44 results about "Line array" patented technology

An antenna array, comprising a first sub-array, a second sub-array, a first feed structure, a second feed structure, a third feed structure, and a fourth feed structure; the first sub-array comprises a plurality of first elements, and the second sub-array comprises a plurality of second elements; the feed direction of the first feed structure and the feed direction of the third feed structure are the same, and are different from the feed direction of the second feed structure, and the feed direction of the second feed structure and the feed direction of the fourth feed structure are the same; first feed points of some first elements are connected to the feed structure, second feed points of the first elements are connected to the second feed structure, first feed points of the remaining first elements are connected to the third feed structure and second feed points of the remaining first elements are connected to the fourth feed structure; third feed points of some second elements are connected to the third feed structure, the second feed points of the second elements are connected to the fourth feed structure, third feed points of the remaining second elements are connected to the first feed structure, and fourth feed points of the remaining second elements are connected to the second feed structure.

A control device (50) for an electronically swiveling antenna array (100) is disclosed. The antenna array (100) comprises several adjacent sub-apertures (110, 120, ...) each with a plurality of antenna elements (111, 112, 121, 122, ...). Each sub-aperture (110, 120, ...) is configured to generate a swiveling antenna cone (210, 220, ...). The control device (50) is configured to selectively control the following modes: a first mode (M1) in which at least two antenna cones (210, 220) from at least two sub-apertures (110, 120) overlap; a second mode (M2) in which two antenna cones (210, 220) of at least two sub-apertures (110, 120) are arranged adjacent to each other to form a fan of antenna cones (110, 120); and a third mode (M3) in which at least one of the antenna cones (110, 120) is pivoted, while another of the antenna cones (110, 120) remains directionally fixed.

The utility model discloses an integrated low-sound baffle sound box. The integrated low-sound baffle sound box comprises an upper sound box and a lower sound box, the upper sound box comprises an upper bottom plate, the lower sound box comprises a lower top plate, and the upper bottom plate and the lower top plate are integrally formed. The upper sound box further comprises an upper front baffle plate, an upper front back plate and an upper rear baffle plate, the upper front baffle plate and the upper front back plate are fixedly connected and form an upper sound box accommodating space for simultaneously accommodating a plurality of alto loudspeakers and a plurality of high-pitch loudspeakers, the alto loudspeakers are respectively embedded in the upper front baffle plate, and the high-pitch loudspeakers are respectively embedded in the upper front baffle plate or the upper rear baffle plate; and a gap is formed between the upper front back plate and the upper rear baffle plate. The integrated low-sound baffle sound box disclosed by the utility model has the beneficial effects that the baffle, the linear array and the high, medium and low-sound loudspeakers are seamlessly coupled together by adopting the high-integration box body, so that a sound field effect approximate to 360 degrees is formed.

The application discloses a kind of based on tight coupling array's ultra-wideband single pulse antenna and its radiation method, including first truncation, first tight coupling line array, second truncation, second tight coupling line array, third truncation, upper layer feed network and lower layer feed network, first truncation, first tight coupling line array, second truncation, second tight coupling line array and third truncation are sequentially connected from left to right, and its lower end is fixedly connected with lower layer feed network by passing through the fourth plug hole on upper layer feed network;Upper layer feed network and lower layer feed network are coupled connection, and lower layer feed network is electrically connected between first truncation, first tight coupling line array, second truncation, second tight coupling line array and third truncation;By exciting the first port of first feed network, and wave beam in xoz plane is generated;By exciting the second port of second feed network, difference wave beam in xoz plane is generated.The application has the advantages of compact structure, low profile and wide bandwidth, and can be used in ultra-wideband single pulse tracking system.

An antenna array assembly comprises a plurality of horn array elements, each comprising a waveguide horn and a plurality of radiator patches, a planar substrate to which the plurality of horn array elements is attached, the planar substrate having a ground plane comprising a plurality of slots on a first side and a plurality of feed tracks on the second side; and a ground conductor configured as a reflector, the ground conductor being disposed parallel to the planar substrate and behind the planar substrate with respect to the horn array elements. A plurality of conductive members is disposed such that each conductive member is between the ground conductor and a respective horn array element, each conductive member being perpendicular to the ground conductor, and each conductive member being electrically connected to the ground conductor.

The application discloses a kind of decoupling device and decoupling method, first decoupling unit is arranged above the intermediate position of two E face coupled antenna units, and second decoupling unit is arranged above the antenna unit, E face scattering wave with E face coupling wave amplitude equal, opposite phase is generated by first decoupling unit and second decoupling unit, E face scattering wave and E face coupling wave are mutually offset, realize E face decoupling, simultaneously, second decoupling unit also generates H face scattering wave and realizes H face partial decoupling, in addition, third decoupling unit is also arranged above the intermediate position of two H face coupled antenna units, H face scattering wave with H face coupling wave amplitude equal, opposite phase is generated by second decoupling unit and third decoupling unit, H face scattering wave and H face coupling wave are mutually offset, realize E face decoupling;Through the common effect of first decoupling unit, second decoupling unit and third decoupling unit, E face and H face of antenna array are decoupled.

1. The name of the design product: active linear array loudspeaker (LASOUNDX_P212 double 12 inches). 2. The use of the design product: for sound power amplifier. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

1. The name of the design product: three-frequency linear array loudspeaker (TI-MAX12). 2. The use of the design product: for sound playing, audio output. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a matrix space domain filtering and feature vector towed line array sonar array shape estimation method, and belongs to the field of array signal processing and sonar technology. The method firstly uses heading sensor measurement information to preliminarily estimate array element positions through an interpolation fitting method; based on the positions, conventional beam forming is carried out to obtain a coarse estimation azimuth angle of a target signal; a space domain matrix filter is constructed with the azimuth as the center to filter received data to suppress interference; finally, a covariance matrix of the filtered data is calculated and feature decomposition is carried out to extract main feature vector phase information, and the heading sensor information is combined to obtain accurate position coordinates of each array element through a coordinate rotation solution to realize array shape estimation. The application can effectively filter out interference in a complex environment with multiple signal incidence, significantly improves the precision and robustness of array shape estimation, and solves the technical bottleneck that the traditional feature vector method fails under multiple interference conditions.

The application relates to a deep sea shadow area target positioning method considering horizontal array direction finding errors. First, a conventional beam forming method is used to respectively perform target direction estimation on array receiving signals of two different sub-arrays of a large-aperture horizontal line array; then, according to the marine environment, a Bellhop ray model is used to model and simulate a sound field to obtain a direction estimation value distribution diagram at possible existing positions of the target; secondly, a cost function is established, and the possible existing position points of the target relative to the two sub-arrays are extracted by combining the target direction estimation results of the two sub-arrays; the possible existing position points of the target are converted into rectangular coordinate systems to perform straight line fitting, and two straight line equations are obtained; finally, the intersection coordinates of the two straight lines are the target positions obtained by the application. Compared with a traditional two-station direction finding cross positioning method, the method has higher positioning precision.

Speaker mounting systems configured to assembly a line array coupled to a support are provided. The mounting systems generally include an engagement system having a hanger assembly with a boom arm including upper connection points. In a first speaker, the upper connection points can be operably coupled to the support. The line array can include a second speaker having an engagement system including a hanger assembly having a boom arm with upper connection points operably coupled to the lower connection points of the first speaker. The boom arm of the second speaker can be pivotably coupled to the second speaker such that the boom arm is adjustable between at least a first position, corresponding to a first splay angle between front faces of the first and second speakers, and a second position, corresponding to a second splay angle between the front faces of the first and second speakers.

The invention relates to an underwater sound vertical line array element sensitivity in-situ calibration method based on a high-precision synchronous clock. According to the invention, the non-directional sound source and the standard hydrophone are combined to realize real-time calibration of the sound source level of the non-directional sound source; through the design of LFM signal emission, the anti-interference capability of signals and the multi-frequency-point sensitivity measurement of the underwater acoustic vertical linear array are improved. Time is synchronized by using a high-precision synchronous clock, and time interval data of the non-directional sound source and the underwater sound vertical line array are accurately measured; and calculating the sensitivity of each array element by using the sound source level data of each frequency point, the open-circuit voltage of each frequency point, the average sound velocity and the time interval data so as to realize in-situ calibration. According to the invention, the sound source level of the non-directional sound source is calibrated in real time, and the sensitivity in-situ calibration of the underwater sound vertical line array is realized by combining the time reference provided by the high-precision synchronous clock. The sea test experiment provides a specific embodiment for the in-situ calibration of the underwater sound vertical line array, and the result meets the uncertainty requirement.

The application relates to the technical field of underwater acoustics, ocean engineering and sonar, and discloses a deep-sea large-depth azimuth split target passive positioning method and system using a horizontal line array. The method obtains channel signal spectrum by processing time domain signals collected by a receiving array, and further obtains a spatial power spectrum estimation result, and then extracts two multipath azimuth angle estimation values and corresponding beam output sound fields; the two paths with the strongest energy are selected from the multipath paths, the azimuth angle cosine ratio value is calculated as a measured value, and a time delay spectrum is generated based on the beam output sound field to extract a time delay measured value corresponding to a maximum peak value; in combination with a pre-trained sound field calculation model, template values under different assumed distances and depths are obtained, and the target distance and depth are estimated by matching the measured value and the template value. The method is suitable for a deep-sea azimuth split scene and has the advantages of small calculation amount and strong real-time performance.

The invention discloses a horn antenna array and a signal transmission method thereof, and the horn antenna array comprises at least two horn antennas which are arranged in parallel, and the at least two horn antennas which are arranged in parallel comprise a first horn antenna and a second horn antenna which are adjacent to each other. The opposite surfaces of the first horn antenna and the second horn antenna are provided with coupling slot structures so as to form a signal transmission path between the first horn antenna and the second horn antenna, and a target coupling signal and a target leakage signal passing through the path are counteracted. Or weakening the target leakage signal through the target coupling signal; the slot structure information corresponding to the coupling slot structure is determined based on the target working wavelength and the signal information corresponding to the target leakage signal. The isolation degree between the horn antennas can be improved under the scene that the horn antenna array is densely arranged, the decoupling gap is simple in structure, does not occupy extra space, is easy to process, and reduces the decoupling cost.

The application provides a lens, a lens array and an array antenna. The array antenna comprises: a radiator array, the radiator array comprising a plurality of radiator units arranged according to a first array rule, the radiator array having at least a first array direction; and a lens array, the lens array comprising a plurality of lens units arranged according to the first array rule, the plurality of lens units corresponding one-to-one to the plurality of radiator units, each lens unit being configured to adjust the phase of electromagnetic waves emitted by the corresponding radiator unit; wherein, at least along the first array direction, different parts of the lens unit have different phase adjustment amounts for the electromagnetic waves, so that the lens unit can adjust the electromagnetic waves into a planar wave in a first plane. In the application, the radiator units can have a large spacing, so that the structure of the feed network can be simplified while the gain and directivity of the array antenna are ensured.

This invention provides a sound source localization method based on offline library construction of array element coordinates, which can be applied to the field of sound source localization technology. The method is applied to a localization array, which includes multiple array elements, among which a reference array element is included. The method includes: for each of the multiple array elements in any scanning direction within its scanning range; acquiring the scanning signal corresponding to each of the multiple array elements in its scanning direction; calling the fractional delay coefficient library and integer delay library corresponding to each of the multiple array elements; determining the fractional delay coefficient and integer sampling delay corresponding to each of the multiple array elements in its scanning direction; performing time delay compensation on the scanning signal to obtain the scanning compensation signal corresponding to each of the multiple array elements in its scanning direction; obtaining the signal spatial spectrum corresponding to any scanning direction based on the scanning compensation signal corresponding to each of the multiple array elements in any scanning direction; and determining the target direction of the sound source to be located within the scanning range.

The utility model relates to the technical field of antenna array discloses high accuracy directional inductive antenna array, including support, the support top fixedly connected with first fixed block, first fixed block top fixedly connected with first fixed column, the first fixed column outer wall fixedly connected with the omnidirectional antenna, first fixed block side wall fixedly connected with the connecting plate, the connecting plate inside rotation is connected with the limit post, the limit post outer wall fixedly connected with the support rod, the limit post one end fixedly connected with the hole plate, first fixed block side wall is provided with buckle assembly, the buckle assembly includes first hollow column. In the utility model, the wrench is driven to rotate the second fixed column, and then the second fixed column drives the clamping column to slide out the inside of the hole plate, the wrench is driven to rotate the support rod in the inside of the connecting plate, solve because the support rod cannot be folded, the overall size of antenna array is bigger, increased the difficulty of transportation and storage, improved the transportation convenient of antenna array.

The antenna array comprises a first sub-array, a second sub-array, a first feed structure, a second feed structure, a third feed structure and a fourth feed structure, the first sub-array comprises a plurality of first oscillators, and the second sub-array comprises a plurality of second oscillators; the feed directions of the first feed structure and the third feed structure are the same and are different from the feed direction of the second feed structure, and the feed direction of the second feed structure is the same as the feed direction of the fourth feed structure; the first feeding points of part of the first oscillators are connected with the first feeding structure, the second feeding points of the part of the first oscillators are connected with the second feeding structure, the first feeding points of the other part of the first oscillators are connected with the third feeding structure, and the second feeding points of the other part of the first oscillators are connected with the fourth feeding structure; the third feeding points of part of the second oscillators are connected with the third feeding structure, the second feeding points of the part of the second oscillators are connected with the fourth feeding structure, the third feeding points of the other part of the second oscillators are connected with the first feeding structure, and the fourth feeding points of the other part of the second oscillators are connected with the second feeding structure.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may communicate with a second network node using a line-of-sight (LOS) multiple input multiple output (MIMO) configuration at a frequency. The first network node may communicate, based at least in part on a multi-user MIMO (MU MIMO) mode, with a third network node using the LOS MIMO configuration and at the frequency, wherein the MU MIMO mode corresponds to an antenna system configuration of the rectangular antenna array, wherein the antenna system configuration includes at least one of an antenna assignment scheme, an antenna amplitude configuration, or an antenna phase configuration. Numerous other aspects are described.

The application discloses a mirror image multimodal direct extraction method for measuring acoustic liner acoustic impedance, and relates to the technical field of acoustic liner acoustic impedance measurement. The method is that a broken line array microphone is arranged on the opposite wall of an acoustic liner to simultaneously collect axial and lateral sound field information of a sound field, a multimodal Prony algorithm is used to realize full-modal decomposition of a three-dimensional multimodal sound field, a trust region method is introduced to solve an equation set, and finally, the acoustic liner acoustic impedance is analytically extracted. In this way, the lateral spacing of the array can be significantly improved, more sound field information can be obtained, the lateral modes can be better distinguished, the precision of the acoustic impedance extraction is significantly improved, the 3 kHz upper limit of the NASA method can be broken, the acoustic impedance extraction frequency under the three-dimensional multimodal aerodynamic sound field is greatly improved, and the extraction problem under nearly 10 kHz is solved.

The utility model relates to the technical field of sound boxes, in particular to a linear array phase control active sound box, which comprises a controller, a posture recognition module and a plurality of loudspeakers, the axes of the loudspeakers are positioned at the same horizontal height in the up-down direction, and the axes of the loudspeakers are distributed in a fan-shaped radial manner in the left-right direction; the posture recognition module is used for detecting and recognizing whether the current loudspeaker box placement state is a vertical placement state or a horizontal placement state in real time; the controller is used for correspondingly switching a vertical placement playing sound effect or a horizontal placement playing sound effect according to an identification result of the posture identification module; according to the utility model, the radiation range can be effectively widened, the situation that petal-shaped uneven wave beams are radiated when the loudspeaker box is horizontally placed can be improved, the sound field in the radiation area is more uniform, and the loudspeaker box can present a better sound production effect no matter the loudspeaker box is vertically placed or horizontally placed.

An antenna array device includes a ground plane, a substrate, an antenna array, and a plurality of patch elements. The substrate is disposed on the ground plane. The antenna array is disposed on the substrate. The plurality of patch elements is disposed on the substrate and arranged around the antenna array, and the plurality of patch elements is not connected to the ground plane.

1. Name of the product in this design: Line Array Subwoofer. 2. Purpose of this design: For playing audio. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a directionality adjustable PKE antenna array structure relates to antenna array technical field. Including, fixed rod, four support bars are fixed with equal distance on the outer wall upper surface of fixed rod along the circumference surface, and the one end of four support bars is rotatory and is equipped with four mounting plates, and adjustment structure is equipped in fixed rod and is equipped on four mounting plates, and adjustment structure includes sliding base, four connecting rods and inner thread square tube, and the outer wall of inner thread square tube is slidably embedded in fixed rod, and the top of inner thread square tube is fixed and is equipped on sliding base, and the outer wall of sliding base is slidably embedded in fixed rod. Through support bar, mounting plate, sliding base, connecting rod and inner thread square tube, can use the rotation control inner thread square tube to go up and down to make four connecting rods move upwards to make four mounting plates swing to the four directions to change antenna array self structure to improve signal receiving range.

The utility model relates to the technical field of sound boxes, in particular to an array sound box, which comprises a plurality of loudspeakers, the axes of the loudspeakers are positioned at the same horizontal height in the up-down direction, and the axes of the loudspeakers are distributed in a fan-shaped radial manner in the left-right direction; compared with a conventional linear array sound box, the linear array sound box has the advantages that the axial lines of the tweeters are distributed in the fan-shaped radial shape in the left-right direction, so that the radiation range can be effectively widened, and the problems that axial wave beams of a conventional linear array are too concentrated and the radiation range is small can be solved.

The application belongs to the technical field of antennas, and discloses a compact high-efficiency dual-polarized horn array antenna, which comprises a horn antenna array, a broadband orthogonal mode coupler, an upper layer one-to-thirty-two convex power distribution circuit and a lower layer one-to-thirty-two concave power distribution circuit; the horn antenna array comprises a plurality of stepped horn antenna units, and each stepped horn antenna unit is provided with a broadband orthogonal mode coupler at the lower end; the upper and lower layer one-to-thirty-two concave-convex power distribution circuits are located at the lower side of the broadband orthogonal mode coupler, and the upper layer one-to-thirty-two convex power distribution circuit and the lower layer one-to-thirty-two concave power distribution circuit jointly constitute a compact stepped dual-path power distributor, thereby improving the space utilization rate of the antenna array and reducing the profile height of the dual-polarized horn array antenna; the adjustable stepped power distributor prototype can be effectively applied in each stage of the feed circuit multiple times, the relative height of each stage of the ladder is adjusted, and the number of the overall model is reduced; and the cutting rotary layer design effectively improves the efficiency of the antenna array and improves the impedance matching between the horn antenna and the orthogonal mode coupler.

The application discloses a kind of underwater effective positioning methods of multiple vibration sources based on Stockwell transform time-frequency diagram.The method includes three steps of data acquisition, data preprocessing and model training.In the process of data acquisition, the vibration pressure signal of the set frequency is collected using the side line array, and the data is saved in real time by the control software of computer;In the data preprocessing stage, the signal of the sensor is removed noise, and the signal is subjected to Stockwell transform time-frequency diagram;In the process of using model training, the normalized combined time-frequency diagram is input, and the effective vibration source position prediction value is obtained.The method makes full use of the spectral characteristics of time series data, solves the problem that the original time series data characteristics are not obvious and difficult to extract, and the process is simple and easy to operate.The prediction algorithm used can be used for underwater vehicle cluster, detection, concealment and other tasks, avoids the danger of exposing the position by using sound wave positioning, and improves the success rate of underwater vehicle task execution.

1. The name of the design product: active waterproof linear array speaker (subwoofer). 2. The use of the design product: a multimedia speaker for playing audio. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The bottom of the design product is not easy to see or not visible during use, omit the top view.

The application discloses a two-dimensional sound source positioning system, method and device and a storage medium, and belongs to the technical field of sound source positioning. The sound source device in the two-dimensional sound source positioning system is used for generating a sound signal; the measuring device comprises a spectrometer, two radio heads and an oscilloscope, the two radio heads are symmetrically distributed in a linear array on a crossbeam of the spectrometer, the oscilloscope is connected with sound sensors in the two radio heads respectively, each sound sensor is used for converting a collected sound signal into an electric signal and then outputting the electric signal to the oscilloscope, the oscilloscope is used for displaying the electric signals of the two sound sensors and a difference signal of the two electric signals in a graphic form and displaying a peak-to-peak value in a numerical form; when the spectrometer is adjusted so that the waveform of the difference signal is a straight line and the peak-to-peak value is 0, the angles and distances of the two spectrometers are calculated by using a triangulation principle, and the position of the sound source device is obtained. The application can simplify the positioning algorithm of the sound source device, has excellent precision, is low in cost and easy to implement.

1. The name of the design product: active linear array loudspeaker (LASOUNDX_P209 double 9 inches). 2. The use of the design product: for sound power amplifier. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.