JPH0550991A - Mobile reception apparatus mounted on aircraft - Google Patents
Mobile reception apparatus mounted on aircraftInfo
- Publication number
- JPH0550991A JPH0550991A JP23692091A JP23692091A JPH0550991A JP H0550991 A JPH0550991 A JP H0550991A JP 23692091 A JP23692091 A JP 23692091A JP 23692091 A JP23692091 A JP 23692091A JP H0550991 A JPH0550991 A JP H0550991A
- Authority
- JP
- Japan
- Prior art keywords
- aircraft
- satellite
- rotation axis
- radio wave
- antenna
- 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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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は衛星電波の移動受信に
係り、特に航空機搭載用の移動受信装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mobile reception of satellite radio waves, and more particularly to a mobile receiving device mounted on an aircraft.
【０００２】[0002]
【従来の技術】従来、衛星からの放送電波などを受信す
る移動受信装置を列車や自動車などに設置する場合、そ
の屋根の上に設置できるためスペース的に余裕がとれ
る、水平移動時と停止時の車体の傾きに変化がないなど
の理由で電波を受信するアンテナ面は水平な面に置か
れ、方位角方向衛星追尾用の回転軸は鉛直になるよう設
置されるのが一般的であった。2. Description of the Related Art Conventionally, when a mobile reception device for receiving broadcast radio waves from a satellite is installed on a train or an automobile, it can be installed on the roof of the car, so that space is available. The antenna surface that receives radio waves was placed on a horizontal surface because the tilt of the car body of the vehicle did not change, and the rotation axis for tracking the azimuth direction satellite was generally installed vertically. ..
【０００３】[0003]
【発明が解決しようとする課題】航空機主翼の外壁は金
属板やＦＲＰ樹脂板などの材料で構成されている部分が
多く、衛星放送電波用移動受信装置を設置して電波を受
信するときは、電波に対し透過性のあるＦＲＰ樹脂板の
内壁部分にそれを設置する必要がある。さらに衛星から
の電波の入射角度、および翼の断面形状などを考慮する
と受信装置を設置できるのはかなり狭い範囲に限られ
る。このような状況のなかで受信装置を設置するとき、
方位角方向衛星追尾用の回転軸が鉛直になるよう設置し
た場合には、電波を透過するＦＲＰ樹脂板の外壁の面積
に比べ、受信アンテナの面積すなわち開口面の面積が小
さくなるという欠点があった。The outer wall of the main wing of an aircraft is often made of a material such as a metal plate or a FRP resin plate, and when a mobile receiver for satellite broadcast radio waves is installed to receive radio waves, It is necessary to install it on the inner wall of the FRP resin plate that is transparent to radio waves. Furthermore, considering the angle of incidence of radio waves from the satellite, the cross-sectional shape of the wing, etc., the receiver can be installed in a fairly narrow range. When installing the receiver in such a situation,
When the azimuth direction satellite tracking rotation axis is installed vertically, the area of the receiving antenna, that is, the area of the aperture surface, becomes smaller than the area of the outer wall of the FRP resin plate that transmits radio waves. It was
【０００４】また一般に航空機が上空で水平飛行をして
いる場合、地上で停止している場合に比べ機首側が上方
に数度ほど傾いた姿勢をしている。従って地上での水平
軸を基準にし受信装置を設置すると、上空で水平飛行中
衛星の受信方向によっては、方位角方向の回転に対し仰
角方向の変動が生じる。しかしアンテナの性能を十分に
発揮させるためには、なるべく受信利得が高いビーム中
心で受信しなければならない。Further, in general, when an aircraft is flying horizontally in the sky, the nose side is tilted upward by several degrees as compared with the case where the aircraft is stopped on the ground. Therefore, if the receiving device is installed with the horizontal axis on the ground as a reference, it fluctuates in the elevation direction with respect to the rotation in the azimuth direction depending on the receiving direction of the satellite that is flying horizontally in the sky. However, in order to maximize the performance of the antenna, it is necessary to receive at the beam center where the reception gain is as high as possible.
【０００５】従って本発明の目的は、受信アンテナの前
記開口面の面積が大きくとれて、受信状態改善の可能な
航空機搭載用移動受信装置を提供せんとするものであ
る。Therefore, an object of the present invention is to provide a mobile receiving device for mounting on an aircraft, in which the area of the opening surface of the receiving antenna is large and the receiving condition can be improved.
【０００６】また本発明の別の目的は、衛星追尾のため
の方位角方向の回転に対し仰角方向の変動が少なく受信
状態改善の可能な航空機搭載用移動受信装置を提供せん
とするものである。Another object of the present invention is to provide an on-vehicle mobile receiving device capable of improving the receiving condition with little fluctuation in the elevation direction with respect to rotation in the azimuth direction for satellite tracking. ..
【０００７】[0007]
【課題を解決するための手段】上記第１の目的を達成す
るための航空機搭載用移動受信装置の第１の発明は、航
空機搭載用の移動受信装置において、受信アンテナの開
口面を大きくとるため、到来衛星電波を受信する搭載用
アレイアンテナの受信面を、該航空機主翼の電波透過性
のある材料で構成された部分の内部でその外壁面の傾き
に合わせ、その方位角方向衛星追尾用の回転軸を傾けて
設置したことを特徴とするものである。According to a first aspect of the invention, there is provided a mobile receiving device for mounting on an aircraft, which has a large opening surface of a receiving antenna in the mobile receiving device for mounting on an aircraft. , The receiving surface of the on-board array antenna for receiving the incoming satellite radio waves is adjusted to the inclination of the outer wall surface inside the portion of the aircraft wing made of the radio wave permeable material for tracking the azimuth direction satellites. It is characterized in that it is installed with the rotation axis inclined.
【０００８】また上記第２の目的を達成するための航空
機搭載用移動受信装置の第２の発明は、到来衛星電波追
尾の仰角方向の変動をおさえるため、該衛星電波を受信
する搭載用アレイアンテナの受信面を、航空機の水平飛
行時の傾きを補正してその主翼内部に設置するととも
に、その方位角方向衛星追尾用の回転軸を前記補正に基
づき鉛直軸から傾けて設置したことを特徴とするもので
ある。A second invention of a mobile receiver for mounting on an aircraft for achieving the above second object is to mount an array antenna for receiving the satellite radio wave in order to suppress fluctuations in the elevation angle direction of the incoming satellite radio wave tracking. The receiving surface of the aircraft is installed inside the main wing by correcting the inclination of the aircraft during horizontal flight, and the rotation axis for tracking the azimuth direction satellite is tilted from the vertical axis based on the above correction. To do.
【０００９】[0009]
【作用】この移動受信装置第１の発明によれば、方位角
方向衛星追尾用の回転軸を傾けて受信アンテナ面を航空
機主翼外壁面の傾きに合わせて設置できるので、アンテ
ナの開口面が大きくとれて受信状態の改善がはかれる
し、第２の発明によれば、航空機の上空での水平飛行時
の姿勢に合わせて、予め受信アンテナの方位角方向衛星
追尾用の回転軸を傾けて設置できるので、衛星からの電
波の受信強度が大きくとれてこれまた受信状態の改善が
はかれる。According to the first aspect of the present invention of the mobile receiving device, since the receiving antenna surface can be installed in accordance with the inclination of the outer wall surface of the main wing of the aircraft by inclining the rotation axis for tracking the azimuth direction satellite, the antenna opening surface is large. According to the second aspect of the present invention, the reception state can be improved, and the azimuth direction satellite tracking rotation axis of the reception antenna can be installed inclining in advance according to the attitude during horizontal flight above the aircraft. Therefore, the reception strength of the radio wave from the satellite is large, and the reception condition can be improved.
【００１０】[0010]
【実施例】以下添附図面を参照し実施例により本発明を
詳細に説明する。図２に本発明に係る移動受信装置１の
航空機における取付位置の例を示す。図１(a) は、移動
受信装置設置部分断面図の第１の実施例を示す。移動受
信装置１は翼の外壁である金属板４、ＦＲＰ樹脂板３で
囲まれた内部に納められる。水平飛行状態では、衛星か
らの電波の到来方向である補助線７とＦＲＰ樹脂板３で
囲まれた範囲が受信可能な領域となる。また、移動受信
装置１は、回転軸２を中心にして方位角方向の電波追尾
を行なう。この時、衛星放送移動受信装置１は受信アン
テナの開口面を大きくとるために、なるべくＦＲＰ樹脂
板３に並行になるよう方位角方向の回転軸２をｙ軸方向
に傾けてある。回転軸２が傾いていることにより、方位
角方向の回転に対して生じる仰角方向の変動は仰角方向
の追尾によって補正される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 2 shows an example of the mounting position of the mobile receiving device 1 according to the present invention in an aircraft. FIG. 1 (a) shows a first embodiment of a partial sectional view of the mobile receiver installation. The mobile reception device 1 is housed inside an outer wall of the blade surrounded by a metal plate 4 and an FRP resin plate 3. In the horizontal flight state, the area surrounded by the auxiliary line 7 and the FRP resin plate 3, which is the direction of arrival of radio waves from the satellite, is the receivable area. In addition, the mobile receiving device 1 performs radio wave tracking in the azimuth direction around the rotation axis 2. At this time, in the satellite broadcast mobile receiving apparatus 1, the azimuth direction rotation axis 2 is tilted in the y-axis direction so as to be parallel to the FRP resin plate 3 as much as possible in order to make the opening surface of the receiving antenna large. Due to the inclination of the rotation axis 2, fluctuations in the elevation angle direction caused by rotation in the azimuth angle direction are corrected by tracking in the elevation angle direction.
【００１１】図３は、第１の実施例における移動受信装
置の電波受信の説明図である。図 1(a) 図示と同様に、
FRP 樹脂板３と電波到来方向を示す補助線７で囲まれた
範囲が電波受信可能範囲である。従来の方法のように受
信装置の方位角方向の回転軸を鉛直にして設置する場合
には、面積がＡのアンテナを設置できる（受信装置
８）。到来電波の仰角をφ1 としたときのアンテナの実
効面積をＡ1 とすると Ａ1 ＝Ａsin φ1 と表わされる。この時Ａ1 は全方位角方向に対して同一
である。次に受信装置１のように面積がＢ（Ｂ＞Ａ）で
あるアンテナを、方位角方向の回転軸をｙ方向にｘ軸よ
りθ1 （ただし、θ1 ＋φ1 ≦π／２かつφ1 −θ1 ＞
０）だけ傾けて設置することによってアンテナの実効面
積が広がり、ｙ方向の実効面積Ｂ1 は、 Ｂ1 ＝Ｂsin （θ1 ＋φ1 ） となり大幅に改善される。実効面積は方位角方向によっ
て変化し、−ｙ方向において最も小さくなるが、Ｂの値
を Ｂ＝Ａ sinφ1 ／sin(φ1 −θ1 ) となるように設定すれば、最小の実効面積Ｂ2 も受信装
置８と同じ面積Ａ1 を確保できる。 Ｂ2 ＝Ｂsin （φ1 −θ1 ） ＝Ａsin φ1 ＝Ａ1 このように、少ない取付スペースの中でより大型のアン
テナを設置することができるため、特にｙ方向における
アンテナの実効的な受信面積を拡大し受信状態を改善す
ることができる。FIG. 3 is an explanatory diagram of radio wave reception of the mobile receiving apparatus according to the first embodiment. As shown in Figure 1 (a),
The range surrounded by the FRP resin plate 3 and the auxiliary line 7 indicating the direction of arrival of the radio wave is the radio wave receivable range. When the receiver is installed with the rotation axis in the azimuth direction being vertical as in the conventional method, an antenna having an area A can be installed (receiver 8). When the effective area of the antenna is A 1 when the elevation angle of the incoming radio wave is φ 1 , it is expressed as A 1 = A sin φ 1 . At this time, A 1 is the same for all azimuth directions. Next, an antenna having an area of B (B> A) like the receiving device 1 is used, in which the rotation axis in the azimuth direction is in the y direction from the x axis by θ 1 (where θ 1 + φ 1 ≦ π / 2 and φ 1 −θ 1 ＞
When the antenna is tilted by 0), the effective area of the antenna is expanded, and the effective area B 1 in the y direction is B 1 = Bsin (θ 1 + φ 1 ), which is greatly improved. The effective area varies depending on the azimuth angle direction and becomes the smallest in the -y direction. However, if the value of B is set to be B = A sinφ 1 / sin (φ 1 −θ 1 ), the minimum effective area B 2 can also secure the same area A 1 as the receiving device 8. B 2 = Bsin (φ 1 −θ 1 ) = Asin φ 1 = A 1 Thus, since a larger antenna can be installed in a small mounting space, effective reception of the antenna particularly in the y direction is possible. The area can be expanded and the reception condition can be improved.
【００１２】次に図４は、航空機の水平飛行時の姿勢を
示す。水平飛行時には、地上で停止しているときの水平
軸６に対し、数度（θ2 ）ほど機首が上がった状態９と
なる。図１(b) は、移動受信装置設置部分断面図の第２
の実施例を示す。主翼の外壁は、金属板４、および電波
透過性のあるＦＲＰ樹脂板３などの材料で構成されてい
るものが多い。移動受信装置１は、翼の外壁である金属
板４、ＦＲＰ樹脂板３で囲まれた内部に納められる。ま
た移動受信装置１は、回転軸２を中心にして方位角方向
の電波追尾を行なう。航空機が水平飛行の状態では機首
側（ｙ方向）がθ2 上向き９になった姿勢になるので、
この状態で回転軸２が鉛直５になるように、設置時にあ
らかじめ回転軸２を鉛直方向５からθ2 だけｙ方向に傾
けておく。これにより、方位角方向の回転による仰角方
向の変動を抑えることができる。Next, FIG. 4 shows the attitude of the aircraft during horizontal flight. During level flight, the nose is raised by a few degrees (θ 2 ) with respect to the horizontal axis 6 when stopped on the ground. Fig. 1 (b) shows the second section of the mobile receiver installation partial sectional view.
An example of is shown. The outer wall of the main wing is often made of a material such as the metal plate 4 and the FRP resin plate 3 having radio wave transparency. The mobile receiving device 1 is housed inside an outer wall of the wing, which is surrounded by the metal plate 4 and the FRP resin plate 3. The mobile receiver 1 also performs radio wave tracking in the azimuth direction around the rotation axis 2. Since the nose side (y direction) is in the attitude of θ 2 upward 9 when the aircraft is level,
In this state, the rotary shaft 2 is tilted from the vertical direction 5 in the y direction by θ 2 so that the rotary shaft 2 becomes the vertical 5 in this state. As a result, fluctuations in the elevation direction due to rotation in the azimuth direction can be suppressed.
【００１３】図５に、第２の実施例における移動受信装
置の電波受信の説明図を示す。図５(a) は仰角の補正を
行なっていないときの例である。機首をｙ方向とする
と、水平飛行時には機体は図のように水平軸６からθ2
だけ傾くため、アンテナの方位角方向の回転軸２も鉛直
軸５からθ2 だけずれる。アンテナが最大利得となる仰
角は、電波の到来する仰角φ2 と一致するように設定し
てあるが、回転軸２が傾くためにアンテナからみた電波
の到来する仰角は方位角方向の追尾によって変動する。
従って、ｙ方向で−θ2 、−ｙ方向で＋θ2 だけ最大利
得の仰角からずれるので、受信利得が低下する。FIG. 5 is an explanatory diagram of radio wave reception of the mobile receiver in the second embodiment. FIG. 5 (a) is an example when the elevation angle is not corrected. If the nose is in the y direction, the aircraft will fly from the horizontal axis 6 to θ 2 during horizontal flight as shown in the figure.
Since the antenna is tilted only, the rotation axis 2 of the antenna in the azimuth direction also deviates from the vertical axis 5 by θ 2 . The elevation angle at which the antenna has the maximum gain is set so as to match the elevation angle φ 2 at which the radio wave arrives, but the elevation angle at which the radio wave arrives as seen from the antenna changes due to the tracking in the azimuth direction because the rotation axis 2 tilts. To do.
Therefore, since the elevation angle of the maximum gain deviates by −θ 2 in the y direction and + θ 2 in the −y direction, the reception gain decreases.
【００１４】これを補正するために、予め受信装置の方
位角方向の回転軸２をθ2 だけ傾けて設置した列が図５
(b) である。水平飛行時のｙ軸方向の傾きを補正してい
るため、回転軸２と鉛直軸５とが一致し、どの方位角に
おいてもアンテナの最大利得の仰角で電波を受信するこ
とができる。以上２つの実施例をあげ本発明について説
明してきたが、本発明はこれら実施例により限定される
ことなく、特許請求の範囲に記載した要旨内で各種の変
形、変更の可能なことは自明であろう。例えば実施例で
は衛星放送電波の受信を取扱っているが、これは例えば
通信衛星電波の受信に関するものでもよい。In order to correct this, the row in which the rotation axis 2 of the receiving device in the azimuth direction is inclined by θ 2 in advance is shown in FIG.
(b). Since the tilt in the y-axis direction during horizontal flight is corrected, the rotation axis 2 and the vertical axis 5 coincide with each other, and radio waves can be received at the elevation angle of the maximum gain of the antenna in any azimuth angle. Although the present invention has been described above with reference to the two embodiments, it is obvious that the present invention is not limited to these embodiments and that various modifications and changes can be made within the scope of the claims. Let's see For example, although the embodiment deals with reception of satellite broadcast radio waves, this may be related to reception of communication satellite radio waves, for example.
【００１５】[0015]
【発明の効果】衛星放送移動受信装置を航空機の主翼内
部に設置するときには、従来構造上の理由から装置の取
付位置、大きさなどにかなりの制限があった。本発明に
よればこの課題が解決され、少ない取付スペースのなか
でより効率的に放送衛星からの電波を受信できるように
なった。When installing the satellite broadcast mobile receiving device inside the main wing of an aircraft, there have been considerable restrictions on the mounting position and size of the device due to conventional structural reasons. According to the present invention, this problem has been solved, and it becomes possible to more efficiently receive radio waves from a broadcasting satellite in a small mounting space.
【００１６】また、従来衛星放送移動受信装置を航空機
の主翼内部に設置するとき、航空機の地上停止と水平飛
行時の姿勢に違いがあり、それに基づく受信電波の効率
的受信に難があったのを設置時の補正によりこれを解決
している。Further, when the conventional satellite broadcast mobile receiving device is installed inside the main wing of an aircraft, there is a difference in attitude between the aircraft ground stop and level flight, which makes it difficult to receive received radio waves efficiently. This is solved by the correction at the time of installation.
【図１】移動受信装置設置部分の本発明に係る第１の
(a) および第２の(b) 実施例の機体断面図を示す。FIG. 1 shows a first part of a mobile receiver installation part according to the present invention.
The machine body sectional drawing of (a) and 2nd (b) Example is shown.
【図２】本発明に係る移動受信装置の航空機における取
付位置の例を示す。FIG. 2 shows an example of a mounting position of the mobile receiving device according to the present invention in an aircraft.
【図３】第１の実施例における電波受信を説明する図で
ある。FIG. 3 is a diagram illustrating radio wave reception in the first embodiment.
【図４】航空機の水平飛行時の姿勢を示す図である。FIG. 4 is a diagram showing a posture of an aircraft during horizontal flight.
【図５】第２の実施例における電波受信を説明する図
で、(a) は補正のない時、(b) は補正した時の状態を示
す図である。5A and 5B are views for explaining radio wave reception in the second embodiment, where FIG. 5A is a diagram showing a state without correction and FIG. 5B is a diagram showing a state after correction.
１ 移動受信装置 ２ 方位角方向追尾用回転軸 ３ ＦＲＰ樹脂板 ４ 金属板 ５ 鉛直軸 ６ 水平軸 ７ 電波到来仰角方向 ８ 仮想の受信装置 ９ 水平軸からの傾き 10 アンテナの最大利得仰角方向 1 Mobile Receiver 2 Rotation Axis for Tracking Azimuth Direction 3 FRP Resin Plate 4 Metal Plate 5 Vertical Axis 6 Horizontal Axis 7 Radio Wave Arrival Elevation Angle 8 Virtual Receiver 9 Inclination from Horizontal 10 Antenna Maximum Gain Elevation
───────────────────────────────────────────────────── フロントページの続き (72)発明者 外山 昇 東京都世田谷区砧１丁目10番11号 日本放 送協会放送技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noboru Toyama 1-10-11 Kinuta, Setagaya-ku, Tokyo Inside Japan Broadcasting Corporation
Claims (2)
受信アンテナの開口面を大きくとるため、到来衛星電波
を受信する搭載用アレイアンテナの受信面を、該航空機
主翼の電波透過性のある材料で構成された部分の内部で
その外壁面の傾きに合わせ、その方位角方向衛星追尾用
の回転軸を傾けて設置したことを特徴とする航空機搭載
用移動受信装置。1. A mobile receiving device for mounting on an aircraft,
In order to make the aperture of the receiving antenna large, the receiving surface of the on-board array antenna that receives incoming satellite radio waves is adjusted to the inclination of the outer wall surface inside the part of the aircraft wing that is made of radio wave permeable material. A mobile receiving device for mounting on an aircraft, characterized in that the azimuth direction satellite tracking rotation axis is installed with an inclination.
到来衛星電波追尾の仰角方向の変動をおさえるため、該
衛星電波を受信する搭載用アレイアンテナの受信面を、
航空機の水平飛行時の傾きを補正してその主翼内部に設
置するとともに、その方位角方向衛星追尾用の回転軸を
前記補正に基づき鉛直軸から傾けて設置したことを特徴
とする航空機搭載用移動受信装置。2. A mobile receiving device for mounting on an aircraft,
In order to suppress the fluctuation in the elevation angle direction of the incoming satellite radio wave tracking, the receiving surface of the on-board array antenna that receives the satellite radio wave is
An aircraft-mounted movement characterized in that the tilt of the aircraft during horizontal flight is corrected and installed inside its wing, and the rotation axis for tracking the azimuth direction satellite is tilted from the vertical axis based on the correction. Receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23692091A JPH0550991A (en) | 1991-08-26 | 1991-08-26 | Mobile reception apparatus mounted on aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23692091A JPH0550991A (en) | 1991-08-26 | 1991-08-26 | Mobile reception apparatus mounted on aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0550991A true JPH0550991A (en) | 1993-03-02 |
Family
ID=17007710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23692091A Pending JPH0550991A (en) | 1991-08-26 | 1991-08-26 | Mobile reception apparatus mounted on aircraft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0550991A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319104A (en) * | 2017-08-01 | 2019-02-12 | 广州极飞科技有限公司 | A kind of unmanned plane |
-
1991
- 1991-08-26 JP JP23692091A patent/JPH0550991A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319104A (en) * | 2017-08-01 | 2019-02-12 | 广州极飞科技有限公司 | A kind of unmanned plane |
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