JPS5875079A - Side lobe suppressing system - Google Patents
Side lobe suppressing systemInfo
- Publication number
- JPS5875079A JPS5875079A JP17410181A JP17410181A JPS5875079A JP S5875079 A JPS5875079 A JP S5875079A JP 17410181 A JP17410181 A JP 17410181A JP 17410181 A JP17410181 A JP 17410181A JP S5875079 A JPS5875079 A JP S5875079A
- Authority
- JP
- Japan
- Prior art keywords
- beam pattern
- pulse
- omega
- difference
- control pulse
- 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
- 238000000034 method Methods 0.000 claims description 15
- 230000001629 suppression Effects 0.000 claims description 15
- 241000519695 Ilex integra Species 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000003111 delayed effect Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 2
- 235000014785 Bergenia crassifolia Nutrition 0.000 description 1
- 240000004972 Bergenia crassifolia Species 0.000 description 1
- 241000027294 Fusi Species 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は航空父通宮１ｔｌｌｊ慎器に関し２％にレーダ
ー管制システムにおける２次監視レーダー（以下５Ｌ）
ｔと称す）システムでサイドロープ抑圧方式％式％
航空管制に使用さｎる８８九では一般に質問用空中線の
サイドローブによる擬似ターゲットの発生かめる。[Detailed description of the invention] The present invention relates to a secondary surveillance radar (hereinafter referred to as 5L) in a radar control system for 2% of aircraft carriers.
In the 889 system used for air traffic control, the generation of false targets is generally caused by the side lobes of the interrogation antenna.
従来、一般にトランスポンダには質問用空中線のサイド
ロープによる質問に対してはモートノ（ルスの第２パル
ス（１）３ハルスと呼はれる）を禁止するサイドロープ
抑圧＠能が備えらｎており塾こｒｌ利用してサイドロー
ブ伸圧を行なう方式かわる。こ才しは第１図にボすよう
に地上局買間用窒中鍼ｌ及び制御用（無指向８：）シ中
線２の２つの全ψＭ”を有し、送受１］に３からこｎら
仝中縁１ｔ２を介して各々モードパルスｐｌＩｐ３及び
制御パルスｐ ２ ’ｆ トランスポンダ５の窒中？＃
！Ｊ４に送出する。トランスポンダ５はｐｌとｐ２パル
スの振幅を比軟して、サイドローブによる質問に対して
は。Conventionally, transponders have generally been equipped with side-lobe suppression that prohibits motor noise (also known as the second pulse of Lus (1) 3 Hals) in response to interrogations using the side ropes of the interrogation antenna. The method is changed to perform sidelobe expansion using this rl. As shown in Fig. 1, this model has two total ψM'', a central line for the ground station and a central line for control (non-directional 8:), and a line from 3 to 3 for transmission and reception. The mode pulse plIp3 and the control pulse p2'f are transmitted through the middle edge 1t2 of the transponder 5, respectively.
! Send to J4. The transponder 5 softens the amplitude of the pl and p2 pulses for sidelobe interrogation.
トランスポンダ内部で約３５μｓの抑圧ゲートを兜生じ
、それ以降の質問パルスの受信ｔ−Ｍ止する。A suppression gate of about 35 .mu.s is generated inside the transponder, and reception of subsequent interrogation pulses is stopped.
第２図は全中線の水平ビーム・パターンを示す。FIG. 2 shows a full median horizontal beam pattern.
１１は質問用空中線との相対関係を示すための質問用空
中縁ｌの平面形状、６は質問用空中線の水平ビーム・パ
ターン、７は制＠空中！２のビーム・パターンである。11 is the planar shape of the interrogation aerial edge l to show the relative relationship with the interrogation antenna, 6 is the horizontal beam pattern of the interrogation antenna, and 7 is control@air! 2 beam pattern.
第３図は各々の空中線に送らｎる送信パルス波形を示す
。第４１扛トランスポンダの受１ｊ波形で（ａ）はトラ
ンスポンダが第２図ノＡ点に位置し、応答する場合、（
ｂ）Ｕ）ランスボンダが第２図の８点に位置し、応答を
抑圧する場合を示す。FIG. 3 shows the transmit pulse waveforms sent to each antenna. 41. In the reception 1j waveform of the transponder, (a) shows that when the transponder is located at point A in Figure 2 and responds, (
b) U) The case where the lance bonder is located at point 8 in FIG. 2 and suppresses the response is shown.
以上述べて米た方式は３パルスサイドロ一ブ抑圧方式と
呼は扛、δ１ｌｓｌ（とじては世がで広く用いらｎてい
る方式である。The method described above is called the 3-pulse sidelobe suppression method, and is a method that is widely used in the world.
一方、３パルスサイドローブ迎圧万式や受信サイドロー
ブ抑圧方式を利用して実効ビーム幅を狭く、シかも安定
にする方式として和差仝中一方式が知らｎている。該方
式は第５図に示すように同−史中一から和ビーム・パタ
ーン及び走ビームパターンの２ビームパターンを形成す
せ、３パルスｅサイドロ一プ抑圧方式の一合は和ビーム
・パターンからｐｉ ｌ ｐａを、また走ビーム・パタ
ーンからＩ）２ｔ”送出する。この場合はイービーム・
パターンとにビーム・パターンの比によってトランスポ
ンダからの応答の幅が決まるので実効ビーム幅は和と一
ム・パターンの−のみでなく差ビームパターンと和ビー
ム−φパターンとの振幅比で決る。従ってトランスポン
ダまでの距離やトランスポンダの空中線利得変ｌｌＩｈ
等にかかわらず実効ビーム幅を個くしかも安定にできる
という特長かめる。On the other hand, a one-way system is known as a system that uses a three-pulse sidelobe suppression system or a reception sidelobe suppression system to narrow the effective beam width and stabilize the beam width. As shown in Fig. 5, this system forms two beam patterns, a sum beam pattern and a running beam pattern, from the beginning of the history, and the combination of the three-pulse e-sideloop suppression method is based on the sum beam pattern. pil pa is also transmitted from the running beam pattern. In this case, the E beam
Since the width of the response from the transponder is determined by the ratio of the beam pattern to the beam pattern, the effective beam width is determined not only by the amplitude ratio between the sum and the sum pattern but also by the amplitude ratio between the difference beam pattern and the sum beam -φ pattern. Therefore, the distance to the transponder and the antenna gain change of the transponder
The advantage of this method is that the effective beam width can be made small and stable regardless of the situation.
しかし、第１図に示すような貝間用窒中−と制飾用全中
巌の２つの空中−による３パルスサイドロ一プ抑圧方式
は次のような欠点がある。However, the 3-pulse sideloop suppression method using two types of air, one for shell-shaped nichuan and one for decorative use, as shown in FIG. 1, has the following drawbacks.
つまり、空中−が別々に設置さ扛るので、岡望中線の位
相中心を一致させることは物理的に困難でろす、この鮎
米、地面や酵＠等による反射波との干渉によって生じる
ロービングパターンハ各空中−によって典ることになる
。こｎは相対ロービングとけはｊＬ、両受中線の相対利
得が実効的に変化し、甚だしい場合は、主ビーム方向に
おけるターゲットの抑圧や、サイドローブ抑圧＠ｈシの
損わ扛゛る原因となる。In other words, since the air waves are set up separately, it is physically difficult to match the phase center of the Okabo center line. The pattern will be determined by each air. This effectively changes the relative roving and relative gains of both receiving lines, and in severe cases can cause suppression of the target in the main beam direction and loss of sidelobe suppression. Become.
また和差窒中線方式の場合１本質的に和ビームパターン
と差ビーム・パターンの位相中心は一致するが、主ビー
ム方向を除く全方位にわたって差し−ム・パターンが和
ビーム・パターンのサイド ′ローブを横うことは困難
であり、サイドロープ抑圧愼■ヒｔｌ−ｗ効に働かせる
には制御用ビームを折用する必要がある。しかし、この
場合でも前記相対ロービングの量線が生じる・
本発明は、和差仝申−万式の軸長を生かし、しかも相対
ロービングを憾力少くして有効にサイドロープを抑圧す
るために、オメガ・ビーム・パターンとけばｎる制御用
ビーム・パターンを質問用空中縁の中に組み込み、差ビ
ーム・パターンとオメガ・ビーム・パターンｔ′−力増
幅器又は電力分配器によって合成し、ｃｒｔを制御用空
中−として使用することによハ有効にブイトロープを抑
圧する方式を提供するものである。In addition, in the case of the sum-difference Nitto central line method, 1 the phase centers of the sum beam pattern and the difference beam pattern are essentially the same, but the difference beam pattern is on the side of the sum beam pattern in all directions except the main beam direction. Traversing the lobes is difficult and requires the use of control beams for effective sidelobe suppression. However, even in this case, the above-mentioned relative roving curve occurs.The present invention makes use of the axial length of the Wazashi-Banshiki, and in order to reduce the relative roving and effectively suppress the side rope, The omega beam pattern and the control beam pattern are incorporated into the interrogation aerial edge, and the difference beam pattern and the omega beam pattern t' are combined by a force amplifier or power divider to control the crt. This provides a method for effectively suppressing the boot rope by using it as an aerial vehicle.
以下２図四’ｋｌ照して本発明の芙施Ｍについて誘明す
る。The fusi M of the present invention will be explained below with reference to Figures 2 and 4.
本発明によるサイドローブ抑圧方式のブロック図を示す
第６１鷺参照すると１本発明は和ビーム・ハターン、差
ビーム・パターン並ヒニオメガ・ビーム・パターンを有
する空中租１８と、（渣＋オメガ）ビーム・パターンを
合成ｙるための電力分配器１９と、ｐｌｐｐ３並びにｐ
２パルスを送信し、応答（ｄ−ｊｔ’ｔ−受信する送受
信機２０とから構成さｎる。３稙ｑのビーム・パターン
を有する空中線１８の例としては昭和５３年２男２４日
電子通信♀会元行の昭和５３年度電子遥信学会宇宙航行
エレクトロニクス研究会斌科８ＡＮＥ７７−３１「δｓ
ｋＬにおける廖「妖術その■」並びに１９７９年７月２
７日付電子通信学会技術賀料ｆＳＡへＥ７９−１７１ｔ
ｓ８にオーブンアレイアンテナの試作実験」の中で元衣
さｎている。該空中−の各々のビーム・パターンは第７
図（ａ） ｌ （ｂ） ｔ （Ｃ）に示す通りでわる。Referring to No. 61 illustrating a block diagram of a sidelobe suppression method according to the present invention, the present invention includes an air beam 18 having a sum beam pattern, a difference beam pattern, and a hini omega beam pattern, and a (edge + omega) beam pattern. A power divider 19 for combining patterns, plpp3 and p
It consists of a transmitter/receiver 20 that transmits two pulses and receives a response (d-jt't-n.An example of an antenna 18 having a beam pattern of three beams is 1973, 2nd son, 24th electronic communication. 8ANE77-31 "δs
Liao “Sorcery ■” in kL and July 2, 1979
E79-171t to IEICE technical report fSA dated 7th
Mr. Motoro is in the "Prototype Experiment of Oven Array Antenna for S8". Each of the beam patterns in the air is the seventh beam pattern.
It changes as shown in Figure (a) l (b) t (C).
本発明では差ビーム拳パターン及びオメガ・ビーム・パ
ターンｔ−電力分配器等で粕合し、第７図（ｄ）に示す
（差十オメガ）ビーム・パターンテｔｂｌＪ御パルス（
ｐ２）を送信する。合成さ扛た（差十オメガ）ビーム・
パターンハ差ビーム争パターンにオメガ・ビーム・バタ
ー）ンを加算された形となる。In the present invention, the difference beam pattern and the omega beam pattern are combined using a power divider, etc., and the (difference 10 omega) beam pattern te tblJ control pulse (
p2). Synthesized beam (difference 10 omega)
The pattern is a difference beam contest pattern with Omega Beam Butter) added.
但し２合成のための電力分配器等により、各々のビーム
パターンの何れか利得の高い方に対してれ利得が約ａｃ
ｉｂ低下する。However, due to the power divider etc. for combining the two beams, the gain is approximately ac for whichever beam pattern has the higher gain.
ib decreases.
（差十オメガ）ビームを使用してサイドロープ抑圧を行
えは和差空中線方式の利点はそ１ま生かすことができ、
しかもサイドロープ抑圧を有効に行うことができる。By using a (difference 10 omega) beam to suppress side ropes, you can take full advantage of the advantages of the difference antenna system.
Moreover, side rope suppression can be effectively performed.
向、オｌビーム・パターンの、背面＠射による擬似ター
ゲットを有効に抑圧するために、オメガ−ビーム・パタ
ーン全補充する手段としてｌｒ面方射器や側聞方射器を
追加する方法も４えら扛る。In order to effectively suppress spurious targets caused by rear @ firing in the omega-beam pattern, there is also a method of adding an LR surface radiator or side ray radiator as a means of replenishing the entire omega-beam pattern. Exciting.
以上の実施例において、和ビームパターンと走ビームパ
ターンの利得差を減衰器の押入によって震化す牡は比軟
的自由に実効ビーム暢を辿択できる。In the embodiments described above, the gain difference between the sum beam pattern and the running beam pattern is reduced by inserting an attenuator, and the effective beam balance can be relatively freely selected.
本発明は以上続開したように、電力分配器看しくは電力
合成器によって避ビーム・パターンとオメガ・ビーム・
パターンを合成し、こｎをサイドて使用することにより
、和ビーム・パターンのサイドロープ會十分に覆うこと
ができ、有効にサイドロープを抑圧する効果がある。As described above, the present invention uses a power divider or a power combiner to create a beam avoidance pattern and an omega beam pattern.
By combining patterns and using this n as a side, it is possible to sufficiently cover the side ropes of the sum beam pattern, and there is an effect of effectively suppressing the side ropes.
し〃・も従来からの３パルスサイドロ一プ抑圧方式や和
差空中線方式の機能がそのまま維持できると共に従来の
送信機、受信機の機能、性能がそのま′を通用できる。However, the functions of the conventional three-pulse sideloop suppression method and the sum-difference antenna method can be maintained as they are, and the functions and performance of the conventional transmitter and receiver can be used as they are.
４．１囲の量率な祝明
第１図は従来の３パルスサイドロ一プ抑圧方式を示した
プルラフ図、第２図は空中線の水平ビームパターンを示
す図、第３図は送信パルスの時間関係を示す図、第４図
はトランスポンダにおける受１に波形を示す図を第５図
は和差を中線υ主ビーム方向の水平ビーム・パターンを
示す図、第６図は本発明の一実施例を示したブロック図
、第７図Ｉａ、＊ｕビーム１パターン、雅ビームｅバダ
ーン、オメガ・ビーム・パターンを示す図でりる。4.1 Figure 1 is a pulllough diagram showing the conventional three-pulse sideloop suppression method, Figure 2 is a diagram showing the horizontal beam pattern of an antenna, and Figure 3 is a diagram showing the transmission pulse. Figure 4 is a diagram showing the waveform of receiver 1 in the transponder, Figure 5 is a diagram showing the sum difference and the horizontal beam pattern in the central beam direction, and Figure 6 is a diagram showing the horizontal beam pattern in the main beam direction. FIG. 7 Ia is a block diagram showing an embodiment, and is a diagram showing one *U beam pattern, Miyabi beam e Badan, and Omega beam pattern.
ｌ・・・・・・質問用空中緋（側面から見た形状）、ｌ
−・・・・・・質問用窒中？Ｉｉ！！１（平面から見た
形状）、２・・・・・・制御用空中巌、３・・・・・・
送受引丸 ４・・・・・・トランスポンダ望中稼、５・
・・・・・トランスポンダ、６・・・・°・質問用望中
線水平ビーム・パターン、７・・・・・・制御用全中縁
水平ビーム・パターン、８・・・・・・買間用空中線（
側面から児た形状）、９・・・・・・制御用全中線、ｌ
Ｏ・・・・・・トランスポンダ空中ｍ、１１・・・・・
・トランスポンダ、１２・・・・・・第一の受信機、１
３・・・・・・第二の受信機、１４・・・・・・振鴨比
峨器、１５・・・・・・ゲート回路、１６・・・・・・
出力端子、１７・・・・・・本日差全中＆１゜１８・・
・・・・和差オメガ空中縁、１９・・・・・・電力分配
器（又は電力合成６等）、２０・・・・・・ｆｓ受１ば
機。l...Question air scarlet (shape seen from the side), l
−・・・・・・Nitchu for questions? Ii! ! 1 (shape seen from a plane), 2... Aerial rock for control, 3...
Sending/receiving/receiving round 4...Transponder request, 5.
...Transponder, 6...°・Viewing line horizontal beam pattern for interrogation, 7... Full center edge horizontal beam pattern for control, 8... antenna (
(shaped from the side), 9... All median lines for control, l
O...Transponder in the air m, 11...
・Transponder, 12...First receiver, 1
3...Second receiver, 14...Shikamohiga device, 15...Gate circuit, 16...
Output terminal, 17... Today's difference is all medium & 1゜18...
...Was difference omega aerial edge, 19...power divider (or power combiner 6, etc.), 20...fs receiver 1 machine.
第２閏 第４図 １’／ ′１７５閉 どυ 第６ 図 ￥７７図2nd leap Figure 4 1’/ '175 closed Do υ Figure 6 ¥77 figure
Claims (1)
ｍｌパルス及び第２パルスから成るモード・パルスと前
記第１パルスに対して時間的に遅ｎ（差十オメガ）ビー
ムパターンで形成さｎる制御パルスを同−空中線から送
出し、トランスポンダ側において受信した前記第１パル
スと制御パルスとのレベル比較を行ない、前記制御パル
スのレベルの方が高いとき予め短めた時間だけ受信１に
号を阻止することにより擬似夕゛−ゲットの晃生を抑圧
するサイドロープ抑圧方式。Formed with a single time interval gold mochi sum beam pattern -n;b
A mode pulse consisting of a ml pulse and a second pulse, and a control pulse formed by a beam pattern temporally delayed (10 omega difference) with respect to the first pulse are transmitted from the same antenna and received at the transponder side. A side that suppresses the occurrence of a pseudo target by comparing the levels of the first pulse and the control pulse, and blocking the signal to the receiver 1 for a predetermined short period of time when the level of the control pulse is higher. Rope suppression method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17410181A JPS5875079A (en) | 1981-10-30 | 1981-10-30 | Side lobe suppressing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17410181A JPS5875079A (en) | 1981-10-30 | 1981-10-30 | Side lobe suppressing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5875079A true JPS5875079A (en) | 1983-05-06 |
Family
ID=15972659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17410181A Pending JPS5875079A (en) | 1981-10-30 | 1981-10-30 | Side lobe suppressing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875079A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540904A (en) * | 1978-08-24 | 1980-03-22 | Nec Corp | Side lobe suppression system |
-
1981
- 1981-10-30 JP JP17410181A patent/JPS5875079A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540904A (en) * | 1978-08-24 | 1980-03-22 | Nec Corp | Side lobe suppression system |
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