44 results about "Array processing" patented technology

A novel frequency tunable bi-directional phased array processing consisting of variable phase shifting and amplitude adjustment which employs a vector modulator and active combiner and splitter is proposed. Advantages of the proposed bi-directional a phased array processing includes the following 1) compact size; 2) high efficiency; 3) reduced passive trace loss and power consumption; 4) active current combining; 5) high input-output isolation; 6) high resolution and precise gain control and unequal combining or splitting; 7) phase-invariant amplifier design; 8) high accuracy and high-resolution phase shifter; 9) frequency tunability, within a small frequency range and / or a large frequency range; and 10) optimal unequal combining or splitting.

This document describes techniques and systems for radar systems with an angle determination process for sparse uniform arrays. The described radar systems include a processor and an antenna that can receive electromagnetic energy reflected by an object in a surrounding environment. The antenna includes a one-dimensional (ID) or two-dimensional (2D) sparse array. The processor can use the received electromagnetic energy to determine a signal subspace associated with the object that includes an invariance equation. Using an estimated solution of the invariance equation, the processor determines a solution of the invariance equation. The solution of the invariance equation is used to determine an angular phase associated with the object. The processor can then use the angular phase to determine an angle associated with the object. In this way, the described angle determination process enables a radar system with a sparse array to efficiently determine an angle associated with an object without blind spots.

The invention relates to the technical field of ultra-precision optical manufacturing, in particular to a fast tool planing method for a micro-lens array, a medium and equipment. The method comprises the steps that a non-interference feasible planing tool is determined according to surface shape data of a micro lens array to be machined; building a parameter physical model of planing fundamental frequency, surface roughness and single unit machining duration based on micro lens unit parameters, cutter parameters and machining parameters; by taking a parameter limiting condition as a nonlinear constraint and the total processing duration as a target function, optimizing and solving fs, Rt, DL and fx to obtain the shortest processing duration; and finishing machining by adopting optimized parameters. According to the method, a multi-physical parameter model is innovatively constructed, collaborative optimization of optical performance (surface shape), process capability (roughness and dynamic characteristics) and manufacturing efficiency (processing time) is realized, nanoscale roughness and dynamic stability are ensured, a large-scale array processing period is remarkably shortened, and an efficient path is provided for batch manufacturing of ultra-precise optical elements.

The invention discloses a multi-source information fusion device and method for a humanoid robot. The device comprises a clock synchronization module and a sensor array processing module. The clock synchronization module is used for generating and distributing a global clock according to a clock source signal of the clock device or clock information of the Ethernet interface, so that the global clock is used as a working clock of the humanoid robot-oriented multi-source information fusion device; the sensor array processing module is used for configuring an interface of the sensor array processing module so as to adapt to a plurality of accessed sensors; and the sensor array processing module is also used for transmitting the global clock to the plurality of sensors and receiving multi-source sensor signals obtained by synchronous sampling of the plurality of sensors. According to the invention, the plurality of sensors are flexibly accessed through the configurable sensor array processing module, and the clock synchronization of the plurality of sensors is realized by combining the clock synchronization module, so that the hardware adaptability and the clock synchronization precision of the plurality of sensors are improved.

A method in a relay device that comprises a plurality of antenna arrays, includes configuring first beamforming setting for first set of antenna arrays of the plurality of antenna arrays of the relay device to establish a first link between the relay device and a source device. A first data stream is received with a first beam pattern from the source device through the first link and a second data stream with a second beam pattern is forwarded to a destination device through second link without de-modulating the first data stream. The method includes phase shifting, by antenna array of the plurality of antenna arrays, an incoming signal stream and an outgoing signal stream by a different value for each element within the first set of antenna arrays to minimize an interference between the incoming signal stream and the outgoing signal stream, respectively, through the phase shifting.

Methods and systems are described herein for adaptive beamforming and interference mitigation using a time synchronized scalable cohered on-array processing system (“system”). The system may be a phased array implementing a software-defined radio using multi-input-multi-output antenna elements. The system includes multiple subarray elements which are configured into a tiered array of scalable subarrays that performs intermediary collation, coherence, noise reduction, and adaptive beamforming operations through processor nodes disposed between tiers. The intermediary collation operations process discrete portions of node excitation data to enable the phased array to generate an adaptive beam profile that directs high-directionality beams toward desired targets while adaptively partitioning interference sources between subarray elements. Further, the system makes use of a scalable multidimensional array to provide telecommunication and electromagnetic wave manipulation operations for applications of varying scale.

The invention relates to the technical field of trenchless engineering, and discloses a long-distance heat distribution pipeline pipe-jacking track control system for complex geology, which comprises an ultrashort pulse laser used for generating a stable laser plasma channel along a pipe-jacking design axis as an absolute linear reference; the track correction module is used for correcting the accumulated error of the inertial navigation unit on line according to the detection result of a position sensitive detector on the pipe jacking machine on the channel; the sensing array self-calibration module is used for carrying out on-line self-calibration of three-dimensional coordinates on the distributed optical fiber earth sound sensing array laid along the line by using acoustic shock waves generated during channel generation; and the geological feed-forward module is used for processing the tunneling vibration signal by using the calibrated sensing array to generate a front geological model. According to the method, the problems of inertial navigation error accumulation and insufficient geological prediction capability are solved, and the precision and stability of long-distance pipe jacking track control are remarkably improved.

The invention discloses a single-board multimode sonar device for underwater human body detection. The single-board multimode sonar device comprises a PCB; the PCB is provided with a foresight transducer interface, a side scanning transducer interface and a DVL interface. A pulse driving and transmitting / receiving switching protection circuit, a multi-channel analog front end (AFE), an analog-to-digital converter (ADC), a field programmable gate array (FPGA) processing unit, a peripheral memory of the FPGA processing unit and a high-speed data transmission interface are also integrated on the PCB; the FPGA is configured to perform channel-by-channel matched filtering, envelope detection, whole sampling alignment, fractional sampling delay filtering, delay-and-sum beam forming, motion compensation implemented based on speed or displacement information provided by the multi-beam Doppler velocity measurement interface, and confidence-weighted foresight and side-scan image fusion on echo signals from the ADC. And the fused human body / seabed echo image is output through the high-speed data transmission interface. According to the invention, the pulse driving, the receiving front end and the coherent clock distribution are realized on the same circuit board, and the digital alignment and fusion algorithm is implemented in the FPGA, so that the wiring and phase errors are obviously reduced, and the echo coherence and the motion correction capability are improved.

The invention discloses an array processing method and device, electronic equipment and a storage medium, and relates to the technical field of array processing. The method comprises the following steps: creating an initial array according to a preset initial capacity, and setting a first reference space at the tail end of the initial array; wherein the first reference space is used for storing a first address of a capacity expansion array or an array reference table; in the process of storing the target data in the initial array, when it is judged that the capacity of the initial array is full and the target data is not completely stored, array dynamic capacity expansion processing is conducted on the basis of the first reference space, the expanded array is obtained, and the target data continues to be stored in the expanded array. According to the method and the device, the array dynamic capacity expansion can be realized under the condition of maintaining good system performance.

This invention relates to the field of ultra-precision machining technology, and particularly to a method, medium, and equipment for obtaining the tool entry distance in the machining of large-scale microlens arrays. The method targets the tool positioning point within the aspherical surface region of the microlens unit. It discretizes the tool tip arc into spatial points and maps them to the workpiece coordinate system. The normal vector of each discrete point on the workpiece surface is obtained through the aspherical analytical expression. The absolute value of the inner product between the tool's discrete tangent vector and the workpiece normal vector is calculated, and the point with the minimum value is selected as the true contact point. Based on the Z-coordinate difference of this point, the Z-axis compensation is calculated as the tool entry distance. This method overcomes the limitations of traditional empirical compensation by dynamically reflecting the local contact relationship between the tool and the aspherical surface through the inner product criterion, avoiding systematic errors. Because the radius of the tool tip arc is smaller than the minimum radius of curvature of the microlens, it ensures that the contact point is a unique tangent point, effectively preventing overcutting of concave surfaces or high-curvature regions, and achieving high-precision machining.

Methods and systems are described herein for adaptive beamforming and interference mitigation using a time synchronized scalable cohered on-array processing system (“system”). The system may be a phased array implementing a software-defined radio using multi-input-multi-output antenna elements. The system includes multiple subarray elements which are configured into a tiered array of scalable subarrays that performs intermediary collation, coherence, noise reduction, and adaptive beamforming operations through processor nodes disposed between tiers. The intermediary collation operations process discrete portions of node excitation data to enable the phased array to generate an adaptive beam profile that directs high-directionality beams toward desired targets while adaptively partitioning interference sources between subarray elements. Further, the system makes use of a scalable multidimensional array to provide telecommunication and electromagnetic wave manipulation operations for applications of varying scale.

Methods and apparatus to estimate cardinality of users represented across multiple bloom filter arrays are disclosed. Examples includes processor circuitry to execute and / or instantiate instructions to generate a first composite Bloom filter array based on first and second Bloom filter arrays. The processor circuitry is to generate a final composite Bloom filter array based on the first composite Bloom filter array and a third Bloom filter array. Different ones of the first, second, and third Bloom filter arrays representative of different sets of users who accessed media. The first, second, and third Bloom filter arrays including differential privacy noise. The processor circuitry to estimate a cardinality of a union of the first, second, and third Bloom filter arrays based on the final composite Bloom filter array.

The application discloses a kind of multi-bridge site stamping extension forming plate and its processing method, six-stage process of adopting blank pretreatment, symmetrical positioning hole processing, stepped stamping bridge site forming, laser hole array processing, oblique extension forming, normal temperature leveling and shaping is formed.By stepped sectional pressure forming, it is ensured that bridge body is uniform and stable, high-precision forming hole is processed by pulse fiber laser, 5°-15° oblique extension and double-side synchronous constant clamping are used to realize the uniform flow of material, and residual stress is eliminated after leveling.The application can make the width of plate uniform and narrow, the extension size error is controlled within ±0.1mm, the flatness is ≤0.05mm / m, the waist type defect is completely eliminated, the forming stability and material utilization rate are improved, the automatic continuous stamping production of high elongation rate plate is adapted, and the forming qualified rate is high and the size consistency is good.

The invention discloses an energy-saving low-specific-speed multi-channel impeller and a design method thereof, the number N of multiple channels is larger than or equal to 3, and the design method comprises the following steps that (1) the specific speed ns is calculated according to the design flow Q, the design lift H and the design rotating speed n, and ns is smaller than or equal to 100; (2) selecting a proper impeller diameter D, and drawing a flow channel middle line axial plane projection drawing; (3) drawing a spiral line, and projecting to obtain a space center line of the runner; (4) calculating the inlet diameter D1 of the impeller; (5) the impeller inlet area S1 and the impeller outlet width b are calculated; (6) designing the geometric shape of the flow channel on the space center line in a segmented manner; (7) connecting the shape of each section of runner to form a runner curved surface; (8) carrying out annular array processing on the single flow channel; and (9) obtaining an impeller model. According to the multi-channel impeller, the flow channel diffusion degree of the multi-channel impeller can be accurately controlled, and particularly, effective balance and improvement of efficiency and reliability are achieved at the low specific speed.

A method for automatically placing and routing processing elements (PEs), where each PE has a limited connectivity to its neighbors. The method may obtain placement primitive (PP) location window information, the location window information defining possible locations of a group of PPs within a coarse-grained reconfigurable array (CGRA). The method may obtain hardware constraints regarding the array of PEs, the hardware constraints comprise local connectivity constraints and remote connectivity constraints. The method may receive a computation graph (CG) that represents mathematical expressions to be calculated by the array of PEs. The method may determine a location of the PEs of the array of PEs based on the CG, the PP location window information, and hardware constraints.

The application discloses a kind of L array DBF goniometry methods for LFMCW radiation source, the data received by L array is down-converted and extracted filtering in FPGA then according to two-dimensional linear array processing, utilize the advantage of parallel processing of FPGA, when DBF processing, two parallel routes of search and processing are divided, then the idea of two linear arrays and difference beam is FFT processed using the IP of FFT, after the result is converted into single-precision floating-point number, the data in FPGA is transmitted to ARM using the AXI IP of Zynq for subsequent processing and angle conversion.The application utilizes the low data amount DBF processing method, realizes the efficient transmission of data between FPGA and ARM by combining the AXI data line of Zynq series, greatly improves the overall performance of signal processing machine, ensures basic goniometry function while enhancing the real-time processing capability of system.

The utility model relates to a piezoresistance-capacitance composite sensor, which comprises a sensing array, a piezoresistance measuring circuit, a capacitance digital conversion circuit, a switch array and a processing module. Each measuring point in the sensing array is provided with a piezoresistive material which is separated to form an insulation interval, the piezoresistive material of each measuring point is correspondingly provided with a first electrode and a second electrode, the first electrode is reused as a capacitance sensing electrode, the second electrode is used as a near-ground end of the measuring point, and a gating switch is connected in series between the second electrode and the ground; the piezoresistance measuring circuit is respectively coupled with the first electrode and the second electrode of each point position through the switch array, and the capacitance digital conversion circuit is respectively coupled with the first electrode of each point position through the switch array; and the processing module is respectively coupled with the piezoresistance measuring circuit and the capacitance digital conversion circuit, and controls the on-off of each switch. The sensor provided by the utility model is simple and compact in structure, and has high spatial resolution and high sensitivity.

The invention discloses a space non-uniform null depth control method for a satellite anti-interference scene, solves the problems that the null depth is difficult to control and the null is offset and too narrow due to the fact that a traditional uniform array model cannot process phase nonlinearity, and belongs to the technical field of communication and radar signal processing. The method comprises the following steps: acquiring aperiodic two-dimensional coordinates of each array element in a spatial non-uniform array, calculating an array steering vector, defining a main lobe angular domain by taking an expected signal direction as a center based on the steering vector, defining an area except the main lobe angular domain in a scanning range as a side lobe angular domain, and carrying out dense discrete sampling in an interference source direction, a null angle domain is formed; taking the complex weight vector of the array element as an optimization variable, constructing a target function, introducing a constraint condition, and determining an optimization problem; and solving the optimization problem to obtain an optimal complex weight vector, and loading the optimal complex weight vector to array processing hardware.

The application discloses a miniaturized high-performance satellite navigation intelligent anti-interference method, relates to the technical field of satellite navigation and artificial intelligence, and combines compressed sensing MUSIC super-resolution DOA estimation and manifold optimization to realize anti-interference. The method realizes super-resolution DOA estimation under unknown steering vectors through compressed sensing MUSIC, combines manifold optimization to solve optimal beamforming weights on a complex unit sphere, and finally realizes efficient anti-interference in the Beidou B1 and GPS L1 frequency bands. The application realizes the balance among miniaturization, low power consumption and high performance through algorithm innovation, breaks through the array processing Rayleigh limit constraint from the perspective of anti-interference signal processing algorithm, and can realize low power consumption, light-weight deployment and less resources while guaranteeing anti-interference performance.

The invention belongs to the technical field of maintenance design of an SRIO port of an airborne radar processing system, and particularly relates to a maintenance system for an SRIO port of an array airborne radar processing system of an FPGA (Field Programmable Gate Array) processing chip, which is characterized in that a maintenance port of an SRIO IP (Intellectual Property) core in the array FPGA processing chip is connected to an AXI (Advanced eXtensible Interface) bus; sRIO port states of all node FPGA processing chips on an SRIO communication network are monitored by a Microblaze soft core of an FPGA processing chip of a main control module of an airborne radar processing system, and if the SRIO port of a certain node FPGA processing chip is found to be abnormal, the SRIO port of the node FPGA processing chip is accessed through an AXI bus for maintenance and repair. The airborne radar processing system does not need to be powered on and off, and data communication transmission of the SRIO communication network can be kept.

A threat analysis system and components comprising a wall covering that can be a roll-based wall covering. The wall covering can be embedded with scanning arrays, processors, and user interfaces for weapons detection.

A neuromorphic device (10) according to the present invention includes an M×1 input array (11) configured to convert an electrical input signal into an optical signal, an M×N processing unit (12) configured to execute photonic vector-matrix multiplication on the optical signal, an N×1 spike unit (13) configured to generate an optical spike signal based on an output signal from the M×N processing unit, an N×1 readout unit (14) configured to weight the optical spike signal, and optical waveguides (102) optically coupled to the M×1 input array, the M×N processing unit, the N×1 spike unit, and the N×1 readout unit, respectively.　With this arrangement, this invention can provide a neuromorphic device capable of executing signal processing with high accuracy.

This invention discloses a frequency domain array processing method for underwater acoustic single-carrier communication based on an ultra-short baseline array, belonging to the field of underwater acoustic communication. This invention solves the problem of poor reliability in existing communication systems based on ultra-short baseline receiver arrays. The invention employs a high-precision delay estimation method from underwater acoustic positioning to refine the propagation delay of M receiving channels, eliminating the influence of different fractional delays on the channel estimation results of each channel. The signal-to-noise ratio (SNR) after multi-channel merging is compared with the SNR of a single channel to obtain the conditions required for equal-gain selective merging of multiple channels. Based on the channel merging conditions, it determines whether the standard channel and candidate channels should be merged, thereby continuously improving the received signal-to-noise ratio, obtaining spatial diversity gain, improving the reliability of the communication system, and effectively avoiding inter-channel interference in traditional methods. This invention can be applied to frequency domain array processing of underwater acoustic single-carrier communication using ultra-short baseline arrays.

A method in a relay device that comprises a plurality of distributed transceivers, includes receiving, in a relay operation, a data stream from a source device over a first carrier frequency at a particular direction. The method includes adaptively selecting antennas from the plurality of distributed transceivers for the relay operation of the data stream and utilizing, during the relay operation, the adaptively selected antennas to establish and maintain a link with the source device based on a link throughput between the source device and the relay device.

The invention provides a pulse energy control method and system for femtosecond laser processing of a carbon nanotube film, and relates to the technical field of laser precision machining.The method comprises the steps that plasma spectral signals and intensity data generated when femtosecond laser processing of a carbon nanotube film micropore array is conducted are collected; extracting the characteristics of the carbon element and the metal catalyst element and generating a spectrum ratio; performing time gating integration processing on the plasma spectrum signal based on the ratio to generate a spectrum integration signal; carrying out moving average and frequency spectrum peak value locking processing on the integral signal, and identifying the spectral characteristics of the carbon nanotube after complete gasification; the energy adjustment amount is calculated according to the spectral characteristics, femtosecond laser pulse energy is controlled in real time by adjusting the driving voltage of the acousto-optic modulator, and closed-loop control over the micropore array machining process is achieved. According to the invention, the processing precision and the material integrity of the femtosecond laser processing carbon nanotube film are improved.

A method and system for forming test layout information, wherein the system comprises: an input module configured to provide a test layout, the test layout having a plurality of pattern arrays, and each of the pattern arrays having a plurality of test patterns; a size acquisition module configured to acquire a pattern array size of each of the pattern arrays and a pattern geometric size of each of the test patterns; an array processing module configured to perform array processing on the pattern geometric size and the pattern array size to obtain initial pattern array information, the initial pattern array information including vertex coordinates of each of the test patterns in a corresponding pattern array; and a format conversion module configured to perform format conversion processing on each of the vertex coordinates to convert a format of each of the vertex coordinates into an optical proximity correction model readable format to form the test layout information. The format conversion module does not need to write corresponding readable texts for tool interfaces provided by different third-party processing software, thereby reducing workload and improving test efficiency.

There is provided an apparatus, a method, and a computer program. The apparatus comprises a plurality of registers to store data, the plurality of registers comprising at least one array register. The apparatus comprises data processing circuitry for processing a sequence of instructions. The data processing circuitry comprises decoder circuitry responsive to receipt of one or more instructions specifying the at least one array register to control the data processing circuitry to perform array processing operations in relation to the at least one array register. The apparatus comprises extension processing circuitry responsive to identification, by the data processing circuitry, of a delegated task to perform the delegated task asynchronously to the data processing circuitry. The decoder circuitry is responsive to a delegation instruction to trigger the extension processing circuitry to perform, as the delegated task, one or more operations associated with one of the array processing operations.

The invention discloses a BPSK (Binary Phase Shift Keying) signal processing method based on a circular antenna array and adaptive beam forming, and relates to the technical field of array signal processing and digital communication simulation. The method comprises the following steps: constructing a full-link integrated simulation environment, generating a BPSK radio frequency signal formed by root raised cosine, superposing noise and constructing a steering vector to form an array signal; and evaluating signal-to-noise ratio gains and pointing precision of different array configurations by traversing a total space angle, and determining an optimal array. For segmented dynamic input signals, weight vectors of various adaptive criteria are calculated in real time to perform dynamic beam forming and demodulation. And the system optimizes the optimal adaptive criterion according to the output signal-to-noise ratio and the pointing precision index. Closed-loop verification from modulation emission and dynamic beam forming to demodulation evaluation is realized, array configuration and algorithm can be cooperatively optimized under a high-fidelity dynamic channel, signal-to-noise ratio gain and pointing precision of a system are remarkably improved, and reliable simulation reference and engineering guidance are provided for real-time array processing.