CN109119741A - A kind of complete movable huge radio telescope - Google Patents
A kind of complete movable huge radio telescope Download PDFInfo
- Publication number
- CN109119741A CN109119741A CN201811145142.1A CN201811145142A CN109119741A CN 109119741 A CN109119741 A CN 109119741A CN 201811145142 A CN201811145142 A CN 201811145142A CN 109119741 A CN109119741 A CN 109119741A
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- Prior art keywords
- reflecting surface
- movable
- supporting
- base
- feed source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 239000007787 solid Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 108010066114 cabin-2 Proteins 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
-
- 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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Telescopes (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a kind of complete movable huge radio telescopes, comprising: removable reflecting surface and Cabin；Removable reflecting surface and Cabin are separate structure；Removable reflecting surface is fixed on reflecting surface support frame, is disposed with pitch rotation mechanism, supporting mechanism and rotating basis below reflecting surface support frame；Cabin is lifted on the top of removable reflecting surface by several groups support tower and supporting cables.The present invention is supported using rope and rope drives feed pattern, builds support tower on level land or high mountain, accurately controls the position of feed in real time by support tower and supporting cables；The present invention uses light reflection surface structure, and reflecting surface weight is greatly lowered, and realizes that 300m bore creates primary condition to break through 100m or so.The whole orientation that the present invention passes through translation base, rotating basis and pitch rotation mechanism co- controlling reflecting surface；The position of feed is controlled by feed supporting cables；Various aspects as above cooperate jointly, realize and are accurately directed to, improve observed efficiency, expand observation scope.
Description
Technical Field
The invention relates to the field of radio telescopes, in particular to a full-movable giant radio telescope.
Background
The capacity of the radio telescope for collecting weak radio signals is enhanced along with the increase of the caliber, the larger the caliber is, the higher the resolution is, and the darker and farther celestial bodies can be seen. However, the increased aperture presents a number of difficulties to overcome. First, the larger the aperture is, the heavier the primary mirror itself is, and the deformation caused by temperature and the deformation caused by its own weight also cause the degradation of the imaging quality, and the design is increasingly difficult. Secondly, the larger the caliber is, the more difficult the installation of the feed source receiver is. Third, the larger the caliber, the more difficult it is to manufacture and the higher the installation and operational requirements. Fourth, the cost of manufacturing telescopes is generally proportional to the square or cube of the objective aperture, and large aperture telescopes must be carefully demonstrated in terms of principle and technical solutions, and implemented with the solution that determines the most appropriate cost-effectiveness.
Therefore, the international maximum caliber of the fully movable radio telescope is the U.S. GBT telescope, and the caliber is 110X100 m. China Xinjiang, under construction, QTT/START telescope with aperture of 110 m. At present, one view of the international astronomical community is that about 100m reaches the limit of the fully movable radio telescope, and other forms are required for increasing the caliber continuously, such as American Arecibo305m, effective caliber 250m and Chinese FAST500m, and effective caliber 300 m.
The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a full-movable giant radio telescope to solve the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fully movable giant radio telescope comprising: the movable reflecting surface and the feed source cabin are arranged; the movable reflecting surface and the feed source cabin are of split structures; wherein,
the movable reflecting surface is fixed on a reflecting surface supporting frame, and a pitching rotating mechanism, a supporting mechanism and a rotating base are sequentially arranged below the reflecting surface supporting frame;
the feed source cabin is hoisted above the movable reflecting surface through a plurality of groups of supporting towers and supporting cables; the supporting towers are uniformly distributed on the ground or the base body in the circumferential direction of the movable reflecting surface; one end of the supporting cable is fixed on the feed source cabin, the other end of the supporting cable is connected with a hoisting mechanism fixed on the ground or the base body, and the supporting cable is reversed through a pulley at the top of the supporting tower.
As a further technical scheme, a translation base is arranged at the bottom of the rotating base; the movable reflective surface is translated laterally and longitudinally by the translation base.
As a further technical scheme, two transverse and longitudinal fixed guide rails are arranged below the translation base; two guide grooves matched with the guide rails are arranged on the periphery of the bottom of the translation base in the transverse direction and the longitudinal direction in a matching mode; the section of the guide rail is I-shaped; and guide wheels or driving wheels are arranged on two sides in the guide groove through wheel shafts.
As a further technical scheme, a plurality of hoisting mechanisms are arranged on the upper surface of the rotating base; the hoisting mechanism is connected with a control cable, and the other end of the control cable is connected with the reflecting surface support frame.
As a further technical scheme, the movable reflecting surface and the reflecting surface supporting frame are both made of high-strength aluminum alloy, CC composite materials or carbon fiber materials.
As a further technical scheme, the movable reflecting surface is formed by splicing a plurality of reflecting surface units, and the reflecting surface units are solid paraboloid panels or paraboloid panels with holes.
As a further technical scheme, a balance weight device is arranged in cooperation with the pitching rotation mechanism.
By adopting the technical scheme, the invention has the following beneficial effects:
the cable support and cable drive feed source type is adopted, a support tower is built on flat ground or high mountain, and the position of the feed source is accurately controlled in real time through the support tower and the support cable; the invention adopts a light reflecting surface structure, greatly reduces the weight of the reflecting surface and creates a basic condition for breaking through about 100m and realizing the caliber of 300 m. The whole direction of the reflecting surface is controlled by the translation base, the rotating base and the pitching rotating mechanism together; controlling the position of a feed source through a feed source supporting cable; the above aspects are matched together, so that the accurate pointing is realized, the observation efficiency is improved, and the observation range is enlarged.
Drawings
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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an overall structure of a fully movable giant radio telescope according to an embodiment of the present invention;
FIG. 2 is a partial schematic structural diagram of a fully movable giant radio telescope according to an embodiment of the present invention;
FIG. 3 is a schematic bottom view of a translation stage according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a translation stage according to an embodiment of the present invention;
FIG. 5 is a schematic bottom view of a spin base according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a state of fitting between a guide rail and a guide groove according to an embodiment of the present invention;
icon: 1-a movable reflective surface; 2-a feed source cabin; 3-a reflecting surface support frame; 4-a pitch rotation mechanism; 5-a support mechanism; 6-rotating the base; 7-a support tower; 8-a supporting cable; 9-ground or substrate; 10-a translation base; 11-a guide groove; 12-a guide rail; 13-a wheel axle; 14-guide or drive wheels; 15-a hoisting mechanism; 16-a control cable; 17-a balancing weight arrangement; 18-a ring guide; 19-annular guide groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1 to 4, the present embodiment provides a fully movable giant radio telescope, including: the device comprises a movable reflecting surface 1 and a feed source cabin 2; the movable reflecting surface 1 and the feed source cabin 2 are of split structures; wherein,
the movable reflecting surface 1 is fixed on a reflecting surface support frame 3, and a pitching rotation mechanism 4, a support mechanism 5 and a rotating base 6 are sequentially arranged below the reflecting surface support frame 3;
the feed source cabin 2 is hoisted above the movable reflecting surface 1 through a plurality of groups of supporting towers 7 and supporting cables 8; the supporting towers 7 are uniformly distributed on the ground or the base body 9 at the periphery of the movable reflecting surface 1; one end of the supporting cable 8 is fixed on the feed source cabin 2, the other end of the supporting cable is connected with a hoisting mechanism fixed on the ground or the base body, and the supporting cable 8 is reversed through a pulley at the top of the supporting tower; the structure is similar to the reversing structure of the feed cabin supporting cable in FAST engineering.
The number of the support towers 7 and the support cables 8 can be set according to the requirement, preferably 3, and the structures of the three groups of support towers 7 and the support cables 8 can be set to be in the form of approximately equilateral triangles, so that the stability of the support towers 7 and the support cables 8 for the feed source cabin 2 can be improved as much as possible.
According to the invention, the support tower is built on a flat ground or a high mountain, the position of the feed source is accurately controlled in real time through the support tower and the support cable, and specifically, the support cable 8 is driven to contract through a hoisting mechanism on the ground or a base body, so that the position of the feed source is controlled. The self-centering tower can be built on the mountain, so that the construction cost of the tower can be saved, but the observation range is easily influenced by the mountain. The tower can also be built on flat ground, so that the zenith angle can be enlarged.
In the present embodiment, as a further technical solution, a translation base 10 is disposed at the bottom of the rotation base 6; the movable reflecting surface 1 is translated laterally and longitudinally by said translating base 10. Two transverse and longitudinal fixed guide rails 12 are arranged below the translation base 10; two guide grooves 11 matched with the guide rails are arranged on the periphery of the bottom of the translation base in the transverse direction and the longitudinal direction in a matching mode with the fixed guide rails, and the guide grooves 11 are of a sectional type structure in the embodiment; the section of the guide rail 12 is in an I shape; guide wheels or drive wheels 14 are arranged on both sides of the interior of the guide channel 11 via wheel axles 13.
The driving wheel in this application can drive the telescope main part at ground along the north and south (meridian or warp direction) of guide rail or east and west (weft direction) translation through the drive of wheel rail motor. The translation base layer and the guide rail adopt a roller holding structure similar to the existing fully movable telescope base, and the potential overturning moment is overcome while the telescope main body is supported. The accurate position of the translation base layer is obtained at any time through an automatic position detection system. Above the translation base layer is an annular guide rail 18, and the bottom of the rotating base 6 is provided with an annular guide groove 19 matched with the annular guide rail 18, and the assembly mode of the annular guide groove and the annular guide groove is consistent with that of the guide rail 12 and the guide groove 11. The wheel track motor drives the telescope main body to rotate on the guide rail. The structure also adopts a roller holding type structure similar to the existing fully movable telescope base, and overcomes possible overturning moment while supporting the telescope main body. The accurate position of the rotating base layer is obtained at any time through an automatic position detection system. A pitching rotation mechanism is arranged above the rotating base and drives the telescope reflecting surface to pitch and rotate through a gear structure or a rotating shaft mechanism. And the accurate position of the pitching rotation layer is obtained at any time through an automatic position detection system.
Compared with the existing full-movable radio telescope, the telescope has the advantages that the translation base 10 is arranged at the bottom of the rotating base 6, the telescope can translate transversely and longitudinally through the translation base 10, a sheltering environment exists for some movable reflecting surfaces 1, and the movable reflecting surfaces 1 can be sheltered from through transverse and longitudinal translation.
In this embodiment, as a further technical solution, a plurality of hoisting mechanisms 15 are disposed on the upper surface of the rotating base 6; the hoisting mechanism 15 is connected with a control cable 16, and the other end of the control cable 16 is connected with the reflecting surface support frame 3.
The invention can accurately control the integral attitude of the reflecting surface by controlling the accurate extension and retraction of the control cable 16. The posture control mode is a supplement of the traditional gear or rotating shaft mechanism for controlling the posture of the reflecting surface, and can be used jointly, the hoisting mechanism 15 and the control cable 16 not only can play a role in assisting in posture adjustment, but also can enhance the stability of the giant reflecting surface under the external disturbance conditions such as wind load and the like by controlling the posture of the reflecting surface through the inhaul cable.
In this embodiment, as a further technical solution, the movable reflecting surface 1 and the reflecting surface supporting frame 3 are made of high-strength aluminum alloy, CC composite material or carbon fiber material. The invention adopts the light reflecting surface structure, greatly reduces the weight of the reflecting surface and creates a basic condition for breaking through about 100m and realizing the caliber of 300 m.
In this embodiment, as a further technical solution, the movable reflective surface 1 is formed by splicing a plurality of reflective surface units, and the reflective surface units are solid parabolic panels. By adopting the solid or perforated paraboloid panel with smaller size, the invention can improve the node precision of the reflecting surface unit to 0.5mm, the surface shape precision of the reflecting unit to 0.1mm and the telescope observation frequency to more than 30GHz and even to 150GHz while reducing the processing and manufacturing difficulty.
In the present embodiment, as a further technical solution, a balance weight device 17 is provided in cooperation with the pitching rotation mechanism 4. By providing the balance weight device 17, the driving torque of the pitch rotating mechanism 4 can be effectively reduced, and the burden of the pitch rotating mechanism 4 can be reduced.
In conclusion, the whole direction of the reflecting surface is controlled by the translation base, the rotating base and the pitching rotating mechanism together; controlling the position of a feed source through a feed source supporting cable; the above aspects are matched together, so that the accurate pointing is realized, the observation efficiency is improved, and the observation range is enlarged. Theoretically, the observation range of the present telescope system scheme may range from-90 ° to +90 ° if not affected by mountain terrain (in the case when the feed support tower is built on top of a mountain to save tower construction costs); the aperture of the telescope can reach about 300 m.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Thank you: thanks to the subsidies of the present application by national science fund item 11773041.
Claims (7)
1. A fully movable giant radio telescope comprising: the movable reflecting surface and the feed source cabin are arranged; the feed source cabin is characterized in that the movable reflecting surface and the feed source cabin are of split structures; wherein,
the movable reflecting surface is fixed on a reflecting surface supporting frame, and a pitching rotating mechanism, a supporting mechanism and a rotating base are sequentially arranged below the reflecting surface supporting frame;
the feed source cabin is hoisted above the movable reflecting surface through a plurality of groups of supporting towers and supporting cables; the supporting towers are uniformly distributed on the ground or the base body in the circumferential direction of the movable reflecting surface; one end of the supporting cable is fixed on the feed source cabin, the other end of the supporting cable is connected with a hoisting mechanism fixed on the ground or the base body, and the supporting cable realizes direction conversion through a pulley at the top of the supporting tower.
2. The fully movable giant radio telescope of claim 1, wherein a translation base is disposed at the bottom of the rotating base; the movable reflective surface is translated laterally and longitudinally by the translation base.
3. The fully movable giant radio telescope of claim 2, wherein two fixed guide rails are disposed below the translation base; two guide grooves matched with the guide rails are arranged on the periphery of the bottom of the translation base in the transverse direction and the longitudinal direction in a matching mode; the section of the guide rail is I-shaped; and guide wheels or driving wheels are arranged on two sides in the guide groove through wheel shafts.
4. The fully movable giant radio telescope of claim 1, wherein the upper surface of the rotating base is provided with a plurality of hoisting mechanisms; the hoisting mechanism is connected with a control cable, and the other end of the control cable is connected with the reflecting surface support frame.
5. The fully movable giant radio telescope of claim 1, wherein the movable reflecting surface and the reflecting surface support frame are made of high strength aluminum alloy, CC composite material or carbon fiber material.
6. The fully movable giant telescope of claim 1, wherein the movable reflective surface is formed by splicing a plurality of reflective surface units, and the reflective surface units are solid or perforated paraboloidal panels.
7. The fully movable giant radio telescope of claim 1, wherein a counterweight device is provided in association with the tilting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145142.1A CN109119741A (en) | 2018-09-29 | 2018-09-29 | A kind of complete movable huge radio telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145142.1A CN109119741A (en) | 2018-09-29 | 2018-09-29 | A kind of complete movable huge radio telescope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109119741A true CN109119741A (en) | 2019-01-01 |
Family
ID=64857353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811145142.1A Pending CN109119741A (en) | 2018-09-29 | 2018-09-29 | A kind of complete movable huge radio telescope |
Country Status (1)
| Country | Link |
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| CN (1) | CN109119741A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350067A (en) * | 2020-09-29 | 2021-02-09 | 北京理工大学 | Ultra-large reflective array wide-angle scanning antenna based on frequency stepping |
| CN112350077A (en) * | 2020-09-29 | 2021-02-09 | 北京理工大学 | Ultra-large-diameter planar reflection array antenna |
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| CN101060191A (en) * | 2007-05-14 | 2007-10-24 | 西安电子科技大学 | A technology for realizing the flexible antenna feed large zenith angle |
| CN101662075A (en) * | 2009-09-09 | 2010-03-03 | 李泉洞 | Radio telescope feed cabin positioning system, positioning method and radio telescope |
| DE102011108377A1 (en) * | 2011-07-22 | 2013-01-24 | Vertex Antennentechnik Gmbh | Radio telescope system has azimuth structure that is arranged to perform relative rotation of upper section with respect to lower section about azimuth axis |
| CN104682011A (en) * | 2015-03-08 | 2015-06-03 | 西安电子科技大学 | Ground reflector in cable network structure |
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| CN107516768A (en) * | 2017-07-24 | 2017-12-26 | 西北工业大学 | A kind of Moving water surface floating radio telescope based on water flowing |
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- 2018-09-29 CN CN201811145142.1A patent/CN109119741A/en active Pending
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| CN101060191A (en) * | 2007-05-14 | 2007-10-24 | 西安电子科技大学 | A technology for realizing the flexible antenna feed large zenith angle |
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| DE102011108377A1 (en) * | 2011-07-22 | 2013-01-24 | Vertex Antennentechnik Gmbh | Radio telescope system has azimuth structure that is arranged to perform relative rotation of upper section with respect to lower section about azimuth axis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350067A (en) * | 2020-09-29 | 2021-02-09 | 北京理工大学 | Ultra-large reflective array wide-angle scanning antenna based on frequency stepping |
| CN112350077A (en) * | 2020-09-29 | 2021-02-09 | 北京理工大学 | Ultra-large-diameter planar reflection array antenna |
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