JPS6041802A - Side lobe canceller device - Google Patents
Side lobe canceller deviceInfo
- Publication number
- JPS6041802A JPS6041802A JP14954883A JP14954883A JPS6041802A JP S6041802 A JPS6041802 A JP S6041802A JP 14954883 A JP14954883 A JP 14954883A JP 14954883 A JP14954883 A JP 14954883A JP S6041802 A JPS6041802 A JP S6041802A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- processing circuit
- desired signal
- component
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
- H01Q3/2611—Means for null steering; Adaptive interference nulling
- H01Q3/2629—Combination of a main antenna unit with an auxiliary antenna unit
- H01Q3/2635—Combination of a main antenna unit with an auxiliary antenna unit the auxiliary unit being composed of a plurality of antennas
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、周囲の電波環境に適応しながら、妨害波を自
動的に抑圧するサイドロープキャンセラ装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a side rope canceller device that automatically suppresses interference waves while adapting to the surrounding radio wave environment.
サイドローブキャンセラ装置４（以後、５ＩＪＣと略す
る。）は、主にレーダ分野における適用を主眼において
おり、所望信号（レーダにおいてｔよ、目標物からの反
射波）を受信する主アンテナのサイドロープ領域に侵入
した妨害波を自動的に抑圧するために考案されたアンテ
ナ装置である。The sidelobe canceller device 4 (hereinafter abbreviated as 5IJC) is mainly intended for application in the radar field, and is a sidelobe canceller of a main antenna that receives a desired signal (in radar, a reflected wave from a target object). This is an antenna device devised to automatically suppress interference waves that invade an area.
ＳＬＣの従来例を第１図に示す。第１図において、（１
）は所望信号方向にゲインを有する主アンテナで、フェ
ーズドアレーや反射鏡アンテナが用いられる。（２）は
補助アンテナで、主アンテナ（１）のサイドローブレベ
ルにほぼ等しいゲインを有する。A conventional example of SLC is shown in FIG. In Figure 1, (1
) is the main antenna that has gain in the direction of the desired signal, and a phased array or reflector antenna is used. (2) is an auxiliary antenna, which has a gain approximately equal to the side lobe level of the main antenna (1).
（３）は、信号処理回路で補助アンテナ（２）と主アン
テナ（１）とで受信した信号の相関を取り、相関の強い
信号の電力をその出力端において最小とする１８号処理
回路である。信号処理回路（３）は、補助アンテす（２
）で受信した信号に重み伺けをするウェイト回路（４）
、ウェイト回路（４）の出力信号を合成する合成器（５
）２合成器（５）の出力信号と主アンテナで受信した信
号との差を取る差回路（６）、差回路（６）の出力信号
と補助アンテナ（２）で受信した信号との相関を取り、
ウェイト回路（４）の重みを決定する相関回路（７）か
ら構成されている。(3) is a No. 18 processing circuit that takes the correlation between the signals received by the auxiliary antenna (2) and the main antenna (1) in the signal processing circuit, and minimizes the power of the strongly correlated signal at its output end. . The signal processing circuit (3) is connected to the auxiliary antenna (2).
) Weight circuit (4) that assigns weight to the signal received by
, a synthesizer (5) that synthesizes the output signals of the weight circuit (4).
) A difference circuit (6) that takes the difference between the output signal of the 2 combiner (5) and the signal received by the main antenna, and a difference circuit (6) that calculates the correlation between the output signal of the difference circuit (6) and the signal received by the auxiliary antenna (2). take,
It consists of a correlation circuit (7) that determines the weight of the weight circuit (4).
サイドローブキャンセラは、前述したごとく主アンテナ
（１）及び補助アンテナ（２）で受ＩＮ した信号の相
関を取り、電力最小アルゴリズムにより、ウェイト回路
（４）の重みを決定する。つまり、一般のサイドローブ
キャンセラにおいては、所望ｆＭ号屯力が大きい場合に
は、所望信号までも抑圧してし捷うという欠点を有する
。この所望信号に対する抑圧を回避する手段としては、
所望信号の到来方向にイ１ｕ助アンテナのアンテナパタ
ーンの零点を形成して、１１号処理回路（３）の補助ア
ンテナ入力端に所望信号を入力しない方法がある。つま
り、このような方法を取れば所望信号による相関が重み
に反映されないために所望信号損失を回避することがで
きる。しかし、この補助アンテナに零点を形成する方法
には、以下に示すような重大な欠点がある。As described above, the sidelobe canceller correlates the signals received by the main antenna (1) and the auxiliary antenna (2), and determines the weight of the weight circuit (4) using a power minimum algorithm. In other words, the general sidelobe canceller has the disadvantage that even the desired signal is suppressed when the desired fM signal strength is large. As a means to avoid suppression of this desired signal,
There is a method in which the zero point of the antenna pattern of the 1u auxiliary antenna is formed in the arrival direction of the desired signal so that the desired signal is not input to the auxiliary antenna input terminal of the No. 11 processing circuit (3). In other words, if such a method is adopted, the loss of the desired signal can be avoided because the correlation caused by the desired signal is not reflected in the weight. However, this method of forming a zero point on the auxiliary antenna has serious drawbacks as shown below.
第１に所望信号の到来方向が変化する場合には補助アン
テナの零点をいつも所望信号方向に形成する必要があり
、零点方向をシフトするための制御部が非常に複雑とな
る。さらに所望信号の到来方向を正確に把握しておく必
要がある。第２に、補助アンテナに零点を形成するため
、零点１（」近の広い角度範囲に渡ってゲインが減少す
ることになる。よって、この角度範囲内に侵入した妨害
波に対してはＳＬＣの妨害波抑圧性能が劣化する。とい
うのは、ＳＬＣは補助アンテナで受信した信−号の電力
が大きいほど、抑圧性能及び抑圧スピードが向上するか
らである。このように、零点を形成して所望信号損失を
回避する方法は、零点のシフト機構が非常に複雑となる
こと、さらには所望１言号の到来方向を正確に把握する
必要があること、また、妨害波抑圧性能が劣化してしま
うという重大な欠点を有する。First, when the direction of arrival of the desired signal changes, it is necessary to always form the zero point of the auxiliary antenna in the direction of the desired signal, and the control section for shifting the direction of the zero point becomes very complex. Furthermore, it is necessary to accurately grasp the arrival direction of the desired signal. Second, since a zero point is formed in the auxiliary antenna, the gain decreases over a wide angular range near the zero point 1 (').Therefore, for interference waves that enter within this angular range, the SLC The interference wave suppression performance deteriorates because the SLC improves suppression performance and suppression speed as the power of the signal received by the auxiliary antenna increases. Methods to avoid signal loss require a very complicated zero point shift mechanism, the need to accurately grasp the arrival direction of a single desired word, and the interference suppression performance deteriorates. It has a serious drawback.
本発明は、上述した従来装置の欠点を改良したもので、
その目的とするところは、所望信号の到来方向が正確に
判からなくても良いし、また、妨害波抑圧性能を向上さ
せ、所望信号に損失を与えることのないＳＬＣを提供す
ることにある。The present invention improves the drawbacks of the conventional device described above.
The purpose is to provide an SLC that does not require accurate knowledge of the arrival direction of the desired signal, improves interference wave suppression performance, and does not cause loss to the desired signal.
即ち、本発明は所望信号と相関の強い基準信号を用いて
、補助アンテナで受信した信号の中から所望信号成分を
第１の信号処理回路で抑圧した後筒２の信号処理回路の
＋ｔｉｉ助アンテナ入力端に入力することを特徴とする
ＳＬＣを構成することにある。That is, the present invention uses a reference signal having a strong correlation with the desired signal to suppress the desired signal component from the signal received by the auxiliary antenna in the first signal processing circuit. The object of the present invention is to configure an SLC characterized by inputting to an input terminal.
上記本発明のＳＬＣは、前記従来例における欠点を解消
し妨害波抑圧性能、抑圧スピードを向上させ、所望信号
に損失を与えないという絶対なる効果を発揮する。さら
には、主アンテナを等方性アンテナとすれば、まったく
所望信号の到来方向の判らない移動体通信等の通信系に
も適用可能となる。The SLC of the present invention eliminates the drawbacks of the conventional example, improves interference wave suppression performance and suppression speed, and exhibits the absolute effect of not causing loss to a desired signal. Furthermore, if the main antenna is an isotropic antenna, it can be applied to communication systems such as mobile communications where the arrival direction of the desired signal is not known at all.
以下図面を参照して、本発明の一実施例を詳細に説明す
る。An embodiment of the present invention will be described in detail below with reference to the drawings.
第２図は、本発明の一実施例装置の概略（１・Ｙ成図を
示す。FIG. 2 shows a schematic (1-Y diagram) of an apparatus according to an embodiment of the present invention.
第２図において、主アンテナＵυ、補助アンテナ＠、第
２の信号処理回路０檜は前記従来例で示した内容と同等
であるう（ｌ→は第１の信号処理回路で、第２の信号処
理回路Ｏ→の１チャンネル分に相当し、ウェイト回路（
４）、差回路（６）および相関回路（７）から構成され
ている。０＄は所望信号と相関の強い基準信号を発生す
る基準信号発生回路である。基準１、を号は、第１の信
号処理回路（１荀に入力されている。In FIG. 2, the main antenna Uυ, the auxiliary antenna @, and the second signal processing circuit 0 are the same as those shown in the conventional example (l→ is the first signal processing circuit, and the second signal processing circuit It corresponds to one channel of the processing circuit O→, and the wait circuit (
4), a difference circuit (6) and a correlation circuit (7). 0$ is a reference signal generation circuit that generates a reference signal that has a strong correlation with the desired signal. Reference number 1 is input to the first signal processing circuit (1).
基準信号発生回路（へ）は、例えば所望信号の中心周波
数が既知とすれば、この周波数の信号を、１％弗ｆ言号
として発生する。要するに、所望信号と相関の強い信号
を発生すればよい。まず、補助アンテナｇ３で受信した
信号は、第１の信号処理回路（１＠において、基準信号
との相関がとられ、その出力端においては、所望信号が
抑圧され妨害波成分のみが出力される。第２の信号処理
回路（至）では、第１の信号処理回路α◇の出力が妨害
波成分のみであるから、その出力端における妨害波成分
のａ力を最小に抑圧する。このように、補助アンテナで
受信した鋪号の中から、第１の１言号処理回路（１３と
基皐信号により、所望信号を抑圧することは、等制約に
ｖ１８助アンテナのアンテナパターンの所望信号方向に
零点を形成したことになる。しかし、この零点は、空ｉ
ｉ１的に形成したものではないので、所望伝号方向近傍
におけるゲインの減少は全くない。For example, if the center frequency of the desired signal is known, the reference signal generating circuit generates a signal of this frequency as a 1% F word. In short, it is sufficient to generate a signal that has a strong correlation with the desired signal. First, the signal received by the auxiliary antenna g3 is correlated with the reference signal in the first signal processing circuit (1@), and at its output end, the desired signal is suppressed and only the interference wave component is output. In the second signal processing circuit (to), since the output of the first signal processing circuit α◇ is only the interference wave component, the power of the interference wave component at its output terminal is suppressed to the minimum. , from among the signals received by the auxiliary antenna, the first one-word processing circuit (13) and the base signal suppress the desired signal by applying equal constraints to the desired signal direction of the antenna pattern of the auxiliary antenna This means that a zero point has been formed.However, this zero point is
Since it is not formed i1, there is no decrease in gain near the desired transmission direction.
また、所引伯号の到来方向が判らなくても第１の信号処
理回路０→により、自動的に所望信号が抑圧される。Further, even if the direction of arrival of the arrival direction of the signal is not known, the desired signal is automatically suppressed by the first signal processing circuit 0→.
以上説明したように、本発明は第１の１δ号処理回路に
より所望信号成分を抑圧し、妨害波成分のみを出力し、
第２の信号処理回路により、妨害波成分のみが抑圧され
、主アンテナで受信した所望信号°成分が（員失をうけ
ることなく出力される。As explained above, the present invention suppresses the desired signal component using the first 1δ processing circuit, outputs only the interference wave component,
Only the interference wave component is suppressed by the second signal processing circuit, and the desired signal component received by the main antenna is output without any loss of signal.
このように、本発明のＳＬＣを用いることにより、所望
信号の到来方向が未知の通信系に適ＪＩｌｌカニ可能で
あること、また回路構成が容易で安（＋：Ｉｉであるこ
と、さらには妨害波抑圧性能を向上させ、））■望信号
損失もないこと等絶大なる効果を発揮する。As described above, by using the SLC of the present invention, it is possible to apply it to a communication system where the arrival direction of the desired signal is unknown, and the circuit configuration is easy and safe (+:Ii), and furthermore, it is possible to prevent interference. Improves wave suppression performance and exhibits great effects such as )) ■ No loss of desired signal.
本発明は、上記の実施例に限定場れるものではない。例
えば、基糸１＠号を発生するために、第２の１３号処理
回路の出力端における所望信号成分を抽出して行っても
よい。要するに、本発明はその要旨を逸脱しない範囲で
種々変形して実施することができる。The present invention is not limited to the above embodiments. For example, in order to generate base yarn No. 1@, a desired signal component at the output end of the second No. 13 processing circuit may be extracted. In short, the present invention can be implemented with various modifications without departing from the gist thereof.
第１図は従来例の概（略（Ｒ成図、第２図は本発明の一
実施例の構成図である。
１１・・・主アンテナ １２・・・補助アンテナ１３・
・・第２の１阿号処理回路１４・・〜第１ （ｆ） Ｉ
ｓ号処理回路１５・・・基準信号発生回路
代理人 弁理士 則 近 府 佑 （ほか１名）第 １
図
第２図FIG. 1 is an outline (R diagram) of a conventional example, and FIG. 2 is a configuration diagram of an embodiment of the present invention. 11...Main antenna 12...Auxiliary antenna 13.
...Second 1A processing circuit 14...~1st (f) I
No. s processing circuit 15...Reference signal generation circuit agent Patent attorney Noriyuki Konfu (and 1 other person) No. 1
Figure 2
Claims (2)
号と相関の強い基準１ｓ号を発生する基準信号発生回路
と、前記基準信号と前記補助アンテナで受信した１言号
の相関を取ハ相関の強い信号のＢ力をその出力端におい
て最小とする第１の信号処理回路と、前記主アンテナで
受１δした１言号と前記複数個の第１の信号処理回路の
出力信号との相関を取り、相関の強い信号の′屯カをそ
の出力端において最小とする第２の信号処理回路とから
構成されること′（ｌ−特徴とするサイドロープキャン
セラ装置。(1) A main antenna, a plurality of auxiliary antennas, a reference signal generation circuit that generates a reference 1s signal having a strong correlation with the desired signal, and a correlation between the reference signal and one word received by the auxiliary antenna. a first signal processing circuit that minimizes the B power of strongly correlated signals at its output end; and a correlation between one word received by the main antenna and the output signals of the plurality of first signal processing circuits. and a second signal processing circuit that minimizes the force of strongly correlated signals at its output terminal.
出力信号により抽出することを特徴とする特許請求の範
囲Ｉ、ｌＺ１項記載のサイドロープキャンセラ装置。(2) The side rope canceller device according to Claims I and 1Z1, characterized in that the SI (Kuwa 1 signal) is extracted by the output signal of the second signal processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14954883A JPS6041802A (en) | 1983-08-18 | 1983-08-18 | Side lobe canceller device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14954883A JPS6041802A (en) | 1983-08-18 | 1983-08-18 | Side lobe canceller device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6041802A true JPS6041802A (en) | 1985-03-05 |
Family
ID=15477559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14954883A Pending JPS6041802A (en) | 1983-08-18 | 1983-08-18 | Side lobe canceller device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6041802A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04103431U (en) * | 1991-02-12 | 1992-09-07 | 三菱農機株式会社 | Grain culm raking conveyance device in combine harvester |
-
1983
- 1983-08-18 JP JP14954883A patent/JPS6041802A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04103431U (en) * | 1991-02-12 | 1992-09-07 | 三菱農機株式会社 | Grain culm raking conveyance device in combine harvester |
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