40 results about "Parabolic antenna" patented technology

The invention relates to the technical field of satellite communication, and discloses a parabolic antenna pointing prediction and tracking method of an inter-satellite communication antenna servo system, which comprises the following steps of: acquiring current attitude measurement data of an antenna and a signal quality parameter of a communication link; calculating a link health degree index according to the signal quality parameter of the communication link; dynamically adjusting a process noise covariance matrix in an extended Kalman filtering model for state prediction based on the link health degree index; performing optimal state estimation on the pointing state of the antenna at the future moment by using an extended Kalman filtering model of the dynamically adjusted process noise covariance matrix; and generating and executing a servo control instruction according to the optimal state estimation. According to the method, the actual quality parameter of the communication link is quantified into the health degree index to dynamically adjust the process noise covariance of the prediction filtering model, and the robustness and tracking precision of the system under complex disturbance are improved.

A radio communication route enables communication from an originating ground station to a destination ground station via one of multiple randomly orbiting satellites with no active attitude control. The ground stations and satellites include multi-feed parabolic antennas for receiving radio signals from and transmitting radio signals in multiple directions. The satellites store an address of a destination ground station from which an initial information signal is transmitted and antenna information identifying the satellite antenna feed on which the initial information signal was received. Plural satellite antennas transmit linking information identifying the satellite to the originating ground station. Data transmissions received at the originating ground station that designate a particular destination are transmitted by the originating ground station using the antenna on which the linking information was received and the satellite retransmits the data transmission using the satellite antenna feed identified by the stored antenna information.

The invention discloses a photovoltaic power generation antenna with a microwave receiving function, and relates to the technical field of antennae, the photovoltaic power generation antenna comprises an antenna main body and an antenna mounting bracket, the antenna main body is of a paraboloid structure, and a photovoltaic power generation assembly and a microwave receiving assembly are arranged on the paraboloid of the antenna main body. The antenna perfectly inherits the advantages of high gain and strong directivity of a parabolic antenna, directly faces high-performance application scenes such as satellite signal receiving, creatively provides a layered coplanar structure in which a metal net covers a photovoltaic battery piece, the metal net serves as a reflecting surface of microwave signals, and the metal net serves as a reflecting surface of the microwave signals. Meanwhile, the net structure allows sunlight to be transmitted to the photovoltaic battery piece on the lower layer, physical integration is achieved, one-face double-work is further achieved, the same paraboloid is an efficient light energy collecting face and a high-performance microwave signal reflecting face, and the possible defects of a planar integrated antenna in gain are overcome.

The invention relates to the technical field of satellite signal receivers, in particular to a computer signal safety receiving device which comprises a rotating seat, a base plate, a rack, a parabolic antenna, a first hydraulic oil cylinder and a receiver, the base plate is horizontally installed at the top of the rotating seat, and the rack is installed at the right end of the upper surface of the base plate; the parabolic antenna is installed at the left end of the rack through a pin shaft, and the parabolic antenna can be driven by the rotating base to rotate so as to transmit satellite signals. The parabolic antenna is prevented from physical deformation fundamentally, the problems of electromagnetic wave reflection direction deviation, feed source receiving semaphore reduction and the like caused by antenna deformation are solved, mechanical loss caused by antenna deformation is reduced, the service life of the parabolic antenna is remarkably prolonged, the full-coverage bird repelling effect of day-time CD-ROM drive and day-night sound drive is achieved, and the bird repelling effect is improved. Energy is saved, the fault risk of complex electronic bird repelling components is avoided, and the bird repelling success rate is greatly increased through a double threatening mode.

The invention belongs to the technical field of communication devices, and particularly relates to a communication device for a communication vehicle, which comprises a mounting plate, a controller is fixedly connected to the upper side wall of the mounting plate, a mounting ring is fixedly connected to the upper side wall of the mounting plate, and a rotating table is rotatably connected to the outer wall of the mounting ring through a bearing. And the upper side wall of the mounting plate is fixedly connected with an adjusting motor. When the middle area of the parabolic antenna carried on the communication vehicle is locally sunken, the reflecting surface and accurate paraboloid form can be quickly recovered, gain attenuation, sidelobe level rise and noise coefficient rise caused by damage of a core area are avoided, and communication continuity and stability of scenes such as emergency communication and on-site command are guaranteed; and the service life of the antenna is prolonged, the equipment utilization rate is increased, repair can be completed without parking and dismounting, and the task reliability and the operation and maintenance efficiency of the communication vehicle in a complex environment are greatly improved.

The invention discloses a structure and a preparation method of a self-dimensional pure flexible fabric parabolic antenna, and belongs to the technical field of spherical inflatable antennas. The structure comprises a flexible fabric, a conductive silica gel layer and a plurality of silica gel ribs, criss-cross gradient thickness silica gel ribs are arranged on the back of the flexible fabric, non-uniform tension is induced during inflation expansion through the hyperelasticity and strain hardening effect of silica gel, the spherical surface of the flexible fabric is forced to spontaneously converge to a target paraboloid equation, and the outer surface of the flexible fabric is covered with a conductive silica gel layer. The method comprises the following steps: S1, laminating the flexible fabric and the conductive silica gel layer by adopting a vacuum laminating process; s2, manufacturing silica gel ribs on the non-reflecting surface of the flexible fabric; and S3, manufacturing silica gel ribs on the reflecting surface of the flexible fabric. According to the invention, the flexible silica gel is used as a reinforcing strip to realize the structural form of the self-dimensional effect of the antenna. The defect that deformation depends on single pneumatic control is overcome, folding resistance and high and low temperature resistance are achieved, and meanwhile good conductivity is achieved.

The utility model provides a feed source assembly and a parabolic antenna, and the feed source assembly comprises a housing which is provided with an accommodation cavity; the reflecting plate is arranged on the shell and is accommodated in the accommodating cavity; the vibrator is arranged on the reflecting plate and is accommodated in the accommodating cavity; the supporting tube is arranged on the shell, the supporting tube and the vibrator are distributed at intervals, the supporting tube is provided with a wire passing channel communicated with the containing cavity, and the wire passing channel is used for a coaxial cable to penetrate through so that the two ends of the coaxial cable can be connected with the vibrator and the signal source respectively; the connecting disc is arranged at one end, far away from the shell, of the supporting pipe, and the connecting disc is used for being connected with a supporting frame of the parabolic antenna; and the coaxial cable penetrates through the wire passing channel and is connected with the vibrator, and the coaxial cable is used for being connected with a signal source. Signals of the feed source assembly are transmitted through a coaxial cable instead of a circular waveguide, so that the diameter of the supporting tube is smaller than that of the circular waveguide. Moreover, the diameter of the supporting tube is far smaller than the diameter of a circular waveguide which has the same frequency and is used for transmitting microwave signals, so that the size of the feed source assembly is greatly reduced, the loss of electrical performance can be reduced, and the weight of the parabolic antenna is reduced.

The utility model provides an antenna device. The antenna device comprises a phase array antenna and a waveform adjusting accessory. The phased array antenna transmits a radio frequency signal. The waveform adjustment accessory is configured to reflect or refract a radio frequency signal to form a beam. The antenna device provided by the utility model can be configured into a parabolic antenna or a lens antenna with a beam forming function.

A parabolic antenna made up of solar cell element panels in a honeycomb mesh (regular hexagonal lattice) pattern

This invention relates to a method for manufacturing a high-precision, low-stress machining support device for a parabolic antenna reflector, belonging to the field of carbon fiber composite material machining. The method involves manufacturing a machining support; the machining support is a right-angled triangular frame structure; the machining support includes a horizontal plate, a vertical plate, and diagonal ribs; mounting through holes are made in the vertical plate; four positioning connection holes and three countersunk pin holes are provided around the mounting through holes on the vertical plate surface; a machining ring is manufactured; threaded holes are provided circumferentially on the machining ring; the machining ring is installed on the vertical plate of the machining support; the reflector body is overlapped onto the machining ring and fixedly connected. This invention solves the problem of high-precision, low-stress machining of parabolic antenna reflectors, and the device can be used for high-precision, low-stress machining of parabolic antenna reflectors.

This antenna device is provided with a first array antenna provided with a plurality of antenna elements, a first horn antenna for performing at least one of transmission to and reception from the first array antenna, a second horn antenna being a primary radiator, a transfer path for transferring a signal between the first horn antenna and the second horn antenna, and an adjustment mechanism for adjusting directivity of at least one of an output signal from the second horn antenna and an input signal to the second horn antenna. The adjustment mechanism is at least one of a parabolic antenna and a lens.

The application relates to an antenna tracking method, device, system, storage medium and computer program product. The method comprises the following steps: acquiring a target beam width corresponding to a multi-satellite system, the radiation range of the target beam width being capable of covering the multi-satellite system, and the multi-satellite system comprising a plurality of satellites; determining defocusing information corresponding to a feed according to the target beam width and the position of the feed at the current moment, the defocusing information comprising position information of the position of the feed deviating from the focal position of a parabolic antenna; and moving the feed based on the defocusing information, so that the width of an antenna beam radiated by the parabolic antenna matches the target beam width. The method can realize stable tracking and communication of the multi-satellite system.

The utility model discloses a kind of bipolarity radiating antennas, including antenna mast and parabolic antenna being set on antenna mast, including the assembly component being set between antenna mast and parabolic antenna, assembly component includes connecting frame, right-angle frame, fixed part and arc piece;Connecting frame and right-angle frame are set between antenna mast and parabolic antenna, for assembling and fixing to parabolic antenna, fixed part and arc piece are clamped in the outer wall of antenna mast, the utility model is installed in the top side of antenna mast by connecting frame and right-angle frame on assembly component, then fixed part and arc piece clamped installation in the outer wall of antenna mast, twice stable installation can be carried out to parabolic antenna;While adjustable fixed part and arc piece, according to the size of different antenna mast, flexible matching corresponding radian accessory, to increase the contact area when clamping and fixing, further strengthen the stable effect after installation.

We generally describe an antenna, in particular a parabolic antenna, comprising: a primary reflector, in particular a parabolic dish, a feed antenna and / or a secondary reflector for transmitting and / or reflecting an electromagnetic wave towards the primary reflector and / or receiving a said electromagnetic wave reflected from the primary reflector, a feed coupled to the feed antenna and / or secondary reflector, wherein the feed antenna and / or secondary reflector is coupleable, via the feed, to a radio-frequency transmission and / or reception device, and an actuator unit coupled to one or more of the feed antenna, the secondary reflector and the feed, wherein the actuator unit is configured to move the feed antenna and / or the secondary reflector, by exerting a mechanical force on the feed antenna and / or the secondary reflector and / or the feed, relative to the primary reflector.

Corrective meta surface lens is used to reduce the illumination and spill-over losses and improve the overall efficiency of a parabolic antenna when is horn-mounted, and / or top-mounted, and / or deposited directly on the frontal reflector surface of the parabolic antenna. For the horn-mounted model, a meta surface lens is placed in front of or in the aperture of the feed horn to reduce side lobe level, which results in lower parabolic antenna spill-over losses and overall efficiency improvement by more than 40% (1.5 dB). For the top-mounted model, the meta surface lens is mounted on top of (or above) the parabolic reflector, which results in reduction in illumination losses, and greater than 70% (2.5 dB) efficiency. The meta surface lens has a wideband response, is lightweight and has a lattice structure which makes it a great candidate for withstanding wind forces.

The invention relates to the technical field of communication equipment, and provides a high-precision feed source height adjusting device based on thread rotation adjustment, which comprises a parabolic antenna, a feed source arranged in the middle of the parabolic antenna and a mounting mechanism for mounting the feed source on the parabolic antenna, the mounting mechanism comprises a mounting base and a supporting assembly connected to the mounting base and the parabolic antenna, a mounting screw protrudes from the lower surface of the feed source, a first threaded hole for threaded connection of the mounting screw is formed in the upper surface of the mounting base, and the length of the first threaded hole is larger than or equal to that of the mounting screw; and a limiting mechanism for limiting the rotation of the feed source is arranged on the mounting base. The feed source is in threaded connection with the first threaded hole of the mounting base through the mounting screw, fine adjustment of the height of the feed source is achieved, the height adjustment precision of the feed source is guaranteed, the problems that an original design scheme excessively depends on the thickness of a gasket, and the adjustment precision is insufficient are solved, and micron-level height adjustment can be achieved.

The invention relates to an antenna control method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring satellite data at the current moment, determining target attitude data of the parabolic antenna according to the satellite data, determining an azimuth axis angle, a pitch axis angle and a polarization axis angle of the parabolic antenna according to initial attitude data and the target attitude data of the parabolic antenna, and determining a rotation matrix of the parabolic antenna according to the azimuth axis angle, the pitch axis angle and the polarization axis angle. By adopting the method, the communication stability of the parabolic antenna can be improved.

The invention discloses a satellite-borne maximum paraboloid assembled antenna, which comprises a peripheral module unit, a central module unit, a feed source array and a foldable truss module unit, the plurality of peripheral module units are spliced to form the modular reflector by taking the central module unit as a center; a plurality of foldable truss module units are spliced in sequence to form an extension arm truss; one end of the extension arm truss is connected with the satellite, and the other end is connected with the feed source array. According to the satellite-borne maximum paraboloid assembled antenna, the contradiction among the large size, high precision and carrying limitation of a maximum-caliber paraboloid antenna is solved, the modular reflector and the folding and unfolding type feed source array extension arm truss which can be assembled in an on-orbit mode are adopted, and on-orbit construction of a hectometer-scale caliber paraboloid antenna is achieved; ground manufacturing and carrying bottlenecks are broken through, an antenna configuration scheme which can be implemented on orbit is formed, and engineering feasibility support is provided for on-orbit construction of the large-aperture paraboloid space antenna.

The invention provides a spacecraft rope net structure system based on spinning stability and a design optimization method, and relates to the technical field of spacecraft large flexible space deployable structures. According to the method, a spacecraft ultra-large space deployable parabolic antenna serves as a research object, dynamic stable balance is achieved through centrifugal force generated by spinning of an antenna structure system, parametric modeling is achieved for design parameters of the antenna structure system, then optimization design is conducted on the structure design parameters subjected to parameterization processing, and the design precision of the antenna structure system is improved. And obtaining key factors influencing reliable unfolding and spinning stable balance of the antenna. Based on the obtained physical quantity characteristics of the key factors, the probability distribution criterion of the key factors is determined, random targeting analysis is carried out, the weight of the key factors on the dynamic stability influence is evaluated, and the optimization design problem of the spinning antenna structure system and the design problem that ground effective test verification cannot be carried out are solved.

The application discloses an antenna radar module with a rotary support support, which comprises a double-cylinder cavity shell, a protection plate fixedly installed at an opening position of the top end of the double-cylinder cavity shell, a rotary table rotatably installed at the top end of the protection plate and left and right sides, and a parabolic antenna radar arranged above the rotary table. An elevation movable support is arranged between the bottom end of the parabolic antenna radar and the top end of the rotary table. A rotary driver for driving the two rotary tables to synchronously rotate is installed in the double-cylinder cavity shell. The rotary table bottom end rotatably installed with a rotary gear shaft is engaged with a fixed gear ring, the rotary gear shaft is kept in a rotating state, the rotating speed is proportional to the azimuth rotating speed of the parabolic antenna radar, power is transmitted to the connecting rod pitch oscillation structure through the rotary gear shaft, the elevation movable support and the parabolic antenna radar are regularly adjusted in the pitch angle, and flexible and coordinated rotation is kept in the azimuth and the pitch.

The application discloses a large-sized vehicle-mounted parabolic antenna capable of being repeatedly folded and unfolded, and particularly relates to the field of parabolic antennas. The large-sized vehicle-mounted parabolic antenna comprises a vehicle-mounted base, a yaw base, a pitch support, a parabolic antenna large base, antenna petals and an antenna back frame. The vehicle-mounted base is arranged on a special vehicle, the yaw base is arranged on the vehicle-mounted base, the pitch support is rotationally connected to the yaw base, the parabolic antenna large base is fixedly connected to the pitch support, an antenna feed source and a ring-shaped driving assembly located below the antenna feed source are arranged on the parabolic antenna large base, an embedding groove is formed in the parabolic antenna large base, a Hooke joint is rotationally connected to the embedding groove, the Hooke joint is connected with the antenna petals, the antenna petals are provided with hydraulic rods, and the hydraulic rods are connected between the ring-shaped driving assembly and the antenna petals. The application solves the problem that the parabolic antenna and the back frame cannot be quickly and flexibly assembled and disassembled, and the rotation folding and unfolding efficiency of the antenna petals is improved.

The invention relates to a manufacturing method of an expandable rotating parabolic antenna, belongs to the technical field of antenna manufacturing, and solves the technical problems of manufacturing and assembling complexity and manufacturing precision. The method comprises the following steps: S1, manufacturing a feed source device; s2, a cylindrical force bearing barrel is manufactured, the cylindrical force bearing barrel comprises a hollow barrel body and a supporting column fixed to the edge of the barrel body, and then the barrel body of the cylindrical force bearing barrel is arranged outside the feed source device in a sleeving mode; s3, manufacturing an auxiliary reflector, and mounting the auxiliary reflector on the support column of the cylindrical bearing barrel; s4, calculating the expansion precision of the main reflecting surface of the main reflector, which is in the shape of a rotating paraboloid; s5, manufacturing a plurality of expandable supporting structures of the main reflector, and mounting the expandable supporting structures on the cylindrical bearing barrel; and S6, manufacturing a main reflecting surface of the main reflector. Precision design and calculation are carried out before manufacturing of the main reflector, key data support can be provided for manufacturing of the reflecting surface and the supporting structure, the requirement that the reflecting surface strictly conforms to a theoretical model is met, and manufacturing errors are reduced.

The invention discloses a dual-mode parabolic antenna system for low-orbit satellite tracking, and belongs to the field of electronic information. The system configuration of two parabolic antennas, two satellite terminals and a dual-mode switching unit is adopted. When a low-orbit satellite works, the two parabolic antennas alternately track in a relay mode, and signals are transmitted to any satellite terminal through the dual-mode switching unit on the premise that reference is not interrupted, so that communication is not interrupted. When the two antennas need to work respectively, the two antennas transmit signals to the dual-mode switching unit, and the dual-mode switching unit distributes the signals to the two satellite terminals so that the two antennas can conduct communication and tasks at the same time.

The invention relates to a fed parabolic antenna (1) comprising: a feed (10) for emitting or receiving electromagnetic waves; a reflecting surface (11) whose generating surface is a paraboloid (20) arranged to reflect electromagnetic waves, characterized in that the feed (10) is arranged in an off-focus position relative to the focus point (P1) of the reflecting surface, such that the radiated level of the antenna is uniform over the field of view (40) of the antenna (1), the off-focus position being off-focused by a first distance (Dz) along a first axis (z) connecting the focus point (P1) and the center (C) of the reflecting surface (11) and by a second distance (Dx) along a second axis (x) orthogonal to the first axis (z), the second distance (Dx) being equal to at least 5% of the focal distance (F1) associated with the focus point (P1).

The utility model discloses a miniaturized vehicle-mounted parabolic antenna, which comprises a mounting seat, the mounting seat is fixedly mounted at the top of the tail end of a carrier, the tail end of the mounting seat is hinged with a connecting seat through a hinge seat, the top of the connecting seat is rotatably provided with a turntable, and the turntable is rotatably provided with a parabolic antenna body; according to the utility model, when the parabolic antenna body is not used, the first electric cylinder is started, and the connecting seat can be pushed to turn over relative to the mounting seat through the crank arm, so that the connecting seat and the parabolic antenna body are rotated to the rear of the carrier, the influence on the trafficability of the carrier is effectively reduced, and in the driving process of the carrier, the transmission of the parabolic antenna body is facilitated. By means of the structure, the parabolic antenna body can be prevented from being collided by foreign objects, after the carrier stops, the first electric cylinder is started to drive the connecting base to rotate to the horizontal state, the parabolic antenna body can be used, the connecting base is located above the top face of the carrier at the moment, interference cannot be caused to opening of a rear tail door of the carrier, and the use effect is good.

Computer assisted method for manufacturing a foldable paraboloid antenna, that comprises the following steps: - election of a two-dimensional radial Origami pattern with triangular cells and election of a paraboloid surface, - the two-dimensional radial Origami pattern with triangular cells is projected from the focus of the paraboloid surface on the paraboloid surface in order to print the Origami pattern on the paraboloid surface, obtaining triangles with curved sides, - obtention of a pattern with triangles with straight sides on the paraboloid surface by joining the vertices of the projected triangles with curved sides, - calculating the centroids of the triangles and scaling of the triangles with a homothetic operation from the focus, in order to reduce each triangle taking as a reference the corresponding centroid and to determine the spacing between triangles, obtaining a mesh with a plurality of segments and a plurality of triangular cells delimited by the segments of the mesh, - the triangular cells are filled with triangles of a reflective rigid material, - the mesh of the antenna is manufactured with a flexible material, such that the width of each segment is at least the sum of the thicknesses of the two adjacent rigid triangles, and - the cells on the periphery are manufactured with a rounded outer edge.

The invention discloses an antenna radar module with a rotary supporting bracket, which comprises a double-cylinder cavity type shell, a protection plate fixedly mounted at the opening position of the top end of the double-cylinder cavity type shell, rotary tables rotationally mounted on the left side and the right side of the top end of the protection plate, and parabolic antenna radars arranged above the rotary tables, an elevation movable support is arranged between the bottom end of the parabolic antenna radar and the top ends of the rotary tables, and a rotary driver used for driving the two rotary tables to rotate synchronously is installed in the double-cylinder cavity type shell. According to the invention, the rotation-following gear shaft rotatably mounted at the bottom end of the rotary table is engaged with the fixed gear ring, the rotation-following gear shaft is kept in a rotation state, and the rotation speed is in direct proportion to the azimuth rotation speed of the parabolic antenna radar, so that the rotation-following gear shaft transmits power to the connecting rod pitching rocking structure; and the elevation angle movable bracket and the parabolic antenna radar are enabled to regularly adjust the pitch angle, so that flexible and coordinated rotation is kept in two dimensions of azimuth and pitch.