CN2517124Y - Geostationary satellite earth station sunlight locating antenna - Google Patents

Abstract

The utility model relates to an antenna for solving the problems that the prior compass and inclinometer adjusting satellite directional antenna has a low precision, is time and labor consuming, and inconvenient, which is characterized in that the reflecting surface of the antenna is provided with a graduated scale and a gradienter, for positive fed and biasing antenna, a fishbone needling calibration benchmarking is arranged between the highest point and the tuner of the reflecting surface of the antenna, for the back fed antenna, a fishbone needling calibration benchmarking is arranged between the highest point and the vice reflecting surface of the reflecting surface, the utility model makes use of the sunshine to calculate and adjust the image position formed by the benchmarking irradiation, changes the azimuth and elevation of the antenna to locate the position of the satellite rapidly, the utility model has the advantages of high precision, convenient and swift adjustment, time and labor saving, saving cost of installation and debugging of users.

Description

Synchronous satellite earth station sun positioning antenna

The utility model relates to a kind of synchronous satellite earth station sun positioning antenna.

The synchronous satellite earth station antenna of Chu Shouing is to satellite orientation in the market, according to by formula (1), the determined antenna azimuth Ψ of formula (2) and elevation angle Φ: antenna azimuth Ψ=tg ^-1[tg ( _L- _S)/sin θ _L]+180 ° ... (1) antenna elevation angle $\mathrm{\Φ}={\mathrm{tg}}^{-1}\frac{\cos ({\mathrm{\φ}}_L-{\mathrm{\φ}}_S)\cos {\mathrm{\θ}}_L-0.15127}{\sqrt{1-{\left[\cos ({\mathrm{\φ}}_L-{\mathrm{\φ}}_S)\cos {\mathrm{\θ}}_L\right]}^2}}-\mathrm{\β}---\left(2\right)$ Wherein:  _S---the longitude of putting under the satellite (degree)

 _L---the longitude (degree) of earth station

θ _L---the latitude value (degree) of earth station

The offset angle of β---antenna; Prime Focus Antenna β=0 °; Offset antenna is by manufacturer

Numerical value is provided.Owing to generally utilize compass, inclinator to measure at present, regulate orientation, the pitch regulation mechanism of antenna, satellite is carried out orientation have that indication is directly perceived, precision is not high, regulate distinct disadvantage such as waste time and energy, caused very big inconvenience to the user.

Goal of the invention of the present utility model is: provide a kind of not by compass, inclinator, only by the slide-rule dial directly perceived on the device, the adjusting that utilizes sunlight that special mark post is shone formed image position, and the synchronous satellite earth station sun positioning antenna that satellite is carried out slewing.

Goal of the invention of the present utility model is achieved in that synchronous satellite earth station sun positioning antenna, be erected at ground antenna holder by including, be installed in the antenna reflective face on this support, and the first-class assembly of the high frequency that matches with this reflecting surface constitutes, it is characterized in that: also include an end and be fixed on the antenna reflective face peak, the other end then is fixed on its tuner for just presenting with the offset antenna reflecting surface, then be fixed on for the rear feed antenna reflective face on the peak of its subreflector, and the body of rod has the antenna reflective face of being parallel to actinal surface, the length difference, arrange perpendicular to body of rod centerline direction, a mark post that is the little bar of fish bony spur shape, be contained in the ruler on the antenna reflective face, and be contained in the level meter of ruler top; The normal of the scale O of this mark post and antenna reflective face geometric center O after the installation " line OO " and antenna reflective face Coincide; The position of ruler on antenna reflective face, for actinal surface is oval-shaped reflecting surface, being in the position of its ellipse short shaft orthographic projection on reflecting surface, is circular reflecting surface for actinal surface, is in the position of perpendicular bisector orthographic projection on reflecting surface of actinal surface peak and minimum point line; Level meter is parallel with ruler.

The utility model has following advantage: owing to be provided with fish bony spur type scale mark post on antenna, utilize the calculating of the sunlight image position that irradiation forms to mark post to regulate, change the antenna azimuth and the elevation angle, no longer use compass, inclinator: can be fast to satellite fix, have precision height, easy to adjust quick, time saving and energy saving, save outstanding advantages such as user's Installation and Debugging cost.

The utility model schematic diagram Fig. 3 was in mark post scale analysis chart figure mark for the utility model pitching signal principle analysis figure Fig. 5 for mark post schematic diagram Fig. 6 for the utility model orientation signal principle analysis figure Fig. 4 when the utility model had following accompanying drawing: Fig. 1 to be the sunlight direct projection for the utility model structural representation Fig. 2: 1 is antenna holder, 2 is antenna reflective face, 3 is tuner, 4 is ruler, 5 is level meter, 6 is mark post, and 7 is the mark post fixture, and 8 is special-purpose tuner geometrical clamp.

The utility model is described in further detail below in conjunction with accompanying drawing:

Embodiment: synchronous satellite earth station sun location this antenna of offset antenna is by being erected at ground antenna holder 1, be installed in the offset antenna reflecting surface 2 on the support 1, be contained in the tuner 3 that the reflecting surface outside is mated, one end makes it be fixed on antenna reflective face 2 peak positions, the other end by mark post fixture 7 to make it be fixed on a mark post 6 on the tuner 3 by special-purpose tuner geometrical clamp 8, be contained in the ruler 4 on the antenna reflective face 2, and the level meter 5 that is contained in ruler 4 top positions is formed; Have three kinds of different little bars of length on the mark post 6, be parallel to the antenna reflective face actinal surface and perpendicular to the mark post centerline direction, arrange and to be fishbone, the scale O of this mark post and antenna-reflected geometric center O after the installation " connecting line OO " overlap with the antenna reflective face normal; Ruler is positioned at the position of elliptic reflecting surface actinal surface ellipse short shaft orthographic projection on reflecting surface; Level meter is parallel placement with ruler above ruler; By level meter, can adjust antenna reflective face, make its parallel ground of actinal surface ellipse short shaft.When the sunlight direct projection when the mark post, on antenna reflective face, form image, the image that its O is ordered is on O ', its A point image is at A ' point, and A ' on ruler, sees Fig. 2.Make Fig. 3 corresponding, Fig. 4 according to Fig. 2 with it.We use a computer, and according to formula (1), formula (2) calculates azimuth and the elevation angle of antenna installation ground to satellite S, knows the longitude  on antenna installation ground simultaneously _L, latitude θ _L, and local zone time at that time; Utilize astronomical computing formula to calculate at that time antenna installation ground, and then calculate the angle of cut Δ Ψ and the elevation difference ΔΦ (seeing Fig. 3, Fig. 4) of the satellite and the sun the azimuth and the elevation angle of the sun.OA is the some of mark post in Fig. 4, and the O point (length computation starting point) of mark post is same as the OO among Fig. 2 to antenna-reflected geometric center O " point apart from OO " ", for ease of analyzing, other draws 6.In Fig. 6: α=ΔΦ+β OO " be structural parameters; provide; so known γ is structural parameters; provide by factory by factory, so OA=AD/sin γ is then again for known OD=ADctg γ DO "=ADctg α OD+DO "=AD (ctg α+ctg γ) OO "=AD (ctg α+ctg γ) AD=OO "/ctg α+ctg γ $\mathrm{OA}=\frac{O{O}^{\″}}{\sin \mathrm{\γ}(\mathrm{ctg\α}+\mathrm{ctg\γ})}\…\…\left(3\right)$ In Fig. 3, because O " A ' be the some of the projection of antenna reflective face actinal surface ellipse short shaft on reflecting surface; O " A ' equation known (manufacturer provides), " the some tangent line is an axes of coordinates; the rectilinear point inclined equation of OA ' is definite by tg Δ Ψ and O (0; 0) point slope form equation, then O " A ' can calculate with normal n and O.In sum, cooperate calculation procedure software, as long as user's input: 1, these four parameters of topocentric longitude under the latitude 3 of the longitude 2 of earth station, earth station, the local time (year, month, day, hour, min, second) 4 of regulating antenna, the synchronous satellite can calculate OA, A ' O " value; When the sunlight direct projection, according to A point imaging characteristic, regulate the azimuth and the angle of pitch of antenna, A point image is transferred to A ' point, then antenna has promptly been aimed at satellite S.

Claims (1)

1, a kind of synchronous satellite earth station sun positioning antenna, be erected at ground antenna holder (1) by including, be installed in the antenna reflective face (2) on this support (1), and the tuner assemblies such as (3) that matches with this reflecting surface (2) constitutes, it is characterized in that: also include an end and be fixed on antenna reflective face (2) peak, the other end then is fixed on its tuner (3) for just presenting with the offset antenna reflecting surface, then be fixed on for the rear feed antenna reflective face on the peak of its subreflector, and the body of rod has the antenna reflective face of being parallel to actinal surface, the length difference, arrange perpendicular to body of rod centerline direction, a mark post (6) that is the little bar of fish bony spur shape is contained in the ruler (4) on the antenna reflective face (2) and is contained in the level meter (5) of ruler (4) top; The normal of the scale O of this mark post and antenna reflective face geometric center O after the installation " line OO " and antenna reflective face (2)

Coincide; The position of ruler (4) on antenna reflective face, for actinal surface is oval-shaped reflecting surface, be in its ellipse short shaft and go up the position of orthographic projection at reflecting surface (2), for actinal surface is circular reflecting surface, the perpendicular bisector that then is in actinal surface peak and minimum point line is in the position of the last orthographic projection of reflecting surface (2), and level meter parallels with ruler.

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