22 results about "Array gain" patented technology

The technology described herein is directed towards a metasurface (reconfigurable intelligent surface) that can be used to redirect signals to and from non-terrestrial network satellites. The metasurface can be passive, and provide signal array gain with respect to indoor user equipment sending and receiving signals to and from the network satellites. The metasurface can be portable for use in various scenarios. Further, the metasurface can be configured to operate in a transmission mode, in which incoming signal is passed through the metasurface, or can be reconfigured to operate in a reflection mode, in which incoming signal is reflected by the metasurface. Different phase shifts of the metasurface's unit cells result in array gain through constructive interference, by refraction in the transmission mode, or reflection in the reflection mode. The presence or absence of a removable back plane determines the transmission or reflection operating mode of the metasurface.

The application provides an avalanche photodiode focal plane array pixel gain simulation method and device, the method comprises the following steps: respectively under dark field conditions and light field conditions, a varying bias voltage is applied to an avalanche photodiode focal plane array, and a dark current response curve and a photocurrent response curve of an anode current of a pixel unit in the focal plane array are obtained respectively; under different bias voltages, a signal difference between the dark current response curve and the photocurrent response curve is extracted, and the pixel gain of the pixel unit is determined according to the signal difference. The pixel gain simulation method provided by the application can accurately obtain the pixel gain and is suitable for a silicon-based APD focal plane detector array with different pixel unit structures. In addition, the method can reveal the influence of internal electric field distribution changes caused by factors such as bias voltage on the array gain, thereby providing a theoretical basis and technical path for device optimization design in actual application scenarios.

Techniques are provided for enabling user equipment (UE) positioning based on angle estimation in millimeter wave (mmW) bands. An example method for determining a position of a mobile device includes sending array gain information to a network entity, the array gain information including beam pattern information based at least in part on a sub-band and a state of the mobile device (1402), receiving one or more reference signals in one or more sub-bands, wherein a receive beam for each of the one or more reference signals is based at least in part on a sub-band in which the one or more reference signals are received and a current state of the mobile device (1404), determining a measurement based on the one or more reference signals (1406), and determining the position of the mobile device based at least in part on the measurement.

This invention belongs to the field of spherical array layout design, and discloses a broadband high-gain spherical array layout method based on co-frame design, according to the upper limit f of the operating frequency of the closely packed spherical array. max Calculate the approximate element spacing d0 = (c / f max Step 2: Based on the array space, calculate the maximum diameter R, vertical height H, and vertical arc length L of the spherical array. H This invention addresses the problem of insufficient low-frequency gain caused by the limited installation space of spherical arrays. By using a design that combines a vector sparse spherical array with a scalar close-packed conformal array, it achieves high low-frequency gain, enabling it to have broadband high array gain with only a slight increase in the number of preprocessing channels, thus meeting the requirements for full-band detection.

The utility model discloses a hybrid multi-beam antenna array structure, and aims to solve the problems of complex layout, poor directional diagram indexes of two frequency bands, large number of arrays and high cost of the conventional antenna array. The structure comprises a reflecting plate, two columns of first intermediate frequency oscillator units, four columns of second intermediate frequency oscillator units and two columns of low frequency oscillator units are installed on the upper surface of the reflecting plate, and the two columns of first intermediate frequency oscillator units are located on the sides, away from each other, of the two columns of low frequency oscillator units. The four columns of second intermediate frequency oscillator units are located on the sides, close to each other, of the two columns of low frequency oscillator units. The hybrid multi-beam antenna array is concise in layout, adopts a Butler matrix mode, adopts four rows of parallel oscillators in parallel and horizontal staggered array formation for double beams, adopts bridge connection, has few cables and few welding spots, adopts PCB planar oscillators to be embedded in an intermediate-frequency array for low frequency, and meanwhile, two rows of conventional beams are arranged on two sides at 65 degrees, so that the array gain is improved, the number of the oscillators is reduced, and the cost is reduced. The production is easy and the cost is lower.

The application discloses a ship radiated noise power spectrum measurement method based on frequency difference beam forming, comprising the following steps: obtaining a to-be-measured radiated noise signal received by a base array; constructing a difference frequency signal through the conjugate product of the to-be-measured radiated noise signal and a reference frequency signal; performing beam forming on the constructed difference frequency signal based on the difference frequency, and calculating the amplitude of the beam output signal of the difference frequency signal; correcting the amplitude of the beam output signal of the difference frequency signal by using the amplitude of the reference frequency signal to obtain the amplitude of the to-be-measured radiated noise signal, and calculating the power spectrum of the to-be-measured radiated noise signal. The application converts the signal outside the design frequency band of the base array to the inside of the design frequency band to perform beam forming, improves the array gain, better suppresses the environmental noise, improves the measurement performance of the base array on the radiated noise outside the design frequency band, greatly expands the frequency band width of the ship radiated noise measurement, and can realize the measurement of the radiated noise with a larger bandwidth by using a smaller aperture array.

Various embodiments are directed to systems, apparatus and methods providing an ultra-wide band (UWB) antenna configured to conform to a doubly curved surface and having an operating wavelength λ, the UWB antenna comprising: an array of electrically cooperating antennas emanating outward from a base region to respective locations of an outer surface region conforming to the doubly curved surface, the area of the outer surface region being divided in accordance with a mesh of unit cells defining thereby a plurality of edges, each of the unit cells having a unit cell minimum area selected in accordance with a desired array gain; wherein for each antenna the respective location of the outer surface region to which the antenna extends is associated with a respective one of the plurality of edges defined by the mesh of unit cells.

The invention provides an array super-gain weak target detection method based on an adaptive diagonal beam spectrum. According to the invention, on the basis of the bispectrum diagonal slicing idea, the array gain is improved by processing the high-order spectrum information of the target signal in the beam forming process, and the background noise is effectively suppressed; meanwhile, by introducing self-adaptive weight design based on diagonal loading, interference of strong target side lobes is effectively suppressed, and the angle resolution of the algorithm is improved. In a word, the method provided by the invention can improve the array gain level, can effectively suppress the interference of a strong target sidelobe, and improves the detection capability of a weak target.

The invention discloses a decomposition deconvolution beam forming method based on subspace clustering, and belongs to the field of direction of arrival estimation in passive detection. According to the invention, the problem of poor target discovery capability of the existing deconvolution beam forming algorithm is solved. According to the spectral clustering-based subspace decomposition method provided by the invention, the covariance matrix can be adaptively decomposed into the strong signal subspace and the weak signal subspace according to the size of the characteristic value without estimating the number of information sources, so that the problem of array gain reduction of a traditional deconvolution beam forming algorithm in a strong interference scene is solved; and the target discovery capability is improved. According to the DOA estimation method provided by the invention, null constraint deconvolution beam forming and a signal-to-noise ratio-based fusion algorithm are introduced, so that energy leaked to weak signal subspace components by interference can be effectively suppressed under non-ideal conditions, the influence of strong interference on a weak target can be effectively suppressed, and the robustness of the algorithm and the target discovery capability are improved. The method can be applied to direction-of-arrival estimation in passive detection.

The application discloses a two-dimensional array pulse self-synchronization wafer laser structure, which comprises an inner resonant cavity composed of a first reflecting layer, a saturable absorber, a wafer array gain medium and a second reflecting layer, and an outer resonant cavity composed of a phase grating structure layer and a third reflecting layer, and the inner resonant cavity and the outer resonant cavity form a composite resonant cavity; a pump light source emits pump light which is injected into the composite resonant cavity through a pump module, passes through the wafer array gain medium multiple times, and generates array oscillation laser in the inner resonant cavity; simultaneously, the saturable absorber absorbs and modulates the array oscillation laser, starts and maintains the array pulse operation; the array laser pulse enters the outer resonant cavity through the second reflecting layer, the phase grating structure layer causes the array pulse laser to be coupled, the array pulse laser returns to the inner resonant cavity through the third reflecting layer to be mutually injected, modulated and locked, the array pulse laser is synchronously operated in the composite resonant cavity, the collective mode laser pulse is formed, and the self-synchronized high-energy coherent array pulse output is realized.

The embodiment of the invention provides an array gain calculation method and device for a deep-sea near-sea-surface vertical array buoy, and relates to the technical field of array signal processing. The method is applied to a vertical array buoy and comprises the following steps: acquiring related parameters of the vertical array buoy and noise source parameters; calculating a first contribution value of near-field noise to noise cross-spectrum density and a second contribution value of far-field noise to noise cross-spectrum density based on the vertical array buoy related parameters and the noise source parameters; determining a noise cross-spectral density matrix based on the first contribution value and the second contribution value; determining the noise directivity gain of the vertical array buoy based on the beam scanning pitch angle and the noise source parameter; determining the signal directivity gain of the vertical array buoy based on the beam scanning pitch angle, the received signal and the signal cross-spectral density matrix; based on the noise directivity gain and the signal directivity gain, the array directivity gain of the vertical array buoy is determined, and then the array gain of the vertical array buoy is determined. According to the invention, the accuracy of array gain calculation can be improved.

This invention discloses a broadband array gain prediction method based on acoustic field spatial correlation correction. This method utilizes marine environmental data for acoustic field modeling, calculates the channel frequency response function from the target to each array element position, estimates the correlation coefficient of the received signal after channel distortion, and forms a signal correlation coefficient matrix. Furthermore, it uses an isotropic noise field model to estimate the inter-channel noise correlation coefficient after the processed frequency band deviates from the ideal frequency, forming a noise correlation coefficient matrix. Finally, it uses the two correlation coefficient matrices to calculate the array gain. This method can effectively reflect the coupling between the underwater acoustic array and the actual marine environment during operation, and can improve the accuracy of the array gain calculation results.

The technology described herein is directed towards subdividing a reconfigurable intelligent surface (RIS) into rectangular portions of subarrays of unit cells, which can be magnetically coupled subarray modules, for different functions / operations. The subdividing can be dynamic, such as based on different performance-based allocations, and each portion can have a separate directivity and / or array gain. Control signal data from a base station or user equipment instructs a tile controller for the RIS to change the respective numbers of unit cells for the various respective functions / operations, which can include a receive-and-forward function from the base station via the RIS to user equipment, and a receive-and-forward function from the user equipment via the RIS to the base station. There can be one subarray for receiving control information at the RIS from the base station, and one subarray for transmitting control information from the RIS back to the base station.

The application provides a multi-octave phased array design method based on a heterogeneous antenna combination, which comprises the following steps: step 1, constructing a high-frequency array; step 2, constructing a medium-frequency array; step 3, constructing a low-frequency array; step 4, constructing a multi-stage subarray synthesis switch network, or configuring an AD / DA module after each array element channel in a full-channel digital array manner, so that the sampled data after discretization is digitally beam synthesized according to the equivalent array element relationship; and step 5, configuring corresponding working frequency band components according to the antenna type, and configuring AD / DA modules according to the subarray output of each frequency band. The method improves the gain utilization rate of the system in the multi-octave working frequency band, reduces the number of hardware channels without reducing the effective radiation power and sensitivity, compresses the equipment cost, meets the balance between the array gain and the number of channels of the system, and changes the characteristic that the efficiency of a single antenna at low frequency is always lower than that at high frequency.

The disclosure provides a multi-channel same-frequency and same-phase silicon-based laser and a preparation method thereof. In the laser, a high-refractivity DBR grating area, a coupling silicon waveguide area, an over-mode coupling area, a transmission silicon waveguide area and a low-refractivity DBR grating area are sequentially arranged in a silicon waveguide layer; a bonding silicon oxide layer is arranged on the surface of the silicon waveguide layer; a gain epitaxial layer is arranged on the surface of the bonding silicon oxide layer and is bonded with the silicon waveguide layer through the bonding silicon oxide layer; an array gain waveguide is arranged in the gain epitaxial layer; the coupling silicon waveguide area is used for coupling gain light generated by the array gain waveguide through evanescent waves; the high-refractivity DBR grating area is used as a rear cavity surface of a resonant cavity to provide feedback light; the over-mode coupling area coherently couples independent light in each of the multi-channels to form a single coherent light beam; the transmission silicon waveguide area selects the single coherent light beam satisfying the same frequency and transmits the single coherent light beam; the low-refractivity DBR grating area and the high-refractivity DBR grating area form an overall resonant cavity, and the single coherent light beam realizes same-phase over-mode lasing in the overall resonant cavity.

A fitting device for a hearing aid earphone comprises an earphone main body and a remote controller, the earphone main body and the remote controller are connected through signals, and the earphone main body is internally provided with an MCU control unit, a DSP algorithm processor, a memory, a signal amplification processor, a microphone array gain regulator, an analog output gain regulator and a power supply module. Wherein the MCU control unit is in signal connection with a remote controller, is in output connection with the signal amplification processor, the microphone array gain regulator and the analog output gain regulator, and receives signal input of the memory and the DSP algorithm processor, and the power supply module supplies power to the earphone main body; the remote controller comprises a built-in MCU controller, a pure tone generation module, an LCD display screen and keys, the LCD display screen and the keys are arranged on a shell of the remote controller, the keys are connected to the input of the MCU controller, and signals of the MCU controller are output to the pure tone generation module and the LCD display screen.

The present invention relates to a kind of packaged antenna phased array radiation field pattern evaluation system suitable for small cell, including probe, field pattern measuring unit and operation unit.The fixed position probe sequentially touches the feeding point of the sub-antenna, and the field pattern measuring unit measures the N (>3) measured electric field amplitudes G i＝1～N And N measured electric field phases θ i＝1～N Corresponding to the i=1~N number of sub-antenna sequentially generated at the j sampling point.The operation unit calculates the displacement phase Δθ i(xyz) To correct the measured electric field phase θ i＝1～N , and according to the input phase shift Δθ i And amplitude scale factor S i To calculate the evaluation array gain G array Of packaged antenna.Avoid the introduction error of traditional technology measuring equipment and the relatively small static area requirement.

The technology described herein is directed towards a metasurface (reconfigurable intelligent surface) that can be used to redirect signals to and from non-terrestrial network satellites. The metasurface can be passive, and provide signal array gain with respect to indoor user equipment sending and receiving signals to and from the network satellites. The metasurface can be portable for use in various scenarios. Further, the metasurface can be configured to operate in a transmission mode, in which incoming signal is passed through the metasurface, or can be reconfigured to operate in a reflection mode, in which incoming signal is reflected by the metasurface. Different phase shifts of the metasurface's unit cells result in array gain through constructive interference, by refraction in the transmission mode, or reflection in the reflection mode. The presence or absence of a removable back plane determines the transmission or reflection operating mode of the metasurface.

The disclosure provides a kind of ray detector, silicon photomultiplier array gain correction method and storage medium, the method is by analog light source emits with the same characteristics of light signal when ray irradiation crystal, obtains parameter set under different environments, and calculates difference matrix, dynamically adjusts the reverse bias of each SiPM, solves the gain consistency problem, temperature and aging influence problem and multi-channel consistency problem.Through these measures, the energy resolution, long-term stability and calibration efficiency of the detector are significantly improved, the reliability of the system is enhanced, and the maintenance requirements are predicted, which significantly improves the overall performance of the gamma ray detector.

The invention provides a composite optical fiber hydrophone array and a data fusion processing method. The array is formed by serially connecting an optical fiber interference type hydrophone array and an optical fiber distributed hydrophone array, and the optical fiber interference type hydrophone array comprises a plurality of interference type optical fiber hydrophone units which are connected in series and is used for acquiring high-sensitivity discrete sound signals; according to the optical fiber distributed hydrophone array, delay optical fibers between adjacent interference type hydrophone units are sensitized and packaged into distributed hydrophone sensing units, and a large number of equivalent measuring points are formed. Two types of signals are synchronously collected and fused, optical fiber resource multiplexing is achieved, the number of effective measuring points is greatly increased, high sensitivity and large-scale coverage are considered, array gain and detection performance are improved, and system cost and complexity are reduced.

The technology described herein is directed towards subdividing a reconfigurable intelligent surface into subarrays, or rectangular segments of unit cells, for different functions / operations. The subdividing can be dynamic, such as based on different performance-based allocations, and each segment can have a separate directivity or array gain. Control signal data from a base station or user equipment instructs a controller of the reconfigurable intelligent surface to change the respective numbers of unit cells for the various respective functions / operations, which can include a receive-and-forward function from the base station via the reconfigurable intelligent surface to user equipment, and a receive-and-forward function from the user equipment via the reconfigurable intelligent surface to the base station. There can be one subarray for receiving control information at the reconfigurable intelligent surface from the base station, and one subarray for transmitting control information back to the base station.

Methods, systems, and devices are described for wireless communication that provide measurement reports including UE receive beam information. The measurement report may include a measurement value and information about a receive beam used for the measurement. The receive beam information may include a beam level indication that provides a receive beam level according to a receive array gain or a maximum beamforming gain, according to whether the beam is an omnidirectional beam, a wide beam or a narrow beam, or any combination thereof. UE receive beam information may be reported for each channel measurement resource (CMR) based on a reporting format for measurement reporting.