JPS58169071A - Bearing detection system - Google Patents

Bearing detection system

Info

Publication number
JPS58169071A
JPS58169071A JP5138182A JP5138182A JPS58169071A JP S58169071 A JPS58169071 A JP S58169071A JP 5138182 A JP5138182 A JP 5138182A JP 5138182 A JP5138182 A JP 5138182A JP S58169071 A JPS58169071 A JP S58169071A
Authority
JP
Japan
Prior art keywords
bearing
array antenna
receivers
measurement system
arithmetic processing
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
Application number
JP5138182A
Other languages
Japanese (ja)
Inventor
Mutsumasa Hosono
細野　睦正
Mutsuhiro Matsuda
松田　睦宏
Masato Inoue
正人 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Technical Research and Development Institute of Japan Defence Agency
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Technical Research and Development Institute of Japan Defence Agency filed Critical Technical Research and Development Institute of Japan Defence Agency
Priority to JP5138182A priority Critical patent/JPS58169071A/en
Publication of JPS58169071A publication Critical patent/JPS58169071A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/28—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To achieve a higher accuracy by combining a rough measurement method employing a fixed antenna system with a broad beam width and a precise measurement method employing a multibeam array antenna system with a small beam width. CONSTITUTION:An arithmetic processing circuit 3 received levels Si-1, Si and Si+1 from receivers 2i-1, 2i, 2i+1 connected to antennas 1i-1, 1i and 1i+1 in a rough bearing measurement system 4 to determine the incoming bearing of a radio wave. Then, a beam control circuit 8 receives the bearing information calculated with the arithmetic processing circuit 3 to rotate the array antenna 5 in the precise bearing measuring system 10 electronically. A switch matrix 7 is so controlled to connect five output terminals Cj-2, Cj-1, Cj, Cj+1 and Cj+2 of a lens matrix 6 corresponding to five radiation patterns with the proximity of the bearing corresponding to the front of the beam to receivers 9a, 9b, 9c, 9d and 9e.

Description

【発明の詳細な説明】 この発明は、！ルチビームアレーアンテナによる方位探
知方式に関するものである。[Detailed Description of the Invention] This invention is! This paper relates to a direction finding method using a multi-beam array antenna.

従来、方位探知の装置として第１図に示すものがあった
。この図において、１１〜１ｎは指向性アンテナ、２．
〜２ｎは受信機、３は演算処理囲路である。なお、ｎは
アンテナ１１〜１ｎ及び受ｆＩ機２゜〜２ｎの数を表わ
している。Conventionally, there has been a direction finding device as shown in FIG. In this figure, 11 to 1n are directional antennas, 2.
2n is a receiver, and 3 is an arithmetic processing circuit. Note that n represents the number of antennas 11 to 1n and fI receivers 2° to 2n.

次に第１図の従来構成の動作について説明する。Next, the operation of the conventional configuration shown in FIG. 1 will be explained.

指向性アンテナ１１〜１ｎＫ入射した方位探知すべき電
波を、アンテナ１．〜１ｆｉに直接接続された受信機２
．〜２ｎで受信し、電波到来方位によっ【生じる受信機
２．〜２ｎの受信レベルの差を用いて演算処理回路３の
中で方位を求めていた。Directional antenna 11 - 1 nK of incident radio waves to be detected are transmitted to antenna 1. ~ Receiver 2 connected directly to 1fi
．． ~2n, and depending on the radio wave arrival direction, the receiver 2. The direction was determined in the arithmetic processing circuit 3 using the difference in reception levels of ~2n.

このような従来の方式では、指向性アンテナ１１〜１ｎ
及び受信機２、〜籟の個数ｎを制約すると、受信機械確
保のためＫは必然的にアンテナ１．〜１１のビーム幅を
広くする必要があり、方位探知の精度に限界を生じる。In such a conventional system, the directional antennas 11 to 1n
and receiver 2, to the number n of antennas, K is necessarily set to antenna 1 to secure the receiving machine. It is necessary to widen the beam width of ~11, which limits the accuracy of direction finding.

一方、方位探知の精度を向上させるために１アンテナ１
．〜１ｎ及び受信機２１〜２ｎの個数ｎを増やせば装置
が大規模かつ高価にならざるを得ないとい５欠点があっ
た。On the other hand, in order to improve the accuracy of direction finding, 1 antenna 1
．． 1n and the number n of receivers 21 to 2n, the device must become larger and more expensive.

この発明は、上述の従来のものの欠点を除去するために
なされたもので、上述の従来の回路を電波到来方位の粗
測定用の系として用い、これに、マルチビームアレーア
ンテナ方式による新たな方向探知回路を方位の精測定用
の系として付加することによって、高精度の方位探知方
式を提供することを目的とするものである。This invention was made in order to eliminate the drawbacks of the above-mentioned conventional circuit, and uses the above-mentioned conventional circuit as a system for roughly measuring the direction of arrival of radio waves, and adds a new direction using a multi-beam array antenna system to this system. The purpose of this invention is to provide a highly accurate direction detection method by adding a detection circuit as a system for accurately measuring direction.

以下、この発明の一実施例な第２図および第３図を用い
て説明する。Hereinafter, an embodiment of the present invention will be explained using FIGS. 2 and 3.

第２図において、１１．・・・、１１．・・・、１．は
広いビーム幅を持つ指向性アンテナ、２８．・・・、２
１゜・・・、２７は受信機であり、これらと演算処理回
路３とで構成される系が方位粗測定系４である。また５
は狭いビーム幅な持つマルチビームアレーアンテナ、６
は移相器として働くレンズマトリクス、７はスイッチマ
トリクス、８はビーム制御回路、９ｍ、９ｂ、９ｃ、９
ｄ、９ｅは受信機であり、これらと演算処理回路３とで
構成される糸が方位精測定系１０である。なお、レンズ
マトリクス６はマルチビームアレーアンテナの放射ビー
ムに対応するｍ個の出力端子Ｃ１ｅ・・・、Ｃｊ、・・
・ｅ　Ｃｍを有している。In FIG. 2, 11. ..., 11. ..., 1. is a directional antenna with a wide beam width, 28. ..., 2
1° . . . , 27 are receivers, and the system constituted by these and the arithmetic processing circuit 3 is the azimuth coarse measurement system 4. Also 5
is a multi-beam array antenna with a narrow beam width, 6
is a lens matrix that functions as a phase shifter, 7 is a switch matrix, 8 is a beam control circuit, 9m, 9b, 9c, 9
d and 9e are receivers, and a string made up of these receivers and the arithmetic processing circuit 3 is the direction accuracy measurement system 10. Note that the lens matrix 6 has m output terminals C1e..., Cj,... corresponding to the radiation beams of the multi-beam array antenna.
・It has e Cm.

次に実施例の動作について説明する。Next, the operation of the embodiment will be explained.

第２図の方位粗測定系４０指向性アンテナ１．。Azimuth rough measurement system 40 directional antenna 1 in FIG. .

・・・ｅ　　１ｉｌｙ　　ｌｉｅ　　”１ｄｌｅ・・・
１．による放射パターンを第３図にＡＩ、・・・、　Ａ
ｉ　　１．　　ｋｉ、　Ａｉ１．、・・・。...e 1ily lie "1dle...
1. Figure 3 shows the radiation pattern according to AI,...,A
i1. ki, Ai1. ,...

Ａｆｉで表わす。また、第２図の方位精測定系１０にお
いて、レンズマトリクス６０ｍ個の出力端子ＣＩｓ　’
４ｅ・・・ｅ　ＣＪ　ｍｅ　ＣＪ　ｍｅ　ＣＪ　ｅ　Ｃ
Ｊ−ｔｌｐ　ＣＪ＋ｌｔ・・・、Ｃｍで見たマルチビー
ムアレーアンテナ５の放射パターンを第３図にＢ、、Ｂ
、、・・・ｇ　Ｂｊ　　ｌ５ＢＪ　、ｅＢ　ｊ　、　Ｂ
　ｊ＋　ｌ＋　Ｂｊ　−ｔ−ｍｓ””ｙ　　Ｂｍ　で表
わす。Represented by Afi. In addition, in the direction accuracy measurement system 10 shown in FIG. 2, a lens matrix has 60m output terminals CIs'
4e...e CJ me CJ me CJ e C
The radiation pattern of the multi-beam array antenna 5 seen at J-tlp CJ+lt..., Cm is shown in Figure 3 as B,,B
,,...g Bj l5BJ , eB j , B
It is expressed as j+l+Bj-t-ms""yBm.

ここで、第３図において、−０の方位から電波が到来し
た場合を考える。このとき演算処理回路３は方位粗測定
系４のアンテナ１１−１ｗ　１１　ｅ　１ｉ＋ｓに接続
された受信機２ｉ　　、、２ｉ　、２目、での受信レベ
ル８ｉ−Ｉｔ　Ｓ　ｉ　ｅ　ｓｌヤ、を比較して電波の
到来方位を求める。誤差を含んだ求められた方位なθ、
とする。方位粗測定系４の方位探知精度を−０とすると
、方位＃１はθ。を中心としソ七トの範囲内にはいる。Here, in FIG. 3, consider the case where radio waves arrive from the -0 direction. At this time, the arithmetic processing circuit 3 compares the reception levels 8i-ItSieSlya at the receivers 2i, 2i, 2i, connected to the antenna 11-1w11e1i+s of the azimuth coarse measurement system 4. to find the direction of arrival of the radio waves. The obtained orientation θ including errors,
shall be. If the direction detection accuracy of the direction rough measurement system 4 is -0, direction #1 is θ. It is centered around , and falls within the range of So-Nanato.

ビーム制御回路８は演算処理回路３より算出された方位
＃、の情報を受け、方位精測定系ｌＯの受信機域が方位
＃１を含む如くアレーアンテナ５を電子的に回転させ、
この方位＃、の近傍なビーム正面とする５つの放射パタ
ー：ｙ　Ｂｊ−ｗｅ　Ｂｊ−ｔ。The beam control circuit 8 receives the information on the azimuth #1 calculated from the arithmetic processing circuit 3, and electronically rotates the array antenna 5 so that the receiver area of the azimuth precision measurement system IO includes the azimuth #1.
Five radiation patterns with the beam front near this direction #: y Bj-we Bj-t.

ＢＪ＊ＢＪ＋ｌ＊　”ｊ＋１に対応するレンズマトリク
ス６０５つの出力端子Ｃト、、Ｃｊ　、、Ｃｊ、Ｃト、
。BJ*BJ+l* "Lens matrix 60 corresponding to "j+1" 5 output terminals C, , Cj , , Cj, C,
.

Ｃｊ＋、を受信機９ｍ、９ｂ、９ｃ、９ｄ、９ｅと接続
するようにスイッチマトリクス７を制御する。The switch matrix 7 is controlled to connect Cj+ to the receivers 9m, 9b, 9c, 9d, and 9e.

−０の方向からの到来電波に対して受信機９ｍ、９ｂ、
９ｃ、９ｄ、９ｅでの受信レベルは、ビーＡ　Ｂｊ」＝
　Ｂｊ−１−Ｂｊ　−Ｂｊ−ｔ　Ｉｔ　Ｂｊ。に対応し
てＳＪ−ｍｅ８ｊ　　、、８ｊ　　、　　８ｊヨ＊ＳＪ
＋１　となる。この方式では、マルチビームアレーアン
テナ６のビーム数ｍと、アレーアンテナ５の形状によっ
て決まる放射パターンの形状とを無関係に設定できるか
ら、ある一定の角度範囲内にビーム幅の狭い多数のビー
ムを並べることができる。したがって、限られた数量の
受信機を有効に活用でき、最終的な方位探知−差Ｊ、は
方位粗測定系４による一差一、よりも小さくすることが
可能である。The receivers 9m, 9b,
The reception levels at 9c, 9d, and 9e are B A Bj''=
Bj-1-Bj-Bj-t It Bj. Corresponding to SJ-me8j,,8j,8jyo*SJ
It becomes +1. In this method, the number m of beams of the multi-beam array antenna 6 and the shape of the radiation pattern determined by the shape of the array antenna 5 can be set independently, so many beams with narrow beam widths can be arranged within a certain angular range. be able to. Therefore, a limited number of receivers can be used effectively, and the final orientation finding difference J can be made smaller than the difference J due to the rough orientation measurement system 4.

なお、上記実施例では方位精測定系１０の受信機９ｍ、
９ｂ、９ｃ、９ｄ、９ｅを５個として説明したが、この
数は任意である。In the above embodiment, the receiver 9m of the direction accuracy measurement system 10,
Although the description has been made assuming that 9b, 9c, 9d, and 9e are five, this number is arbitrary.

また、アレーアンテナ５は線状アレーに限定されず、円
形アレーもしくは平面アレーでもよい。Further, the array antenna 5 is not limited to a linear array, but may be a circular array or a planar array.

さらにレンズマトリクス６及びスイッチマトリクス７を
ディジタル移相器におきかえることも可能である。Furthermore, it is also possible to replace the lens matrix 6 and switch matrix 7 with digital phase shifters.

以上述べたように、この発明の方位探知方式によれば、
広いビーム幅をもつ固定アンテナによる振幅比較方式と
、狭いビーム幅を持つマルチビームアレーアンテナによ
る振幅比較方式とを併用することによって、限られたチ
、ヤンネル数の受信機を有効に活用した精度のよい方位
探知性能を得ることのできる利点がある。As described above, according to the direction finding method of this invention,
By combining the amplitude comparison method using a fixed antenna with a wide beam width and the amplitude comparison method using a multi-beam array antenna with a narrow beam width, it is possible to improve accuracy while effectively utilizing a receiver with a limited number of channels and channels. This has the advantage of providing good direction finding performance.

【図面の簡単な説明】[Brief explanation of drawings]

＃！１図は従来の固定アンテナによる方位探知方式の構
成図、第２図はこの発明のマルチビームアレーアンテナ
を用いた方位探知方式の一実施例の構成図、第３図はそ
の方位探知子Ｉｌｌの説明図である。 ＩＩ〜１ｎ・・・アンテナ、２．〜２ｎ・・・受信機、
３・・・演算処理回路、４・・・方位粗測定系、５・・
・アレーアンテナ、６・・・レンズマトリクス、Ｃ１〜
Ｃ−・・・出力端子、７・・・スイッチマトリクス、８
・・・ビーム制御回路、９ａ、９ｂ、９ｃ、９ｄ、９ｅ
・−・受信機、１０・・・方位粗測定系、ｎ・・・方位
粗測定系のアンテナ及び受信機の数、ｍ・・・レンズマ
トリクスの出力端子数、へ・・・電波到来方位、人、〜
Ａ１・・・アンテナ１．〜１゜Ｋよる放射パターン、８
ｉ、、８五ｅ８１＋ｔ・・・−０方向よりの到来電波を
受信機２１−１＊２ｉｅ２ｉ＋１で受信したときの受信
レベル、０、・・・方位粗測定系４による算出方位、−
８・・・方位粗測定系４による一差範囲、Ｂｉ〜Ｂｍ・
・・レンズ！　トリクス６の出力端子Ｃ３〜Ｃｍで見た
アレーアンテナ５Ｋ。 よる放射パターン、ＳＪ　−＊　＊　８Ｊ−１＋　ＳＪ
　ｅ　Ｓｊ　＋　ｌ　ｍ８ｊ□・・・−０方向よりの到
来電波をレンズマトリクス６の出力端子Ｃｊ−１，Ｃｊ
−１，Ｃｊ　、Ｃｊ＋−１，Ｃｊ＋雪を通して受信機９
ａ、ｅｂ、９ｃ、９ｄ、９ｅで受信したときの受信レベ
ル、４・・・方位粗測定系１０による誤差範囲。 特許出願人 防衛庁技術研究本部長　大金　幸衛 代理人　弁理士　村井　隆 第１図 第　２１ヌ１#! Figure 1 is a block diagram of a conventional direction finding system using a fixed antenna, Figure 2 is a block diagram of an embodiment of the direction finding system using a multi-beam array antenna according to the present invention, and Figure 3 is a diagram of the direction finder Ill of the present invention. It is an explanatory diagram. II-1n...antenna, 2. ~2n...receiver,
3... Arithmetic processing circuit, 4... Rough direction measurement system, 5...
・Array antenna, 6...Lens matrix, C1~
C-...Output terminal, 7...Switch matrix, 8
...Beam control circuit, 9a, 9b, 9c, 9d, 9e
...Receiver, 10... Direction rough measurement system, n... Number of antennas and receivers of the direction rough measurement system, m... Number of output terminals of lens matrix, To... Radio wave arrival direction, Man,~
A1...Antenna 1. Radiation pattern by ~1°K, 8
i,,85e81+t...- Reception level when the receiver 21-1*2ie2i+1 receives an incoming radio wave from the 0 direction, 0,...Azimuth calculated by the azimuth rough measurement system 4, -
8...Difference range by direction rough measurement system 4, Bi~Bm・
··lens! Array antenna 5K seen from output terminals C3 to Cm of Trix 6. Radiation pattern according to, SJ - * * 8J-1+ SJ
e Sj + l m8j□...The incoming radio waves from the -0 direction are sent to the output terminals Cj-1, Cj of the lens matrix 6
-1,Cj,Cj+-1,Cj+Receiver 9 through snow
Reception levels when received at a, eb, 9c, 9d, 9e, 4...Error range by the azimuth rough measurement system 10. Patent applicant: Director of Technology Research Headquarters, Defense Agency, Yukie Ogane, Patent attorney: Takashi Murai, Figure 1, No. 21, No. 1

Claims (1)

【特許請求の範囲】[Claims] （１）　　振幅比較による方位探知方式において、広い
ビーム幅を持つ固定アンテナ方式の粗ＩＩＩ定系と、狭
いビーム幅を持つマルチば一ムアレーアンテナ方式の精
測定系との両方の系を備え、前記１１＃１定系による１
次データと、該４次データによって得られた到来電波方
位を含む如く受信機域が設定される前記精測定系による
２次データとを併用して方位探知精度を向上させたこと
を％黴とする方位探知方式。(1) In the direction finding method using amplitude comparison, it is equipped with both a coarse III fixed system with a wide beam width and a precise measurement system with a multi-column array antenna system with a narrow beam width. 1 according to the above 11 #1 fixed system
The accuracy of azimuth detection is improved by using the following data together with the secondary data from the precise measurement system in which the receiver area is set to include the direction of the incoming radio waves obtained from the 4th data. Direction finding method.
JP5138182A 1982-03-31 1982-03-31 Bearing detection system Pending JPS58169071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5138182A JPS58169071A (en) 1982-03-31 1982-03-31 Bearing detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5138182A JPS58169071A (en) 1982-03-31 1982-03-31 Bearing detection system

Publications (1)

Publication Number Publication Date
JPS58169071A true JPS58169071A (en) 1983-10-05

Family

ID=12885361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5138182A Pending JPS58169071A (en) 1982-03-31 1982-03-31 Bearing detection system

Country Status (1)

Country Link
JP (1) JPS58169071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281820A (en) * 1985-10-04 1987-04-15 Mitsubishi Electric Corp Distress communication method by geostationary satellite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281820A (en) * 1985-10-04 1987-04-15 Mitsubishi Electric Corp Distress communication method by geostationary satellite

Similar Documents

Publication Publication Date Title
Elsmore et al. The operation of the Cambridge one-mile diameter radio telescope
US3144649A (en) Direction finder or omnirange beacon with wide-aperture antenna system
EP0366246A2 (en) Direction finding apparatus using several directional antennae
CN100498372C (en) Device for tracking three radar signals of same carrier
US11431400B2 (en) Method and apparatus for forming a plurality of beamformed signals using a plurality of received signals
EP2342911B1 (en) An arrangement for improved isolation between adjacent cell areas
US3864683A (en) Arrangement for an automatic resetting system for microwave antennas
JPS58169071A (en) Bearing detection system
US3246331A (en) Direction finder antenna apparatus
JPH01195374A (en) Antenna measuring system
CA1213025A (en) Method and apparatus for obtaining antenna tracking signals
JPH04232885A (en) Elevation-angle measuring device for rada having double-curved-surface reflecting mirror type antenna
US3175156A (en) Amplitude scanning of an antenna array on receiving
JP2757667B2 (en) Flying object guidance device
JP3437254B2 (en) Antenna device
US3179940A (en) Antenna system for twin-channel visual direction finder
JPS5992369A (en) Direction finder
JP2621155B2 (en) Angle measuring device
EP0141886A1 (en) Monopulse detection systems
JPH0378676A (en) Bearing detector
JP2732302B2 (en) Radio direction measurement antenna system
Travers Spacing-error analysis of the eight-elemennt two-phase adcock direction finder
JPH0572312A (en) Detection device azimuth
JPH0784025A (en) Receiver
JPH02111109A (en) Array antenna system