211 results about "Perpendicular polarization" patented technology

The invention provides a common-caliber dual-polarization indoor distribution antenna and communication equipment, the common-caliber dual-polarization indoor distribution antenna comprises a vertical polarization antenna, a horizontal polarization antenna and a feed structure, the vertical polarization antenna comprises a metal floor, a triangular metal plate, a plurality of grounding metal columns and a first copper-clad layer, the triangular metal plate and the plurality of grounding metal columns are arranged between the metal floor and the first copper-clad layer; the horizontally polarized antenna comprises a double-layer dielectric plate and a slot array, the bottom of the double-layer dielectric plate is coated with copper to form a first copper-coated layer, and the slot array is arranged at the top of the double-layer dielectric plate; the horizontally-polarized antenna and the vertically-polarized antenna are arranged in a common-caliber mode, the structure is simple, and the size is small. The feed structure comprises a first feed structure and a second feed structure, the first feed structure is connected with the vertical polarized antenna, and the second feed structure is connected with the horizontal polarized antenna; the first feed structure and the second feed structure are arranged on the metal floor in a non-overlapping manner, so that coupling interference is avoided.

For example, an apparatus may include a baseband controller configured to control a plurality of dual-polarization Radio Heads (RHs) to communicate a Multiple-Input-Multiple-Output (MIMO) transmission, the baseband controller configured to control a first dual-polarization RH of the plurality of dual-polarization RHs to communicate a first spatial stream of the MIMO transmission with a horizontal-polarization via one or more first dual-polarization antenna elements of the first dual-polarization RH, and to control a second dual-polarization RH of the plurality of dual-polarization RHs to communicate a second spatial stream of the MIMO transmission with a vertical-polarization via one or more second dual-polarization antenna elements of the second dual-polarization RH.

The invention provides a radar signal anti-interference processing method and system based on a space-time attention mechanism. The method comprises the following steps: mapping an original horizontal polarization channel signal and an original vertical polarization channel signal into an interference suppression space, and generating a three-dimensional feature tensor comprising an amplitude component, a polarization phase difference component and an interference suppression residual component; according to the amplitude component, dividing a radar observation area into multiple layers of target blocks in a spatial dimension, and calculating a space-time association weight between adjacent layers of target blocks through a space-time attention mechanism; and according to the space-time correlation weight, screening out a plurality of target blocks meeting a preset continuous motion condition, and decoding a motion mode of the plurality of target blocks by using a long short-term memory network to generate an anti-interference target trajectory coordinate and a velocity vector. According to the method, the polarization characteristics and the space-time attention mechanism are fused, the anti-interference effect of radar signal processing in a strong interference environment is improved, and then the detection precision of the multi-target motion trail is improved.

The invention discloses a dual-polarization one-dimensional scanning phased-array antenna and a weather radar system, the antenna comprises a radiation layer, a first feed layer, a first PCB layer, a second feed layer, a second PCB layer and a third feed layer which are stacked from top to bottom, and a horizontal polarization radiation unit and a vertical polarization radiation unit of the radiation layer are arranged in an orthogonally staggered manner; each first feeder is etched on the top surface of the first PCB layer and corresponds to a first metal groove formed in the bottom of the first feed layer and a second metal groove formed in the top of the second feed layer in position; and each second feed line etched on the top surface of the second PCB layer corresponds to the position of a third metal groove formed in the bottom of the second feed layer and the position of a fourth metal groove formed in the top of the third feed layer. According to the invention, high cross polarization isolation is realized, and the antenna has dual polarization beams with low side lobes and consistent beam width and pointing height in the whole working frequency band.

The invention provides a microstrip antenna and electronic equipment, and relates to the technical field of antennae, and the microstrip antenna comprises a microstrip antenna body, a first liquid crystal phase shifter arranged at the horizontal polarization feed position of the microstrip antenna, and a second liquid crystal phase shifter arranged at the vertical polarization feed position of the microstrip antenna. The first liquid crystal phase shifter and the second liquid crystal phase shifter are configured to respond to the bias voltage signal to control the phase difference between the horizontal polarization wave and the vertical polarization wave of the microstrip antenna so as to control the microstrip antenna to be switched between the first circular polarization mode and the second circular polarization mode. According to the scheme, the first liquid crystal phase shifter and the second liquid crystal phase shifter are integrated in the microstrip antenna to control the microstrip antenna to be switched between the first circular polarization mode and the second circular polarization mode, so that the integration level of the microstrip antenna is effectively improved, the miniaturization design of the antenna can be realized, and the cost can be reduced.

The invention discloses a frequency domain adaptive clutter suppression method and system for a dual-polarization weather radar, and relates to the technical field of weather radar processing. According to the invention, pulse-level quality control and ground feature identification marking are carried out on radar original echoes; calculating power spectrums of the marking units, performing dynamic noise measurement and data quality grading, and screening out effective processing units; constructing a Gaussian mixture model of a power spectrum of an effective unit, and iteratively estimating model parameters through an expectation maximization algorithm to realize complete separation of a ground feature spectrum and a meteorological spectrum in a frequency domain; inverting single-channel parameters based on the separated meteorological spectrum; a cooperative spectrum separation strategy is adopted for horizontal and vertical polarization channels, and dual-polarization parameters such as differential reflectivity, correlation coefficients and differential phases are inverted based on the filtered dual-channel signals; according to the invention, high-precision separation of clutters and meteorological echoes is realized, the loss of meteorological signals is significantly reduced while ground features are effectively suppressed, and the accuracy and reliability of dual-polarization parameter inversion are improved.

A ceiling-mounted antenna (10), comprising: an antenna base (1); a vertical-polarization antenna (2), which comprises a reflecting plate (21) and an antenna element (22), the reflecting plate (21) being located between the antenna base (1) and the antenna element (22); a horizontal-polarization antenna (3), wherein a plurality of patch units (31) are distributed at intervals around the antenna element (22) and are located on the side of the reflecting plate (21) away from the antenna base (1); and a passive frequency-mixing module (4), which comprises a dielectric substrate (41), a passive frequency-mixing circuit (42) and a power division network (43), wherein the passive frequency-mixing circuit (42) is electrically connected to both the antenna element (22) and the power division network (43), and the power division network (43) is electrically connected to the plurality of patch units (31). On the basis of a low-frequency signal transmitted by means of a DAS, a 5G signal is obtained under the action of the passive frequency-mixing circuit (42), thereby implementing 5G communication of the ceiling-mounted antenna (10), and improving the indoor 5G communication quality. (FIG. 1)

A vehicle includes a window with an antenna assembly. The window includes a glass surface, a metal frame, and a set of defroster wires. A top defroster wire and a top edge of the metal frame define an antenna region. The antenna assembly includes a slot antenna disposed within the antenna region. The slot antenna is disposed on a glass surface of the window in a visible region of the window with a top side located proximate a horizontal cover line of the metal frame. A feed point is located in a central area of the slot antenna, and a first slot and a second slot of the slot antenna intersect at the feed point. A feed line extends from the feed point through a separation gap between the metal frame and the glass surface to connect the slot antenna to a communication device.

A system and method for determining an error vector magnitude (EVM) of a polarized transmission from a device-under-test (DUT). A first signal transmitted by the DUT is received via a horizontally polarized receiver antenna, and a second signal transmitted by the DUT is received via a vertically polarized receiver antenna. The second signal is coherent with the first signal. The EVM is calculated based at least in part on the first signal and the second signal and a reference signal.

A single-layer broadband vertically polarized endfire magnetoelectric dipole (ME-dipole) antenna and an antenna array. The main radiator of this antenna is a substrate-integrated closed loop, which consists of two horizontal metallic strips printed on the upper and lower surfaces of substrate and a pair of vertical metallic vias. Excited by a double-sided parallel-strip line at the center of the loop, the metallic vias function as electric dipoles while the entire loop aperture works as magnetic dipole. To facilitate integration, this magnetoelectric dipole loop antenna is fed by an open-ended substrate integrated waveguide (SIW), which also works as a backed cavity to enhance the front-to-back ratio. Moreover, rectangular slots are etched at the edges of the SIW aperture to further improve the front-to-back ratio and also the cross-polarization performance. Thus, a vertically polarized endfire ME-dipole loop antenna with a low-profile structure, broad bandwidth, and stable radiation performance is achieved.

The invention discloses a millimeter wave dual-polarization phased-array antenna beam forming method and device, and relates to the technical field of high-frequency communication, and the method comprises the following steps: obtaining a complex weight signal of each array element in an antenna array under a horizontal polarization channel and a vertical polarization channel, respectively carrying out amplitude response and phase response acquisition and calibration processing on the complex weight signal; performing dynamic extraction and modeling on amplitude errors and phase errors of each array element in different polarization channels; on the basis of error estimation, constructing a machine learning prediction module comprising a time sequence prediction model; performing joint estimation on a real-time error estimation result and a prediction error result; constructing a hardware-software collaborative calibration structure comprising a dynamic gain control module on the basis of the compensation weight; beam focusing of the target space area is realized; according to the invention, the hidden problems of beam offset, sidelobe lifting, gain loss and the like caused by inconsistency of polarization channels are solved.

A magneto-electric dipole antenna array includes a substrate and at least one antenna unit. Each of the at least one antenna unit includes an electric-dipole component, a magnetic-dipole component, a first feeding probe, a second feeding probe and a stripline. The electric-dipole component is disposed on an upper surface of the substrate. The magnetic-dipole component is disposed in the substrate and between the upper surface and a lower surface of the substrate, and is electrically connected to the electric-dipole component. The first feeding probe is disposed on the upper surface of the substrate for vertical polarization. The second feeding probe is disposed in the substrate and between the upper surface and the lower surface of the substrate for horizontal polarization. The stripline is disposed in the substrate and between the first feeding probe and the second feeding probe for capacitive coupling.

The utility model relates to a high-gain dual-polarized waveguide slot antenna array, and belongs to the technical field of radars. Comprising a horizontally-polarized antenna and a vertically-polarized antenna which are arranged in a staggered mode, the horizontally-polarized antenna is composed of a horizontally-polarized radiation waveguide, a horizontally-polarized rectangular power dividing waveguide and a feed waveguide, and the horizontally-polarized radiation waveguide is located above the horizontally-polarized rectangular power dividing waveguide and connected with the horizontally-polarized rectangular power dividing waveguide through a transition waveguide; the feed waveguide is mounted on the lower side of the horizontal polarization rectangular power division waveguide; the vertical polarization antenna is composed of a vertical polarization radiation power division waveguide, a vertical polarization rectangular power division waveguide and a feed waveguide, the vertical polarization radiation power division waveguide is located above the vertical polarization rectangular power division waveguide and connected with the vertical polarization rectangular power division waveguide through a transition waveguide, and the feed waveguide is installed on the lower side of the vertical polarization rectangular power division waveguide. According to the utility model, the feed waveguide and the radiation waveguide are integrally processed in a mode of stacking multiple layers of waveguides; the waveguide feed network is used for feeding, and has remarkable advantages compared with a traditional micro-strip or strip line network.

A vehicle includes a window with an antenna assembly. The window comprises a glass surface, a metal frame, and a series of defroster wires. An upper defroster wire and the top edge of the metal frame define an antenna area. The antenna assembly includes a slotted antenna located within the antenna area. The slotted antenna is positioned on a glass surface of the window in a visible area of ​​the window, with its top surface located near a horizontal cover line of the metal frame. A feed point is located in a central area of ​​the slotted antenna, and a first slot and a second slot of the slotted antenna intersect at the feed point. From the feed point, a feed line extends through a separation gap between the metal frame and the glass surface to connect the slotted antenna to a communications device.

The invention discloses an ultra-wideband miniaturized vertical polarization horizontal omnidirectional radiation antenna, and belongs to the technical field of antenna engineering and wireless communication. The antenna comprises a vertical polarization radiator, a metal top cap, a parasitic metal column, a metal floor and a polarization surface, wherein the vertical polarization radiator is composed of four miniaturized Vivaldi antennas which are placed towards the end-fire direction; the metal top cap and the metal floor are respectively located above and below the radiator, the polarization surface surrounds the periphery of the radiator, and two ends of the parasitic metal column are respectively connected with the metal top cap and the metal floor. The miniature Vivaldi antenna is adopted to form the radiator, so that the problem of distortion of a high-frequency radiation pattern caused by the size of an ultra-wideband antenna is solved; a low-frequency magnetic dipole radiation mode is formed by using the parasitic metal columns, the metal top caps and the metal floor, and the low-frequency bandwidth is expanded. On the basis of miniaturization, the antenna provided by the invention can realize S11lt in 1-6GHz; and vertical polarization horizontal omnidirectional radiation of-10dB is realized, and the out-of-roundness of an omnidirectional radiation pattern is less than 3dB.

This application provides an identification device and method for soybean grain screening equipment in soybean milk production. The device scans and images the soybean surface. A polarization beam splitter in the camera's optical path separates the reflected light from the soybean surface into parallel polarized light and orthogonally polarized light with mutually perpendicular polarization directions, acquiring parallel and orthogonal polarized images. The parallel and orthogonal polarized images are adaptively fused to generate a polarization-fused image that suppresses surface reflection interference and enhances structural information. Texture periodic features characterizing the regularity of the soybean skin texture and distortion energy features characterizing the degree of surface undulation are extracted from the polarization-fused image. The texture periodic features and distortion energy features are input into a pre-constructed feature discrimination model for defect identification. Based on the defect identification results, it is determined whether defects exist on the soybean surface. Using the scheme of this application, polarization-fused imaging can suppress surface reflection interference, thereby improving the accuracy of soybean surface defect detection.

The invention relates to a dual-polarization 2bit transmission type metasurface unit working in a Ka wave band, which can realize four-state phase regulation and control of horizontal polarization and vertical polarization on a specified frequency band. And an implementation scheme with a better system integration advantage is provided for the high-frequency multi-polarization reconfigurable antenna system. The unit is composed of two groups of linearly polarized 2bit reconfigurable units which are orthogonally arranged, and each unit is composed of a pair of active receiving antennas at the bottom and a pair of active transmitting antennas at the top; a pair of PIN diodes are respectively integrated in a receiving antenna and a transmitting antenna, and four discrete phase states are realized through combination of switch states, so that 2-bit phase regulation and control are completed. The invention has the following advantages: 1, low transmission amplitude loss and precise phase gradient characteristic are shown in the dual-polarization Ka wave band, and high-precision wave beam regulation and control can be realized; 2, due to the fact that dual-line polarization adopts a synchronous regulation and control mode, the unit can complete phase control only through two feeder lines, and compared with an independent polarization control scheme, the complexity of a feed and bias network is remarkably reduced, so that interference of a bias circuit on electromagnetic radiation characteristics is effectively reduced; and 3, the emergent wave beam of the transmission type metasurface is located on the same side with the transmission type metasurface, so that the shielding of the feed source can be reduced, the interference of a reflection path is avoided, the aperture efficiency is improved, and the sidelobe is reduced.

The embodiment of the invention provides a dual-polarization indoor distribution antenna, and belongs to the antenna communication equipment technology, the dual-polarization indoor distribution antenna comprises a vertical polarization radiation unit and a horizontal polarization radiation unit, the vertical polarization radiation unit comprises a grounding plate and a conical radiation oscillator arranged on the grounding plate, the conical radiation oscillator is used for being excited to radiate vertical polarization electromagnetic waves; the horizontally polarized radiation unit comprises a plurality of radiation subunits, the plurality of radiation subunits are sequentially arranged around the peripheral side of the conical radiation oscillator, a radiation gap is formed between every two adjacent radiation subunits, and the radiation gaps are used for being excited to radiate horizontally polarized electromagnetic waves; the orthographic projection of the radiation subunit on the grounding plate is located in the grounding plate. According to the dual-polarization indoor distribution antenna provided by the embodiment of the invention, broadband coverage can be realized, and the multi-band requirement of an indoor communication system is met.

The application provides a unit-level inclined polarization ultra-wideband rectangular grid array antenna. Each antenna unit adopts a two-dimensional symmetrical structure composed of a horizontal polarization plane and a vertical polarization plane, the structure of the horizontal polarization plane and the vertical polarization plane is consistent, and the horizontal polarization wave and the vertical polarization wave are self-synthesized through one port; each plane of the antenna unit is composed of a feeding matching part and a radiation cavity part, the structure is simple, the unit-level inclined polarization radiation characteristic can be realized, and the array is a regular rectangular grid. The array antenna of the application can cover more than 9 times of the frequency, and can realize two-dimensional ±45° beam scanning in the working frequency range under the premise of sufficient array scale.

The utility model provides a beam forming antenna array, a radar and a vehicle. The beam forming antenna array at least comprises a power divider and an antenna unit. The power divider comprises a first port, a second port, a third port and a fourth port; the first port is respectively communicated with the second port, the third port and the fourth port through metal materials; the antenna unit comprises three linear arrays with the same structure, and the three linear arrays are respectively connected with the second port, the third port and the fourth port; each linear array comprises a plurality of array elements, and the plurality of array elements are connected through microstrip line feeders; the polarization mode of the linear array comprises vertical polarization or horizontal polarization. According to the invention, the requirements of a radar LRR mode and an MRR mode can be met at the same time, and the number of required linear arrays and the number of array elements required on each linear array are greatly reduced compared with the prior art.

A millimeter wave end-fire dual-polarized antenna array disclosed by the present invention comprises two dual-polarized units, each dual-polarized unit comprises a vertical polarization unit and a horizontal polarization unit, the vertical polarization unit is composed of a substrate integrated waveguide, a first metal patch, a second metal patch and a first metal through hole, and the horizontal polarization unit is composed of a second metal patch and a second metal through hole. The horizontal polarization unit is composed of a substrate integrated coaxial line, a dipole and a third metal patch; the rear end of the vertical polarization unit is connected with the substrate integrated waveguide power divider; the substrate integrated waveguide power divider is connected with the substrate integrated waveguide grounding coplanar waveguide; the rear end of the horizontal polarization unit is connected with the substrate integrated coaxial line power divider; the substrate integrated coaxial line power divider is connected with the substrate integrated coaxial line grounding coplanar waveguide; the grounding coplanar waveguide is connected to the coaxial joint for antenna excitation. The antenna has the characteristics of wide working bandwidth, compact structure, stable radiation performance and the like, and has a wide application prospect in millimeter wave wireless communication.

The present application relates to radar signal processing technical field, specifically provide a kind of staggered pulse repetition interval time-frequency domain dual-polarized radar detection variable estimation method, comprising: in frequency domain, the estimation of echo signal-to-noise ratio, reflectivity factor, differential reflectivity of horizontal / vertical polarization based on power spectral density;And the estimation of average Doppler velocity and velocity spectrum width;In time domain, after ground clutter filtering based on odd-even pulse, respectively, odd-even pulse correlation parameter estimation is carried out, so that two detection variables of dual-polarized radar correlation coefficient and differential propagation phase shift of odd-even pulse are obtained respectively, then odd-even combination can obtain the estimation result of accurate correlation coefficient and differential propagation phase shift.The present application realizes the accurate estimation of dual-polarized radar multi-class detection variable, ensures that estimation result is not disturbed by ground clutter interference, simultaneously adapts single pulse repetition interval and staggered pulse repetition interval two working modes, improves the reliability and applicability of radar detection.

The application discloses a high-isolation Ku-band full-bandwidth linear polarization duplexer for satellite communication, an E-plane rectangular waveguide is used for connecting a base mode TE 10 mode in a vertical polarization form in an uplink and outputting to a first E-plane 90-degree twist waveguide, the first E-plane 90-degree twist waveguide rotates a propagation direction of the base mode TE 10 mode by 90 degrees and then outputs to a vanished-mode ridge waveguide band-pass filter, the vanished-mode ridge waveguide band-pass filter selects the base mode TE 10 mode in the uplink and outputs to a second E-plane 90-degree twist waveguide, the second E-plane 90-degree twist waveguide rotates a propagation direction of the base mode TE 10 mode by 90 degrees and then outputs to an orthogonal mode coupler, the orthogonal mode coupler is used for converting the base mode TE 10 mode into a base mode TE 11 mode and then outputting and converting the base mode TE 11 mode into TE 01 mode, and outputting the TE 01 mode to a stepped impedance filter, the stepped impedance filter selects TE 01 mode in a downlink, and outputting the TE 01 mode to a copper drum H-plane rectangular waveguide; the application has the advantages of simple structure, wide working frequency band and the ability to cover the whole Ku-band bandwidth.

The invention discloses an ultra-wideband 45-degree oblique polarization all-metal array antenna based on a self-power-division structure. An array antenna unit adopts a single-feed-point self-power-division structure to realize a unit-level synthetic oblique polarization characteristic and can realize flexible and adjustable two-dimensional array spacing in a 45-degree oblique polarization state. A feed structure of the array antenna unit comprises a feed coaxial structure, a self-power division structure and a reflection matching cavity, so that signals transmitted to a vertical polarization surface structure and a horizontal polarization surface structure of a radiation cavity are in a constant-amplitude in-phase state, 45-degree oblique polarization radiation can be realized even if the array spacing of the vertical polarization surface and the array spacing of the horizontal polarization surface are not equal, and the radiation efficiency is improved. The polarization angle of the array antenna is not limited by the arrangement grid design. The array antenna can realize the working frequency range coverage of 3-9 octaves.

The invention provides a dual-polarization weather radar time domain echo simulation method based on Doppler spectrum reconstruction, and the method comprises the steps: constructing a scanning region and a resolution volume grid, dividing a sub-resolution volume grid, and carrying out the interpolation of the sub-resolution volume grid through a trilinear interpolation method; micro-physical information and a scattering matrix of each phase-state particle are calculated, echo intensity contributions are superposed along a speed coordinate axis of a Doppler spectrum and then are sequenced, a horizontal polarization channel Doppler spectrum of each sub-resolution volume grid is obtained, and an antenna pattern is taken as a weight and is superposed, so that a horizontal polarization channel Doppler spectrum of a resolution volume grid is obtained; and obtaining the power spectrum density of the horizontal polarization channel through coordinate transformation, obtaining the IQ echo sequence of the horizontal polarization channel through inverse Fourier transformation, and obtaining the IQ echo sequence of the vertical polarization channel in combination with the differential reflectivity factor, the differential propagation phase shift and the co-polarization correlation coefficient. According to the invention, reliable simulation of time domain echoes in the weather process of any shape spectrum can be realized.

This invention discloses a single-polarization broadband signal anti-reflection power-generating glass, an etching method, and an installation method, relating to the fields of communication and photovoltaic power generation technology. The power-generating glass includes an ultra-clear glass substrate and a plurality of single-segment thin-film solar cells connected in series within a layer of the ultra-clear glass substrate. Each single-segment thin-film solar cell includes a positive electrode, a power-generating thin film layer, and a back electrode. The positive electrode, power-generating thin film layer, and back electrode are sequentially stacked and bonded along the thickness direction of the ultra-clear glass substrate, and each is etched with periodically arranged rectangular patterns. The long side of each rectangular pattern is horizontal, forming a frequency-selective surface for the penetration of vertically polarized electromagnetic signals. This invention, by etching rectangular patterns on the power-generating glass, achieves efficient transmission of signals in the target frequency band while ensuring power generation functionality, solving the problem of traditional power-generating glass blocking communication signals and improving the quality of broadband signal transmission.

A dynamic 3D light scattering particle size distribution measurement device includes a polarization splitter for generating an s laser beam with perpendicular polarization and a p laser beam with parallel polarization that travels parallel to and spaced apart from the s laser beam. A lens is used to focus the s laser beam and the p laser beam onto a common focus area inside a sample holder holding a sample whose particle size is to be measured. An s light intensity detector measures a time-resolved s light intensity from s backscattered light from the focus area. An s-polarisation filter allows perpendicularly polarized light to pass, resulting in s measuring light, and includes a light detector for time-resolved intensity measurements of the s measuring light. A p light intensity detector measures a time-resolved p light intensity detects p backscattered light from the focus area, and includes a p polarization filter that allows parallel polarized light to pass. A light detector provides for time-resolved intensity measurement of the p measuring light, and an evaluation unit automatically calculates the particle size distribution from the time-resolved p light intensity and the time-resolved s light intensity.

The invention belongs to the technical field of radars, and relates to a complete polarization continuous wave rain detection radar system and method, and the system is fixedly installed on the ground and comprises a two-dimensional servo turntable, a transmitting and receiving antenna and a processing case. The transmitting antenna and the receiving antenna are respectively arranged on two sides of the two-dimensional servo turntable and carry out azimuth rotation and pitch angle adjustment along with the two-dimensional servo turntable. The transmitting antenna simultaneously transmits horizontal / vertical polarization signals, and the receiving antenna simultaneously receives dual-polarization echo signals. In the processing case, a transmitting assembly is connected with a transmitting antenna, and the excitation signal is radiated through the transmitting antenna after being amplified; the receiving component is connected with a receiving antenna and is used for performing low-noise amplification, down-conversion and the like on the echo signal; the frequency synthesizer board card generates a linear frequency modulation continuous wave excitation signal; the acquisition processing board card carries out AD sampling, pulse compression, clutter suppression, echo parameter estimation and other processing on the echo signal so as to realize raindrop characteristic analysis.

This invention discloses a polarization state modulation method based on regular polyhedral constellation points, comprising: selecting the order of polarization modulation and the corresponding regular polyhedral class; dividing the original binary bitstream into a conventional modulation bitstream and a polarization state modulation bitstream, wherein the conventional modulation bitstream is used to generate conventional modulation symbols, and the polarization state modulation bitstream is used for polarization state mapping; obtaining the corresponding polarization state description parameters using the polarization state modulation bitstream and the order of polarization modulation, determining the polarization weighting factor and performing polarization weighted fusion to obtain dual-channel high-dimensional modulation symbols to be transmitted; transmitting the symbols through an orthogonal dual-polarization antenna after preprocessing; performing RF front-end processing on the received horizontal and vertical polarization components of the RF signal at the receiving end to obtain the Jones vector representation of the baseband received signal; recovering the polarization state information by combining the Stokes parameters, and recovering the original binary bitstream by combining the conventional modulation and demodulation results.

This utility model relates to the field of drone jamming technology and discloses a handheld drone jamming device that enhances jamming effect. The handheld drone jamming device that enhances jamming effect includes a mounting plate, on which a first antenna array and a second antenna array are disposed. The first antenna array and the second antenna array are arranged crosswise. This utility model overcomes the shortcomings of existing vertically polarized antennas in drone countermeasures by adopting cross-polarized antennas, and significantly improves the countermeasures effect of jamming guns.