JPH0283479A - Method for picking-up satellite with directional antenna - Google Patents
Method for picking-up satellite with directional antennaInfo
- Publication number
- JPH0283479A JPH0283479A JP63234878A JP23487888A JPH0283479A JP H0283479 A JPH0283479 A JP H0283479A JP 63234878 A JP63234878 A JP 63234878A JP 23487888 A JP23487888 A JP 23487888A JP H0283479 A JPH0283479 A JP H0283479A
- Authority
- JP
- Japan
- Prior art keywords
- satellite
- angle
- directional antenna
- antenna
- directional
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000009466 transformation Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000010408 sweeping Methods 0.000 abstract 1
- 230000001131 transforming effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、自動車等の移動物体に搭載されたパラボラア
ンテナ等の指向性アンテナの衛星捕捉方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a satellite acquisition method using a directional antenna such as a parabolic antenna mounted on a moving object such as an automobile.
従来より、この種の衛星捕捉方法として、自動車の向き
を測定し、その測定角によって衛星方向を指示する衛星
指向角を補正し、搭載パラボラアンテナの指向角を衛星
方向へ向けることが行われている。Traditionally, this type of satellite acquisition method has been to measure the orientation of the vehicle, use the measured angle to correct the satellite pointing angle that indicates the satellite direction, and direct the onboard parabolic antenna's pointing angle toward the satellite. There is.
自動車の向きの測定は、通常、磁気コンパスを使用する
か天測によって行うものとしている。The direction of a vehicle is usually measured using a magnetic compass or by astronomical measurements.
しかしながら、磁気コンパスを使用して自動車の向きを
測定する方法を採用した場合、都市内のビルディング等
による磁気の乱れのため、その測定角が不正確になり、
衛星捕捉を精度良く行うことができないという問題があ
る。However, when using a method to measure the direction of a car using a magnetic compass, the measured angle becomes inaccurate due to magnetic disturbances caused by buildings in the city.
There is a problem that satellite acquisition cannot be performed with high precision.
また、天測による方法を採用した場合、特殊技術が必要
であって、衛星捕捉の自動化が行いにくいという問題が
ある。Furthermore, when a method based on astronomical measurements is adopted, special technology is required and there is a problem in that it is difficult to automate satellite acquisition.
本発明はこのような課題を解決するためになされたもの
で、その指向角を自由に変え得る指向性アンテナを搭載
した移動物体の傾斜角を検出し、この検出した傾斜角に
基づいて、衛星指向角を指向性アンテナの座標系に変換
するようになし、衛星からの受信電波の強度を示すＡＧ
Ｃ信号が規定レベルに達するまで、移動物体の向きをパ
ラメータとして前記衛星指向角の座標変換を行い、その
座標変換衛星指向角に向けて指向性アンテナの指向角を
掃引するようにしたものである。The present invention has been made to solve these problems.The present invention detects the inclination angle of a moving object equipped with a directional antenna that can freely change its directivity angle, and based on the detected inclination angle, the satellite AG that converts the directional angle to the coordinate system of the directional antenna and indicates the strength of the radio waves received from the satellite.
Until the C signal reaches a specified level, coordinate transformation of the satellite pointing angle is performed using the direction of the moving object as a parameter, and the pointing angle of the directional antenna is swept toward the coordinate transformed satellite pointing angle. .
したがってこの発明によれば、受信電波の強度を示すＡ
ＧＣ信号が規定レベルに達する座標変換衛星指向角を衛
星捕捉位置と定めて、その衛星捕捉位置に指向性アンテ
ナの指向角が向けられるものとなる。Therefore, according to the present invention, A indicating the strength of received radio waves
The coordinate conversion satellite pointing angle at which the GC signal reaches a specified level is determined as the satellite acquisition position, and the pointing angle of the directional antenna is directed to the satellite acquisition position.
以下、本発明に係る指向性アンテナの衛星捕捉方法を詳
細に説明する。Hereinafter, a satellite acquisition method using a directional antenna according to the present invention will be explained in detail.
図はこの衛星捕捉方法の一実施例を適用してなる衛星捕
捉装置を示すブロック構成図である。同図において、１
はパラボラアンテナ１−１．アンテナ駆動装置１−２等
から構成されてなるパラボラアンテナ部、２はこのパラ
ボラアンテナ部１と共に自動車等の移動物体５に設置さ
れた傾斜角検出器、３はこの傾斜角検出器２の検出する
移動物体５の傾斜角αおよび外部より供与される衛星指
向角βを入力とする座標変換装置、４はパラボラアンテ
ナ部１を介して衛星からの電波を受信し、その受信電波
の強度を示すＡＧＣ信号を出力する受信機である。The figure is a block diagram showing a satellite acquisition device to which an embodiment of this satellite acquisition method is applied. In the same figure, 1
is parabolic antenna 1-1. A parabolic antenna section constituted by an antenna driving device 1-2, etc.; 2 is a tilt angle detector installed on a moving object 5 such as a car together with the parabolic antenna section 1; 3 is a tilt angle detector 2 that detects A coordinate conversion device which inputs the inclination angle α of the moving object 5 and the satellite pointing angle β provided from the outside; 4 is an AGC that receives radio waves from the satellite via the parabolic antenna unit 1 and indicates the intensity of the received radio waves; It is a receiver that outputs a signal.
座標変換装置３は、供与される衛星指向角β（一般には
ＡＺ、ＥＬで入力される）を、傾斜角検出器２を介して
入力される傾斜角αに基づき、パラボラアンテナ部ｌの
座標系に変換し、このパラボラアンテナ部１の座標系に
変換した座標変換衛星指向角をアンテナ駆動角度信号γ
として、アンテナ駆動装置１−２に与える機能を有して
いる。また、座標変換装置３は、受信機４を介して入力
されるＡＧＣ信号を測定し、このＡＧＣ信号が規定のレ
ベルに達した場合、アンテナ駆動装置１−２に対して駆
動停止指令を与える機能をも有している。The coordinate conversion device 3 converts the provided satellite pointing angle β (generally inputted as AZ and EL) into the coordinate system of the parabolic antenna unit l based on the tilt angle α inputted via the tilt angle detector 2. The satellite pointing angle converted into the coordinate system of the parabolic antenna unit 1 is converted into the antenna driving angle signal γ.
It has a function to provide to the antenna driving device 1-2. The coordinate conversion device 3 also has a function of measuring the AGC signal inputted through the receiver 4 and giving a driving stop command to the antenna driving device 1-2 when this AGC signal reaches a specified level. It also has
すなわち、座標変換装置３は、移動物体５の向きを変数
（パラメータ）として可変しつつ、パラボラアンテナ部
１の座標系に対する座標変換衛星指向角を計算し、この
座標変換衛星指向角に向けてラボラアンテナ１−１の指
向角を掃引させるべく、駆動指令（アンテナ駆動角度信
号Ｔ）をアンテナ駆動袋Ｗ１−２へ与える。この駆動指
令に基づくパラボラアンテナ１−１の掃引中に、受信電
波の強度を示すＡＧＣ信号が座標変換装置３において規
定のレベルに達すると、アンテナ駆動装置１−２に対し
て駆動停止指令が発せられ、直ちにパラボラアンテナ１
−１の掃引が停止される。これにより、そのときの座標
変換衛星指向角が衛星捕捉位置と定められ、この衛星捕
捉位置にパラボラアンテナ１−１の指向角が向けられる
ものとなり、その初期捕捉が完了する。That is, the coordinate conversion device 3 calculates the coordinate conversion satellite pointing angle with respect to the coordinate system of the parabolic antenna unit 1 while varying the direction of the moving object 5 as a variable (parameter), and converts the laboratory toward this coordinate conversion satellite pointing angle. In order to sweep the directivity angle of the antenna 1-1, a drive command (antenna drive angle signal T) is given to the antenna drive bag W1-2. During the sweep of the parabolic antenna 1-1 based on this drive command, when the AGC signal indicating the strength of the received radio wave reaches a specified level in the coordinate conversion device 3, a drive stop command is issued to the antenna drive device 1-2. immediately, parabolic antenna 1
-1 sweep is stopped. As a result, the coordinate transformed satellite pointing angle at that time is determined as the satellite acquisition position, the pointing angle of the parabolic antenna 1-1 is directed to this satellite acquisition position, and the initial acquisition is completed.
すなわち、本実施例によれば、自動車の向きを測定する
ことなく衛星捕捉を行うことができ、傾斜角は正確に測
定することが容易であるので、高精度の衛Ｍ浦捉が可能
となり、衛星捕捉の自動化もまた容易に行えるものとな
る。In other words, according to this embodiment, satellite acquisition can be performed without measuring the direction of the vehicle, and since it is easy to accurately measure the tilt angle, highly accurate satellite acquisition is possible. Automating satellite acquisition will also become easier.
なお、本実施例においては、移動物体に搭載するアンテ
ナとしてパラボラアンテナを例にとり説明したが、あら
ゆる種類の指向性アンテナを搭載した場合についても、
同様にして適用可能であることは言うまでもない。In this embodiment, a parabolic antenna was used as an example of an antenna mounted on a moving object, but the same applies to cases where all kinds of directional antennas are mounted.
Needless to say, it can be applied in the same way.
以上説明したように本発明による指向性アンテナの衛星
捕捉方法によると、その指向角を自由に変え得る指向性
アンテナを搭載した移動物体の傾斜角を検出し、この検
出した傾斜角に基づいて、衛星指向角を指向性アンテナ
の座標系に変換するようになし、衛星からの受信電波の
強度を示すＡＧＣ信号が規定レベルに達するまで、移動
物体の向きをパラメータとして前記衛星指向角の座標変
換を行い、その座標変換衛星指向角に向けて指向性アン
テナの指向角を掃引するようにしたので、受信電波の強
度を示すＡＧＣ信号が規定レベルに達する座標変換衛星
指向角を衛星捕捉位置と定めて、その衛星捕捉位置に指
向性アンテナの指向角が向けられるものとなる。すなわ
ち、移動物体の向きを測定することなく衛星捕捉を行う
ことができ、傾斜角は正確に検出することが容易である
ので、高精度の衛星捕捉が可能となり、衛星捕捉の自動
化もまた容易に行えるものとなる。As explained above, according to the satellite acquisition method using a directional antenna according to the present invention, the inclination angle of a moving object equipped with a directional antenna whose directivity angle can be freely changed is detected, and based on the detected inclination angle, The satellite pointing angle is converted into the coordinate system of the directional antenna, and the coordinate conversion of the satellite pointing angle is performed using the direction of the moving object as a parameter until the AGC signal indicating the strength of the received radio wave from the satellite reaches a specified level. The directional angle of the directional antenna is swept toward the coordinate transformed satellite directional angle, so the coordinate transformed satellite directional angle at which the AGC signal indicating the strength of the received radio wave reaches a specified level is determined as the satellite acquisition position. , the directional angle of the directional antenna is directed to the satellite acquisition position. In other words, satellite acquisition can be performed without measuring the orientation of a moving object, and the inclination angle can be easily detected accurately, making highly accurate satellite acquisition possible and automation of satellite acquisition also easy. It becomes something that can be done.
図は本発明に係る指向性アンテナの衛星捕捉方法の一実
施例を適用してなる衛星捕捉装置を示すブロック構成図
である。
ｌ・・・パラボラアンテナ部、２・・・傾斜角検出器、
３・・・座標変換装置、４・・・受信機、５・・・移動
物体。The figure is a block configuration diagram showing a satellite acquisition device to which an embodiment of the satellite acquisition method using a directional antenna according to the present invention is applied. l... Parabolic antenna section, 2... Tilt angle detector,
3... Coordinate conversion device, 4... Receiver, 5... Moving object.
Claims (1)
向性アンテナを搭載した移動物体の傾斜角を検出する傾
斜角検出手段と、この傾斜角検出手段の検出する傾斜角
に基づいて、衛星方向を指示する衛星指向角を前記指向
性アンテナの座標系に変換する座標変換手段とを備え、 衛星からの受信電波の強度を示すＡＧＣ信号が規定レベ
ルに達するまで、前記移動物体の向きをパラメータとし
て前記衛星指向角の座標変換を行い、その座標変換衛星
指向角に向けて前記指向性アンテナの指向角を掃引する
ようにしたことを特徴とする指向性アンテナの衛星捕捉
方法。[Claims] A directional antenna that can freely change its directivity angle, an inclination angle detection means for detecting the inclination angle of a moving object equipped with this directional antenna, and an inclination angle detected by the inclination angle detection means. and a coordinate conversion means for converting a satellite pointing angle indicating the direction of the satellite into a coordinate system of the directional antenna based on the movement of the satellite until an AGC signal indicating the strength of radio waves received from the satellite reaches a specified level. A satellite acquisition method using a directional antenna, characterized in that the coordinate transformation of the satellite pointing angle is performed using the orientation of an object as a parameter, and the pointing angle of the directional antenna is swept toward the coordinate transformed satellite pointing angle. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234878A JPH0283479A (en) | 1988-09-21 | 1988-09-21 | Method for picking-up satellite with directional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234878A JPH0283479A (en) | 1988-09-21 | 1988-09-21 | Method for picking-up satellite with directional antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0283479A true JPH0283479A (en) | 1990-03-23 |
Family
ID=16977740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63234878A Pending JPH0283479A (en) | 1988-09-21 | 1988-09-21 | Method for picking-up satellite with directional antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0283479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223845A (en) * | 1991-03-06 | 1993-06-29 | Japan Radio Co., Ltd. | Array antenna and stabilized antenna system |
-
1988
- 1988-09-21 JP JP63234878A patent/JPH0283479A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223845A (en) * | 1991-03-06 | 1993-06-29 | Japan Radio Co., Ltd. | Array antenna and stabilized antenna system |
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