853 results about "Beam control" 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.

The invention relates to the field of medical equipment, and provides a compact multi-chamber proton treatment system based on a shared beam line, and the system comprises a fixed beam transmission line which is used for guiding the movement direction of a proton beam into a vertical direction; the rotating beam transmission line is used for guiding the movement direction of the proton beam into the horizontal direction; one end of the fixed beam transmission line is connected with the proton cyclotron, the other end of the fixed beam transmission line is connected with one end of the rotary beam transmission line, and the other end of the rotary beam transmission line is in butt joint with a plurality of treatment rooms; the rotating beam transmission line rotates around a central axis extending in the vertical direction. According to the invention, the proton beam can be safely, efficiently and accurately transmitted to each treatment room, and a fixed beam transmission system and a rotating rack do not need to be independently arranged for each treatment room, so that the beam control assembly and the system occupied area of the multi-room particle treatment device are minimized, and the number of treated patients can be remarkably increased.

The invention relates to the technical field of electromagnetics, in particular to an ultra-wideband full-polarization large-angle beam scanning theory based on an electromagnetic metasurface, which comprises the following steps of: S1, regulating and controlling a beam far-field phase based on an array global reference phase; s2, adjusting and controlling far-field orthogonal polarization vector field superposition based on array factors to realize full-polarization beam control; and S3, theoretical calculation verification of full-polarization beam regulation and full-wave simulation verification of the full-polarization beam. According to the invention, a novel full-polarization wave beam regulation and control theory based on array factor regulation and control orthogonal polarization vector field superposition is provided, and theoretical calculation and full-wave simulation are carried out on the provided full-polarization wave beam regulation and control theory; according to the theory, the effectiveness and universality of realizing ultra-wideband and large-angle full-polarization beam regulation and control by only using one-bit phase resolution are verified.

The invention relates to the technical field of wireless communication, in particular to an intelligent beam forming system and method for millimeter wave communication, and the system comprises a sensing module which is used for collecting multi-direction signal data in a millimeter wave communication environment and extracting environment feature information, and an intelligent decision module which generates a beam direction control strategy based on a deep reinforcement learning algorithm, the sub-region management module divides a communication region into a plurality of sub-regions according to a beam direction control strategy and allocates communication resources to each sub-region, and the beam control module adjusts the beam direction and power allocation of the antenna array according to the beam direction control strategy and the communication resource allocation result of the sub-regions. The feedback evaluation module obtains communication quality data after beam adjustment and generates a performance evaluation result, and the learning optimization module updates network parameters of a deep reinforcement learning algorithm according to the performance evaluation result and improves the environment adaptive capability.

The invention relates to the technical field of phased-array antennas, in particular to a common-caliber simultaneous multifunctional phased-array antenna wave control system, which uses a common-caliber antenna array, comprises N phased-array antennas and N TR components, and realizes caliber sharing through staggered layout. And a wave control system is used for calculating a wave beam control command by utilizing embedded software, controlling phase shift and attenuation of the TR component and processing internal and external interface communication. The feed network is used for signal distribution, and uniform distribution and transmission efficiency are ensured. A Beidou system is used for providing time synchronization and positioning information, and accurate beam control of the beam control system in a complex electromagnetic environment is guaranteed. A channel is used for receiving antenna array signals, control signals are sent to the TR assembly, and accurate transmission of the signals is ensured. According to the invention, the problem that the existing wave control system cannot perform multi-beam control on the common-caliber multifunctional phased-array antenna at the same time is solved, and the target of multi-beam control in the single shared antenna caliber is realized.

The invention discloses a large-scale phased array multi-channel partition beam control method and device based on an FPGA and a storage medium. The method comprises the steps that a control instruction of an antenna control unit is acquired; analyzing the control instruction which is verified to be correct, judging an instruction type according to an analysis result, when the instruction type is a beam switching instruction, determining a beam control parameter in the instruction, and calculating a base code of the phased-array antenna according to the beam control parameter; the array elements of the phased-array antenna are divided into a plurality of areas, according to the base codes and the position coordinates of the array elements, the wave control codes of the array elements are calculated in parallel by adopting a multi-channel partitioning method, and the wave control codes are normalized and then written into a beam forming chip in parallel; and after the operation is completed, a corresponding response instruction is sent to the antenna control unit. The method has the advantages of being high in beam switching speed, small in resource consumption and good in universality, an array can form a sparse array in the mode of sending a control instruction, and therefore side lobes are restrained, and power consumption is reduced.

The invention discloses a beam control optimization method and system for a millimeter wave network, and relates to the technical field of beam control optimization, and the method comprises the following steps: employing a DTW algorithm dynamic time warping algorithm to match multi-hop path time delay characteristics between a base station and user equipment, and screening an optimal reflection path sequence; obtaining path topology, constructing a secondary unconstrained binary optimization model, and obtaining discrete phase distribution through quantum annealing solution; calculating a quantization error of the discrete phase and performing frequency domain compensation by adopting an interpolation algorithm to obtain a phase compensation vector; loading the compensation vector to programmable metasurface hardware to form a reflection link, and constructing a phase error covariance matrix; correcting the weight parameter increment of the optimization model based on the matrix; and finally, a target function is constructed in combination with the correction weight and the compensation vector, channel capacity optimization is realized, the problems of difficult multi-hop path selection, insufficient phase error compensation and high beam optimization complexity in millimeter wave communication are solved, and the channel capacity and the communication quality are improved.

The invention belongs to the technical field of vacuum coating, and particularly relates to a vacuum coating machine electron gun control method and system.The control method comprises the steps that in the coating process, key real-time parameters reflecting the working state of an electron gun and the evaporation process are continuously collected and fused, and the current coating state is evaluated in real time based on the key real-time parameters; and in combination with preset coating process requirements, an electron beam control target instruction set of a next control period is dynamically generated through a built-in decision mechanism and is sent to a power controller, a focusing coil controller and a scanning coil controller of the electron gun, and the electron gun is driven to adjust the power output, the focusing state and the scanning motion of the electron gun in real time. Through accurate and stable control of the evaporation rate, material characteristic changes are effectively coped with through a strong closed loop of power and the evaporation rate; the dynamically planned scanning path can actively compensate the non-uniformity of the thermal field of the crucible, and beam spot energy distribution is optimized in combination with focusing adjustment, so that the uniformity of the thermal field is remarkably improved.

The invention discloses a phased array receiving beam resource allocation method for satellite communication, which relates to the technical field of satellite communication, and comprises the following steps: acquiring satellite position, user position and satellite attitude data, calculating an azimuth angle and a pitch angle of a propagation path, querying a pre-stored dark matter density distribution database of a satellite-borne memory, and calculating a pre-stored dark matter density distribution database of the satellite-borne memory; extracting a dark substance density value; according to the user service priority and the real-time channel quality, a beam resource proportion is adjusted in a resource allocation table, and a beam scheduling instruction is generated; and executing the beam scheduling instruction, driving the state switching of the millimeter wave phased array phase shifter, monitoring the change rate of the signal-to-noise ratio of the user terminal, and re-calculating the azimuth angle and the pitch angle of the propagation path when the continuous change rate of the signal-to-noise ratio exceeds a preset change rate threshold. According to the method, a space-borne pre-stored dark matter density database is inquired, a phase disturbance value is calculated, and the cosmic scale dark matter physical field effect is brought into a beam control closed loop.

This disclosure relates generally to a composite reconfigurable intelligent surface system for real time beam steering and method thereof. Conventional method for real time beam steering includes bulky systems with several antenna elements and amplifiers to shape and control the beam. The present disclosure provides a composite reconfigurable intelligent surface (CRIS) for real time beam steering. The CRIS is formed from a set of constituent reflecting surfaces which in turn are generated from unit cells. These unit cells are responsible for providing individual phase reflection performance utilizing the installed varactor diode in each unit cell. The CRIS can provide a) multi-beam reflection performance, b) polarization sensitive operation, c) 2D beam steering abilities, d) real-time beam control, e) null point reduction for beam shaping requirements and f) dependable pattern stability over a suitable range of frequencies.

The invention relates to the technical field of sound beam control, and provides a sound beam forming pointing control method based on crowd recognition and related equipment thereof. The method comprises the following steps: performing time-space synchronous acquisition and calibration on multi-modal sensor data to obtain a time-space aligned original data set, and performing layered signal enhancement on the original data set to obtain a visual feature tensor and an audio feature tensor; dense crowd detection and tracking are carried out according to the visual feature tensor to obtain a target crowd space-time trajectory matrix, and sound source localization and beam weight calculation are carried out in combination with the audio feature tensor to obtain a beam forming weight vector; performing multi-constraint dynamic optimization in combination with environmental parameters in the multi-modal sensor data to obtain an adaptive control parameter set, and finally performing real-time beam forming in combination with a loudspeaker sequence to obtain a directional sound field output signal. According to the invention, target detection, sound source localization and dynamic adaptive control are combined on the multi-source data, so that the beam direction is dynamically adjusted.

The invention discloses a photoelectric fusion beam control method and device based on a reconfigurable intelligent reflecting surface. The method comprises the following steps: acquiring internal and external parameter matrixes of a binocular camera and a binocular-RIS coordinate transformation matrix; capturing a binocular image stream of a detection target by using a binocular camera and executing stereo matching to obtain a disparity map and depth data of a binocular image; detecting a target image in the binocular image and outputting bounding box information of a center point of the target image; calculating target image coordinates through the depth data and the bounding box information, and converting the target image coordinates into three-dimensional space coordinates under an RIS coordinate system so as to determine the spatial position of the target; generating an RIS phase codebook according to the target spatial position, wherein the RIS phase codebook comprises a near-field phase compensation item; and loading the phase codebook to the RIS unit to form a target beam so as to perform directional tracking on a target. According to the technical scheme of the invention, high-precision beam control and stable positioning and tracking of the target can be realized in a complex multi-target environment.

The invention provides an air-ground integrated reconfigurable intelligent surface energy transmission system, and belongs to the technical field of wireless power supply systems, and the system comprises a visual perception module which is used for obtaining image information of a monitoring area, carrying out the recognition and positioning of an energy receiving target based on the image information, and outputting a target coordinate; the control calculation module calculates phase regulation and control parameter coordinates required for driving the reconfigurable intelligent surface based on the received target; the energy transmission module dynamically adjusts the wavefront phase of the electromagnetic wave based on the phase regulation and control parameter coordinates to form an energy focus point at the position of the energy receiving target; the energy receiving module is arranged on an energy receiving target and used for receiving the electromagnetic energy at the energy focus point and converting the electromagnetic energy into direct-current electric energy. According to the invention, the three technical fields of high-precision real-time sensing, intelligent signal processing and advanced electromagnetic beam control are deeply integrated, and remote, high-efficiency and automatic charging for a plurality of freely moving devices is realized.

A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.

The technology described herein is directed towards a reconfigurable surface device that reflects an impinging electromagnetic signal, with a phase profile determined by vertical positioning of a flexible metallic ground plane beneath metallic resonating elements of the reconfigurable surface. The vertical positioning forms different gaps between portions of the flexible ground plane and the respective metallic resonating elements above those portions, to determine the direction of the reflected beam. In one implementation, four individually linear actuators (vertical driving motors) are mechanically coupled to the corners of the ground plane of a metasurface (panel). These actuators and motors are independently controlled to establish the phase profile, by determining the amount of vertical positioning of each corner of the flexible ground plane to steer the reflected beam. The low-cost design can operate to steer millimeter wavelength beams in many wireless communication scenarios.

Disclosed are an information transmission method, a first node, a second node, and a storage medium. The information transmission method may include: sending a first beam control message to a second node, the first beam control message comprises at least beam behavior information, and the beam behavior information is used for indicating a beam control behavior to be executed by the second node.

The invention provides a beam control system for BNCT treatment. The system comprises a treatment control module, an accelerator control module and a flux monitoring module. The treatment control module is used for acquiring the delivery dose and the delivery time of the BCNT in real time so as to trigger a beam stopping instruction based on the delivery dose or the delivery time, and transmitting the beam stopping instruction to the accelerator control module so as to terminate neutron beam delivery; the accelerator control module is used for receiving a beam stop instruction to correspondingly close the proton beam so as to terminate neutron beam delivery, and automatically close the proton beam when an abnormal condition occurs; the flux monitoring module is used for monitoring neutron flux in real time and transmitting monitoring data to the treatment control module so that the treatment control module can obtain the delivery dosage in real time based on the monitoring data. According to the application, the delivery of the beam is accurately controlled and the delivery dose and the delivery time are monitored in real time in the BNCT treatment process, so that the accuracy and the safety of the beam delivery of the equipment are ensured.

The invention relates to the technical field of antenna control, and discloses a control method for a leaky-wave antenna and a communication device. The method comprises the following steps: measuring the dispersion characteristic of the leaky-wave antenna, establishing a second-order nonlinear mapping relation between a propagation constant and a control voltage, and obtaining a dispersion control parameter group; reversely deducing the target beam directional angle to obtain a target propagation constant, and calculating an initial voltage value of each control unit in combination with the parameter group to form a voltage gradient control sequence; correcting the propagation constant of each unit by adopting a distance compensation algorithm, and recalculating to obtain distance self-adaptive voltage distribution data; and detecting a beam quality factor in real time, updating voltage distribution data through a gradient descent algorithm when the beam quality factor deviates from a target value, and outputting a control voltage sequence to drive each control unit. The leaky-wave antenna control method and device solve the problems that in an existing leaky-wave antenna control technology, the beam quality is reduced and the data rate is sharply attenuated during long-distance transmission, and the beam control precision and the long-distance transmission performance of the leaky-wave antenna in the terahertz frequency band are improved.

This disclosure relates generally to a composite reconfigurable intelligent surface system for real time beam steering and method thereof. Conventional method for real time beam steering includes bulky systems with several antenna elements and amplifiers to shape and control the beam. The present disclosure provides a composite reconfigurable intelligent surface (CRIS) for real time beam steering. The CRIS is formed from a set of constituent reflecting surfaces which in turn are generated from unit cells. These unit cells are responsible for providing individual phase reflection performance utilizing the installed varactor diode in each unit cell. The CRIS can provide a) multi-beam reflection performance, b) polarization sensitive operation, c) 2D beam steering abilities, d) real-time beam control, e) null point reduction for beam shaping requirements and f) dependable pattern stability over a suitable range of frequencies.

The invention provides a method for assisting a movable antenna to realize secure communication by STAR-RIS, and relates to the technical field of wireless communication. According to the method, the safety and the rate of the system are maximized by jointly optimizing the beam forming of the base station, the position of the movable antenna and the STAR-RIS coefficient matrix. The method specifically comprises the following steps: constructing a downlink MIMO system and establishing a joint optimization problem; decomposing the joint optimization problem into three sub-problems by adopting an alternate optimization framework; respectively utilizing a particle swarm optimization algorithm and a weighted minimum mean square error method to be combined with a Majoritization-Minimalization algorithm to solve each sub-problem, and respectively utilizing the particle swarm optimization algorithm and the weighted minimum mean square error method to be combined with the Majoritization-Minimalization algorithm to solve each sub-problem; and alternately executing related steps until system security and rate convergence to obtain a solution of the joint optimization problem. By the adoption of the method, the safety communication performance of the system is remarkably improved, full-space coverage and precise beam regulation are achieved, the algorithm convergence is high, the solving efficiency is high, and the method is suitable for a downlink system with multiple users and multiple eavesdropping nodes.

The embodiment of the invention particularly relates to a dosage monitoring device based on a scintillation fiber array and a beam control device. In the dose monitoring device, when a beam passes through a two-dimensional scintillation optical fiber array detector, a plurality of first scintillation optical fibers arranged in parallel in a first scintillation optical fiber layer and a plurality of second scintillation optical fibers arranged in parallel in a second scintillation optical fiber layer are excited to emit scintillation fluorescence, and the scintillation fluorescence is transmitted along the optical fibers and received by a photoelectric detection unit; and the photocurrent signal is further converted into a voltage pulse signal by the current-voltage conversion unit, and the output dose information and the radiation field dose distribution information of the electron accelerator can be further obtained according to the voltage pulse signal.

The invention provides a liquid crystal antenna array beam control method and device, electronic equipment and a storage medium, and aims at determining a target beam which is most matched with a user demand through switching of a high-gain beam and a low-sidelobe beam so as to meet diversified demands of a user. And determining a target performance requirement to determine a performance optimization direction, and determining a phase shift range to determine a voltage corresponding phase and voltage corresponding loss of the liquid crystal phase shifter corresponding to the target wave beam, thereby realizing a performance optimization effect of improving different types of target wave beams in a targeted manner. And finally, optimizing the target beam according to the phase corresponding to the voltage, the loss corresponding to the voltage and the phase shift range until the optimized target beam meets the target performance requirement, outputting a voltage codebook, obtaining the voltage codebook meeting the user requirement, and meeting the diversified requirements of the user for the liquid crystal antenna array through performance optimization.

The invention relates to the technical field of communication beam control, in particular to a beam control algorithm for wireless communication, which comprises the following steps of: selecting an initial beam direction set through a preset beam mode library; constructing a channel state feature map through a deep learning model, and predicting a future channel change trend of the user; according to the future channel change trend of the channel state feature map, preliminarily adjusting the beam direction set to generate a plurality of candidate beam directions; the self-adaptive tuning module based on reinforcement learning adjusts the beam width, so that the beam is concentrated in the target user direction and covers a potential multi-path reflection path; and continuously updating the beam pattern library and the deep learning model. According to the invention, the beam direction can be dynamically adjusted, so that the effectiveness and stability of signal coverage are improved, and the communication quality in a complex propagation environment is ensured.

The invention discloses a phased array distributed hierarchical control wave control system and a wave beam control method, and relates to the technical field of signal processing, the wave control system comprises a main control FPGA module, a plurality of sub-control FPGA modules and a plurality of T / R wave beam forming modules; the master control FPGA module is used for receiving a user instruction and outputting a phase shift control instruction according to the user instruction; the plurality of sub-control FPGA modules are in interactive connection with the main control FPGA module, and the sub-control FPGA modules are used for receiving the phase shift control instruction and outputting a phase shift code according to the phase shift control instruction; the plurality of T / R beamforming modules are respectively connected with the sub-control FPGA module and the antenna unit, and the T / R beamforming modules are used for receiving the phase shift codes and performing phase adjustment on the antenna unit according to the phase shift codes, so that not only can beam switching be quickly realized, but also the layout and wiring of a wave control board can be simplified, and the cost is reduced. And meanwhile, the requirements on the resources and the performance of the single FPAG and the cost of a wave control system are effectively reduced.

A base station is provided. The base station comprises means for sending a first physical downlink control channel (PDCCH) transmission using a first beam; means for sending a transmission to a wireless transmit / receive unit (WTRU), wherein the transmission comprises a medium access control (MAC) command that indicates a reference signal for a second beam for PDCCH monitoring; means for receiving an acknowledgement, ACK, from the WTRU, on a condition that the MAC command is sent; and means for sending a second PDCCH transmission using the second beam.

The embodiment of the invention provides a radar signal processing system and method, and relates to the field of radar signal processing, the system comprises an antenna extension set and a channel signal processing and wave control extension set, the channel signal processing and wave control extension set comprises an integrated channel module, a signal sampling and baseband processing module, an information processing module and a wave beam control module, the antenna extension set is used for receiving an echo signal, obtaining a radio frequency signal based on the received echo signal and sending the radio frequency signal to the channel signal processing wave control extension set, the integrated channel module is used for processing the radio frequency signal to obtain a first signal, and the signal sampling and baseband processing module is used for processing the first signal to obtain a second signal and sending the second signal to the antenna extension set. The information processing module is used for processing the second signal to obtain a third signal, the beam control module is used for carrying out beam forming on the third signal to obtain a beam signal and sending the beam signal to the antenna extension set, and compared with an existing phased array radar system architecture, communication transmission delay is reduced.

A laser radar receiving lens and a system thereof relate to the technical field of optical design. The laser radar receiving lens provided by the utility model comprises an aperture diaphragm, a first lens with positive refractive power, a second lens with negative refractive power and a third lens with positive refractive power which are sequentially arranged along an optical axis from an object side to an image side, and at least one of six surfaces of the first lens, the second lens and the third lens is an aspheric surface. According to the laser radar receiving lens obtained through the design, the aperture diaphragm is arranged in front of the sides, close to the object plane, of the first lens, the second lens and the third lens, light beam control outside the laser radar receiving lens is facilitated while the compactness of the overall size of the lens is guaranteed, and then the signal-to-noise ratio and the imaging quality of a system are improved.

The invention relates to the technical field of satellite communication, and discloses a small phased-array antenna satellite terminal, which comprises a terminal main body, and the terminal main body comprises a receiving / transmitting array plane used for transmitting and receiving satellite signals; the beam forming and control module is connected with the receiving / transmitting array plane and is used for beam forming control, data processing and signal scheduling; the frequency conversion module is connected with the receiving / transmitting array plane and the T / R assembly and is used for performing down-conversion processing on the received signal and performing up-conversion processing on the transmitted signal so as to be matched with a satellite communication frequency band; and the T / R assembly is connected with the beam forming and control module and the frequency conversion module. The flexibility, the stability and the communication performance of the satellite terminal are remarkably improved through a miniaturized design and an integrated module. The multi-protocol support of the communication port and the internet access port enables the data transmission to be more efficient and reliable, and the high efficiency of the power supply module ensures the long-time stable operation. Accurate beam control and efficient signal processing are realized.

The invention discloses an RIS assisted multi-user communication beam forming optimization method based on KAN-SAC, and belongs to the field of reconfigurable intelligent surface assisted communication. According to the method, the scene of RIS-assisted multi-user multi-input single-output communication is considered, the KAN-SAC algorithm is utilized to optimize the active beam forming of the base station and the passive beam forming of the RIS, then the system performance is maximized under implicit channel state information (CSI), and complex and expensive explicit channel estimation is avoided. According to the method, complex nonlinear mapping is better expressed through two layers of KAN modules, a softmax approximate quantization mechanism is fused in action output, the blocking problem of discrete actions on gradient propagation is effectively relieved, the model can process continuous and discrete hybrid control at the same time, and the method is suitable for large-scale popularization and application. And the method is simultaneously adaptive to the continuous active beam control of the base station and the discrete phase selection of the RIS. According to the method, the joint optimization problem of active beam forming and passive beam forming can be effectively solved without depending on perfect or imperfect explicit channel estimation.

The present invention discloses a general-purpose low-profile active array antenna system, which includes an antenna module, a multi-functional structural frame, a power divider module, a beam control module, a radio frequency connector, and a low-frequency connector. The multi-functional structural frame includes at least two cavities, and the partition between the two cavities includes a plurality of radio frequency connection holes and a plurality of low-frequency connection holes. The antenna module is connected to one of the cavities, the power divider module and the beam control module are connected to the other cavity. The radio frequency connector is located in the radio frequency connection hole, and the radio frequency connector connects the antenna module and the power divider module. The low-frequency connector is located in the low-frequency connection hole, and the low-frequency connector connects the antenna module and the beam control module. The beneficial effects of the present invention are as follows: the system composition is simplified, which is beneficial to the generalization, serialization, and standardization design of modules, and is more conducive to the realization of low-cost design of active array antennas.