joint structures. According to the scheme, the integration level and the signal transmission efficiency of the cabin-penetrating connector are improved, and stable mixed transmission of various signals in the same connector is achieved.

A first network node (10, 400) is configured to be used in a wireless communication network. The first network node (10, 400) determines a modified configuration of reference signal beams of a serving cell of the first network node (10, 400). The first network node (10, 400) sends a first indication (14) to a second network node (20, 400). The first indication (14) comprises a configuration update message describing the modified configuration of reference signal beams of the serving cell.

Embodiments are directed to the association of concurrent tracks across multiple views for sensing objects. A sensing system that employs signal beams to scan paths across an object may be provided such that two or more sensors separately detect signals reflected by the object. Events may be determined based on the detected signals such that the events include pairs of events that correspond to pairs of sensors. Essential matrices may be generated based on the positions of each pair of sensors. The pairs of events associated with the pairs of sensors may be compared based on the essential matrices of the sensors. Scores for the pairs of events may be provided based on the comparison. If a score for a pair of events may be less than a threshold value, each event in the pair of events may be associated with a same location on the object.

Embodiments are directed to the association of concurrent tracks using graph crossings. Signal beams may be employed to scan paths across an object such that sensors separately detect signals from the signal beams reflected by the object. Crossing points may be determined based on a plurality of trajectories that intersect each other during the scan of the object. Graphs may be generated based on the portion of trajectories and the crossing points such that each edge in the graphs corresponds to a crossing point and such that each node in the one or more graphs corresponds to a trajectory. The graphs may be compared to determine one or more matched graphs that may share a common topology. Common trajectories may be determined based on the matched graphs such that each common trajectory may be associated with a same path across the object and a separate sensor.

Systems and methods for non-contact arterial blood pressure waveform monitoring based on machine learning are provided. The method includes transmitting a millimeter wave signal waveform with a millimeter wave radar and receiving a reflected signal from the chest of a subject; extracting complex value millimeter wave IQ data from the received reflection signal; guiding the complex valued millimeter wave IQ data with a beamforming-based data enhancement module to form a target signal beam; and estimating an arterial blood pressure waveform from the target signal beam using a millimeter wave-arterial blood pressure waveform converter. During a training phase, the beamforming-based data enhancement module is configured to generate millimeter wave signal beam data from different angles for training the millimeter wave-arterial blood pressure waveform transducer; and a cross-modal knowledge migration module is utilized to generate a teacher model so as to jointly supervise training of the millimeter wave-arterial blood pressure waveform converter.

The invention provides a laser communication device for rapid link establishment and networking and a satellite internet constellation. The device utilizes the wavelength division multiplexing unit and the pre-aiming unit to realize beam combination of receiving and transmitting optical path signals so as to improve the coaxiality of receiving and transmitting branches; an optical fiber displacement device arranged on the transmitting-receiving lens is used for adjusting the relative position of the beam combining optical fiber and the focal point of the transmitting-receiving lens, and continuous beam changing of a transmitted light path signal within the divergence angle range of 55-1000 microrad is achieved; and a position sensing unit is matched to focus a receiving light path signal, so that a 0.2-1-degree receiving light path continuous field of view is realized. Through 10000 times of offset error estimation simulation, the coverage rate of an uncertain area to a target light spot reaches 99.32%, and about 1mrad beam change can be realized, so that minute-level capture efficiency is realized under the condition of the continuous field of view.

A laser ranging method and device using the autocorrelation characteristics of light intensity random noise, the method comprising: step S1, a wide spectrum light source emits laser light, which is divided into a first light beam and a second light beam by a ranging probe, and the first light beam is defined as a reference light beam; step S2, the second light beam is emitted to a target object to be measured, and a light beam reflected by the target object to be measured is obtained and defined as a signal light beam; step S3, the reference light beam and the signal light beam are coupled to form a coupled light beam; and step S4, the coupled light beam is processed to obtain absolute distance information of the target object to be measured to the light emitting end surface of the probe. The device obtains absolute distance information of the target object to be measured based on light source intensity noise. The present application has the advantages of high time resolution and high precision measurement.

The embodiment of the invention provides an optical modulator, a wavelength selection switch, a port-level optical switch, an optical cross connection and an optical communication system, and aims to reduce insertion loss in an optical switching process. In the optical modulator provided by the invention, an included angle is formed between a first surface of a first substrate and a second surface of a second substrate, and a liquid crystal layer is located between the first substrate and the second substrate, so that an included angle is formed between an incident light beam of a signal light beam irradiating the optical modulator and an emergent light beam emitted from the optical modulator; the first substrate is provided with a first electrode layer, the second substrate is provided with a second electrode layer, the refractive index of the liquid crystal layer is changed by adjusting the first electrode layer and the second electrode layer to generate electric fields with different intensities, the included angle between the incident light beam and the emergent light beam is further adjusted, and the signal light beam is emitted to a target output port; deflection of the signal light beams is achieved through the refraction principle, the insertion loss of the signal light beams in the optical modulator is reduced, and then the insertion loss in the optical switching process is reduced.

This invention provides a real-time ranging and positioning system and method based on an extended light source and a fast coincidence measurement algorithm. The real-time ranging system includes: an entangled light source, a first single-photon detector, a time-to-digital converter, a coincidence measurement module, a quantum transceiver module, and a corner mirror. The coincidence measurement module performs real-time coincidence measurement using a fast coincidence measurement algorithm based on the arrival time sequence of the signal beam and the arrival time sequence of the reference beam, obtaining the time difference corresponding to the peak position of the coincidence measurement curve. The distance between the target point and the real-time ranging system is then obtained based on this time difference. Furthermore, this invention splits the signal beam emitted by the light source into multiple signal sub-beams to form an extended light source, effectively reducing the cost of the measurement device while still satisfying quantum positioning measurement requirements.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a transmitting method, receiving method and a corresponding device for beam information. The method comprises receiving, from a base station, information related to signal beams related to a first mode of the base station; and performing an operation related to communication based on the information related to the signal beams related to the first mode of the base station.

A communication terminal may include interwoven high and low band phased array antennas that form signal beams in respective bands. The high band antenna may have center-grounded folded patch radiators. The low band antenna may have folded patch radiators that each surrounds a different respective center-grounded folded patch radiator of the high band antenna. The low and high band antennas may be mounted to ground traces on an antenna board. The antenna board may be mounted to a feeding board. Beamforming circuitry for the low and high band antennas may be disposed on the feeding board. The patch radiators of the low and high band antennas may be formed from free-standing folded sheet metal. The folded sheet metal may be mounted to the antenna board by conductive standoffs. The conductive standoffs may be used to feed the antenna radiators and / or to short the antenna radiators to the ground trace.

The application discloses a method and device of laser ranging technology based on cross-correlation principle, which are used for absolute distance measurement of a target object. The intensity information of a reference light beam and a signal light beam after photoelectric conversion is cross-correlated and demodulated to obtain the transmission time difference between the end surface of a ranging probe and the target surface and the reference light beam, and then the absolute distance is calculated. The application has the advantages of large range, high precision and high frequency response in absolute distance measurement.

The invention discloses a 3D waveguide type multi-core optical fiber link monitor which comprises an optical chip platform with n layers of stacked waveguide structures and a photoelectric detector, n is larger than or equal to 2, and the number n of waveguide layers of the optical chip platform is equal to the number of layers of connected multi-core optical fibers. The cross section distribution of waveguides in the optical chip platform and the cross section distribution of fiber cores of the multi-core optical fiber are the same and are in one-to-one correspondence; a waveguide channel corresponding to each fiber core of the multi-core optical fiber in the optical chip platform comprises an optical fiber signal coupling fan-out module, an optical signal beam splitting module, an optical signal monitoring module and a multi-core optical fiber signal coupling fan-in module which are connected in sequence; after an optical signal of a multi-core optical fiber transmitting end is coupled by the fan-out module, a small part of the signal is separated by the beam splitting module through a waveguide coupling effect and is used for monitoring, and most of the signal is transmitted back to a transmission link through the fan-in module; and the monitoring module realizes real-time detection through a photoelectric detector. According to the invention, no extra optical fiber fan-in / fan-out module is needed, the insertion loss is low, and the device is not sensitive to polarization.

A processor-implemented method for multimodal beam management, implemented by a network device, includes: receiving an input stream from one or more sensors by the network device; generating a digital twin modeling the environment of an area observed by the one or more sensors; the digital twin including one or more objects detected based on the input stream; and managing wireless communication signal beams, at least in part, based on the digital twin for communication with at least one user equipment (UE) in the area observed by the one or more sensors.

A focal plane array system includes a plurality of pixels configured to output a first signal light beam and to receive a second signal light beam reflected from a target object. Each of the plurality of pixels includes a transmitter, a receiver, and an interference light beam controller that includes a splitter disposed on an emission path of the first signal light beam to split a portion of the first signal light beam into an interference light beam, a receiving coupler disposed on a receiving path of the second signal light beam reflected from the target object, and a waveguide configured to transport the interference light beam split from the splitter to the receiving coupler. The receiving coupler is configured to transport the second signal light beam reflected from the target object to the receiver and to combine the interference light beam with the second signal light beam.

This invention relates to a center detection system and method for defocused lenses. The system comprises an optical system consisting of a light source module, a beam splitter, a lens holder, a first imaging module, and a second imaging module. The light source module, lens holder, beam splitter, and first imaging module are arranged sequentially along the direction of signal beam propagation, while the lens holder, beam splitter, and second imaging module are arranged sequentially along the direction of reflected beam propagation from the lens under test. Therefore, the light emitted by the light source module is transmitted through the lens under test and received by the first imaging module for Hartmann detection imaging of the lens. Simultaneously, the beam reflected by the lens under test is captured by the second imaging module and imaged to obtain a reflection information map. This system not only has the function of real-time identification of the optical center of the main lens and calculation of the lens refractive power parameters, but also imaging of the microstructure of the defocus area and markings printed on the lens surface, thereby realizing the function of identifying and marking the geometric center of the defocused lens microstructure.

The utility model relates to an integrated optical device based on surface natural reflection light splitting. The integrated optical device comprises a single-fiber collimator, a beam splitter prism, a double-fiber collimator, an outer glass sleeve and a crystal support. The beam splitter prism is of an integrated structure formed by gluing a first prism and a second prism, the first prism and the second prism are made of different materials, the beam splitter prism divides a signal light beam input by an incident optical fiber into monitoring light and signal light in proportion, and the two divided light beams are emitted from the output end face of the beam splitter prism; and the optical fibers are coupled into the double-optical-fiber collimator. According to the utility model, light splitting is carried out by adopting natural reflection of a bonding interface of two light-transmitting materials of different materials, and a light splitting film does not need to be plated on the interface, so that the manufacturing difficulty is reduced, the process is simplified, and the cost is reduced; and the refractive index tolerance of the light-transmitting material can be controlled at a quite stable level, so that accurate small-proportion light splitting is ensured.

A distance measurement method and system for LIDAR are provided, which includes: generating a frequency-swept light beam; splitting the frequency-swept light beam into a signal light beam and a local-oscillator light beam, where each of the signal light beam and the local-oscillator light beam includes first and second frequency-up phases, first and second frequency-down phases, slope of the first frequency-up phase is different from that of the second frequency-up phase, slope of the first frequency-down phase is different from that of the second frequency-down phase; emitting a signal light beam; receiving a reflected light beam; detecting beat frequencies of the frequency-up phases and the frequency-down phases between the local-oscillator light beam and the reflected light beam; and using two of beat frequencies of the frequency-up phases and frequency-down phases to measure the speed of the target object and / or the distance between the target object and the LIDAR.

Embodiments are directed to the association of concurrent tracks using graph crossings. Signal beams may be employed to scan paths across an object such that sensors separately detect signals from the signal beams reflected by the object. Crossing points may be determined based on a plurality of trajectories that intersect each other during the scan of the object. Graphs may be generated based on the portion of trajectories and the crossing points such that each edge in the graphs corresponds to a crossing point and such that each node in the one or more graphs corresponds to a trajectory. The graphs may be compared to determine one or more matched graphs that may share a common topology. Common trajectories may be determined based on the matched graphs such that each common trajectory may be associated with a same path across the object and a separate sensor.

The application provides a self-adaptive signal beam forming method, device, equipment and storage medium. The method is based on a 2N+1 element uniform linear array receiving signal. The method comprises the following steps: a multiple Toeplitz matrix is constructed, and a covariance matrix is obtained by merging; a signal direction vector is calculated according to an eigenvalue and an eigenvector, and an expected signal direction vector is obtained by optimization; a noise power is estimated by using a minimum eigenvalue, a corresponding relationship between a signal power and the eigenvector is established, and an expected signal power is determined; a covariance matrix of mutually independent noise is reconstructed according to the noise power, the corresponding relationship and the expected signal power; and the expected signal direction vector and the reconstructed covariance matrix are brought into a Cap on beam former, and an optimal weight vector is calculated to control beam forming. The method improves the performance and reliability of the beam forming system in a complex signal environment by constructing a multiple Toeplitz matrix and using the characteristics of the multiple Toeplitz matrix for signal decorrelation and covariance matrix reconstruction.

An optical fiber measurement system includes an optical time-domain reflectometer, a wavelength division multiplexer, and a signal generator. The signal generator sends a signal light ray to the wavelength division multiplexer. The optical time-domain reflectometer sends two measurement light rays whose wavelengths are respectively longer than and shorter than a wavelength of the signal light ray to the wavelength division multiplexer. The wavelength division multiplexer combines the two measurement light rays and the signal light ray, sends a combined light ray to an optical fiber, and sends a light ray returned by the optical fiber to the optical time-domain reflectometer, so that the optical time-domain reflectometer determines performance of the optical fiber based on the returned light ray.

The application discloses an airborne phased array antenna blocking area judgment method and device and a medium, relates to the technical field of communication, and receives the azimuth and the elevation angle of a current airborne satellite communication equipment transmitting signal; acquires the region data of a pre-constructed blocking area; judges whether the airborne satellite communication equipment transmitting signal beam pointing is located in the blocking area according to the azimuth, the elevation angle and the region data; if yes, the airborne satellite communication equipment is prohibited from transmitting signals. By pre-constructing the blocking area, judging whether the airborne satellite communication equipment transmitting signal beam pointing is located in the blocking area according to the current azimuth and elevation angle of the beam, and determining whether the signal needs to be prohibited from being transmitted, if the beam pointing is located in the blocking area, the airborne satellite communication equipment is prohibited from transmitting signals, only the region data of the blocking area is involved, and the data amount is large when the two-dimensional array is traversed according to the blocking data table file to judge whether the antenna beam pointing is located in the blocking area, and non-blocking area data is also involved.

The changes depend on the frequency in the beamform of the received RF signal. This transmission can be provided with an information receiving device; this signal beam shape can include... For example, the signal amplification rate and direction, achievable and elevation angles, line of sight and... The width of the main (and optional side loads) of the signal / information. Consider the diagram of the antenna components of an antenna panel that is used to transmit a signal. And / or similar information; the type of information provided can control its quantity. The costs involved and therefore vary depending on the way the information is transported. Further details will be provided in the format described herein;

The invention belongs to the technical field of optical processing, and relates to a holographic optical element preparation method and system and a double-view-angle head-up display system, and the method comprises the steps: determining a first direction vector in a three-dimensional space according to the design parameters of a reference light beam and a signal light beam relative to a holographic optical element; adjusting the angle of the holographic optical element to enable the holographic optical element to be in a vertical position in the three-dimensional coordinate system; calculating a second direction vector according to the first direction vector and the adjustment angle of the vertical position; adjusting the angle of the holographic optical element again according to the second direction vector to enable the reference light beam and the signal light beam to be in the same plane; and performing exposure interference on the holographic optical element by using the holographic optical element preparation system so as to enable the photosensitive material in the holographic optical element to form a standing wave pattern. The three-dimensional light path structure in the optical element preparation process is converted into the two-dimensional exposure interference through the light beam position conversion method, the preparation complexity is reduced, and the head-up display accuracy is guaranteed.

The present invention relates mainly to a lighting and signalling device including at least one luminous module capable of generating a lighting beam along a longitudinal optical axis and an optical element through which the lighting beam is projected. The lighting and signalling device includes a controllable liquid-crystal screen pressed against the optical element, the controllable liquid-crystal screen being capable of adopting different diffusion states, including at least one state of projection of the lighting beam in which the controllable liquid-crystal screen is transparent and a state of emission of a signalling beam in which the controllable liquid-crystal screen is at least partially diffusing.

This invention discloses a space non-cooperative target anti-disturbance positioning method and device, belonging to the field of space target optical positioning technology. The method includes generating multiple positioning sub-beams and a reference beam; applying different modulation parameters to the positioning sub-beams and the reference beam to obtain multiple sets of signal beams; converging the multiple sets of signal beams on the plane where the space target is located to form a probe light field; acquiring the echo signals generated by the space target through diffuse reflection of the multiple sets of signal beams, and demodulating them according to the modulation parameters to obtain the light intensity values ​​of each positioning sub-beam and each reference beam; normalizing the light intensity values ​​of each positioning sub-beam and the reference beam to obtain a normalized light intensity vector; and establishing a geometric mapping relationship between the normalized light intensity vector and the target position based on the normalized light intensity vector and the beam energy distribution model, and calculating the relative position of the space target in a two-dimensional coordinate system.

The application discloses a high-brightness kilowatt 980nm waveband optical fiber laser, and aims at solving the contradiction between power and beam quality improvement of the prior art.The application is composed of U optical fiber laser unit modules, an optical fiber signal beam combiner, an output cladding light filter and an output coupling end.The optical fiber laser unit modules, the optical fiber signal beam combiner, the output cladding light filter and the output coupling end are connected in series.The optical fiber laser unit module is composed of a single-mode seed source and a K-stage optical fiber amplifier, and the single-mode seed source adopts a fiber oscillator.The K-stage optical fiber amplifier is composed of K single-stage optical fiber amplifiers.The optical fiber signal beam combiner performs power beam combination on the laser output by the optical fiber laser unit module, the output cladding light filter filters cladding light, and the output coupling end couples the laser.The application can make the laser have kilowatt power output, and realize beam quality optimization and brightness improvement.