CN103036054B - A kind of dull and stereotyped radio telescope - Google Patents

Abstract

The invention discloses a kind of dull and stereotyped radio telescope, comprise the super material plate aerial that is arranged on receiver rear, described super material plate aerial comprises core layer and reflecting plate, core layer comprises at least one core layer lamella, core layer lamella comprises the base material of sheet and is arranged on the multiple artificial micro-structural on base material, core layer lamella can be divided into multiple belt-like zones according to index distribution, taking a fixed point as the center of circle, on multiple belt-like zones, the refractive index at same radius place is identical, and the increase refractive index along with radius on each belt-like zone reduces gradually, adjacent two belt-like zones, the minimum of a value of the refractive index of the belt-like zone in inner side is less than the maximum of the refractive index of the belt-like zone in outside. according to dull and stereotyped radio telescope of the present invention, replace traditional parabola antenna by the super material plate aerial of sheet, to manufacture processing and be more prone to, cost is cheaper.

Description

A kind of dull and stereotyped radio telescope

Technical field

The present invention relates to the communications field, more particularly, relate to a kind of dull and stereotyped radio telescope.

Background technology

Radio telescope (radiotelescope) refers to observation and research substantially establishing from the radio wave of celestial bodyStandby, can measure intensity, frequency spectrum and the polarization equivalent of celestial radio. Radio telescope mainly comprises two large portionsPoint, i.e. antenna and receiving system, antenna is used for collecting radio wave, and receiving system generally includes amplifies radio letterNumber high sensitive receiver, information-recording apparatus, signal handling equipment and display device etc. TraditionalThe general principle of radio telescope is similar with optical reflection telescope, and the electromagnetic wave that projection comes is by an essenceReally, after mirror-reflection, homophase arrives public focus. Be easy to realize together as minute surface with the paraboloid of revolution and meetJiao, therefore, Radio Telescope Antenna is parabola antenna mostly. Radio telescope surface and an idealParaboloidal mean square error is as being not more than λ/16～λ/10, and this telescope generally just can be greater than λ at wavelengthRadio wavelength band on effectively work. To metric wave or the observation of long decimetric wave, can make minute surface with wire netting; And to centimeter wave and millimeter wave observation, need to use up sliding accurate metallic plate (or plated film) and make minute surface.The radio wave that carrys out and be pooled to telescope focus from celestial body projection, must reach certain power level, could be detected by receiver. Current detection technique level requires the most weak level generally should reach10-20 watt. First radiofrequency signal power amplify 10～1000 times at focus place, and be transformed into lowerFrequency (intermediate frequency), is then sent to control room with cable, there further amplification, detection again, finally record, process and show to be suitable for the mode of particular studies. Antenna is collected penetrating of celestial bodyElectric radiation, receiver is processed these signals, change into can be for the form of record, demonstration, and terminal is establishedStandby signal is recorded, and carried out some processing by specific requirement and then show. Sign is penetratedThe basic index of radiotelescope performance is spatial resolution and sensitivity, and the former reflects two celestial spheres of differentiationThe ability of upper radio point source close to each other, the latter is reflected the ability of surveying faint radio source. Radio is hopedMirror far away requires to have high spatial resolution and high sensitivity conventionally. Sensitivity refers to radio telescope "Low survey " energy value, this is worth, and more muting sensitivity is higher. Have for improving the conventional way of sensitivityReduce the intrinsic noise of receiver itself, increase antenna reception area, extend and observe the time of integration etc.Resolution ratio refers to the ability of two radio sources close to each other distinguished, and resolution ratio is higher just can be by nearer twoIndividual radio source separately. So, how to improve the resolution ratio of radio telescope? single antenna radio is hopedMirror far away, the larger resolution ratio of diameter of antenna is higher. But the diameter of antenna is difficult to do very greatly,The maximum gauge of single antenna is less than 300 meters at present, and the radio wavelength band resolution ratio of growing for wavelength stillVery low. Resolution ratio refers to the ability of distinguishing two identical point sources close to each other, because two point sourcesWhen must being greater than the half-power beam width of antenna radiation pattern, can differentiate angular distance, therefore radio should be looked in the distanceIt is wide that the resolution ratio of mirror is defined as the half-power of its principal direction bundle. By the diffraction of electric wave is limit, to simplyRadio telescope, it is determined by physical size D and the wavelength X of antenna aperature.

Visible traditional radio telescope performance depends primarily on the size of antenna, and still, processing like thisLarge-sized parabola antenna not only difficulty of processing is large, and the suitable height of cost.

Summary of the invention

Technical problem to be solved by this invention is, for existing radio telescope processing be difficult for, cost is highDefect, a kind of dull and stereotyped radio telescope simple, low cost of manufacture of processing is provided.

The technical solution adopted for the present invention to solve the technical problems is: a kind of dull and stereotyped radio telescope, described inDull and stereotyped radio telescope comprises the super material plate aerial that is arranged on receiver rear, dull and stereotyped day of described super materialLine comprises core layer and is arranged on the reflecting plate of core layer one side surface, and described core layer comprises at least one coreHeart synusia layer, described core layer lamella comprises the base material of sheet and is arranged on the multiple artificial micro-knot on base materialStructure, described core layer lamella can be divided into multiple belt-like zones according to index distribution, taking a fixed point as the center of circle,On described multiple belt-like zone, the refractive index at same radius place is identical, and on each belt-like zone along with radiusIncrease refractive index and reduce gradually, adjacent two belt-like zones, the refractive index of the belt-like zone in inner side isLittle value is less than the maximum of the refractive index of the belt-like zone in outside, and this center of circle is vertical with the line of receiverIn core layer lamella, and this center of circle not with the center superposition of core layer lamella.

Further, described core layer lamella also comprises the packed layer that covers artificial micro-structural.

Further, described core layer comprises multiple core layer lamellas that are parallel to each other.

Further, all banded regions of the core layer lamella of close reflecting plate in described multiple core layer lamellaTerritory has identical variations in refractive index scope, and the refractive index of each belt-like zone is all by maximum n_maxBe reduced to continuously minimum of a value n_min。

Further, the index distribution of the core layer lamella of close reflecting plate in described multiple core layer lamellaMeet following formula:

${n\left(r\right)}_m=n_{\max }-\frac{\sqrt{r^2+s^2}-\sqrt{{(M_L+{\mathrm{seg}}_k)}^2+s^2}}{d};$

${\mathrm{seg}}_k=\sqrt{{(v_0+\mathrm{k\λ})}^2-s^2}-\sqrt{{v_0}^2\text{-}{s}^2};$

$k=\mathrm{floor}\left\{\frac{\sqrt{{\left(\right|r-M_L|+\sqrt{{v_o}^2-s^2})}^2+s^2}-v_0}{\mathrm{\λ}}\right\};$

$v_o=\sqrt{{M_L}^2+s^2};$

Wherein, n (r)_mRepresent that on this core layer lamella, radius is the refractive index value at r place, m represents this core layerTotal number of plies of the numbering of lamella and core layer lamella;

S is the vertical range that receiver arrives the core layer lamella close with it;

D is the thickness of core layer.

Further, the index distribution of other core layer lamella meets following formula:

${n\left(r\right)}_j=n_{\min }+\frac{j}{m}({n\left(r\right)}_m-n_{\min });$

Wherein, j represents the numbering of core layer lamella, is numbered m, by reflecting near the core layer of reflecting platePlate is to receiver direction, and numbering reduces successively, is numbered 1 near the core layer lamella of receiver.

Further, described core layer is made up of 7 core layer lamellas, i.e. m=7.

Further, the described center of circle is arranged on the lower limb of core layer lamella at a distance of M_LPosition on.

Further, described lower limb is straight line, described M_LRepresent the distance of the center of circle and lower limb mid point.

Further, described lower limb is curve, described M_LRepresent the distance on the center of circle and lower limb summit.

Further, the multiple artificial micro-structural shape of each core layer lamella of described core layer is identical, phaseMultiple artificial micro-structural with radius has identical physical dimension, and on each belt-like zone along with radiusThe physical dimension of the artificial micro-structural of increase reduce gradually, adjacent two belt-like zones, in the band shape of inner sideThe minimum of a value of the artificial micro-structural physical dimension in region is less than the artificial micro-structural of the belt-like zone in outsideThe maximum of physical dimension.

Further, described super material plate aerial is made up of multiple cell boards.

Further, described multiple cell boards are of similar shape, and are length and width is 0.5mSquare plate.

According to dull and stereotyped radio telescope of the present invention, replace traditional throwing by the super material plate aerial of sheetObject plane antenna, manufactures processing and is more prone to, and cost is cheaper.

Brief description of the drawings

Fig. 1 is the stereogram of dull and stereotyped radio telescope of the present invention;

Fig. 2 is another visual angle of Fig. 1 figure;

Fig. 3 is the perspective diagram of the super material cell of a kind of form of the present invention;

Fig. 4 is the index distribution schematic diagram of square core layer lamella of the present invention;

Fig. 5 is the structural representation of the core layer lamella of a kind of form of the present invention;

Fig. 6 is the index distribution schematic diagram of semicircular core layer lamella of the present invention;

Fig. 7 is the index distribution schematic diagram of the core layer lamella of circle of the present invention;

Fig. 8 is the index distribution schematic diagram of oval-shaped core layer lamella of the present invention.

Detailed description of the invention

As shown in Figures 1 to 5, according to the present invention, dull and stereotyped radio telescope comprises and is arranged on receiver 1 rearSuper material plate aerial 100, described super material plate aerial 100 comprises core layer 10 and is arranged on coreReflecting plate 200 on heart layer one side surface, described core layer 10 comprises at least one core layer lamella 11,Described core layer lamella comprises the base material 13 of sheet and is arranged on the multiple artificial micro-structural on base material 1312, described core layer lamella 11 can be divided into multiple belt-like zones according to index distribution and (in figure, use respectivelyH1, H2, H3, H4, H5 represents), taking a fixed point as the center of circle, on described multiple belt-like zones identical halfThe refractive index at footpath place is identical, and on each belt-like zone, the increase refractive index along with radius reduces gradually, adjacentTwo belt-like zones, the minimum of a value of the refractive index of the belt-like zone in inner side is less than the banded regions in outsideThe maximum of the refractive index in territory, the line of this center of circle and receiver 1 is perpendicular to core layer lamella 11, and shouldThe center of circle not with the center superposition of core layer lamella 11, receiver 1 is not in the axis of core layer lamella 11Above, realized the offset-fed of antenna. Super material plate aerial 100 shown in Fig. 1 is to be laid on smooth groundOn, receiver 1 is erected at the top of super material plate aerial 100 by bracing frame 300, and receiver existsThe projection on ground drops on the periphery of super material plate aerial 100. Certainly super material plate aerial 100 is also passableBe erected in the air by support. In addition, receiver 1 also can be erected at other position. Receiver is in additionTradition radio telescope receiver used, there is no special feature. In the present invention, as shown in Figure 2, described inThe center of circle is arranged on the lower limb of core layer lamella at a distance of M_LPosition on, like this, just avoided what is called to connectThe impact of receipts machine shade, at antenna area, machining accuracy, under the identical prerequisite of receive frequency, can improveThe gain of antenna. Core layer lamella 11 in Fig. 4 is square, in such cases, and described M_LRepresent circleThe distance of heart O1 and lower limb B1 mid point. Certainly, core layer lamella 11 can be also other shape, exampleSemicircle as described in Figure 6. Shape shown in Fig. 2, Fig. 5 has a common ground, i.e. its lower limb B1Be straight line, and the distance of center of circle O1 and lower limb B1 mid point is M_L. Certainly core layer lamella 11,It can also be the ellipse shown in the circle shown in Fig. 7 or Fig. 8; Shown in circle shown in Fig. 7 and Fig. 8Oval its lower limb B2 can regard one section of circular arc (curve) as, and its lower limb B2 is curve, thisIn the situation of kind, described M_LRepresent the distance on center of circle O2 and lower limb B2 summit, center of circle O2 is with followingThe distance of edge B2 mid point is M_L. The shape of core layer lamella can also have other shape according to different needsShape, can be regular shape, can be also irregular shape. Adopt the feelings of electromagnetic horn at receiverUnder condition, M_LValue and the subtended angle of electromagnetic horn, and angle of inclination is relevant, this is according to different needsCan reasonably adjust, the benefit of design is for whole core layer can be played a role like this, certainlyM_LValue can be zero, effect may be weaker, but also can realize the present invention. In addition, thisIn bright, reflecting plate 200 is for to have smooth surperficial metallic reflection plate, can be for example polishing copper coin,Aluminium sheet or iron plate etc.

As shown in Figure 1, described core layer 10 comprises multiple core layer lamellas 11 that are parallel to each other. Multiple coreHeart synusia layer 11 fits tightly, each other can be bonding by double faced adhesive tape, or fix by bolt etc.Connect. In addition, described core layer lamella 11 also comprises the packed layer 15 that covers artificial micro-structural 12, fills outFilling layer 15 can air, can be also other dielectric-slab, is preferably that the material identical with base material 13 makePlate-like piece. As shown in Fig. 3 and Fig. 5, each core layer lamella 11 can be divided into multiple identical super materialsMaterial unit D, each super material cell D is filled by an artificial micro-structural 12, unit base material V and unitLayer W forms, and each core layer lamella 11 only has a super material cell D on thickness direction. Each is superMaterial cell D can be identical square, can be cube, also cuboid, and each is superThe length physical dimension of material cell D be not more than incident electromagnetic wave wavelength 1/5th (conventionallyFor incident electromagnetic wave wavelength 1/10th), to make whole core layer there is continuous electric field to electromagnetic waveAnd/or magnetic responsiveness. Under preferable case, described super material cell D is that the length of side is incident electromagnetic wave wavelength ten/ mono-cube. Certainly, the thickness of packed layer can regulate, and its minimum of a value can be down to 0, alsoIn other words do not need packed layer, in such cases, unit base material V and the super material of artificial micro-structural 12 compositionUnit, thickness that now the thickness of super material cell D equals unit base material V adds artificial micro-structuralThickness, but now, the thickness of super material cell D also will meet the requirement of 1/10th wavelength, therefore,In fact, be selected in 1/10th wavelength unit base material V at the thickness of super material cell DThickness larger, the thickness of unit packed layer W is less,, in optimum situation, is certainly as Fig. 3Shown situation, the thickness of unit base material V equals the thickness of unit packed layer W, and first unit base materialThe material of V is identical with packed layer W's.

Artificial micro-structural 12 of the present invention is preferably metal micro structure, and described metal micro structure is by one or manyMetal line composition. Metal wire itself has certain width and thickness. Metal micro structure of the present invention is preferredFor having the metal micro structure of isotropic electromagnetic parameter, the alabastrine metal of plane is as described in Figure 3 micro-Structure.

For the artificial micro-structural with planar structure, isotropism, refer to on this two dimensional surface withArbitrary electromagnetic wave of unspecified angle incident, electric field response and the magnetic field of above-mentioned artificial micro-structural in this plane ringsShould be all identical, be also that dielectric constant is identical with magnetic conductivity; For the artificial micro-structural with three-dimensional structure, eachRefer to the electromagnetic wave for incident in three-dimensional either direction to the same sex, each above-mentioned artificial micro-structuralElectric field response on three dimensions and magnetic responsiveness are all identical. When artificial micro-structural is 90 degree Rotational SymmetriesWhen structure, artificial micro-structural has isotropic feature.

For two-dimension plane structure, 90 degree Rotational Symmetries refer to its in this plane around one perpendicular to this planeAnd overlap with original structure after any 90-degree rotation of the rotating shaft of crossing its symmetrical centre; For three-dimensional structure, asFruit has 3 rotating shafts of vertical and common intersection point (intersection point is pivot) between two, makes this structure around appointingAfter one rotating shaft 90-degree rotation, all overlap with original structure or with original structure with an interface symmetry, this knotStructure is 90 degree rotational symmetry structures.

The alabastrine metal micro structure of plane shown in Fig. 3 is the one of isotropic artificial micro-structuralForm, described alabastrine metal micro structure has the first metal wire 121 and second of mutually vertically dividing equallyMetal wire 122, described the first metal wire 121 two ends are connected with two the first metal branches of equal length1211, described the first metal wire 121 two ends are connected on the mid point of two the first metal branches 1211, instituteState two the second metal branches 1221 that the second metal wire 122 two ends are connected with equal length, described secondMetal wire 122 two ends are connected on the mid point of two the second metal branches 1221.

Known refractive indexWherein μ is relative permeability, and ε is relative dielectric constant, and μ and ε closeBe called electromagnetic parameter. Experiment showed, when electromagnetic wave passes through refractive index dielectric material heterogeneous, can be to refractionThe direction deviation (to the large super material cell deviation of refractive index) that rate is large. Therefore, core layer pair of the present inventionElectromagnetic wave has the effect of converging, and the electromagnetic wave that remote celestial body sends is converging by core layer for the first time firstEffect, through baffle reflection, then by the effect of converging for the second time of core layer, therefore, appropriate design coreThe index distribution of heart layer, can make electromagnetic wave that remote celestial body sends successively through converging for the first time,After baffle reflection and second converges, can converge on receiver. At the material of base material and packed layerIn the selected situation of material, can be by shape, the physical dimension and/or artificial micro-of the artificial micro-structural of designThe electromagnetic parameter that structure arranging on base material obtains core layer inside distributes, thereby designs each super materialThe refractive index of unit. First calculate the electromagnetic parameter of core layer inside from the needed effect of core layerSpatial distribution (being the electromagnetic parameter of each super material cell), selects according to the spatial distribution of electromagnetic parameterShape, the physical dimension of the artificial micro-structural in each super material cell (have been deposited multiple in advance in computerArtificial micro-structural data), can use the method for exhaustion to the design of each super material cell, for example first select oneThere is the artificial micro-structural of given shape, calculate electromagnetic parameter, the contrast that the result obtaining and we are wanted,Circulation repeatedly, till the electromagnetic parameter that finds us to want, if found, has completed artificial micro-The design parameter of structure is selected; If do not find, change a kind of artificial micro-structural of shape, repeat following aboveRing, till the electromagnetic parameter that finds us to want. If still do not found, said process is not yetCan stop. The artificial micro-structural that is to say the electromagnetic parameter that has only found our needs, program just can be stoppedOnly. Because this process is all completed by computer, therefore, seem complicated, in fact can complete soon.

In the present invention, the base material of described core layer is by ceramic material, macromolecular material, ferroelectric material, iron oxygenMaterial or ferromagnetic material etc. make. Macromolecular material is available polytetrafluoroethylene (PTFE), epoxy resin, F4BComposite, FR-4 composite etc. For example, the electrical insulating property of polytetrafluoroethylene (PTFE) is not very good, therefore notCan electromagnetic electric field be produced and be disturbed, and there is good chemical stability, corrosion resistance, use the longevityLife is long.

In the present invention, described metal micro structure is the metal wires such as copper cash or silver-colored line. Above-mentioned metal wire can lead toSpend etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method be attached on base material. Certainly, alsoCan adopt three-dimensional laser processing technology.

As shown in Figure 2, be the structural representation of super material plate aerial of the present invention, its side-looking that is Fig. 1Figure (having omitted bracing frame), the core layer lamella 117 of close reflecting plate in described multiple core layer lamellas 11All belt-like zones there is identical variations in refractive index scope, the refractive index of each belt-like zone is allBy maximum n_maxBe reduced to continuously minimum of a value n_min, as an example, n_maxCan value 6, n_minValue 1,, the refractive index of each belt-like zone is to be all reduced to continuously 1 by 6. The folding of above-mentioned core layer lamella 117The rate of penetrating distributes and meets following formula:

${n\left(r\right)}_m=n_{\max }-\frac{\sqrt{r^2+s^2}-\sqrt{{(M_L+{\mathrm{seg}}_k)}^2+s^2}}{d}---\left(1\right);$

${\mathrm{seg}}_k=\sqrt{{(v_0+\mathrm{k\λ})}^2-s^2}-\sqrt{{v_0}^2\text{-}{s}^2}---\left(2\right);$

$k=\mathrm{floor}\left\{\frac{\sqrt{{\left(\right|r-M_L|+\sqrt{{v_o}^2-s^2})}^2+s^2}-v_0}{\mathrm{\λ}}\right\}---\left(3\right);$

$v_o=\sqrt{{M_L}^2+s^2}---\left(4\right);$

Wherein, n (r)_mRepresenting that on this core layer lamella, radius is the refractive index value at r place, is also core layer lamellaUpper radius is the refractive index of the super material cell D of r; Herein radius refer to each unit base material V inPoint is to the distance of center of circle O1, and the mid point of unit base material V herein, refers to unit base material V and the center of circleThe mid point on the conplane surface of O1. M represents the total of the numbering of this core layer lamella and core layer lamellaThe number of plies;

S is the vertical range of receiver 1 to the core layer lamella 111 close with it;

D is the thickness of core layer;

In formula, floor represents downward round numbers; K can also be used to represent the numbering of belt-like zone, whenWhen k=0, represent first belt-like zone H1; In the time of k=1, represent adjacent with first belt-like zone H1Second belt-like zone H2; The rest may be inferred. It is (true that the maximum of r has been determined how many belt-like zonesDetermine k value). (the normally incident electromagnetic wave wavelength that the thickness of each core layer lamella is normally certain1/10th), like this, in the situation that core layer shape is selected (can be cylinder or square), core layerThe size of lamella just can be determined.

By formula (1), formula (2), formula (3) and the determined core layer 10 of formula (4), energyEnough ensure that the electromagnetic wave that remote celestial body sends converges to receiver 1 place. This passes through computer simulation emulation,Or utilize optical principle to obtain.

In the present embodiment, the thickness of core layer lamella 11 is certain, conventionally in incident electromagnetic wave wavelength XBelow 1/5th, preferably 1/10th of incident electromagnetic wave wavelength X. Like this, if operating frequency choosingFixed (being that wavelength is certain), then in conjunction with the assembly space requirement of antenna, other in the above-mentioned formula of appropriate designVariable, just can realize the electromagnetic wave that satellite sends and converge to receiver 1 place. To the antenna of optional frequency allCan so design, therefore just can design the dull and stereotyped radio telescope of the frequency that we want arbitrarily.

As shown in Figure 1, in the present embodiment, the index distribution of other core layer lamella meets following formula:

${n\left(r\right)}_j=n_{\min }+\frac{j}{m}({n\left(r\right)}_m-n_{\min })---\left(5\right);$

Wherein, j represents the numbering of core layer lamella, is numbered m, by reflecting near the core layer of reflecting platePlate is to receiver direction, and numbering reduces successively, is numbered 1 near the core layer lamella of receiver.

In the present embodiment, as shown in Figure 1, described core layer is made up of 7 core layer lamellas, i.e. m=7.By reflecting plate to receiver direction, the index distribution of each core layer lamella is followed successively by:

The 7th core layer lamella: ${n\left(r\right)}_7=n_{\max }-\frac{\sqrt{r^2+s^2}-\sqrt{{(M_L+{\mathrm{seg}}_k)}^2+s^2}}{d};$

The 6th core layer lamella: ${n\left(r\right)}_6=n_{\min }+\frac{6}{7}({n\left(r\right)}_7-n_{\min });$

The 5th core layer lamella: ${n\left(r\right)}_5=n_{\min }+\frac{5}{7}({n\left(r\right)}_7-n_{\min });$

The 4th core layer lamella: ${n\left(r\right)}_4=n_{\min }+\frac{4}{7}({n\left(r\right)}_7-n_{\min });$

The 3rd core layer lamella: ${n\left(r\right)}_3=n_{\min }+\frac{3}{7}({n\left(r\right)}_7-n_{\min });$

The 2nd core layer lamella: ${n\left(r\right)}_2=n_{\min }+\frac{2}{7}({n\left(r\right)}_7-n_{\min });$

The 1st core layer lamella: ${n\left(r\right)}_1=n_{\min }+\frac{1}{7}({n\left(r\right)}_7-n_{\min });$

Fig. 5 is a kind of core layer lamella 11 of form, each core layer lamella 11 of described core layer manyIndividual artificial micro-structural 12 shapes are identical, are the alabastrine metal micro structure of plane, and metal micro structureCentral point overlaps with the mid point of unit base material V, and the multiple artificial micro-structural at same radius place has identicalPhysical dimension, and on each belt-like zone along with the physical dimension of the artificial micro-structural 12 of increase of radius graduallyReduce adjacent two belt-like zones, artificial micro-structural 12 physical dimensions of the belt-like zone in inner sideMinimum of a value is less than the maximum of artificial micro-structural 12 physical dimensions of the belt-like zone in outside. Due to oftenThe refractive index that one surpasses material cell is to reduce gradually along with the size reduction of metal micro structure, therefore artificialMicro-structural physical dimension is larger, and its corresponding refractive index is larger, therefore, can realize core by this modeThe index distribution of heart synusia layer is pressed the distribution of formula (1).

According to different needs (different incident electromagnetic waves), and different designs needs, core layer 10Can comprise the core layer lamella 11 as shown in Figure 5 of the different numbers of plies.

In addition, due to, radio telescope is huge especially, and one processing is more difficult, therefore, the present embodimentIn, as shown in Figure 1, described super material plate aerial 100 can be divided into multiple cell boards 1000, like thisFacilitate processing and manufacturing, also convenient transport, and installation and maintenance, can buckle between multiple cell boards 1000It can be also bonding by glue connecting, thereby forms an entirety. The formation of cell board 1000 can haveTwo kinds of modes below:

(1) after entirety processing, isolate in flakes, this mode is applicable to the plate aerial of less area.

(2) design the overall structure parameter of super material plate aerial, before manufacture, be divided into multipleCell board 1000, to the independent processing and manufacturing of these cell boards. This mode is applicable to superhuge flat board very muchAntenna processing. The plate aerial of square kilometre rank also can be obtained very easily. This mode in addition,Also very simple when installation, only need to select a smooth ground, lay as the mode of laying ceramic tile,Installation and maintenance are very simple.

By reference to the accompanying drawings embodiments of the invention are described above, above-mentioned but the present invention is not limited toDetailed description of the invention, above-mentioned detailed description of the invention is only schematically, instead of restrictive, thisThe those of ordinary skill in field, under enlightenment of the present invention, is protected not departing from aim of the present invention and claimIn the scope situation of protecting, also can make a lot of forms, within these all belong to protection of the present invention.

Claims (9)

1. a dull and stereotyped radio telescope, is characterized in that, described dull and stereotyped radio telescope comprises and being arranged onThe super material plate aerial at receiver rear, described super material plate aerial comprises core layer and is arranged on coreThe reflecting plate of layer one side surface, described core layer comprises multiple core layer lamellas that are parallel to each other, described coreSynusia layer comprises the base material of sheet and is arranged on the multiple artificial micro-structural on base material, described core layer lamellaBe divided into multiple belt-like zones according to index distribution, taking a fixed point as the center of circle, on described multiple belt-like zonesThe refractive index at same radius place is identical, and on each belt-like zone, the increase refractive index along with radius subtracts graduallyLittle, adjacent two belt-like zones, the minimum of a value of the refractive index of the belt-like zone in inner side is less than in outsideThe maximum of refractive index of belt-like zone, the line of this center of circle and receiver is perpendicular to core layer lamella, andThis center of circle not with the center superposition of core layer lamella;

In described multiple core layer lamella, all belt-like zones of the core layer lamella of close reflecting plate have phaseSame variations in refractive index scope, the refractive index of each belt-like zone is all by maximum n_maxReduce continuouslyTo minimum of a value n_min, the index distribution of the core layer lamella of close reflecting plate in described multiple core layer lamellasMeet following formula:

$n{\left(r\right)}_m=n_{max}-\frac{\sqrt{r^2+s^2}-\sqrt{{(M_L+{\mathrm{seg}}_k)}^2+s^2}}{d};$

${\mathrm{seg}}_k=\sqrt{{(v_0+k\mathrm{\λ})}^2-s^2}-\sqrt{v_0^2-s^2};$

$k=floor\left\{\frac{\sqrt{{\left(\right|r-M_L|+\sqrt{{v_o}^2-s^2})}^2+s^2}-v_0}{\mathrm{\λ}}\right\};$

$v_o=\sqrt{{M_L}^2+s^2};$

Wherein, n (r) m represents that on this core layer lamella, radius is the refractive index value at r place, and m represents this coreTotal number of plies of the numbering of synusia layer and core layer lamella;

S is the vertical range that receiver arrives the core layer lamella close with it;

D is the thickness of core layer;

M_LFor the distance of the lower limb of the described center of circle and described core layer lamella;

λ is the electromagnetic wavelength that is incident to described multiple core layer lamellas.

2. dull and stereotyped radio telescope according to claim 1, is characterized in that, described core synusiaLayer also comprises the packed layer that covers artificial micro-structural.

3. dull and stereotyped radio telescope according to claim 1, is characterized in that, other core synusiaThe index distribution of layer meets following formula:

$n{\left(r\right)}_j=n_{\min }+\frac{j}{m}(n{\left(r\right)}_m-n_{\min });$

Wherein, j represents the numbering of core layer lamella, is numbered m, by reflecting near the core layer of reflecting platePlate is to receiver direction, and numbering reduces successively, is numbered 1 near the core layer lamella of receiver.

4. dull and stereotyped radio telescope according to claim 3, is characterized in that, described core layer by7 core layer lamella compositions, i.e. m=7.

5. dull and stereotyped radio telescope according to claim 3, is characterized in that, described lower limb isStraight line, described M_LRepresent the distance of the center of circle and lower limb mid point.

6. dull and stereotyped radio telescope according to claim 3, is characterized in that, described lower limb isCurve, described M_LRepresent the distance on the center of circle and lower limb summit.

7. according to the dull and stereotyped radio telescope described in claim 2 to 6 any one, it is characterized in that,The multiple artificial micro-structural shape of each core layer lamella of described core layer is identical, same radius place multipleArtificial micro-structural has identical physical dimension, and on each belt-like zone along with the artificial micro-knot of increase of radiusThe physical dimension of structure reduces gradually, adjacent two belt-like zones, artificial micro-knot of the belt-like zone in inner sideThe minimum of a value of structure physical dimension is less than the maximum of the artificial micro-structural physical dimension of the belt-like zone in outsideValue.

8. dull and stereotyped radio telescope according to claim 1, is characterized in that, described super material is flatPlate antenna is made up of multiple cell boards.

9. dull and stereotyped radio telescope according to claim 8, is characterized in that, described multiple unitPlate is of similar shape, and is length and width and is the square plate of 0.5m.