JPH03189582A - Radar beam scanning device - Google Patents

Radar beam scanning device

Info

Publication number
JPH03189582A
JPH03189582A JP1328485A JP32848589A JPH03189582A JP H03189582 A JPH03189582 A JP H03189582A JP 1328485 A JP1328485 A JP 1328485A JP 32848589 A JP32848589 A JP 32848589A JP H03189582 A JPH03189582 A JP H03189582A
Authority
JP
Japan
Prior art keywords
beam scanning
reflecting plate
reflector
scanning device
beams
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
JP1328485A
Other languages
Japanese (ja)
Inventor
Kazunori Koga
古賀 和則
Yoshihiro Michiguchi
道口 由博
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1328485A priority Critical patent/JPH03189582A/en
Publication of JPH03189582A publication Critical patent/JPH03189582A/en
Pending legal-status Critical Current

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To detect a target in a wide area in a short time by providing plural radiators at the focus positions of parabolic reflectors which are provided opposite a reflecting plate in the up-down direction and sending two scanning beams horizontally in different transmission directions. CONSTITUTION:Spherical waves which are transmitted from the radiators 1a and 1b through waveguides 8a and 8b are converted by the parabolic reflectors 3a and 3b into plane waves, which are sent in the air as radio wave beams 4a and 4b through the reflecting plate 2. Then the angle of the reflecting plate 2 is controlled properly to make a beam scan vertically. Further, the antenna part 7 consisting of the reflectors 3a and 3b, reflecting plate 2, transmitter receiver 5, etc., is mounted on a turntable 6 and rotated to make a horizontal beam scanning. Consequently, the two beams which differ in transmission angle by 180 deg. can be radiated horizontally at the same time, so the beam scanning time in a detection area can be shortened and the target detection time in the wide area is shortened.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、レーダ装置に係り、特に、探知領域内の目標
を短時間で探知するのに好適なレーダビーム走査装置に
関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radar device, and particularly to a radar beam scanning device suitable for detecting a target within a detection area in a short time.

〔従来の技術〕[Conventional technology]

レーダ装置では、第4図に示すように、垂直及び水平方
向に細いビーム20を走査して探知領域内の目標を探知
する。この場合のレーダ装置の構成を第5図に示す。放
射器5.主反射器3.副反射器3′から構成されるアン
テナから出る電波ビーム4は、反射板2を介して外部へ
送信される。
As shown in FIG. 4, the radar device detects targets within a detection area by scanning a thin beam 20 in the vertical and horizontal directions. The configuration of the radar device in this case is shown in FIG. Radiator 5. Main reflector 3. A radio beam 4 emitted from an antenna constituted by a sub-reflector 3' is transmitted to the outside via a reflecting plate 2.

垂直方向のビーム走査は、反射板2の角度を制御するこ
とにより実施する。一方、水平方向のビーム走査は、ア
ンテナ、及び、反射板全体7をターンテーブル6を回転
することにより実施する。例えば、航空機等に搭載する
レーダ装置などでは、垂直方向く±20’)、水平方向
は全周(360°)走査が必要となる。また、飛行中の
障害物を検出するためにはビームの高速走査が必要であ
る。従って、従来のレーダ装置では、特定方向に送信す
る単一のビームを用いて、広い走査範囲をカバーするた
めに目標の探知時間が長いという欠点があつた。
Vertical beam scanning is performed by controlling the angle of the reflector 2. On the other hand, beam scanning in the horizontal direction is performed by rotating the turntable 6 for the antenna and the entire reflecting plate 7. For example, in a radar device mounted on an aircraft, etc., it is necessary to scan the entire circumference (±20') in the vertical direction and the entire circumference (360°) in the horizontal direction. In addition, high-speed scanning of the beam is required to detect obstacles in flight. Therefore, the conventional radar apparatus has a disadvantage in that it takes a long time to detect a target because it covers a wide scanning range using a single beam transmitted in a specific direction.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記従来技術では、特定方向に送信する単一のビームを
用いて、広い探知領域をビーム走査するため、目標の探
知時間が長いという問題点があった。
The conventional technique described above has a problem in that it takes a long time to detect a target because a single beam transmitted in a specific direction is used to scan a wide detection area.

本発明の目的は、水平方向において送信方向が異なる二
つのビームを用いてビーム走査を行うことにより、広い
探知領域でも目標を短時間で探知可能なレーダビーム走
査装置を提供することにある。
An object of the present invention is to provide a radar beam scanning device that can detect a target in a short time even in a wide detection area by performing beam scanning using two beams having different transmission directions in the horizontal direction.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的は、反射板を用いたレーダビーム走査装置にお
いて、反射板に対向して上下方向に二つのパラボラ反射
器を設置し、水平方向で送信方向の異なる二つのビーム
を用いたビーム走査を行うことにより達成することがで
きる。
The above purpose is to install two parabolic reflectors in the vertical direction facing the reflector in a radar beam scanning device using a reflector, and perform beam scanning using two beams with different transmission directions in the horizontal direction. This can be achieved by

〔作用〕 反射板に対向して上下方向に二つのパラボラ反射器を設
置する。また、反射板の回転中心軸上に二つの放射器を
設置する。放射器から放射された球面波はパラボラ反射
器で平面波に変換され、さらに反射板を介して大気中に
送信される。このようにして、水平方向で送信方向が1
80°異なる電波ビームを発生させることができる。ま
た、反射板の角度制御により垂直方向のビーム走査、タ
ーンテーブル上でアンテナ部全体を回転させることによ
り、水平方向のビーム走査が実現できる。
[Operation] Two parabolic reflectors are installed vertically facing the reflector. Also, two radiators are installed on the rotation center axis of the reflector. The spherical waves emitted from the radiator are converted into plane waves by the parabolic reflector, and then transmitted into the atmosphere via the reflector. In this way, the transmission direction is 1 in the horizontal direction.
It is possible to generate radio wave beams that differ by 80 degrees. Furthermore, beam scanning in the vertical direction can be achieved by controlling the angle of the reflector, and beam scanning in the horizontal direction can be achieved by rotating the entire antenna section on a turntable.

〔実施例〕〔Example〕

以下、本発明の実施例を第1図ないし第3図によって説
明する。
Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

第1−図は、本発明の一実施例の概略構成を示す図であ
る。反射板2の上下方向に対向して二つのパラボラ反射
器3a、3bを設置する。パラボラ反射器3a、3bの
焦点となる位置には各々のパラボラ反射器3a、3bに
対し電波を反射する二つの放射器1a、lbを設置する
。送受信器5a。
FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention. Two parabolic reflectors 3a and 3b are installed facing the reflector 2 in the vertical direction. Two radiators 1a and 1b are installed at focal positions of the parabolic reflectors 3a and 3b to reflect radio waves for each of the parabolic reflectors 3a and 3b. Transmitter/receiver 5a.

5bから導波管8a、8bを介して放射器1a。5b to the radiator 1a via waveguides 8a, 8b.

1bから電波を放射する。また、受信では、送信と逆の
経路を介して、目標の反射波を送受信器5a、5bで受
信する。放射器1a、lbから送信された球面波はパラ
ボラ反射器3a、3bで平面波に変換され、さらに、反
射板2を介して大気中に電波ビーム4a、4bとして送
信される。反射板2の角度を制御することにより、垂直
方向のビーム走査を実施する。また、パラボラ反射器3
a、3b、反射板2.送受信器5等から成るアンテナ部
7はターンテーブル6上に搭載されており、アンテナ部
7全体を回転させることにより、水平方向のビーム走査
を実施することができる。
Radio waves are emitted from 1b. Furthermore, in reception, the target reflected waves are received by the transceivers 5a and 5b via a path opposite to that of transmission. The spherical waves transmitted from the radiators 1a, lb are converted into plane waves by the parabolic reflectors 3a, 3b, and further transmitted through the reflector 2 into the atmosphere as radio wave beams 4a, 4b. Vertical beam scanning is performed by controlling the angle of the reflector 2. In addition, parabolic reflector 3
a, 3b, reflection plate 2. An antenna section 7 including a transmitter/receiver 5 and the like is mounted on a turntable 6, and by rotating the entire antenna section 7, horizontal beam scanning can be performed.

第2図は、垂直方向のビーム走査を実施するための反射
板駆動機構の側面図である。反射板2は中心軸で回転可
能になついている。また1反射板2はリンク9で円板1
0に連結されている。円板10を回転走査させることに
より、反射板2は」二下方向に往復運動を行い、垂直方
向のビーム走査を実施することができる。
FIG. 2 is a side view of a reflector drive mechanism for performing vertical beam scanning. The reflecting plate 2 is rotatable about a central axis. Also, 1 reflector 2 is connected to disk 1 by link 9.
Connected to 0. By rotating and scanning the disk 10, the reflecting plate 2 can reciprocate in the downward direction, thereby performing beam scanning in the vertical direction.

第3図は、本発明の一実施例の詳細構造を示す図である
。反射板2の回転中心軸12a、12bは、ベアリング
13a、13bで支持されている。
FIG. 3 is a diagram showing the detailed structure of one embodiment of the present invention. The rotation center axes 12a and 12b of the reflection plate 2 are supported by bearings 13a and 13b.

4波管8は回転中心軸12a内部を通って放射器la、
lbに接続される。円板10a、10bは各々モータl
la、llbに直結されている。また、円板10a、1
0bはリンク9a、9bで反射板2に連結されている。
The four-wave tube 8 passes through the rotation center shaft 12a to the radiator la,
connected to lb. The discs 10a and 10b each have a motor l.
It is directly connected to la and llb. In addition, the disks 10a, 1
0b is connected to the reflecting plate 2 by links 9a and 9b.

モータ]、Oa、10bを同時のタイミングで回転させ
ることにより、反射板2が回転中心軸を中心として上下
方向に往復運動を行い、垂直方向のビーム走査を実施す
る。
By rotating the motors], Oa, and 10b at the same timing, the reflecting plate 2 reciprocates in the vertical direction about the central axis of rotation, thereby performing beam scanning in the vertical direction.

〔発明の効果〕〔Effect of the invention〕

本発明によれば1反射板を用いたレーダビーム走査装置
において、水平方向に送信角度が180゜異なる二つの
ビームを同時に放射させ、この形状のビームを二次元走
査することにより、探知領域内におけるビーム走査時間
を短縮することができるので、広い探知領域内の目標の
探知時間を短縮することができる。
According to the present invention, in a radar beam scanning device using one reflector, two beams with horizontal transmission angles different by 180 degrees are simultaneously emitted, and by two-dimensionally scanning this shaped beam, a detection area can be detected. Since the beam scanning time can be shortened, the time required to detect a target within a wide detection area can be shortened.

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

第1図は、本発明の一実施例の説明図、第2図は本発明
の一実施例の側面図、第3図は本発明の一実施例の説明
図、第4図、第5図は従来例の説四回である。 la。 b ・・放射器、 ・・反射板、 3a。 3 b・・・ パラボラ反射器、 ・・送受信器、 ・・ターンチー 弔 図 バラホ゛う反的容、3(L 第 図 第 図 もう 4 図 7)(+ガ間 封6 図
Fig. 1 is an explanatory diagram of an embodiment of the present invention, Fig. 2 is a side view of an embodiment of the invention, Fig. 3 is an explanatory diagram of an embodiment of the invention, Figs. is the conventional theory four times. la. b...Radiator,...Reflector, 3a. 3 b... Parabolic reflector,...transmitter/receiver,...reflector of Turnchi's funeral bouquet, 3 (L Figure 4 Figure 7) (+Ga seal 6 Figure

Claims (1)

【特許請求の範囲】 1、電波ビームを大気中に送受信するアンテナと、送信
パルスを前記アンテナに供給する送信器と、目標からの
反射波を受信する受信器と、電波ビームの送信方向を変
えるための反射板駆動機構とを含むレーダビーム走査装
置において、 前記反射板に対向して上下方向に複数のパラボラ反射器
と、前記パラボラ反射器の焦点位置に設けた複数の放射
器とを含むことを特徴とするレーダビーム走査装置。 2、特許請求項第1項に記載のレーダビーム走査装置に
おいて、回転運動を往復運動に変えるためのリンク、円
板及び駆動モータから成る反射板駆動機構を設けたレー
ダビーム走査装置。
[Claims] 1. An antenna that transmits and receives radio wave beams into the atmosphere, a transmitter that supplies transmission pulses to the antenna, a receiver that receives reflected waves from a target, and changes the transmission direction of the radio wave beams. A radar beam scanning device including a reflector drive mechanism for the purpose of the present invention, further comprising: a plurality of parabolic reflectors arranged vertically facing the reflector; and a plurality of radiators provided at focal positions of the parabolic reflectors. A radar beam scanning device featuring: 2. A radar beam scanning device according to claim 1, which is provided with a reflector drive mechanism comprising a link, a disk, and a drive motor for converting rotational motion into reciprocating motion.
JP1328485A 1989-12-20 1989-12-20 Radar beam scanning device Pending JPH03189582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1328485A JPH03189582A (en) 1989-12-20 1989-12-20 Radar beam scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1328485A JPH03189582A (en) 1989-12-20 1989-12-20 Radar beam scanning device

Publications (1)

Publication Number Publication Date
JPH03189582A true JPH03189582A (en) 1991-08-19

Family

ID=18210804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1328485A Pending JPH03189582A (en) 1989-12-20 1989-12-20 Radar beam scanning device

Country Status (1)

Country Link
JP (1) JPH03189582A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631342A1 (en) * 1993-06-23 1994-12-28 Ail Systems, Inc. Antenna mirror scanner with constant polarization characteristics
EP0709915A1 (en) * 1994-10-29 1996-05-01 Daimler-Benz Aerospace Aktiengesellschaft Transportable radar arrangement
KR20140115815A (en) * 2013-03-22 2014-10-01 삼성테크윈 주식회사 Radar System

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631342A1 (en) * 1993-06-23 1994-12-28 Ail Systems, Inc. Antenna mirror scanner with constant polarization characteristics
US5526008A (en) * 1993-06-23 1996-06-11 Ail Systems, Inc. Antenna mirror scannor with constant polarization characteristics
EP0709915A1 (en) * 1994-10-29 1996-05-01 Daimler-Benz Aerospace Aktiengesellschaft Transportable radar arrangement
KR20140115815A (en) * 2013-03-22 2014-10-01 삼성테크윈 주식회사 Radar System

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