JPS63144275A - Azimuth measuring instrument - Google Patents
Azimuth measuring instrumentInfo
- Publication number
- JPS63144275A JPS63144275A JP29313186A JP29313186A JPS63144275A JP S63144275 A JPS63144275 A JP S63144275A JP 29313186 A JP29313186 A JP 29313186A JP 29313186 A JP29313186 A JP 29313186A JP S63144275 A JPS63144275 A JP S63144275A
- Authority
- JP
- Japan
- Prior art keywords
- amplitude
- azimuth
- circuit
- outputs
- maximum
- 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
- 238000012935 Averaging Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は到来電波の方位を検出する装置技術に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a device technique for detecting the direction of incoming radio waves.
従来の方位測定装置は、例えば第２図に示すようにある
方位角範囲に等間隔で配置した指向性空中線１ａ、 １
ｂ・・・１ｎと、この指向性空中線対応毎にもうけた対
数増幅検波特性を有する受信機２ａ、２ｂ・・・・・・
２ｎと、この各受信機の出力を入力しこの中から最大振
幅を有するチャンネルを選び出しそのチャンネル番号と
振幅値を出力する第１の選択回路３と、この第１の選択
回路が出力する最大振幅チャンネル番号と前記各受信機
出力を入力し、まず最大振幅チャンネルの両側のチャン
ネルの受信機出力を選択し、次にこの選択された両側の
振幅値を比較し大きい方を第２振幅としてチャンネル番
号と振幅値を出力する第２の選択回路４と、第１及び第
２の選択回路が出力するチャンネル番号及び振幅を入力
し、チャンネル番号と互いの振幅差から方位を求める第
１の角度演算回路５とを有する構成となっていた。A conventional azimuth measuring device uses, for example, directional antennas 1a, 1 arranged at equal intervals in a certain azimuth angle range, as shown in FIG.
b...1n, and receivers 2a and 2b having logarithmic amplification and detection characteristics for each directional antenna.
2n, a first selection circuit 3 which inputs the output of each receiver, selects the channel with the maximum amplitude from among them, and outputs its channel number and amplitude value, and the maximum amplitude outputted by this first selection circuit. Input the channel number and each receiver output, first select the receiver outputs of the channels on both sides of the maximum amplitude channel, then compare the selected amplitude values on both sides and set the larger one as the second amplitude and set the channel number. a second selection circuit 4 which outputs the amplitude value and a first angle calculation circuit which inputs the channel number and amplitude outputted by the first and second selection circuits and calculates the direction from the channel number and the mutual amplitude difference. 5.
上述した従来の方位測定装置は、最大振幅を出力するチ
ャンネルと第２ＷＲ幅を出力するチャンネルの振幅比が
角度によって一礪的に決定されることを利用しているた
め周波数等が変化すること釦より各々の指向性空中線の
ビーム幅が変化すると、角度に対する振幅比の特性忙ず
れが生じ、演算された角度に誤差が生じてしまうという
欠点があった。The conventional direction measuring device described above utilizes the fact that the amplitude ratio of the channel that outputs the maximum amplitude and the channel that outputs the second WR width is determined entirely by the angle, so it is difficult to change the frequency etc. If the beam width of each directional antenna changes, the characteristics of the amplitude ratio with respect to the angle will vary, resulting in an error in the calculated angle.
本発明の方位測定装置は、ある方位角範囲に等間隔で配
置した指向性空中Ｍｌａ、ｌｂ・・・１ｎと、この指向
性空中線対応毎にもうけた対数増幅検波特性を有する受
信機２ａ、 ２ｂ・・・２ｎと、この各受信機の出力の
中から最大振幅となるビームを選び出しその機幅を第１
の機幅として出力する第１の選択回路と、最大振幅とな
るビームの両側のビームのうち大きい方を第２の振幅と
して、さらに小さい方を第３の機幅としてそれぞれ選択
し出力する第２の選択回路と、第１及び第２の選択回路
で得られる第１及び第２の機幅値の比較から方位を求め
る第１の角度演算回路と、第２の選択回路で得られる第
２及び第３の機幅値の比較から方位を求める第２の角度
演算回路と、第１と第２の角度演算回路が出力するそれ
ぞれの方位を入力しこの平均を求め方位として出力する
平均回路とを有する。The azimuth measuring device of the present invention includes directional aerial Mla, lb...1n arranged at equal intervals in a certain azimuth angle range, and receivers 2a, 2b having logarithmic amplification and detection characteristics corresponding to each directional antenna. ...2n, select the beam with the maximum amplitude from the output of each receiver, and set its width to the first
A first selection circuit outputs the width as the width of the beam, and a second selection circuit selects and outputs the larger one of the beams on both sides of the beam with the maximum amplitude as the second amplitude, and the smaller one as the third width. a first angle calculation circuit that calculates the bearing from a comparison of the first and second aircraft width values obtained by the first and second selection circuits; A second angle calculation circuit that calculates the bearing from a comparison of the third aircraft width value, and an averaging circuit that inputs the respective bearings output from the first and second angle calculation circuits, calculates the average of these, and outputs it as the bearing. have
次に１本発明について図面を参照して説明する。 Next, one embodiment of the present invention will be explained with reference to the drawings.
第１図は本発明の構成例を示したものである。ある方位
角範囲に約等間隔で並べられる指向性空中＋１９１ａ、
ｌｂ・・・１ｎの出力は、対数増幅検波特性を有する受
信機２ａ、２ｂ・・・２ｎＫよってそれぞれ振幅出力に
変換され、この出力から第１の選択回路３は、最大振幅
となるビームを第１の振幅として選択し、さらに第２の
選択回路４によって最大振幅となるビームの両側のビー
ムのうち大きい方を第２の振幅として、ざらに小さい方
を第３の振幅としてそれぞれ選択される。第１及び第２
の選択回路で得られる第１及び第２の機幅は第１の角度
演算回路５によって邊ＩＩＩ； １１Ｎを比較され方位
として出力される。第２の選択回路で得られる第２及び
第３の振幅は第２の角度演算回路６によって振幅値を比
較され方位として出力される。平均回路７は第１と第２
の角度演算回路が出力するそれぞれの方位を平均し方位
として出力する。以上によって方位が検出される。FIG. 1 shows an example of the configuration of the present invention. Directional air +191a arranged at approximately equal intervals in a certain azimuth angle range,
The outputs of lb...1n are converted into amplitude outputs by the receivers 2a, 2b...2nK having logarithmic amplification detection characteristics, and from this output, the first selection circuit 3 selects the beam with the maximum amplitude. Furthermore, the second selection circuit 4 selects the larger one of the beams on both sides of the maximum amplitude beam as the second amplitude, and the roughly smaller one as the third amplitude. 1st and 2nd
The first and second aircraft widths obtained by the selection circuit 5 are compared with each other by the first angle calculation circuit 5, and are outputted as a bearing. The second and third amplitudes obtained by the second selection circuit are compared in amplitude by the second angle calculation circuit 6 and output as an azimuth. The averaging circuit 7 has the first and second
The respective azimuths output by the angle calculation circuits are averaged and output as the azimuth. The orientation is detected through the above steps.
〔発明の効果〕 −
第３図（ａ） Ｋ指向性空中線の各ビームパターンを実
線で示す。いま例えば周波数が変化しビーム幅が狭くな
るとした場合同図（ａ）Ｋ示すように各ビームにおける
ビーム幅の変化はほぼ一様である。一方同図（ｂｌｌｃ
隣９あうビームの振幅差の方位に対する変化特性を実線
で、またビーム幅が狭くなった場合の特性を点線で示す
。[Effects of the Invention] - Fig. 3(a) Each beam pattern of the K-directional antenna is shown by a solid line. For example, if the beam width is narrowed as the frequency changes, the change in beam width for each beam is almost uniform, as shown in FIG. On the other hand, the same figure (bllc
The solid line shows the change in the amplitude difference between nine adjacent beams with respect to the direction, and the dotted line shows the characteristic when the beam width becomes narrow.
また同図（Ｃ）に１つ離れたビーム間の畿幅差の方位に
対する特性を実線で、ビーム！鴫が狭くなった場合の特
性を点線で示す。いま到来方位を同図（ａ）８とすると
、最大振幅、第２根幅、第３娠幅は同図伸）、 ｇａ、
ｇｂ、 ｇＣとなる。ビーム幅が狭くなったことによ
る方位誤差は、最大振幅と第２孤幅の減算による角度演
算処理の場合には、同図（ｂｌに示されるΔθ１となり
、また第２娠幅と第３娠幅の減廊：による角度演算処理
の場合には、同図（Ｃ）忙示される△θ鵞となる。これ
ら△θｌとΔθ２のずれは相殺し合う方向に発生するた
め△θｌと△０２を和して平均すると誤差は低減される
。In addition, in the same figure (C), the solid line shows the characteristics of the difference in furrow width between beams one beam apart from each other in relation to the direction. The dotted line shows the characteristics when the ridge becomes narrower. If the arrival direction is 8 in Figure (a), the maximum amplitude, 2nd root width, and 3rd root width are 8), ga,
gb, gC. In the case of angle calculation processing by subtracting the maximum amplitude and the second arc width, the azimuth error due to the narrowing of the beam width becomes Δθ1 shown in the same figure (bl), and the second arc width and the third arc width In the case of angle calculation processing by:, the result is △θ, as shown in the figure (C).The deviations of △θl and Δθ2 occur in the direction of canceling each other out, so △θl and △02 are summed. The error is reduced by averaging.
以上説明したように本発明は、最大振幅と第２振幅との
振幅差をとり演算した角度θ晩と、最大振幅の両側の第
２振幅と第３振幅との振幅差をとり演算した角度θ２の
平均をとることによシ、従来の方位測定装置が周波数等
によって発生させる誤差を低減させ方位精度を改善でき
る効果がある。As explained above, the present invention provides an angle θ2 calculated by calculating the amplitude difference between the maximum amplitude and the second amplitude, and an angle θ2 calculated by calculating the amplitude difference between the second amplitude and the third amplitude on both sides of the maximum amplitude. By taking the average of , it is possible to reduce errors caused by frequency and the like in conventional direction measuring devices and improve direction accuracy.
第１図は本発明の方位測定装置の構成図、第２図は従来
の方位測定装置の構成図、第３図は本発明の方位測定装
置の誤差低減説明図である。
１ａ、 １ｂ・・・１ｎ・・・・・・指向性アンテナ、
２ａ 、 ２ｂ・・・２ｎ・・・・・・対数増幅検波特
性をもつ受信機、３・・・・・・第１の選択回路、４・
・・・・・第２の選択回路、５・・・・・・第１の角度
演算回路、６・・・・・・第２の角度演算回路、７・・
・・・・平均回路、８・・・・・・到来方位、９ａ、
９ｂ、 ９ｃ・・・・・・指向性空中線のビームパター
ン。
代理人 弁理士 内 原 晋 、゛・＼ Ｃ’
Ｊ −−−・ 汝
＼ Ｎ 川・ ≦
術３図FIG. 1 is a block diagram of a direction measuring device of the present invention, FIG. 2 is a block diagram of a conventional direction measuring device, and FIG. 3 is an explanatory diagram of error reduction in the direction measuring device of the present invention. 1a, 1b...1n...directional antenna,
2a, 2b...2n...Receiver with logarithmic amplification detection characteristics, 3...First selection circuit, 4.
...Second selection circuit, 5...First angle calculation circuit, 6...Second angle calculation circuit, 7...
... Average circuit, 8 ... Direction of arrival, 9a,
9b, 9c...Beam pattern of directional antenna. Agent: Susumu Uchihara, ゛・＼C'
J ---・ You\N River・ ≦ Technique 3 diagram
Claims (1)
範囲に約等間隔で並べられている指向性空中線を使用し
、まず各ビームで受信される信号のうち最大振幅のもの
を選択し、次にこの最大受信振幅となるビームと隣り合
うビームで受信される信号の振幅とを比較することで到
来電波の方位を求める方位測定装置において、最大振幅
となるビームを選び出しその振幅を第１の振幅として出
力する第１の選択回路と、最大振幅となるビームの両側
のビームのうち大きい方を第２の振幅として、さらに小
さい方を第３の振幅としてそれぞれ選択し出力する第２
の選択回路と、第１及び第２の選択回路で得られる第１
及び第２の振幅値の比較から方位を求める第１の角度演
算回路と、第２の選択回路で得られる第２及び第３の振
幅値の比較から方位を求める第２の角度演算回路と、第
１と第２の角度演算回路が出力するそれぞれの方位を入
力しこの平均を求め方位として出力する平均回路とを有
することを特徴とする方位測定装置。Using a directional antenna with multiple directional beams, each of which is arranged at approximately equal intervals in a certain azimuth angle range, first select the signal with the largest amplitude among the signals received by each beam, Next, in an azimuth measurement device that determines the direction of the incoming radio wave by comparing the beam with the maximum reception amplitude and the amplitude of the signal received by the adjacent beam, the beam with the maximum amplitude is selected and its amplitude is A first selection circuit outputs the amplitude as an amplitude, and a second selection circuit selects and outputs the larger one of the beams on both sides of the beam with the maximum amplitude as the second amplitude, and the smaller one as the third amplitude.
and the first selection circuit obtained by the first and second selection circuits.
and a first angle calculation circuit that calculates the azimuth from a comparison of the second amplitude values, and a second angle calculation circuit that calculates the azimuth from the comparison of the second and third amplitude values obtained by the second selection circuit. An azimuth measuring device comprising: an averaging circuit that inputs the respective azimuths output from the first and second angle calculation circuits, calculates the average of the azimuths, and outputs the average as the azimuth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29313186A JPS63144275A (en) | 1986-12-08 | 1986-12-08 | Azimuth measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29313186A JPS63144275A (en) | 1986-12-08 | 1986-12-08 | Azimuth measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63144275A true JPS63144275A (en) | 1988-06-16 |
Family
ID=17790818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29313186A Pending JPS63144275A (en) | 1986-12-08 | 1986-12-08 | Azimuth measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63144275A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02141684A (en) * | 1988-11-22 | 1990-05-31 | Nec Corp | Angle measuring apparatus |
| JP7188546B1 (en) * | 2021-12-06 | 2022-12-13 | 日本電気株式会社 | Direction-of-arrival estimation device for radio waves, direction-of-arrival estimation method and program |
-
1986
- 1986-12-08 JP JP29313186A patent/JPS63144275A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02141684A (en) * | 1988-11-22 | 1990-05-31 | Nec Corp | Angle measuring apparatus |
| JP7188546B1 (en) * | 2021-12-06 | 2022-12-13 | 日本電気株式会社 | Direction-of-arrival estimation device for radio waves, direction-of-arrival estimation method and program |
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