292 results about "Wide beam" patented technology

The invention relates to the technical field of communication, in particular to an airborne Tiantong phased-array antenna and an application method thereof. According to the method, phased-array antenna beams are driven to perform electronic scanning according to a geometric azimuth angle, beacon signal blind acquisition is performed in a preset airspace in a wide beam mode, and when an initial signal is detected, the mode is immediately switched to a narrow beam scanning mode; dynamically adjusting a phase weighting coefficient to realize pointing adjustment, so that a signal quality parameter is continuously converged in an optimal threshold interval; carrying aircraft maneuvering acceleration feedback is introduced, beam pointing offset is dynamically compensated based on a pre-constructed interference feature library, and signal fluctuation caused by a multipath effect is suppressed; and continuously checking a data validity flag bit of the main inertial navigation system, seamlessly switching to an antenna built-in inertial navigation data stream when a failure threshold is triggered, and activating a rapid recapture program to maintain zero interruption of a communication link. Through dual-source inertial navigation data fusion and intelligent beam control, rapid and accurate tracking of Tiantong satellites in an airborne environment is realized.

A transmission tower deformation monitoring device based on a phased array radar technology relates to the field of irregular contour metering, and comprises a map construction module used for constructing a regional digital map; the boundary determination module is used for near-field region boundaries; the signal acquisition module is used for acquiring a near-field echo signal of a near-field region through a narrow beam and acquiring a far-field echo signal of a far-field region through a wide beam; the calibration table construction module is used for constructing a signal intensity comparison table; the data processing module is used for determining effective monitoring data; the error calculation module is used for performing error calculation on the effective monitoring data to obtain a phase error and an amplitude error; and the parameter determination module is used for determining iron tower deformation parameters. According to the invention, the accuracy of transmission tower deformation monitoring can be improved.

The invention discloses a low-orbit satellite beam resource allocation method based on deep reinforcement learning, and the method comprises the steps: firstly building a satellite system model according to a low-orbit satellite system hopping beam scene, obtaining the communication traffic demand and geographic position of a ground user through a satellite traffic monitoring facility, and carrying out the preprocessing; secondly, carrying out user clustering on information of communication traffic demands of ground users, and dividing a ground cell into a hot spot area and a non-hot spot area; and then based on a satellite system model, establishing an optimization problem of multi-beam resource allocation and control, adopting a deep reinforcement learning method, dynamically adjusting a beam resource allocation strategy, allocating narrow beam resources to a hot spot area, and allocating wide beam resources to a non-hot spot area to realize system throughput maximization and user fairness. According to the method, the resource allocation problem in the low-orbit satellite hopping beam scene is effectively solved, and the throughput of a satellite system is improved while the user fairness is ensured.

The invention discloses a multi-beam cooperative scheduling method and a multi-beam cooperative scheduling system for low-orbit satellite communication, which mainly solve the problems of poor beam scheduling flexibility and difficulty in adapting to time-varying requirements in a high-dynamic environment in the prior art, and the implementation scheme of the multi-beam cooperative scheduling method comprises the following steps of: collecting online user information by a low-orbit satellite through a wide beam; a hopping beam position is generated by using adaptive clustering under the constraint of channel resources; a hopping beam scheduling algorithm based on deep reinforcement learning outputs an optimal scheduling strategy according to the real-time environment variable; and optimizing a beam hopping time frame structure in each scheduling period, covering accessed users in a beam position through spot beams, and sending service data and control information to complete efficient service transmission. The method can adapt to changes of user distribution and service requirements in low-orbit satellite communication, the utilization rate of spectrum resources is improved, communication delay is reduced, the overall performance and service quality of the system in a high-dynamic environment can be enhanced, and the method can be used for dynamic beam position division, hopping beam scheduling and hopping beam resource allocation in a multi-beam low-orbit satellite communication scene.

The invention belongs to the technical field of low-orbit satellite communication, and discloses a satellite system for jointly improving measurement and control data transmission and communication application efficiency. A control unit is responsible for completing satellite calendar attitude calculation of satellite broadcast, analyzing a satellite working mode switching instruction according to ground station information stored by a storage unit, and then sending the instruction to each module unit; the two baseband processing units both support on-orbit reconstruction and loading, wherein the baseband processing unit A is used for completing measurement and control signal processing or user wide beam access signal processing; the baseband processing unit B is used for completing communication service signal processing or data transmission signal processing; the two up-conversion units respectively carry out up-conversion processing on a service link signal and a measurement and control link signal in the signal processing module, and the two down-conversion units respectively receive signals of the phased array transceiver antenna and the wide beam transceiver antenna and complete down-conversion processing. The measurement and control link can support a satellite measurement and control function and a communication wide beam access function in a time-sharing manner.

The invention belongs to the technical field of underwater target radiation noise measurement, and particularly relates to a sparse combination array measurement system and method for underwater target radiation noise measurement, a program and a storage medium. A sparse combined array formed by a sound pressure spiral double-cone volume array with a sparse structure and a sound pressure vector nested vertical linear array is designed, a combined array frequency-division testing scheme of a high-frequency volume array and a low-frequency vertical linear array is adopted, a combined measurement method of a sound pressure hydrophone and a vector hydrophone is utilized, a measurement frequency band is extended, and the measurement precision is improved. And effective measurement of the full-band radiation noise of the underwater target is realized. Through a sparse array arrangement structure and an improved constant-beam-width beam forming method, a two-dimensional steady constant-beam-width beam is obtained while the number of array elements is reduced and the array complexity is reduced, and an appropriate main lobe width and a lower side lobe level can be adjusted according to a measured target and a measurement distance. According to the method, the array element redundancy of the measurement array is reduced, and the method can be flexibly applied to various application scenes of underwater radiation noise measurement.

The invention provides a wide and narrow wave beam adjustable array antenna, which comprises at least two groups of sub-arrays, each group of sub-arrays comprises at least one high-frequency dual-channel antenna, the side edge of each high-frequency dual-channel antenna is provided with a reflection boundary, and the reflection boundary is driven by a lifting device to ascend and descend. The high-frequency dual-channel antenna works in a corresponding wave beam working mode under the condition that the reflection boundary is at a plurality of different heights; wherein the beam working mode comprises a wide beam mode, a first conventional antenna mode and a second conventional antenna mode, and the beam width of the first conventional antenna mode is different from that of the second conventional antenna mode. According to the invention, the beam width can be adjusted by adjusting the height of the reflection boundary, so that the requirements in different scenes are met.

The invention discloses a PT symmetrical hot-pressing resistance MEMS wind speed and wind direction sensor. The sensor comprises four groups of PT symmetrical MEMS resonators which are orthogonally distributed and have hot-pressing resistance feedback; the PT symmetrical MEMS resonator comprises two cantilever beam resonators with completely same structures, a coupling spring beam connected with the two resonators, and a constant current source connected with one resonator, each cantilever resonator comprises two anchor areas, a wide beam connected with the anchor areas, a narrow beam with a piezoresistive effect, a warped thin plate structure and external electrodes located on the two sides of the thin plate structure. Wind speed and wind direction signals are converted into rigidity change of the resonator array through mechanical action by means of a warped thin plate structure, and the rigidity change enables the PT symmetrical MEMS system to deviate from an EP point, so that system frequency splitting is caused. As the frequency splitting quantity of the PT symmetric system is in direct proportion to the square root of the disturbance quantity, the wind speed and direction sensor can detect tiny wind speed signals, and has the advantages of very high sensitivity, simple process, high integration level and the like.

The invention relates to the technical field of antennas, in particular to a high-isolation double-frequency common-caliber miniaturized phased-array antenna which comprises a high-frequency-band linear polarization end-fire metal patch array structure, a low-frequency-band linear polarization end-fire metal patch array structure, a public metal reflection floor and a single-layer dielectric substrate. Radiation structures of the high-frequency-band linear polarization end-fire metal patch array structure and the low-frequency-band linear polarization end-fire metal patch array structure are formed by improved dipoles of microstrip balun feed with out-of-band rejection, so that linear polarization is achieved, and then the dipoles are fed through the improved microstrip balun with out-of-band radiation rejection. The suppression on high frequency is further deepened and the decoupling bandwidth is expanded; in addition, a decoupling structure is added between the adjacent common-frequency antennas to improve the isolation and radiation capability between the adjacent common-frequency antenna units, high isolation and wide beam coverage of the dual-frequency common-aperture phased-array antenna can be realized, the performance of the antenna is improved, and the dual-frequency common-aperture phased-array antenna is simple in process and low in cost.

The invention belongs to the technical field of communication antennas, and provides a wide-beam patch antenna which comprises a radiation patch, a grounding plate, a feed structure, a dielectric substrate and at least one group of grounding metal coupling columns. The grounding metal coupling column is located in a current belly area of a main current mode of the radiation patch, forms strong coupling with a main mode current, excites and establishes a secondary current path perpendicular to a horizontal plane direction, and enhances a low elevation angle component of antenna radiation and a beam width in a polarization direction; by establishing a four-coupling-column structure of an orthogonal mode cooperative enhancement mechanism, the half-power beam width in two orthogonal polarization directions can be effectively expanded, and wide-beam circular polarization radiation of the antenna is further realized; in addition, a single-layer dielectric substrate structure is adopted, the antenna is light and low in cost, wide beam performance is guaranteed, meanwhile, cost control and manufacturing reliability are considered, and the antenna has good feasibility.

Aspects of the disclosure relate to user equipment (UE)-assisted beam broadening in a wireless communication system configured to employ beamforming. A UE may determine downlink channel characteristics by monitoring for, receiving, and measuring a suitable downlink reference signal. Based on the channel characteristics the UE may select a wide beam corresponding to a set of narrow beams. The UE may then transmit a report identifying the selected wide beam by indicating a direction of the selected wide beam and an angular width of the selected wide beam. Other aspects, embodiments, and features are also claimed and described.

The invention provides a foldable electronic device. The foldable electronic device comprises an antenna. The working frequency band of the antenna comprises a satellite communication frequency band. The antenna comprises a radiator and a parasitic branch. A part of the conductive frame of the housing is used as a radiator and a parasitic branch. When the foldable electronic device is in an unfolded state, the radiator and the parasitic branch can generate radiation beams facing the two sides of the top of the foldable electronic device, so that the antenna has a wide beam characteristic. When the foldable electronic device is in the unfolded state, a user does not need to change the posture of holding the foldable electronic device during satellite communication, and the experience of the user during satellite communication can be improved.

This disclosure describes procedures for UE and network on initial access, to ensure the normal operation of system and to obtain high energy efficiency and obtain high access reliability. Consider power efficiency, wide and narrow beams are considered in NTN systems to achieve more efficient DL / UL transmission scheduling. However, there may be EIRP split issue for beam differentiation. For example, 50%EIRP are allocated for wide beam and 50%EIPR are allocated for narrow beam, then there may be -3db loss compared with no EIRP split. In view of mentioned issue, novel schemes for Synchronization signal and PBCH design in NTN are mentioned in this patent.

Methods, systems, and devices for wireless communication are described. For instance, a network entity may receive control information indicating a set of candidate geolocations within a target coverage area for the network entity. The network entity may transmit a signal that is beamformed via a set of antenna elements of an antenna array of the network entity in accordance with a set of antenna beamforming weights. The set of antenna beamforming weights may be identified based on a beam pattern performance criterion applied to a set of candidate radiation patterns of a spatial envelope model. The spatial envelope model may be based on a set of directions between the antenna array of the network entity and the set of candidate geolocations as well as a set of pathloss values associated with the set of candidate geolocations.

The invention relates to the field of millimeter wave radars, and discloses a 45-degree polarized array waveguide antenna for a millimeter wave radar, which comprises a metal groove layer; a slot array element layer; the slot array element layer and the metal slot layer are connected in a vertical lamination mode; the metal groove layer is provided with a plurality of radiation grooves; radiation grooves with the same number are formed in the metal groove layer at the corresponding positions of the slot array elements; the radiation slot indirectly increases the effective radiation aperture area of the antenna. The invention provides a method for solving the problems of low array pattern sidelobe, low gain and wide beam width of the N-element waveguide array antenna in a miniaturized application scene.

Provided are a communication method and a communication device, the method comprising: receiving a first synchronization signal, receiving a second synchronization signal, the width of a sending beam of the first synchronization signal being greater than the width of a sending beam of the second synchronization signal, the coverage range of the sending beam of the first synchronization signal comprises the coverage range of the sending beam of the plurality of second synchronization signals, the method sends the first synchronization signal by using a wider beam, so that the number of the first synchronization signals covering the terminal equipment is greater than the number of the second synchronization signals covering the terminal equipment within a period of time; and the time required by the terminal equipment in the initial access process is reduced.

The present disclosure relates to the field of communications, and provides a communication sensing method and system and a related device. The method comprises: using a plurality of downlink communication symbols in a specific time slot of a communication signal to roughly measure a target wide beam where a target object is located; if the target wide beam exists, multiplexing sensing transmission symbols on the downlink communication symbols in front of a guard interval symbol in the specific time slot, to send a mixed data stream of a data stream of the communication signal and a data stream of a sensing signal obtained on the basis of mixed precoding and mixed beam forming; and during the guard interval symbol in the specific time slot, using sensing reception symbols for sensing reception, to sense a target narrow beam where the target object is located. The method provided by the present disclosure can improve the wireless resource utilization, and provide sensing capabilities under full-area coverage with minimal impact on communication network performance, providing additional sensing services at a relatively low cost.

The invention discloses an ultra-wide beam broadband four-arm helical antenna based on parasitic loading. The ultra-wide beam broadband four-arm helical antenna comprises a circular dielectric substrate, an arc parasitic radiation arm, a cylindrical support, a flexible dielectric substrate, a stepped impedance winding helical arm, a floor and a coaxial feed. The antenna can realize wide axial ratio beam width and wide half-power beam width in a working frequency band range of 2-2.5 GHz, meanwhile, the antenna has a relatively small size, the stability, the anti-interference capability and the coverage range of a wireless communication system are improved, and the antenna can flexibly cope with various complex scenes. In addition, the antenna works in a wide frequency band and has a wide 3-dB axial ratio beam width in the wide frequency band, for example, the 3-dB axial ratio beam width at a 2.2 GHz frequency point reaches 235 degrees; the 3-dB axial ratio beam width at the 2.3 GHz frequency point reaches 252 degrees; and the 3-dB axial ratio beam width at a 2.4 GHz frequency point reaches 236 degrees.

Lighting system having visible-light source including semiconductor light-emitting devices arranged for generating plurality of visible-light emissions having range of color points including cool to very cool white color point for daytime and warm to very warm white color point for nighttime. Optical system arranged for causing some visible-light emissions to have range of beam widths including relatively wide and narrow beam widths. Mounting system causing range of beam directions. Control system causing visible-light emissions to include daytime configuration having cool to very cool white color point and relatively wide beam width, and nighttime configuration having warm to very warm white color point and relatively narrow beam width. Daytime configuration includes control system for causing visible-light emissions to include lateral- or up-light emissions, promoting relatively high equivalent melanopic lux. Nighttime configuration includes control system for causing visible-light emissions to include down-light emissions promoting relatively low equivalent melanopic lux.

A device includes first, second and third elements fabricated on a common substrate. The first element includes an optical source, the second element includes at least one optical facet coupled to free space, and the third element includes a waveguide that optically couples the first element to the second element. The optical facet, having a compound III-V semiconductor material as a core and a dielectric material as a cladding, is characterized by a refractive index contrast between the core and the cladding that is greater or equal to 1. An optical beam exiting the facet is characterized by a central beam propagation axis and a FWHM beam divergence greater than 40 degrees referred to at least one axis perpendicular to the central beam propagation axis.

A sidelink transmission beam scan may be performed; performing sidelink by transmitting a first portion of a symbol at a first transmission power using a wide beam at the start of the slot during a sidelink transmission slot comprising a plurality of symbols and transmitting two or more second portions of the symbol at a second transmission power using two or more narrow beams after the first portion The transmission beam is scanned, one second portion per narrow beam, and a second transmission power is determined based on a gain difference between the wide beam and the narrow beam. The first portion includes at least one or more symbols for automatic gain control in one or more receiving devices, and the second portions include at least reference signals, one reference signal per second portion.

A relay node may receive a pattern index indicating a beam pattern. Further, the relay node may receive resource information indicating a beam type. Also, the relay node may receive one or more first beam indexes associated with the indicated beam pattern. On a condition that the indicated beam type is narrow and a beam index of the one or more first beam indexes corresponds to a wide beam type, the relay node may determine second beam indexes for a set of narrow beams associated with the beam index of the one or more first beam indexes corresponding to the wide beam type. Moreover, the relay node may determine a beam and time-domain resources for each of the determined second beam indexes based on the pattern index and resource information. Accordingly, the relay node may transmit data using the determined beam and at least one of the determined time-domain resources.

The invention relates to the technical field of sensor sensing, and discloses a microspur sensing method and system for an MEMS ultrasonic sensor array, and the method comprises the steps: carrying out the phase calibration of the MEMS ultrasonic sensor array, and obtaining a phase calibration parameter; performing near-field spherical wave phase compensation on the phase calibration parameter based on the macro target distance and the incident angle to obtain a near-field compensation parameter; controlling the MEMS ultrasonic sensor array to execute beam forming of wide beam scanning and narrow beam focusing according to the near-field compensation parameter to obtain a macro focusing sound field; transmitting ultrasonic waves to a rear vehicle target through the micro-distance focusing sound field and receiving a reflection signal, and performing vehicle feature recognition on the reflection signal to obtain a vehicle recognition result; and positioning calculation of the target angle and distance is carried out based on the vehicle identification result to obtain rear vehicle positioning data, and the angle resolution and the distance measurement precision in a microspur range are improved.

The invention relates to the technical field of antennas, and provides an antenna, a communication method and terminal equipment, and the method comprises the steps: attaching a metal floor to a first surface of a dielectric substrate; the first excitation element and the second excitation element are respectively arranged on the first side and the second side of the metal floor, and the sizes of the two elements are related to a target frequency band; an inner conductor and an outer conductor of the first feed assembly are correspondingly connected with a first feed point of the first excitation element and the metal floor respectively; an inner conductor and an outer conductor of the second feed assembly are correspondingly connected with a second feed point of the second excitation element and the metal floor respectively; the first feed assembly is used for providing first excitation current for the first excitation element; the second feed assembly is used for providing a second excitation current for the second excitation element; the first excitation current and the second excitation current with different phase differences can present different current distributions on the metal floor, so that the purpose of antenna radiation beam steering is achieved, the technical effect of wide beams is achieved, and thus space direction coverage on a target frequency band is achieved.

Provided in the present application are a foldable electronic device, the foldable electronic device comprising an antenna. The operating frequency band of the antenna comprises a satellite communication frequency band. The antenna comprises a radiator and a parasitic stub. Part of a conductive frame of a shell serves as the radiator and the parasitic stub. When the foldable electronic device is in an unfolded state, the radiator and the parasitic stub can generate radiation beams towards two sides of the top of the foldable electronic device, so that the antenna has the characteristics of a wide beam. When the foldable electronic device is in the unfolded state, a user does not need to change the posture of holding the foldable electronic device when performing satellite communication, so that the experience of the user during performing satellite communication can be improved.

Methods, systems, and devices for wireless communications are described for beam measurement and selection using separate synchronization signal block (SSB) bursts for wide beams and narrow beams, where a periodicity of SSB bursts of narrow beams may be longer than a periodicity of SSB bursts with wide beams. A user equipment (UE) may predict narrow beam measurements (such as using an artificial intelligence or machine learning (AI / ML) model) at occasions of the wide beam SSBs that do not include the narrow beam SSBs. The UE may identify control resource set or remaining minimum system information resources, or random access channel resources for a random access transmission, based on the measured and predicted measurements.

Various solutions for initial access with enhanced beam configuration in wireless communications are described. A network node may configure a cell with at least one wide beam and one or more narrow beams. The wide beam is associated with a cell-defining synchronization signal block (CD-SSB) and each of the narrow beams is associated with a non-cell-defining synchronization signal block (NCD-SSB) or a channel state information-reference signal (CSI-RS). The network node may transmit the CD-SSB on the wide beam. Then, the network node may receive a random access request from an apparatus for initial access to the cell.

The invention provides an anti-interception communication access method, system and device, a storage medium and a program product, and relates to the technical field of wireless communication networks, and the method comprises the steps: generating a radio frequency signal through an intelligent array antenna based on a time slot index and a beam power index, and transmitting the radio frequency signal to a satellite, so as to obtain the service data of a service copy packet; the radio frequency signal comprises a sending signal corresponding to each time slot, and each sending signal carries a service copy packet; and in any two adjacent time slots, the intelligent array antenna sends corresponding sending signals in one time slot by adopting a wide beam mode and a high power mode, and the intelligent array antenna sends corresponding sending signals in the other time slot by adopting a narrow beam mode and a low power mode. Through the above mode, the orthogonality of the wave beam and the power can be fully utilized to avoid the situation that the signal is intercepted by an electronic reconnaissance satellite, the anti-interception performance of the aircraft is improved, and the risk that the aircraft is exposed is reduced.

The invention discloses a wide-beam omnidirectional circularly polarized antenna and a radio communication system comprising the same, and belongs to the technical field of linear communication antennae, the wide-beam omnidirectional circularly polarized antenna comprises a feed connector, a printed board feed balun, a conical hollow substrate, a feed printed board and a radiation printed patch; by adopting the split type conical substrate which is composed of the feed printed board at the top and the conical hollow substrate, connection and conduction of the feed printed board and other structures are facilitated, and the process cost is reduced while the process credibility is enhanced; the feed form of the antenna is set to be printed board balun feed, the microstrip line extending according to a certain curvilinear equation is arranged on the copper layer of the printed board balun, and the printed board feed balun is connected and conducted with the spiral radiation printed patch through the feed printed board, so that the performance requirements of low axial ratio and high gain of the antenna can be ensured, and the antenna can be widely applied to the field of antenna devices. And the technical requirements of wide wave beams can be met.

The invention discloses a broadband wide-beam millimeter wave magnetoelectric dipole antenna, and belongs to the technical field of radio frequency front-end devices. The antenna mainly structurally comprises an upper-layer dielectric plate, a middle-layer dielectric plate, a lower-layer dielectric plate, a metal radiation through hole, a metal radiation patch, a parasitic unit through hole, a parasitic unit patch, a left feed through hole, a right feed through hole, a metal feed patch, a coaxial line and a metal ground. Wide impedance bandwidth in the range of 18.2-40.3 GHz is realized when the antenna works in a millimeter wave frequency band, the relative bandwidth exceeds 75%, and the antenna has wide beam width performance; the structure is simple and manufacturing is convenient.