CN201038322Y - Spatial radio telescope receiving antenna - Google Patents
Spatial radio telescope receiving antenna Download PDFInfo
- Publication number
- CN201038322Y CN201038322Y CNU2007200689170U CN200720068917U CN201038322Y CN 201038322 Y CN201038322 Y CN 201038322Y CN U2007200689170 U CNU2007200689170 U CN U2007200689170U CN 200720068917 U CN200720068917 U CN 200720068917U CN 201038322 Y CN201038322 Y CN 201038322Y
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- Prior art keywords
- inflation
- radio telescope
- principal arm
- antenna
- space
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Abstract
The utility model relates to a receiving antenna of space radio telescope which comprises a principal reflecting surface used for receiving electromagnetic wave, an assistant reflecting surface arranged above the principal reflecting surface and used for receiving the electromagnetic wave reflected from the principal reflecting surface, a focusing surface arranged below the assistant reflecting surface and used for receiving the electromagnetic wave reflected from the assistant reflecting surface, and an assistant reflecting registration wire used for fixing the assistant reflecting surface; and the e utility model is characterized in that the receiving antenna of space radio telescope also comprises a inflation principal arm which is used for supporting the whole antenna structure, a top inflation ring which is connected with the top of the inflation principal arm and used for fixing the assistant reflecting registration wire, a secondary inflation arm ring which is connected with the inflation principal arm and used for fixing the principal reflecting surface, and a suspension cable which is arranged between the inflation principal arm and the secondary inflation arm ring and used for supporting and adjusting the principal reflecting surface. The volume of the antenna is capable of being folded and retracted to minimum, having light weight, and the caliber of the antenna is capable of being made maximally.
Description
Technical field
This practicality is with novel a kind of space radio telescope reception antenna that relates to, particularly a kind of gas-filled type space radio telescope reception antenna.
Background technology
Telescopical ability to work is by the decision of sensitivity and resolution, because the radio radiation of the sun, ground etc. is very low, so radio telescope can all weather operations, and is subjected to the influence of weather very little.But for optical telescope, the resolution of single radio telescope very low (resolution is directly proportional with telescopical bore, is inversely proportional to the observation wavelength, and the wavelength of radio telescope is much larger than optical telescope).Radio telescope is taked comprehensive bore radio telescope in order to improve resolution, and operation principle is that the signal of a plurality of telescope antennas receptions of different location is interfered, and consequently the distance between each telescope just is equal to telescopical bore.This cover technology is referred to as: (the English abbreviation: VLBI), so the distance between the telescope (just baseline is long more) far away more, the resolution of VLBI is just high more, and high more also just meaning of resolution sees distant objects clear more in the very long baseline interference.The VLBI technology is used for the orbit determination of lunar exploration engineering, and the long more orbit determination of baseline is just accurate more.But the diameter of the earth is limited, and promptly the baseline of VLBI can not be above the diameter of the earth on earth.So a lot of countries in the world have proposed the reception antenna of radio telescope is placed on space, are referred to as: space VLBI technology (English abbreviation: VSOP).Can make the restriction of the baseline breakthrough earth of VLBI itself like this, baseline can be far longer than the diameter of the earth.Because enlarging markedly of baseline, the resolution of space-ground joint observation is more than 3 times of ground-based telescope group resolution, and wherein the resolution in north-south has improved more than seven times.As seen the advantage of VSOP on resolution is very tangible, and continuous maturation and the baseline along with technology constantly increases in the future, and VSOP will have very wide development prospect.Notice two big main points of VLBI observation: resolution and sensitivity, and the bore of antenna has determined telescopical sensitivity (sensitivity square is directly proportional with bore), bore is big more, and the signal that receives in the identical time is just many more, just can receive farther more weak signal.Be understood that the necessity that improves space radio telescope bore (receiving area).Because various technical reasons, be subjected to the restriction of volume and weight when particularly firing a rocket, the bore of telescope antenna is difficult to increase all the time, that is to say, aerial radio telescope can realize just that at present the growth baseline improves this advantage of resolution, improves the at present temporary no effective way of sensitivity to increasing bore.And at present the technical scheme of VSOP antenna nearly all is to adopt the support frame of metal as antenna, and the metal advantage is that hardness is strong, but that shortcoming is a quality is big, and volume can not shrink arbitrarily.So volume is still bigger after the folding contraction of antenna, and the volume in rocket loading cabin is very limited.Therefore under the launching condition of common rocket, the bore of the VSOP antenna of metallic framework is difficult to break through 15 meters these bottlenecks.
Summary of the invention
The purpose of this utility model is to have difficult folding or contraction in order to solve existing space radio telescope antenna, bore is less, and the emission volume is big, the problem of Heavy Weight and a kind of gas-filled type space radio telescope reception antenna is provided, the technical scheme that it adopts is: the reception antenna of a kind of space radio telescope, it comprises: be used to receive electromagnetic primary reflection surface, be positioned at the primary reflection surface top and be used to receive the electromagnetic subreflector that reflects from primary reflection surface, be positioned at the subreflector below and be used to collect the electromagnetic focusing surface of subreflector reflection, the pair reflection registration wire that is used for fixing subreflector, it is characterized in that: also comprise the inflation principal arm that is used to support the entire antenna structure, the top inflation ring that is used for fixing secondary reflection registration wire that links to each other with inflation principal arm top, the inflation that the is used for fixing primary reflection surface time armlet that links to each other with the inflation principal arm, and the suspension cable between inflation principal arm and inflation time armlet that is used for supporting and adjusting the primary reflection surface body.Operation principle of the present utility model is: electromagnetic wave normal sheaf primary reflection surface, reflex to subreflector through primary reflection surface, and reflex to focusing surface through subreflector again, finish whole electromagnetic receiving course through the receiving system that is connected with focusing surface again.
The beneficial effects of the utility model are:
First, owing to adopt inflation principal arm, inferior armlet and suspension cable to support the entire antenna structure, and the inflation time closed loop and the suspension cable of the pair of fixed joint reflecting surface reflection registration wire and support and adjustment primary reflection surface all are collapsible to minimum, for same rocket launching volume, big at least several times of the bore of the space radio telescope reception antenna of the comparable metallic framework of gas-filled type space radio telescope reception antenna, the direct result that bore enlarges are exactly that the sensitivity of antenna improves greatly.
The second, in emission process, it is better than the shock resistance of metallic framework to shrink the inferior armlet of compact inflation principal arm and inflation.
The 3rd, because the weight of gas-filled type space radio telescope reception antenna itself is lighter, change direction in that space is easier.
The 4th, day and night temperature is very big in space, the uncontrollable and adjusting for long its temperature deformation of metallic framework, and gas-filled type space radio telescope reception antenna can be adjusted the deformation that temperature causes automatically by the control air pressure inside.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model one embodiment;
The vertical view of Fig. 2 Fig. 1;
Fig. 3 is the cutaway view of A-A direction among Fig. 2;
Fig. 4 is the schematic perspective view that Fig. 1 takes away protective coat.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The reception antenna of space described in the utility model radio telescope such as Fig. 1 are to shown in Figure 4, it comprises: be used to receive electromagnetic primary reflection surface 1, be positioned at primary reflection surface 1 top and be used to receive the electromagnetic subreflector 2 that reflects from primary reflection surface 1, be positioned at the subreflector below and be used to collect the electromagnetic focusing surface 3 of subreflector 2 reflections, the pair reflection registration wire 201 that is used for fixing subreflector 2, also comprise the inflation principal arm 6 that is used to support the entire antenna structure, the top inflation ring 4 that is used for fixing secondary reflection registration wire 20 1 that links to each other with inflation principal arm 6 tops, the inflation that the is used for fixing primary reflection surface 1 time armlet 7 that links to each other with inflation principal arm 6, and the suspension cable 8 between inflation principal arm 6 and inflation time armlet 7 that is used for supporting and adjusting primary reflection surface 1 body.
Described suspension cable 8 is the gauzes that are made of warp 801 and parallel 802,
For avoiding antenna when turning to, to produce distortion, be provided with center rest 5 between described top inflation ring and the inflation principal arm.
In order to increase the existence operating time of gas-filled type radio telescope reception antenna at space, as shown in Figure 4, be provided with standby inner bag 10 in the described inflation principal arm 6, when inflation principal arm 6 operate as normal, the not inflation of standby inner bag 10 is retracted to be fixed on and inflates in the principal arm 6.When inflation principal arm 6 broke or damaged by external power effect, the air pressure in the inflation principal arm 6 sharply descended, and inflate the crossover valve (not shown) this moment and automatically charging valve are transformed into standby inner bag 10 and are its inflation, make inflation principal arm 6 return to normal condition rapidly.
With identical principle, inflation time armlet 7 also can use the same method and inflate and be provided with standby inner bag.
For stoping various unnecessary radiation (as radiation rays various in the universe etc.), prolong the useful life of antenna, described antenna side and bottom surface are enclosed with one deck protective coat 9.
Operation principle of the present utility model is an electromagnetic wave normal sheaf primary reflection surface 1, reflex to subreflector 2 through primary reflection surface 1, reflex to focusing surface 3 through subreflector 2 again, finish whole electromagnetic receiving course through the receiving system (not shown) that is connected with focusing surface 3 again.
Claims (6)
1. the reception antenna of a space radio telescope, it comprises: be used to receive electromagnetic primary reflection surface, be positioned at the primary reflection surface top and be used to receive the electromagnetic subreflector that reflects from primary reflection surface, be positioned at the subreflector below and be used to collect the electromagnetic focusing surface of subreflector reflection, the pair reflection registration wire that is used for fixing subreflector, it is characterized in that: also comprise the inflation principal arm that is used to support the entire antenna structure, the top inflation ring that is used for fixing secondary reflection registration wire that links to each other with inflation principal arm top, the inflation that the is used for fixing primary reflection surface time armlet that links to each other with the inflation principal arm, and the suspension cable between inflation principal arm and inflation time armlet that is used for supporting and adjusting the primary reflection surface body.
2. the reception antenna of space as claimed in claim 1 radio telescope is characterized in that: described suspension cable is the gauze of the formation of a warp and parallel.
3. the reception antenna of space as claimed in claim 1 radio telescope is characterized in that: be provided with center rest between described top inflation ring and the inflation principal arm.
4. the reception antenna of space as claimed in claim 1 radio telescope is characterized in that: be provided with standby inner bag in the described inflation principal arm.
5. the reception antenna of space as claimed in claim 1 radio telescope is characterized in that: be provided with standby inner bag in the described inflation time armlet.
6. the reception antenna of space as claimed in claim 1 radio telescope is characterized in that: described antenna side and bottom surface are enclosed with one deck protective coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200689170U CN201038322Y (en) | 2007-04-12 | 2007-04-12 | Spatial radio telescope receiving antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200689170U CN201038322Y (en) | 2007-04-12 | 2007-04-12 | Spatial radio telescope receiving antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038322Y true CN201038322Y (en) | 2008-03-19 |
Family
ID=39210842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200689170U Expired - Fee Related CN201038322Y (en) | 2007-04-12 | 2007-04-12 | Spatial radio telescope receiving antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201038322Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555842A (en) * | 2015-01-27 | 2015-04-29 | 中国科学院国家天文台 | Method and device for maintaining FAST (five-hundred-meter aperture spherical radio telescope) reflecting surface |
| US10862189B1 (en) * | 2016-11-10 | 2020-12-08 | United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration | Near earth and deep space communications system |
-
2007
- 2007-04-12 CN CNU2007200689170U patent/CN201038322Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555842A (en) * | 2015-01-27 | 2015-04-29 | 中国科学院国家天文台 | Method and device for maintaining FAST (five-hundred-meter aperture spherical radio telescope) reflecting surface |
| US10862189B1 (en) * | 2016-11-10 | 2020-12-08 | United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration | Near earth and deep space communications system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20130412 |