CN115241655A - Shared reflecting plane array antenna device of multiple fan-shaped wave beam surface structure - Google Patents

Shared reflecting plane array antenna device of multiple fan-shaped wave beam surface structure Download PDF

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Publication number
CN115241655A
CN115241655A CN202210652370.8A CN202210652370A CN115241655A CN 115241655 A CN115241655 A CN 115241655A CN 202210652370 A CN202210652370 A CN 202210652370A CN 115241655 A CN115241655 A CN 115241655A
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China
Prior art keywords
panel
reflecting
feed source
array
reflector
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Pending
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CN202210652370.8A
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Chinese (zh)
Inventor
刘成
施浒立
孔旭
李芳�
张�杰
汪陶胜
孙强
熊炜
孙永钦
宋志鹏
王小桐
王云飞
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Beijing Muxing Technology Co ltd
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Beijing Muxing Technology Co ltd
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Priority to CN202210652370.8A priority Critical patent/CN115241655A/en
Publication of CN115241655A publication Critical patent/CN115241655A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H01Q15/168—Mesh reflectors mounted on a non-collapsible frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H01Q19/175—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

The invention relates to a common reflecting surface array antenna device of a multiple fan-shaped wave beam surface structure, which comprises: the feed source array comprises a reflecting panel (1) and a feed source array (2) supported on the reflecting panel (1); the cross section of the reflecting panel (1) is bent along the transverse direction; the reflecting panel (1) is provided with a focal line, and the feed source array (2) is arranged at the position of the focal line of the reflecting panel (1); the feed source array (2) is arranged along the longitudinal extension of the reflecting panel (1) and is provided with a plurality of rows. The multiple fan-shaped large-field-angle beam surfaces with different inclination angles can be formed by the same reflection panel, so that the radio astronomy sky-patrol observation or space target monitoring can be carried out, the mechanical structure is simple, and the observation efficiency is high.

Description

Shared reflecting plane array antenna device of multiple fan-shaped wave beam surface structure
Technical Field
The invention relates to the field of radar astronomy, in particular to a shared reflecting plane array antenna device.
Background
By 12 months in 2018, the space targets of over 10cm which can be catalogued and run on rails exceed 18500 more; more than 50 ten thousand with a diameter less than 1 cm; the total mass is nearly 9000 tons. The space targets comprise spacecrafts, rocket debris, disintegration debris and the like, and some space orbit resource safety is seriously threatened. The method has important significance in accurately mastering space situation, maintaining national space rights and interests, protecting and utilizing space environment and safely developing space resources and strengthening space target detection and protection.
Mechanical tracking radar is the earliest ground-based radio detection technology, which controls the beam direction mechanically and can only monitor and measure when a target enters the range of an antenna beam. These mechanically tracked radars have limited multi-target observation capabilities due to their narrow beam and inability to electronically scan.
In order to further improve the space target monitoring and early warning capability, the aerospace big countries such as the United states and the law begin to develop own space monitoring systems. They are based on phased array radar technology, electronically control the beam direction, and can search and track multiple targets in different directions. In the united states Space Fence (Space Fence) system, a transmitting station constructs a thin plane beam surface (half-power beam width is 0.02 degree) to sky vertical transmission, and a receiving station generates a plurality of narrow beams and receives and measures target reflection signals passing through the beam surface. The french GRAVES system scans in sector units of azimuth 45 ° and elevation 20 ° with beams of horizontal 7.5 ° and vertical 20 ° based on a transmit array composed of 4 groups of 15 mx 6m antenna patches (scanning 6 units in 20s, achieving 180 ° azimuth coverage); meanwhile, a receiving array with the diameter of 60m and 100 antenna elements is used for generating a beam of 2 degrees multiplied by 2 degrees, and a target is searched and searched in each transmitting unit.
Therefore, in the scanning mode based on the phased array system, a plurality of narrow beams need to be generated simultaneously for residence or a few narrow beams need to be utilized for very quick scanning, so that the large-scale complete coverage can be realized. This requires consideration of many design factors and is not an optimal choice for wide area monitoring. Moreover, due to limitations on system size, complexity, and cost, space fences and GRAVES currently provide only one monitoring beam plane, and therefore detection and tracking efficiencies are not high. For example, a "space fence" requires at least 3 passes of the same target to determine the initial trajectory, with repeated monitoring typically lasting up to 5 days; GRAVES needs to perform coherent operation with the signal replica matched with the track by using the S-shaped doppler frequency curve generated by the received signal, so as to calculate the initial orbit of the spatial target.
The American space fence uses a parabolic cylinder antenna array, has a fixed focus in the parabolic direction, and can effectively collect reflected signals to form a fan-shaped thin-surface beam. However, the positive focusing property also enables only one beam surface to be obtained at the same time, and limits the target capturing success rate and the orbit determination efficiency. And to change the beam surface direction, the antenna array needs to be integrally rotated, so that the realization cost is high.
Disclosure of Invention
The invention aims to provide a common reflecting plane array antenna device of a multiple fan-shaped beam surface structure, which solves the problem of low tracking and scanning efficiency.
To achieve the above object, the present invention provides a common reflector array antenna device with a multiple fan-shaped beam surface structure, comprising: a reflective panel and a feed array supported on the reflective panel;
the cross section of the reflecting panel is bent along the transverse direction of the reflecting panel;
the reflecting panel is provided with a focal line, and the feed source array is arranged at the focal line position of the reflecting panel;
the feed source array is arranged along the longitudinal extension of the reflection panel and is provided with a plurality of rows.
According to an aspect of the present invention, the reflective panel has a spherical or cylindrical shape as a whole.
According to one aspect of the invention, the reflective panel has a longitudinal length greater than its transverse width.
According to an aspect of the present invention, the reflective panel includes: a plurality of reflection units;
the plurality of reflecting units are spliced with one another to form the reflecting panel;
the whole reflecting unit is a plate-shaped body in an arc surface shape, a spherical surface shape or a plane shape.
According to an aspect of the present invention, the reflecting unit is made of a smooth metal plate, or the reflecting unit has a mesh-like metal structure.
According to an aspect of the present invention, the reflective panel further comprises: an adjustment structure for connecting adjacent ones of the reflective elements;
the adjustment structure includes: the supporting seat is provided with a plurality of adjusting pieces which are arranged on the supporting seat and are used for connecting the reflecting unit;
the height of the connection between the adjusting piece and the reflection unit is adjustable.
According to an aspect of the invention, the adjusting member is connected to an edge or a corner of the reflecting unit.
According to an aspect of the invention, further comprising: a panel support structure for supporting the reflective panel;
the panel support structure includes: the upright posts are used for connecting the trusses of the adjacent upright posts;
the stand with adjust the structure and correspond the setting, just the upper end of stand with adjust the structure and be connected.
According to one aspect of the invention, the lower end of part of the uprights of the panel supporting structure is provided with a base connecting flange.
According to an aspect of the invention, further comprising: a feed array support for supporting the feed array;
the feed source array support is of a frame structure, the upper end of the feed source array support is connected with the feed source array, and the lower end of the feed source array support is connected with the reflecting panel.
According to one aspect of the invention, in the transverse direction of the reflecting panel, a plurality of rows of the feed source arrays are arranged at equal intervals along a plane, and the plane is parallel to a tangent plane at the middle position of the reflecting panel; or the feed source arrays are arranged along a curved surface at equal intervals, the radian of the curved surface is greater than or equal to that of the reflecting panel, and the tangent plane at the middle position of the curved surface is parallel to the tangent plane at the middle position of the reflecting panel.
According to one aspect of the invention, along the transverse direction of the reflecting panel, the interval between the adjacent feed source arrays satisfies the following conditions:
N*d<L*60％
wherein N is the number of rows of the feed source array, d is the interval between adjacent feed source arrays, and L is the transverse projection width of the reflecting panel.
According to one aspect of the invention, the maximum interval of the feed source array projection is 1/10 of the projection width of the reflecting panel along the transverse direction of the reflecting panel.
According to the scheme of the invention, a plurality of fan-shaped large-field-angle beam surfaces with different inclination angles can be formed by the same reflection panel, so that the method is used for carrying out radio astronomy observation or space target monitoring, and has the advantages of simple mechanical structure and high observation efficiency.
According to one aspect of the invention, a plurality of rows of longitudinally extending feed arrays are arranged at selected suitable locations on the focal line of the reflective panel, thereby forming a plurality of fan-shaped beam planes having different tilt angles. Therefore, a plurality of puncture points can be formed by one-time crossing of the space target above the device, so that the capturing and monitoring efficiency of the device is effectively improved, and the positioning and orbit determination capabilities of the target are further improved.
According to one scheme of the invention, the adjusting structure of the invention realizes the connection of adjacent reflecting units, can flexibly adjust the connection position of each reflecting unit, and realizes the change of the inclination angle position and the like between the adjacent reflecting units so as to realize the adjustment of the whole shape of the whole reflecting panel 1.
According to one scheme of the invention, the adjusting structure realizes that the adjusting structure is simultaneously connected with corners or edges of different reflecting units, fine adjustment of the connecting position can be realized by arranging the long round holes and the like at the connecting position, the requirement of high precision on the final molded surface of the whole reflecting panel in the installation process is realized, the reflecting surface of the reflecting panel belongs to a closed whole, and the reflecting panel has better mechanical stability and scanning capture precision.
According to one scheme of the invention, a plurality of fan-shaped beam surfaces with different inclination angles can be formed by selecting a proper position on a focal line of the reflecting panel and extending and distributing a plurality of parallel feed source arrays along the longitudinal direction of the antenna. The beam surface inclination angle can be flexibly adjusted by designing a sliding rail for moving the feed source along the direction of the spherical focusing focal line; the arrays are arranged in different directions of south, north, east and west in a matched mode, a grid type space monitoring screen can be further formed in a crossed mode, and the space target and the flying object can be monitored more closely and efficiently. Therefore, a plurality of puncture points can be formed by the target passing through once, so that the antenna capturing monitoring efficiency and the capturing success rate are improved, the positioning and orbit determination capabilities of the target are improved, and the false alarm rate in the target detection work are reduced. And the antenna has the advantages of simple mechanical structure, low cost, expandability and easy construction and arrangement.
Through reasonable site selection and design, multiple wave beams in all the territorial areas can be monitored and covered by a few array bases, and the construction efficiency and cost ratio is high.
Drawings
FIG. 1 schematically illustrates a front view of a common reflector array antenna apparatus according to one embodiment of the present invention;
fig. 2 schematically shows the structure of a reflection unit according to an embodiment of the present invention;
FIG. 3 schematically illustrates a connection structure pattern between adjacent reflection units according to an embodiment of the present invention;
FIG. 4 schematically illustrates a block diagram of a panel support structure according to an embodiment of the present invention;
FIG. 5 schematically shows a layout of an array of feeds according to an embodiment of the invention;
FIG. 6 schematically shows a layout of an array of feeds according to another embodiment of the invention;
figure 7 schematically illustrates a multiple fan beam face side view according to one embodiment of the invention;
figure 8 schematically shows a multiple fan beam plan view according to one embodiment of the invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can also be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
As shown in fig. 1, according to an embodiment of the present invention, a common reflector array antenna apparatus of a multiple fan-beam structure of the present invention includes: a reflective panel 1 and a feed array 2 supported on the reflective panel 1. In the present embodiment, the cross section of the reflection panel 1 is curved in the lateral direction. The section of the reflecting panel 1 is set to be curved, so that the reflecting panel 1 has a focal line, and the feed source array 2 can be arranged at the focal line position of the reflecting panel 1; in the present embodiment, the feed array 2 is arranged in a plurality of rows in the longitudinal direction of the reflective panel 1. Wherein, transverse rows of the feed array 2 are arranged in parallel with each other and are arranged along the longitudinal extension of the reflecting panel 1.
Through the arrangement, a plurality of rows of feed source arrays extending along the longitudinal direction are arranged at the proper positions selected from the focusing line of the reflecting panel, so that a plurality of fan-shaped beam surfaces with different inclination angles can be formed. Therefore, a plurality of puncture points can be formed by one-time crossing of the space target above the device, so that the capturing and monitoring efficiency of the device is effectively improved, and the positioning and orbit determination capabilities of the target are further improved.
According to one embodiment of the present invention, the entire reflection panel 1 has a spherical or cylindrical shape. In the present embodiment, the entire reflection panel 1 has a cylindrical shape, and as shown in fig. 1, the cross section of the reflection panel 1 in the lateral direction is circular arc-shaped, and the cross section of the reflection panel 1 in the longitudinal direction is linear, so that the entire reflection panel 1 has a curved cylindrical shape. It should be noted that the reflective panel 1 may also have a cylindrical structure with a parabolic cross section or an undulating cylindrical structure with a curved cross section and a concave or convex portion.
In another embodiment, the reflective panel 1 has a spherical surface shape as a whole, and has a circular-arc-shaped cross section in the lateral direction, and also has a circular-arc-shaped cross section in the longitudinal direction of the reflective panel 1, so that the reflective panel 1 as a whole has a curved spherical structure. It should be noted that the reflective panel 1 may also have a cylindrical structure with a parabolic cross section or an undulating cylindrical structure with a curved cross section and a concave or convex portion.
As shown in fig. 1, according to one embodiment of the present invention, the reflective panel 1 has a longitudinal length greater than a lateral width thereof.
Through the arrangement, the invention is ensured to have a larger monitoring area so as to capture the space target in time.
Referring to fig. 1 and 2, according to an embodiment of the present invention, a reflective panel 1 includes: a plurality of reflecting units 11. In the present embodiment, the plurality of reflection units 11 are joined to each other to form the reflection panel 1; wherein, the inclination angle of each reflection unit 11 is adjustable to realize the change and adjustment of the whole reflection panel shape. In the present embodiment, in order to realize the configuration of the shape of the reflection panel 1, the entire reflection unit 11 may be provided as a plate-like body having an arc surface shape, a spherical surface shape, or a planar shape. In the present embodiment, in practical applications, the structures of the reflection units 11 may be uniform, or the structures of the reflection units 11 may be different as necessary, as long as the overall shape structure of the reflection panel 1 can be realized.
According to an embodiment of the present invention, the reflecting unit 11 is made of a smooth metal plate, or the reflecting unit 11 has a mesh-like metal structure. In the present embodiment, the configuration of the reflecting means can be selected according to the wavelength of the present invention. Mesh-like reflective elements are typically used at wavelengths greater than about 10 cm. Meanwhile, the reflective units in a mesh shape have various configurations, for example, various patterns such as a knurled mesh, a welded mesh, a steel plate mesh, a punched mesh, and a twisted mesh may be used according to the manufacturing process of the wire mesh. Referring to fig. 2, in the present embodiment, the reflection unit 11 has a mesh-shaped metal structure, specifically, a mesh-shaped structure welded by stainless steel wires. In addition, in order to ensure the overall structural strength of the reflection unit 11, a frame a for supporting may be provided at one side of the net structure, and soft aluminum may be used for edge wrapping at the edge position, so that the overall structure thereof achieves the effects of light weight and durability. It should be noted that, when the reflecting unit 11 is of a mesh-like metal structure, the reflecting unit may be selected by combining the flatness, corrosion resistance, overall rigidity and strength, cost, and other factors of the mesh-like metal structure.
Referring to fig. 1, 2 and 3, according to an embodiment of the present invention, the reflective panel 1 further includes: an adjustment structure 12 for connecting adjacent reflection units 11. In the present embodiment, the adjustment structure 12 includes: a support base 121, and a plurality of adjusting members 122 disposed on the support base 121 and used for connecting the reflection unit 11. In this embodiment, the supporting base 121 may be supported by a flat plate-like body. A plurality of adjusting members 122 are arranged on the supporting base 121 in an array, and the adjusting members 122 are detachably connected to the supporting base 121. In the present embodiment, the number of the adjusting members 122 provided on the supporting base 121 is 4, but may be other number, such as two, according to the specific installation position. In the present embodiment, the coupling height of the adjusting member 122 to the reflecting unit 11 is adjustable. In the present embodiment, the adjusting member 122 is implemented by a combination of a screw and a plurality of nuts. Wherein, the screw and the nut are respectively connected with the support seat 121 and the reflection unit 11 under the matching. In the present embodiment, when the adjusting member 122 is coupled to the reflection unit 11, a coupling angle block is provided on the reflection unit 11, such that a screw of the adjusting member 122 passes through the angle block (a through hole such as a round hole or an oblong hole is provided on the angle block) and is fixed by clamping it by providing two nuts. When the height of the screw rod connected to the reflection unit 11 needs to be adjusted, the height of the screw rod connected to the support base 121 or the height of the nut on the screw rod connected to the reflection unit 11 can be adjusted to adjust the connection position between the adjustment member 122 and the reflection unit 11. And the connection mode of the screw of the adjusting member 122 and the supporting base 121 is the same as the connection mode of the reflection unit 11 and the screw. In addition, the screw rod can be directly screwed with the connecting angle block arranged on the reflection unit 11, so that the number of the used nuts can be reduced, and the connection mode of the screw rod and the supporting seat 121 is the same as that of the screw rod and the connecting angle block on the reflection unit 11. Of course, the adjusting member 122 can be realized by other methods, such as a spring device, an electric mechanism capable of being automatically controlled, a hydraulic mechanism, and the like.
In this embodiment, the inclination angle of the adjusting member 122 is adjustable, for example, by changing the inclination angle of the supporting seat 121 or changing the angle of the adjusting member 122 relative to the supporting seat 121.
With the above arrangement, the connection of the adjacent reflection units 11 is realized, and the connection position of each reflection unit can be flexibly adjusted, and the change of the inclination angle position and the like between the adjacent reflection units is realized, so as to realize the adjustment of the whole shape of the whole reflection panel 1.
In addition, the adjusting structure 12 of the present invention has a simple structure, is convenient to use, and has a long service life.
As shown in fig. 3, according to an embodiment of the present invention, the adjusting member 122 is connected to an edge or a corner of the reflecting unit 11.
Through the arrangement, the installation and adjustment of the reflection unit 11 can be flexibly realized, meanwhile, the use number of the adjustment structure can be reduced, and the overall structure is simplified.
Referring to fig. 1, 3 and 4, according to an embodiment of the present invention, the common reflective area array antenna apparatus of the multiple fan-shaped beam surface structure further includes: a panel support structure 3 for supporting the reflective panel 1. In the present embodiment, the panel support structure 3 includes: a plurality of columns 31 for connecting girders 32 of adjacent columns 31. In the present embodiment, the upright 31 is disposed corresponding to the adjustment structure 12, and the upper end of the upright 31 is connected to the adjustment structure 12. In the present embodiment, the length of the upright 31 can be adjusted according to the position where the upright is disposed, so as to adapt the structure of the whole reflective panel, thereby achieving the effect of stable support. In the present embodiment, the truss 32 is a sheet truss. In the present embodiment, the vertical columns are respectively arranged along the longitudinal direction and the transverse direction of the reflective panel to realize the correspondence to the adjustment structure. The girders 32 are connected by the vertical columns in the longitudinal direction and by the vertical columns in the edge positions and in the same row in the transverse direction, so that the connection of the whole supporting structure 3 is realized, and the stability of the whole structure is ensured.
In the present embodiment, the upper end of the upright 31 is fixedly connected to the adjusting structure 12, or is hinged, and the relative inclination angle of the adjusting structure 12 on different upright 31 can be changed for adapting to the reflective panel 11.
Through the arrangement, the adjusting structure is connected with corners or edges of different reflection units at the same time, fine adjustment of the connection position can be achieved through the mode that the long round holes and the like are arranged at the connection position, the requirement of high accuracy of the final molded surface of the whole reflection panel in the installation process is met, the reflection surface of the reflection panel belongs to a closed whole, and the mechanical stability and the scanning capture accuracy are better.
As shown in fig. 4, according to one embodiment of the present invention, the lower end of a part of the columns 31 of the panel support structure 3 is provided with a base connection flange c. In this embodiment, a base connection flange is provided at the lower end of the pillars (e.g., the first row of pillars in the longitudinal direction) provided at the edge of the reflective panel to fix the panel support structure 3.
As shown in fig. 1, according to an embodiment of the present invention, the method further includes: a feed array support 4 for supporting the feed array 2. In this embodiment, the feed array support 4 is a frame structure, and its upper end is connected to the feed array 2 and its lower end is connected to the reflective panel 1.
According to one embodiment of the present invention, in the transverse direction of the reflecting panel 1, the plurality of rows of feed source arrays 2 are arranged along a plane at equal intervals, and the plane is parallel to a tangent plane at the middle position of the reflecting panel 1 (see fig. 1 and 5); or, the multiple rows of feed source arrays 2 are arranged along a curved surface at equal intervals, the radian of the curved surface is greater than or equal to that of the reflecting panel 1, and the tangent plane at the middle position of the curved surface is parallel to the tangent plane at the middle position of the reflecting panel 1 (see fig. 6).
Through the arrangement, the signal reflected by the reflecting panel can be fully received by each row of the feed source array 2, and the improvement of the monitoring precision of the scheme is facilitated.
According to one embodiment of the present invention, the spacing between adjacent feed arrays 2 in the lateral direction of the reflective panel 1 satisfies:
N*d<L*60％
wherein, N is the row number of the feed source array 2, d is the interval between adjacent feed source arrays 2, and L is the transverse projection width of the reflection panel 1.
Through the arrangement, the interval of the adjacent feed source arrays 2 is arranged in the range, the feed source arrays 2 can be guaranteed to be located at the position of the focusing line of the reflecting panel 1, meanwhile, the interference and the influence between the adjacent feed source arrays 2 can be effectively avoided, and the detection precision and the sensitivity of the device are guaranteed to be favorable.
According to one embodiment of the invention, the maximum spacing of the projections of the feed array 2 in the lateral direction of the reflective panel 1 is 1/10 of the projection width of the reflective panel 1.
Through the arrangement, the maximum interval of the feed source arrays 2 is arranged in the range, so that the feed source arrays 2 can be effectively ensured to be positioned at the focusing line position of the reflecting panel 1, the wave beams emitted by each feed source array can be accurately and stably reflected by the reflecting panel, and the consistency of the reflected wave beams is ensured to be favorable.
Referring to fig. 7 and 8, in the present embodiment, a working mode of a longitudinal array is adopted, so that a plurality of beam planes can be generated simultaneously, and then a suitable position needs to be selected on a focal line of the reflection panel, and a plurality of rows of feed source arrays are arranged in an extending manner along a longitudinal (cylindrical) direction of the array. In this embodiment, the selection of the location point on the focal line of the reflective panel will determine the tilt angle of the beam surface. Considering that enough supporting rigidity needs to be provided for a plurality of feed sources, a frame structure segmented every several meters can be selected, each segment of the frame structure adopts a mode that a plurality of support rods are connected with a reflecting surface supporting structure, and inclined supports can be designed at two ends of a feed source array to ensure the rigidity and the strength of the feed source array. On the premise of ensuring the supporting rigidity, the number of the supporting rods is as small as possible, and the projection area is as small as possible, so that the shielding of the reflecting surface is reduced.
The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be those of ordinary skill in the art and are intended to be implemented in such conventional ways.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A common reflector array antenna assembly for a multiple fan beam surface configuration, comprising: the feed source array comprises a reflecting panel (1) and a feed source array (2) supported on the reflecting panel (1);
the cross section of the reflecting panel (1) is bent along the transverse direction;
the reflecting panel (1) is provided with a focal line, and the feed source array (2) is arranged at the position of the focal line of the reflecting panel (1);
the feed source array (2) is arranged along the longitudinal extension of the reflection panel (1) and is provided with a plurality of rows.
2. A common reflector array antenna according to claim 1, wherein the whole of the reflector panel (1) is spherical or cylindrical;
the longitudinal length of the reflecting panel (1) is larger than the transverse width thereof.
3. A common reflector array antenna device as in claim 2, wherein the reflector panel (1) comprises: a plurality of reflection units (11);
the plurality of reflecting units (11) are spliced with one another to form the reflecting panel (1);
the whole reflecting unit (11) is a plate-shaped body in an arc surface shape, a spherical surface shape or a plane shape.
4. A common reflector array antenna device as in claim 3, wherein said reflector element (11) is made of smooth metal plate or said reflector element (11) is made of mesh metal structure.
5. A common reflector array antenna device as in claim 4, wherein the reflector panel (1) further comprises: -an adjustment structure (12) for connecting adjacent said reflection units (11);
the adjustment structure (12) comprises: a support base (121), a plurality of adjusting pieces (122) arranged on the support base (121) and used for connecting the reflection unit (11);
the connecting height of the adjusting piece (122) and the reflecting unit (11) is adjustable;
the adjusting member (122) is connected to an edge or a corner of the reflecting unit (11).
6. The common reflector array antenna as in claim 5, further comprising: a panel support structure (3) for supporting the reflective panel (1)
The panel support structure (3) comprises: a plurality of uprights (31) for connecting trusses (32) of adjacent uprights (31);
the upright column (31) is arranged corresponding to the adjusting structure (12), and the upper end of the upright column (31) is connected with the adjusting structure (12);
the lower end of the upright column (31) of the panel supporting structure (3) is provided with a base connecting flange.
7. The common reflector array antenna as in claim 6, further comprising: a feed array support (4) for supporting the feed array (2);
the feed source array support (4) is of a frame structure, the upper end of the feed source array support is connected with the feed source array (2), and the lower end of the feed source array support is connected with the reflecting panel (1).
8. A common reflector array antenna device as in any one of claims 1 to 7, wherein, in the transverse direction of the reflector panel (1), a plurality of rows of said feeder arrays (2) are equally spaced along a plane parallel to a tangent plane at a middle position of the reflector panel (1); or the feed source arrays (2) are arranged along a curved surface at equal intervals, the radian of the curved surface is greater than or equal to that of the reflecting panel (1), and the tangent plane at the middle position of the curved surface is parallel to that of the reflecting panel (1).
9. A common reflector array antenna according to claim 8, wherein the spacing of adjacent feed arrays (2) in the transverse direction of the reflector panel (1) is such that:
N*d<L*60％
n is the line number of the feed source array (2), d is the interval between adjacent feed source arrays (2), and L is the transverse projection width of the reflecting panel (1).
10. A common reflector array antenna according to claim 9, characterized in that the maximum spacing of the feed array (2) projections in the transverse direction of the reflector panel (1) is 1/10 of the width of the reflector panel (1) projection.
CN202210652370.8A 2022-06-07 2022-06-07 Shared reflecting plane array antenna device of multiple fan-shaped wave beam surface structure Pending CN115241655A (en)

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CN202210652370.8A CN115241655A (en) 2022-06-07 2022-06-07 Shared reflecting plane array antenna device of multiple fan-shaped wave beam surface structure

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CN202210652370.8A CN115241655A (en) 2022-06-07 2022-06-07 Shared reflecting plane array antenna device of multiple fan-shaped wave beam surface structure

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CN115241655A true CN115241655A (en) 2022-10-25

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