JPH0799408A - Cross-polarization adjuster for satellite communication earth station antenna - Google Patents
Cross-polarization adjuster for satellite communication earth station antennaInfo
- Publication number
- JPH0799408A JPH0799408A JP26291193A JP26291193A JPH0799408A JP H0799408 A JPH0799408 A JP H0799408A JP 26291193 A JP26291193 A JP 26291193A JP 26291193 A JP26291193 A JP 26291193A JP H0799408 A JPH0799408 A JP H0799408A
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- Prior art keywords
- angle
- switch
- demultiplexer
- polarization
- voltage
- Prior art date
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Abstract
(57)【要約】
【目的】 短時間でかつ容易確実に最良の偏波調整が行
えるようにする。
【構成】 受信局のアンテナ１の分波器２は、偏波角度
を調整するためにアンテナ１との相対角度を可変する機
構を有し、その相対角度は角度検出器３で検出される。
分波器２の水平と垂直の各偏波出力は切替器４を介して
交互に受信機５へ入力する。受信機５は各入力信号（受
信信号）の強度をそれぞれ検出し、その強度に比例した
電圧値を切替器６に出力する。切替器６と切替器４はパ
ルス発生器９から同一のタイミング信号を受け周期的な
切替動作を同期して行う。電圧保持器７の出力電圧はＡ
／Ｄ変換器１０にてディジタル化され、電圧保持器８の
出力電圧はＡ／Ｄ変換器１１にてディジタル化され、計
算機１２へ入力する。計算機１２は、分波器２の２つの
角度値とそれらに対応した２つのＡ／Ｄ変換器の出力と
を受けて、分波器２の偏波に対する電気的偏波角度を算
出する。
(57) [Summary] [Purpose] To enable the best polarization adjustment easily and reliably in a short time. [Structure] The duplexer 2 of the antenna 1 of the receiving station has a mechanism for varying the relative angle with the antenna 1 in order to adjust the polarization angle, and the relative angle is detected by the angle detector 3.
The horizontal and vertical polarization outputs of the demultiplexer 2 are alternately input to the receiver 5 via the switch 4. The receiver 5 detects the intensity of each input signal (received signal) and outputs a voltage value proportional to the intensity to the switch 6. The switch 6 and the switch 4 receive the same timing signal from the pulse generator 9 and perform a periodic switching operation in synchronization. The output voltage of the voltage holder 7 is A
The output voltage of the voltage holder 8 is digitized by the A / D converter 10, digitized by the A / D converter 11, and input to the computer 12. The calculator 12 receives the two angle values of the demultiplexer 2 and the outputs of the two A / D converters corresponding to them, and calculates the electrical polarization angle with respect to the polarization of the demultiplexer 2.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、衛星通信地球局アンテ
ナの交差偏波調整装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross polarization adjusting device for a satellite communication earth station antenna.
【０００２】[0002]
【従来の技術】周知のように、衛星通信では、通信衛星
中継器の周波数帯域の有効利用の観点から直交する２つ
の直線偏波を使用して周波数の多重化を図っている。従
って、通信衛星のアンテナの偏波と衛星通信地球局のア
ンテナの偏波が一致していないと、同一周波数で他方の
偏波を使用している通信との相互干渉が発生するので、
衛星通信地球局アンテナの交差偏波を最適に調整する必
要がある。2. Description of the Related Art As is well known, in satellite communication, two linearly polarized waves orthogonal to each other are used to multiplex frequencies in order to effectively use the frequency band of a communication satellite repeater. Therefore, if the polarization of the antenna of the communication satellite and the polarization of the antenna of the satellite communication earth station do not match, mutual interference with communication using the other polarization at the same frequency occurs,
It is necessary to optimally adjust the cross polarization of the satellite earth antenna.
【０００３】かかる交差偏波調整装置としては、従来、
例えば図５に示すものが知られている。これは「可動地
球局のアンテナ設定装置」として特開平２−１９４３８
１号公報に掲載されているもので、図５は同公報におけ
る第１図を符号のみを変えて示してある。詳細は同公報
を参照してもらうとして要約すれば、この装置は、アン
テナ５１の偏波角度をアンテナ駆動装置５３により連続
的に可変し、その時の偏波角度に対応した受信信号強度
を受信機５２で検出し、それをディスプレィ装置５４に
視覚的に表示して受信信号強度の最大値と最小値とを判
定し、その判定に基づきアンテナ５１の偏波角度を最適
値に調整するようにしたものである。As such a cross polarization adjusting device,
For example, the one shown in FIG. 5 is known. This is disclosed in Japanese Patent Laid-Open No. 19438/1990 as "an antenna setting device for a movable earth station".
5 is shown in FIG. 5 with only the reference numerals changed. For details, refer to the same publication. In this device, the polarization angle of the antenna 51 is continuously changed by the antenna driving device 53, and the reception signal strength corresponding to the polarization angle at that time is received by the receiver. It is detected by 52 and visually displayed on the display device 54 to determine the maximum value and the minimum value of the received signal strength, and the polarization angle of the antenna 51 is adjusted to the optimum value based on the determination. It is a thing.
【０００４】[0004]
【発明が解決しようとする課題】上述した従来の衛星通
信地球局アンテナの交差偏波調整装置たる「可動地球局
のアンテナ設定装置」では、受信信号強度の最大値と最
小値とを視覚的に直接判定するためにはアンテナの偏波
角度を連続的に広範囲に渡って回転させる必要があるの
で、アンテナの偏波角度の駆動に多くの時間を要し、迅
速性に欠けるという問題がある。In the above-mentioned "cross-polarization adjusting device for a satellite communication earth station antenna", which is an "antenna setting device for a movable earth station", the maximum and minimum values of the received signal strength are visually determined. Since it is necessary to continuously rotate the polarization angle of the antenna over a wide range for direct determination, it takes a lot of time to drive the polarization angle of the antenna, and there is a problem that it is not swift.
【０００５】また、受信信号強度の最大値付近では変化
率は緩やかなものであるので、視覚による直接的な判断
では個人差を生じ正確を期すことは困難である一方、受
信信号強度の最小値付近では受信そのものが不安定ある
いは不可能になるので判断が困難になるという問題もあ
る。Further, since the rate of change is gradual near the maximum value of the received signal strength, it is difficult to make an individual difference by direct visual judgment, but it is difficult to ensure accuracy, while the minimum value of the received signal strength is small. There is also a problem that the judgment itself becomes difficult because reception itself becomes unstable or impossible in the vicinity.
【０００６】本発明は、このような問題に鑑みなされた
もので、その目的は、簡便かつ迅速に最適値への設定を
可能にする衛星通信地球局アンテナの交差偏波調整装置
を提供することにある。The present invention has been made in view of such a problem, and an object thereof is to provide a cross polarization adjusting device for a satellite communication earth station antenna which enables setting to an optimum value simply and quickly. It is in.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するた
め、本発明の衛星通信地球局アンテナの交差偏波調整装
置は次の如き構成を有する。即ち、第１発明の衛星通信
地球局アンテナの交差偏波調整装置は、水平と垂直の偏
波出力端を有し衛星電波を受けるアンテナとの相対角度
を可変する機構を備える分波器と； 前記分波器の水平
と垂直の偏波出力を交互に選択する第１切替器と； 前
記第１切替器の出力を受けて信号強度検出を行う受信機
と； 前記受信機の信号強度検出電圧を２系統に交互に
分配する第２切替器と； 前記第１切替器と前記第２切
替器に切替動作を同期して行わせるタイミング信号を発
生するパルス発生器と； 前記第２切替器の一方の出力
を保持する第１電圧保持器及びその保持電圧値をディジ
タル化する第１Ａ／Ｄ変換器と； 前記第２切替器の他
方の出力を保持する第２電圧保持器及びその保持電圧値
をディジタル化する第２Ａ／Ｄ変換器と； 前記分波器
の２つの角度値とそれらに対応した前記２つのＡ／Ｄ変
換器の出力とを受けて前記分波器の偏波に対する電気的
偏波角度を算出する計算機と； を備えたことを特徴と
するものである。In order to achieve the above object, the cross polarization adjusting device for a satellite communication earth station antenna of the present invention has the following structure. That is, the cross polarization adjusting device for a satellite communication earth station antenna according to the first aspect of the present invention is a duplexer having a mechanism for varying the relative angle with respect to an antenna having horizontal and vertical polarization output terminals and receiving satellite radio waves; A first switching device that alternately selects horizontal and vertical polarization outputs of the demultiplexer; a receiver that receives the output of the first switching device and detects signal strength; a signal strength detection voltage of the receiver A second switching device that alternately distributes to two systems; a pulse generator that generates a timing signal that causes the first switching device and the second switching device to perform a switching operation in synchronization; A first voltage holder for holding one output and a first A / D converter for digitizing the holding voltage value; a second voltage holder for holding the other output of the second switch and its holding voltage value A second A / D converter for digitizing A calculator that receives two angle values and the outputs of the two A / D converters corresponding to them, and calculates an electrical polarization angle with respect to the polarization of the demultiplexer; It is a thing.
【０００８】また、第２発明の衛星通信地球局アンテナ
の交差偏波調整装置は、水平と垂直の偏波出力端を有し
衛星電波を受けるアンテナとの相対角度を可変する機構
を備える分波器と； 前記分波器の水平と垂直の偏波出
力を交互に選択する第１切替器と； 前記第１切替器の
出力を受けて信号強度検出を行う受信機と； 前記受信
機の信号強度検出電圧を２系統に交互に分配する第２切
替器と； 前記第１切替器と前記第２切替器に切替動作
を同期して行わせるタイミング信号を発生するパルス発
生器と； 前記第２切替器の対応する出力を保持する２
つの電圧保持器と； 前記分波器の角度を変化させて得
られる前記２つの電圧保持器の電圧値を逐一比較し２つ
の一致点を検出する比較器と； を備えたことを特徴と
するものである。The cross polarization adjusting device for a satellite communication earth station antenna according to the second aspect of the present invention is a demultiplexer having a mechanism for varying the relative angle with respect to an antenna having horizontal and vertical polarization output terminals and receiving satellite radio waves. A first switch that alternately selects horizontal and vertical polarization outputs of the demultiplexer; a receiver that receives the output of the first switch to detect signal strength; a signal of the receiver A second switcher that alternately distributes the intensity detection voltage to two systems; a pulse generator that generates a timing signal that causes the first switcher and the second switcher to perform a switching operation in synchronization; Holds the corresponding output of the switch 2
Two voltage holders; and a comparator that compares the voltage values of the two voltage holders obtained by changing the angle of the demultiplexer one by one to detect two coincidence points; It is a thing.
【０００９】[0009]
【作用】次に、前記の如く構成される本発明の衛星通信
地球局アンテナの交差偏波調整装置の作用を説明する。
第１発明では、任意の２点の偏波角度で測定した受信信
号強度に基づき分波器の偏波に対する電気的偏波角度を
算出し、また第２発明では、判定容易な信号強度の２つ
の一致点を検出し、それにより偏波角度を最適に調整で
きる。Next, the operation of the cross polarization adjusting device for the satellite communication earth station antenna of the present invention constructed as described above will be explained.
In the first invention, the electrical polarization angle with respect to the polarization of the demultiplexer is calculated based on the received signal strength measured at the polarization angles of two arbitrary points, and in the second invention, the 2 Detects two coincident points, which allows the polarization angle to be optimally adjusted.
【００１０】従って、本発明によれば、従来よりも短時
間で、かつ、容易確実に交差偏波の最適設定が可能であ
る。また、原理的に受信信号強度の最大値や最低値を用
いる必要がなく、個人差や判定困難等の従来の問題点を
回避できる。Therefore, according to the present invention, the optimum setting of the cross polarization can be performed easily and surely in a shorter time than in the past. Further, in principle, it is not necessary to use the maximum value or the minimum value of the received signal strength, and it is possible to avoid the conventional problems such as individual difference and difficulty of determination.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１は、本発明の一実施例に係る衛星通信地球局
アンテナの交差偏波調整装置を示す。図１において、受
信局のアンテナ１の分波器２は、偏波角度を調整するた
めにアンテナ１との相対角度を可変する機構を有し、そ
の相対角度を検出する角度検出器３が設けられる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross polarization adjusting device for a satellite communication earth station antenna according to an embodiment of the present invention. In FIG. 1, the demultiplexer 2 of the antenna 1 of the receiving station has a mechanism for varying the relative angle with the antenna 1 in order to adjust the polarization angle, and the angle detector 3 for detecting the relative angle is provided. To be
【００１２】また、分波器２は、水平と垂直の偏波出力
端を有し、各出力は（第１）切替器４を介して交互に受
信機５へ入力する。Further, the demultiplexer 2 has horizontal and vertical polarization output terminals, and the respective outputs are alternately input to the receiver 5 via the (first) switch 4.
【００１３】受信機５は、各入力信号（受信信号）の強
度をそれぞれ検出し、その強度に比例した電圧値を（第
２）切替器６に出力する。The receiver 5 detects the intensity of each input signal (received signal) and outputs a voltage value proportional to the intensity to the (second) switch 6.
【００１４】切替器６は、切替器４と共にパルス発生器
９から同一のタイミング信号を受け周期的な切替動作を
同期して行う。従って、例えば水平偏波の受信信号の検
出電圧値が（第１）電圧保持器７に保持され、また垂直
偏波の受信信号の検出電圧値が（第２）電圧保持器８に
保持される。The switch 6 receives the same timing signal from the pulse generator 9 together with the switch 4 and performs a periodic switching operation in synchronization. Therefore, for example, the detected voltage value of the horizontally polarized received signal is held in the (first) voltage holder 7, and the detected voltage value of the vertically polarized received signal is held in the (second) voltage holder 8. .
【００１５】２つの電圧保持器は、それぞれ、切替器６
の周期的な切り替えに対し対応するＡ／Ｄ変換器の入力
電圧が変動するのを防止している。The two voltage holders are the switch 6 respectively.
The input voltage of the corresponding A / D converter is prevented from fluctuating with respect to the periodical switching of.
【００１６】電圧保持器７の保持出力電圧は、（第１）
Ａ／Ｄ変換器１０にてディジタル化され、電圧保持器８
の保持出力電圧は、（第２）Ａ／Ｄ変換器１１にてディ
ジタル化され、それぞれ、計算機１２へ入力する。The holding output voltage of the voltage holder 7 is (first)
It is digitized by the A / D converter 10, and the voltage holder 8
The held output voltage of 1 is digitized by the (second) A / D converter 11 and input to the computer 12.
【００１７】計算機１２は、分波器２の２つの角度値と
それらに対応した前記２つのＡ／Ｄ変換器の出力とを受
けて、分波器２の偏波に対する電気的偏波角度を算出す
る。以下、図２を参照して具体的に説明する。The computer 12 receives the two angle values of the demultiplexer 2 and the outputs of the two A / D converters corresponding to them, and calculates the electrical polarization angle with respect to the polarized wave of the demultiplexer 2. calculate. Hereinafter, a specific description will be given with reference to FIG.
【００１８】図２において、曲線ａと同ｂは、偏波角度
に対する分波器２の垂直と水平の偏波出力の強度（相対
値）を表しているが、直線偏波の性質から、それぞれ正
弦波状と余弦波状に変化する。通信衛星のアンテナの指
向方向と衛星通信地球局のアンテナの指向方向とが一致
した場合は、曲線ａと同ｂの最大値は同一レベルとなる
が、各指向方向がずれている場合は、図示するように最
大値は異なったものとなる。つまり、指向方向がずれて
いる一般的な場合を例に説明する。In FIG. 2, curves a and b represent the intensities (relative values) of the vertical and horizontal polarized wave outputs of the demultiplexer 2 with respect to the polarization angle. It changes into a sine wave and a cosine wave. When the directional direction of the antenna of the communication satellite and the directional direction of the antenna of the satellite communication earth station are the same, the maximum values of the curves a and b are at the same level, but when the directional directions are different, So the maximum value will be different. That is, a general case where the pointing direction is deviated will be described as an example.
【００１９】まず、分波器２の物理的な角度を任意の角
度点Ａに設定する。Ａ点におけるアンテナ１と分波器２
の物理的な相対角度が角度検出器３で読み取られ、計算
機１２へ入力している。First, the physical angle of the duplexer 2 is set at an arbitrary angle point A. Antenna 1 and duplexer 2 at point A
The physical relative angle of is read by the angle detector 3 and is input to the computer 12.
【００２０】計算機１２は、次のようにして偏波に対す
る電気的な偏波角度（θとする）を算出する。Ａ点での
各信号強度（Ｓ1 、Ｓ2 ）は、Ａ／Ｄ変換器（１０、１
１）から入力するので、計算機１２は、Ｓ1 とＳ2 の比
（ＳA ）を計算する。偏波角度θと信号強度（Ｓ1 、Ｓ
2 ）の関係は、曲線ａと同ｂがそれぞれ正弦波と余弦波
であることから式１で示される。但し、式１において、
ｋは係数である。The computer 12 calculates the electrical polarization angle (designated as θ) with respect to the polarization as follows. The signal strengths (S 1 , S 2 ) at point A are calculated by the A / D converter (10, 1 ).
Since it is input from 1), the calculator 12 calculates the ratio (S A ) of S 1 and S 2 . Polarization angle θ and signal strength (S 1 , S
The relationship of 2 ) is expressed by Equation 1 because the curves a and b are sine wave and cosine wave, respectively. However, in Equation 1,
k is a coefficient.
【００２１】[0021]
【数１】 [Equation 1]
【００２２】次に、分波器２の物理的な角度をＡ点から
既知の角度φだけ回転させる。その点をＢ点とする。Ａ
点と同様に各信号強度（Ｓ3 、Ｓ4 ）はディジタル化さ
れて計算機１２へ入力する。計算機１２は同様にＳ3 と
Ｓ4 の比（ＳB ）を計算する。θ及びφとＳ3 及びＳ4
の関係は、同様に式２で示される。Next, the physical angle of the demultiplexer 2 is rotated from the point A by a known angle φ. Let that point be point B. A
Similar to the point, each signal strength (S 3 , S 4 ) is digitized and input to the computer 12. Calculator 12 similarly calculates the ratio of S 3 and S 4 (S B ). θ and φ and S 3 and S 4
The relationship of is similarly expressed by Equation 2.
【００２３】[0023]
【数２】 [Equation 2]
【００２４】式１と式２において係数ｋと偏波角度θが
未知数であるので、式１と式２を連立方程式としてθに
ついて解く。式１を係数ｋについて変形し（式３）、式
３を式２に代入して式４を得、この式４をtan(θ）につ
いての２次方程式に変形する（式５）。Since the coefficient k and the polarization angle θ are unknowns in the equations 1 and 2, the equations 1 and 2 are used as simultaneous equations to solve for θ. Equation 1 is transformed with respect to the coefficient k (Equation 3), Equation 3 is substituted into Equation 2 to obtain Equation 4, and this Equation 4 is transformed into a quadratic equation for tan (θ) (Equation 5).
【００２５】[0025]
【数３】 [Equation 3]
【００２６】[0026]
【数４】 [Equation 4]
【００２７】[0027]
【数５】 [Equation 5]
【００２８】式５においてtan(θ）以外は既知であるの
で、式５をtan(θ）について解くことができる。従っ
て、２次方程式の根の公式より、tan(θ）は式６とな
る。Since equations 5 other than tan (θ) are known, equation 5 can be solved for tan (θ). Therefore, from the formula of the root of the quadratic equation, tan (θ) becomes Equation 6.
【００２９】[0029]
【数６】 [Equation 6]
【００３０】但し、式６において、ｂ＝tan(φ）＋ＳA
・ＳB ・tan(φ）である。また、２つの根のうち符号が
正のものをtan(θ）の根とする。However, in the equation 6, b = tan (φ) + S A
・ S B・ tan (φ) The positive sign of the two roots is the root of tan (θ).
【００３１】計算機１２は、ＳA ，ＳB 及びφを基に式
６を計算し、求めたtan(θ）から逆正接の計算を行い、
θを求める。The computer 12 calculates the equation 6 based on S A , S B and φ, and calculates the arc tangent from the obtained tan (θ),
Find θ.
【００３２】以上の計算によりＡ点での電気的な偏波角
度θが算出され、アンテナ１と分波器２の物理的な相対
角度と偏波角度との対比ができる。最適な偏波角度はθ
が９０度であるので、Ａ点から（９０−θ）度だけ回転
させれば良い。この回転操作は手動でも良く、自動的に
行えるようにしても良い。The electrical polarization angle θ at point A is calculated by the above calculation, and the physical relative angle between the antenna 1 and the duplexer 2 and the polarization angle can be compared. The optimum polarization angle is θ
Is 90 degrees, it may be rotated by (90−θ) degrees from the point A. This rotation operation may be performed manually or automatically.
【００３３】即ち、例えば、計算機１２が算出した偏波
角度を基準にその偏波角度が９０°となる角度位置に角
度検出器３の出力を監視しながら分波器２を駆動設定す
る駆動装置を設けるのである。That is, for example, a drive device for driving and setting the demultiplexer 2 while monitoring the output of the angle detector 3 at an angular position where the polarization angle calculated by the computer 12 is 90 ° with reference to the polarization angle. Is provided.
【００３４】このように、任意のＡ点とＡ点からφ度回
転したＢ点の２点で信号強度を測定して所要の計算を実
行すれば最適点に偏波角度を設定できるのであり、従来
よりも短時間で交差偏波の最適設定が可能である。ま
た、原理的に受信信号強度の最大値や最低値を計算に用
いる必要がなく、個人差や判定困難等の従来の問題点を
回避できる。In this way, the polarization angle can be set at the optimum point by measuring the signal strength at two points, the arbitrary point A and the point B rotated by φ degrees from the point A, and executing the required calculation. Optimal setting of cross polarization is possible in a shorter time than before. Further, in principle, it is not necessary to use the maximum value and the minimum value of the received signal strength for the calculation, and it is possible to avoid the conventional problems such as individual differences and determination difficulty.
【００３５】次に、図３は、本発明の他の実施例に係る
衛星通信地球局アンテナの交差偏波調整装置を示す。こ
の第２実施例では、第１実施例と同様に７と８の電圧保
持器に受信信号強度電圧を保持し、比較器１３にて両者
の強度を比較し一致点を判定する。以下、図４を参照し
て具体的に説明する。Next, FIG. 3 shows a cross polarization adjusting device for a satellite communication earth station antenna according to another embodiment of the present invention. In the second embodiment, the received signal strength voltage is held in the voltage holders 7 and 8 as in the first embodiment, and the comparator 13 compares the strengths of the two to determine the coincidence point. Hereinafter, a specific description will be given with reference to FIG.
【００３６】図４は、分波器２の角度に対する垂直と水
平の偏波出力強度（相対値）の変化を示したものであ
る。各出力は正弦波状と余弦波状に変化する。分波器２
を回して行くと、１８０度の範囲内で、図４に示すよう
にＣ点とＤ点において垂直偏波と水平偏波の信号強度の
一致点を比較器１３の判定によって見い出すことができ
る。FIG. 4 shows changes in the vertical and horizontal polarization output intensities (relative values) with respect to the angle of the demultiplexer 2. Each output changes like a sine wave and a cosine wave. Duplexer 2
By turning, it is possible to find the coincidence point of the signal intensities of the vertically polarized wave and the horizontally polarized wave at the points C and D within the range of 180 degrees by the judgment of the comparator 13, as shown in FIG.
【００３７】これら２点の中間点は、垂直偏波、あるい
は、水平偏波の信号強度の最大となる点、即ち、偏波角
度の最良調整点である。中間点は、Ｃ点とＤ点の角度を
分波器２の回転機構に備えられた目盛りで読み取れば容
易に算出できる。The midpoint between these two points is the point at which the signal intensity of vertical polarization or horizontal polarization becomes maximum, that is, the best adjustment point of the polarization angle. The intermediate point can be easily calculated by reading the angle between the point C and the point D with a scale provided on the rotation mechanism of the duplexer 2.
【００３８】但し、Ｃ点とＤ点の中間点は、受信局に割
り当てられた偏波と交差関係にある場合は、中間点から
９０度回転した点がその受信局での最良点である。However, the midpoint between the points C and D is the best point at the receiving station when it is 90 degrees rotated from the midpoint when it has a cross relationship with the polarized waves assigned to the receiving station.
【００３９】このように、第２実施例においても、一致
点を判定するという簡単かつ確実な動作により、容易に
最良点を求めることができる。As described above, also in the second embodiment, the best point can be easily obtained by the simple and reliable operation of determining the coincidence point.
【００４０】なお、この第２実施例においても自動化が
可能である。即ち、図３の基本構成では図示省略した
が、分波器２は図１に示したように通常角度検出器３を
備えるが、無い場合は図１に示したように角度検出器３
を設け、その角度検出器３の出力を監視しながら比較器
１３が検出した２つの一致点にそれぞれ対応する２つの
角度値の中間の角度位置に分波器２を駆動設定する駆動
装置を設けるのである。It should be noted that the second embodiment can also be automated. That is, although not shown in the basic configuration of FIG. 3, the demultiplexer 2 includes the normal angle detector 3 as shown in FIG. 1, but if it is not provided, the angle detector 3 as shown in FIG.
And a drive device for driving and setting the demultiplexer 2 at an intermediate angular position between two angle values respectively corresponding to the two coincidence points detected by the comparator 13 while monitoring the output of the angle detector 3. Of.
【００４１】[0041]
【発明の効果】以上説明したように、本発明の衛星通信
地球局アンテナの交差偏波調整装置では、任意の２点の
偏波角度で測定した受信信号強度に基づき電気的偏波角
度を計算する、または信号強度が一致する２点を求める
ようにしたので、従来よりも短時間でかつ容易確実に交
差偏波の最適設定が可能である。また、原理的に受信信
号強度の最大値や最低値を用いる必要がなく、個人差や
判定困難等の従来の問題点を回避できる効果がある。ま
た、自動化が可能であるという効果もある。As described above, in the cross polarization adjusting device for the satellite communication earth station antenna of the present invention, the electrical polarization angle is calculated based on the received signal strength measured at the polarization angles of two arbitrary points. Or the two points where the signal intensities are the same are obtained, so that the optimum setting of cross polarization can be performed easily and reliably in a shorter time than in the past. Further, in principle, it is not necessary to use the maximum value and the minimum value of the received signal strength, and it is possible to avoid the conventional problems such as individual differences and determination difficulty. In addition, there is an effect that automation can be performed.
【図１】本発明の一実施例に係る衛星通信地球局アンテ
ナの交差偏波調整装置の構成ブロック図である。FIG. 1 is a configuration block diagram of a cross polarization adjusting device for a satellite communication earth station antenna according to an embodiment of the present invention.
【図２】電気的偏波角度θの算出過程の説明図である。FIG. 2 is an explanatory diagram of a process of calculating an electric polarization angle θ.
【図３】本発明の他の実施例に係る衛星通信地球局アン
テナの交差偏波調整装置の構成ブロック図である。FIG. 3 is a configuration block diagram of a cross polarization adjusting device for a satellite communication earth station antenna according to another embodiment of the present invention.
【図４】垂直偏波と水平偏波の信号強度が一致する２点
の判定動作の説明図である。FIG. 4 is an explanatory diagram of a determination operation at two points where the signal intensities of vertically polarized waves and horizontally polarized waves match.
【図５】従来の衛星通信地球局アンテナの交差偏波調整
装置（可動地球局のアンテナ設定装置）の構成ブロック
図である。FIG. 5 is a configuration block diagram of a conventional cross polarization adjusting device for a satellite communication earth station antenna (antenna setting device for a movable earth station).
１ アンテナ ２ 分波器 ３ 角度検出器 ４，６ 切替器 ５ 受信機 ７，８ 電圧保持器 ９ パルス発生器 １０，１１ Ａ／Ｄ変換器 １２ 計算機 １３ 比較器 1 Antenna 2 Demultiplexer 3 Angle Detector 4,6 Switcher 5 Receiver 7,8 Voltage Holder 9 Pulse Generator 10,11 A / D Converter 12 Computer 13 Comparator
Claims (4)
を受けるアンテナとの相対角度を可変する機構を備える
分波器と； 前記分波器の水平と垂直の偏波出力を交互
に選択する第１切替器と； 前記第１切替器の出力を受
けて信号強度検出を行う受信機と； 前記受信機の信号
強度検出電圧を２系統に交互に分配する第２切替器と；
前記第１切替器と前記第２切替器に切替動作を同期し
て行わせるタイミング信号を発生するパルス発生器と；
前記第２切替器の一方の出力を保持する第１電圧保持
器及びその保持電圧値をディジタル化する第１Ａ／Ｄ変
換器と； 前記第２切替器の他方の出力を保持する第２
電圧保持器及びその保持電圧値をディジタル化する第２
Ａ／Ｄ変換器と； 前記分波器の２つの角度値とそれら
に対応した前記２つのＡ／Ｄ変換器の出力とを受けて前
記分波器の偏波に対する電気的偏波角度を算出する計算
機と； を備えたことを特徴とする衛星通信地球局アン
テナの交差偏波調整装置。1. A demultiplexer having a horizontal and vertical polarized wave output end and having a mechanism for varying a relative angle with respect to an antenna for receiving a satellite radio wave; a horizontal and vertical polarized wave output of the demultiplexer being alternated. A first switch for selecting the signal strength, a receiver for receiving the output of the first switch for signal strength detection, and a second switch for alternately distributing the signal strength detection voltage of the receiver into two systems.
A pulse generator that generates a timing signal that causes the first switch and the second switch to perform a switching operation in synchronization;
A first voltage holder that holds one output of the second switch and a first A / D converter that digitizes the held voltage value; a second that holds the other output of the second switch
Second voltage holding device and digitizing the holding voltage value
An A / D converter; calculating an electrical polarization angle with respect to a polarization of the demultiplexer by receiving two angle values of the demultiplexer and outputs of the two A / D converters corresponding to them A cross-polarization adjusting device for a satellite communication earth station antenna, characterized by comprising:
ナの交差偏波調整装置において； 前記分波器の角度を
測定する角度検出器と； 前記計算機が算出した偏波角
度を基準にその偏波角度が９０°となる角度位置に前記
角度検出器の出力を監視しながら前記分波器を駆動設定
する駆動装置； を備えることを特徴とする衛星通信地
球局アンテナの交差偏波調整装置。2. The cross-polarization adjusting device for a satellite communication earth station antenna according to claim 1, an angle detector for measuring an angle of the demultiplexer, and a polarization angle calculated by the computer as a reference. A cross-polarization adjusting device for a satellite communication earth station antenna, comprising: a driving device for driving and setting the demultiplexer while monitoring the output of the angle detector at an angular position where the polarization angle is 90 °. .
を受けるアンテナとの相対角度を可変する機構を備える
分波器と； 前記分波器の水平と垂直の偏波出力を交互
に選択する第１切替器と； 前記第１切替器の出力を受
けて信号強度検出を行う受信機と； 前記受信機の信号
強度検出電圧を２系統に交互に分配する第２切替器と；
前記第１切替器と前記第２切替器に切替動作を同期し
て行わせるタイミング信号を発生するパルス発生器と；
前記第２切替器の対応する出力を保持する２つの電圧
保持器と； 前記分波器の角度を変化させて得られる前
記２つの電圧保持器の電圧値を逐一比較し２つの一致点
を検出する比較器と；を備えたことを特徴とする衛星通
信地球局アンテナの交差偏波調整装置。3. A demultiplexer having a horizontal and vertical polarized wave output end and having a mechanism for changing a relative angle with respect to an antenna for receiving a satellite radio wave; a horizontal and vertical polarized wave output of the demultiplexer being alternated. A first switch for selecting the signal strength, a receiver for receiving the output of the first switch for signal strength detection, and a second switch for alternately distributing the signal strength detection voltage of the receiver into two systems.
A pulse generator that generates a timing signal that causes the first switch and the second switch to perform a switching operation in synchronization;
Two voltage holders that hold the corresponding outputs of the second switch; and two coincident points are detected by comparing the voltage values of the two voltage holders obtained by changing the angle of the demultiplexer one by one. A cross-polarization adjusting device for a satellite communication earth station antenna, comprising:
ナの交差偏波調整装置において； 前記偏波器の角度を
測定する角度検出器と； 前記角度検出器の出力を監視
しながら前記比較器が検出した２つの一致点にそれぞれ
対応する２つの角度値の中間の角度位置に前記分波器を
駆動設定する駆動装置と； を備えたことを特徴とする
衛星通信地球局アンテナの交差偏波調整装置。4. The cross polarization adjusting device for a satellite communication earth station antenna according to claim 3, an angle detector for measuring an angle of the polarizer, and the comparison while monitoring an output of the angle detector. A driving device for driving and setting the demultiplexer at an angular position intermediate between two angle values respectively corresponding to two coincidence points detected by the demultiplexer; and a cross polarization of a satellite communication earth station antenna, comprising: Wave conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26291193A JP2590706B2 (en) | 1993-09-27 | 1993-09-27 | Cross-polarization adjusting device for satellite earth station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26291193A JP2590706B2 (en) | 1993-09-27 | 1993-09-27 | Cross-polarization adjusting device for satellite earth station antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0799408A true JPH0799408A (en) | 1995-04-11 |
| JP2590706B2 JP2590706B2 (en) | 1997-03-12 |
Family
ID=17382325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26291193A Expired - Lifetime JP2590706B2 (en) | 1993-09-27 | 1993-09-27 | Cross-polarization adjusting device for satellite earth station antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2590706B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013005277A (en) * | 2011-06-17 | 2013-01-07 | Mitsubishi Electric Corp | Antenna polarization angle error calculation method and antenna polarization angle control device |
| JPWO2021199452A1 (en) * | 2020-03-30 | 2021-10-07 |
-
1993
- 1993-09-27 JP JP26291193A patent/JP2590706B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013005277A (en) * | 2011-06-17 | 2013-01-07 | Mitsubishi Electric Corp | Antenna polarization angle error calculation method and antenna polarization angle control device |
| JPWO2021199452A1 (en) * | 2020-03-30 | 2021-10-07 | ||
| WO2021199452A1 (en) * | 2020-03-30 | 2021-10-07 | 日本電信電話株式会社 | Transmission radio wave confirmation method, portable station device, and transmission radio wave confirmation program in satellite communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2590706B2 (en) | 1997-03-12 |
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