JP2842023B2 - Transmission synchronization system - Google Patents
Transmission synchronization systemInfo
- Publication number
- JP2842023B2 JP2842023B2 JP5900892A JP5900892A JP2842023B2 JP 2842023 B2 JP2842023 B2 JP 2842023B2 JP 5900892 A JP5900892 A JP 5900892A JP 5900892 A JP5900892 A JP 5900892A JP 2842023 B2 JP2842023 B2 JP 2842023B2
- Authority
- JP
- Japan
- Prior art keywords
- distance measuring
- instrument landing
- information
- measuring device
- station identification
- 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.)
- Expired - Fee Related
Links
Landscapes
- Radio Relay Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
【０００１】[0001]
【技術分野】本発明は送出同期システムに関し、特に計
器着陸装置（ＩＬＳ）及び超短波全方向式無線標識（Ｖ
ＯＲ）のいずれか一方と距離測定装置（ＤＭＥ）とが併
設される場合における送出同期システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to transmission synchronization systems, and more particularly to instrument landing gear (ILS) and very high frequency omnidirectional radio beacon (V).
OR) and a transmission synchronization system in the case where a distance measuring device (DME) is provided in parallel.
【０００２】[0002]
【従来技術】一般に、計器着陸装置と距離測定装置とが
併設される場合又は超短波全方向式無線標識装置と距離
測定装置とが併設される場合、それぞれの装置は、自装
置の局識別符号を送信する。2. Description of the Related Art In general, when an instrument landing device and a distance measuring device are provided together, or when an ultra-high frequency omnidirectional radio beacon device and a distance measuring device are provided together, each device has its own station identification code. Send.
【０００３】以下、図２に示されているように、滑走路
等のように計器着陸装置100 と距離測定装置200 とが併
設される場合を例として説明する。Hereinafter, as shown in FIG. 2, an example in which an instrument landing device 100 and a distance measurement device 200 are provided side by side, such as a runway, will be described.
【０００４】計器着陸装置と距離測定装置の各々から送
信される局識別符号はモールス信号であるため、送信タ
イミングが重なると、航空機側では各装置を識別できな
い。したがって、局識別符号については、その送信タイ
ミングが互いに重ならないよう同期をとる必要がある。[0004] Since the station identification code transmitted from each of the instrument landing device and the distance measurement device is a Morse code, if the transmission timings overlap, the aircraft cannot identify each device. Therefore, it is necessary to synchronize the station identification codes so that their transmission timings do not overlap each other.
【０００５】従来、この種の同期システムでは図に示さ
れているように、局識別符号のキーイング発生回路３で
計器着陸装置用のキーイング信号及び距離測定装置用の
キーイング信号（互いに重なり合わないよう同期がとれ
ている）を発生している。そして、計器着陸装置用のキ
ーイング信号は計器着陸装置送信機２に送られ、送信出
力をキーイング信号で変調し空中線１を通して計器着陸
装置局識別信号として発射される。Conventionally, in this type of synchronization system, as shown in the figure, a keying signal for an instrument landing device and a keying signal for a distance measuring device (so that they do not overlap each other) by a keying generation circuit 3 of a station identification code. Are synchronized). Then, the keying signal for the instrument landing device is sent to the instrument landing device transmitter 2, the transmission output is modulated by the keying signal, and emitted as an instrument landing device station identification signal through the antenna 1.
【０００６】一方、距離測定装置用のキーイング信号
は、伝送ライン１１により外部キーイング信号として距
離測定装置のバッファ回路１０に送られる。そして、外
部キーイング判定回路９により計器着陸装置からのキー
イング信号の有無を判定され、この外部キーイング信号
がバッファ回路１０に入力されている場合は、その外部
キーイング信号を距離測定装置送信機５に送り、送信出
力をキーイングし、空中線４を通して距離測定装置局識
別信号として発射される。On the other hand, the keying signal for the distance measuring device is sent as an external keying signal to the buffer circuit 10 of the distance measuring device via the transmission line 11. Then, the presence or absence of a keying signal from the instrument landing device is determined by the external keying determination circuit 9. If the external keying signal is input to the buffer circuit 10, the external keying signal is sent to the distance measuring device transmitter 5. , The transmission output is keyed and emitted as a distance measuring station identification signal through the antenna 4.
【０００７】また、外部キーイング信号が何らかの障害
により所定の時間、距離測定装置に入力されなかった場
合は、外部キーイング判定回路９がそれを判定して、ス
イッチＳＷを切替えて内部キーイング発生回路６をトリ
ガし、内部キーイング信号を送信機５に送り、内部キー
イング信号により距離測定装置局識別符号を発射する。If the external keying signal has not been input to the distance measuring device for a predetermined time due to some trouble, the external keying determining circuit 9 determines this and switches the switch SW to switch the internal keying generating circuit 6 on. Trigger and send an internal keying signal to the transmitter 5 to emit a distance measuring station identification code by the internal keying signal.
【０００８】計器着陸装置からは局識別符号とともに自
装置に対する航空機の仰角及び方位角に関する情報が発
射され、航空機側では、その情報に基づいて計器着陸装
置からみた自機の仰角及び方位角を測定する。[0008] Information relating to the elevation angle and azimuth of the aircraft with respect to the own device is emitted from the instrument landing device together with the station identification code, and the aircraft measures the elevation angle and the azimuth angle of the own aircraft as viewed from the instrument landing device based on the information. I do.
【０００９】一方、距離測定装置からは局識別符号とと
もに自装置に対する航空機の距離に関する情報が発射さ
れ、航空機側ではその情報に基づいて距離測定装置から
みた自機の距離を測定する。On the other hand, information on the distance of the aircraft to the own device is emitted from the distance measuring device together with the station identification code, and the aircraft measures the distance of the own aircraft as viewed from the distance measuring device based on the information.
【００１０】なお、発射周期については、例えば距離測
定装置は３０秒間に１回、計器着陸装置は３０秒間に３
回等というように、予め定められている。[0010] For the firing cycle, for example, the distance measuring device is once every 30 seconds, and the instrument landing device is three times every 30 seconds.
It is determined in advance, such as times.
【００１１】しかし、上述した従来の方式では、伝送路
が切れた場合等計器着陸装置から距離測定装置へ送られ
る外部キーイング信号に障害が発生した場合、距離測定
装置内部キーイング発生回路６と計器着陸装置装置のキ
ーイング発生回路３とが非同期で動作するため、計器着
陸装置と距離測定装置との局識別符号の送信タイミング
が重なって同時に発射され、モールス信号として認識さ
れないことがあるという欠点があった。However, in the above-mentioned conventional system, when a failure occurs in the external keying signal sent from the instrument landing device to the distance measuring device, for example, when the transmission line is cut off, the internal keying generation circuit 6 of the distance measuring device and the instrument landing device. Since the keying generation circuit 3 of the device and the device operate asynchronously, the transmission timings of the station identification code of the instrument landing device and the distance measuring device overlap, and they are fired at the same time and are not recognized as Morse code. .
【００１２】[0012]
【発明の目的】本発明は上述した従来の欠点を解決する
ためになされたものであり、その目的は計器着陸装置か
らの情報と距離測定装置からの情報とが重なって同時に
発射されることのない送出同期システムを提供すること
である。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional disadvantages, and has as its object the purpose that information from an instrument landing device and information from a distance measuring device are simultaneously fired simultaneously. There is no outgoing synchronization system to provide.
【００１３】[0013]
【発明の構成】本発明による送出同期システムは、自装
置の識別情報及び自装置に対する航空機の方角に関する
情報を所定タイミング毎に無線送出する第１の装置と、
自装置の識別情報及び自装置に対する航空機の距離に関
する情報を所定タイミング毎に無線送出する第２の装置
とを含む送出同期システムであって、前記第１及び第２
の装置の少なくとも一方に、他装置の無線送出情報を受
信する手段及びこの受信した他装置の識別情報に応じて
前記他装置の送出タイミングを判定する手段更にはこの
判定結果により前記他装置の送出タイミングと重ならな
いように自装置の情報を無線送出する手段を設けてなる
ことを特徴とする。A transmission synchronization system according to the present invention comprises: a first device for wirelessly transmitting identification information of its own device and information on the direction of an aircraft to its own device at predetermined timings;
A second device for wirelessly transmitting identification information of the own device and information on the distance of the aircraft to the own device at predetermined timings, wherein the first and second devices are provided.
Means for receiving the wireless transmission information of the other apparatus and means for determining the transmission timing of the other apparatus in accordance with the received identification information of the other apparatus. It is characterized in that a means for wirelessly transmitting information of the own device is provided so as not to overlap with the transmission timing of another device.
【００１４】[0014]
【実施例】次に、本発明について図面を参照して説明す
る。Next, the present invention will be described with reference to the drawings.
【００１５】図１は本発明による送出同期システムの一
実施例の構成を示すブロック図であり、図２と同等部分
は同一符号により示されている。FIG. 1 is a block diagram showing the configuration of an embodiment of a transmission synchronization system according to the present invention, and the same parts as those in FIG. 2 are denoted by the same reference numerals.
【００１６】図において、本例のシステムでは、距離測
定装置側に、計器着陸装置局識別符号を無線受信するた
めの受信アンテナ８を設け、さらにその受信信号をデコ
ードし、計器着陸装置のキーイングタイミングを判定し
て計器着陸装置キーイング信号と重ならないよう同期し
たトリガを発生する計器着陸装置局識別符号受信回路７
を含んで構成されている。In the figure, in the system of the present embodiment, a receiving antenna 8 for wirelessly receiving an instrument landing device station identification code is provided on the distance measuring device side, the received signal is decoded, and the keying timing of the instrument landing device is determined. And an instrument / landing station identification code receiving circuit 7 for generating a trigger synchronized with the instrument / landing apparatus keying signal so as not to overlap with the keying signal
It is comprised including.
【００１７】本例のシステムにおいては、計器着陸装置
の局識別符号の発射は、従来のものと同様に行われる。In the system of the present embodiment, the emission of the station identification code of the instrument landing gear is performed in the same manner as in the prior art.
【００１８】一方、距離測定装置側では、受信アンテナ
８で計器着陸装置の空中線から発射された電波を受信
し、その受信信号を計器着陸装置局識別符号受信回路７
でデコードする。そして、計器着陸装置のキーイング信
号の有無あるいはその信号の送出タイミングを判定し、
計器着陸装置キーイング信号とタイミングが重ならない
よう同期したトリガ信号を発生する。このトリガ信号で
距離測定装置の内部キーイング発生回路をトリガし、以
降、従来と同様に距離測定装置内部キーイング信号によ
り距離測定装置の局識別符号を発射する。これにより、
計器着陸装置及び距離測定装置の局識別符号同士が重な
って送出されることはなくなり、航空機側では方角及び
距離を正しく認識できるのである。On the other hand, on the distance measuring device side, a radio wave emitted from the antenna of the instrument landing device is received by the receiving antenna 8 and the received signal is transmitted to the instrument landing device station identification code receiving circuit 7.
To decode. Then, the presence or absence of the keying signal of the instrument landing gear or the transmission timing of the signal is determined,
Generates a trigger signal synchronized with the instrument landing gear keying signal so that the timing does not overlap. This trigger signal triggers the internal keying generation circuit of the distance measuring device, and thereafter, the station identification code of the distance measuring device is emitted by the distance measuring device internal keying signal as in the prior art. This allows
The station identification codes of the instrument landing device and the distance measurement device do not overlap each other and are transmitted, so that the aircraft can correctly recognize the direction and the distance.
【００１９】なお、受信アンテナ等を距離測定装置側で
はなく計器着陸装置側に設けても良いことは明らかであ
る。It is apparent that the receiving antenna and the like may be provided on the instrument landing device side instead of the distance measuring device side.
【００２０】また、上述の実施例においては、計器着陸
装置と距離測定装置とを併設する場合について説明した
が、山頂等のように超短波全方向式無線標識と距離測定
装置とを併設する場合についても本発明が適用できるこ
とは明らかである。In the above-described embodiment, the case where the instrument landing device and the distance measuring device are provided side by side has been described. However, the case where the ultra-high frequency omnidirectional radio sign and the distance measuring device are provided side by side like a mountaintop or the like is described. Obviously, the present invention can be applied to the present invention.
【００２１】[0021]
【発明の効果】以上説明したように本発明は、計器着陸
装置から電波発射される局識別符号を距離測定装置側で
受信して、その有無あるいはタイミングを判定したのち
距離測定装置局識別符号を発射するようにしたので、計
器着陸装置局識別符号と距離測定装置局識別符号とが重
なって同時に発射されることなく同期がとれるという効
果がある。As described above, according to the present invention, the station identification code radiated from the instrument landing device is received by the distance measuring device side, and the presence or absence or timing thereof is determined. Since the launching is performed, there is an effect that synchronization can be achieved without causing the instrument landing device station identification code and the distance measuring device station identification code to overlap and fire simultaneously.
【図１】本発明の実施例による送出同期システムの構成
を示すブロック図である。FIG. 1 is a block diagram showing a configuration of a transmission synchronization system according to an embodiment of the present invention.
【図２】従来の送出同期システムの構成を示すブロック
図である。FIG. 2 is a block diagram showing a configuration of a conventional transmission synchronization system.
１ 計器着陸装置空中線 ２ 計器着陸装置送信機 ３ キーイング発生回路 ４ 距離測定装置空中線 ５ 距離測定装置送信機 ６ 距離測定装置内部キーイング発生回路 ７ 計器着陸装置局識別符号受信回路 ８ 計器着陸装置局識別符号受信アンテナ 1 Instrument Landing Device Antenna 2 Instrument Landing Device Transmitter 3 Keying Generation Circuit 4 Distance Measurement Device Antenna 5 Distance Measurement Device Transmitter 6 Distance Measurement Device Internal Keying Generation Circuit 7 Instrument Landing Device Station Identification Code Receiving Circuit 8 Instrument Landing Device Station Identification Code Receiving antenna
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G01S 1/00 - 1/68 G01S 3/00 - 3/74 G01S 13/00 - 13/95 H04B 7/15Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) G01S 1/00-1/68 G01S 3/00-3/74 G01S 13/00-13/95 H04B 7/15
Claims (1)
空機の方角に関する情報を所定タイミング毎に無線送出
する第１の装置と、自装置の識別情報及び自装置に対す
る航空機の距離に関する情報を所定タイミング毎に無線
送出する第２の装置とを含む送出同期システムであっ
て、前記第１及び第２の装置の少なくとも一方に、他装
置の無線送出情報を受信する手段及びこの受信した他装
置の識別情報に応じて前記他装置の送出タイミングを判
定する手段更にはこの判定結果により前記他装置の送出
タイミングと重ならないように自装置の情報を無線送出
する手段を設けてなることを特徴とする送出同期システ
ム。A first device for wirelessly transmitting identification information of the own device and information on the direction of the aircraft to the own device at predetermined timings; A transmission synchronization system comprising: a second device for wirelessly transmitting the information to at least one of the first and second devices; a means for receiving wireless transmission information of another device;
Means for judging the transmission timing of the other device in accordance with the identification information of the device, and means for wirelessly transmitting the information of the own device based on the judgment result so as not to overlap with the transmission timing of the other device. Sending synchronization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5900892A JP2842023B2 (en) | 1992-02-12 | 1992-02-12 | Transmission synchronization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5900892A JP2842023B2 (en) | 1992-02-12 | 1992-02-12 | Transmission synchronization system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05223912A JPH05223912A (en) | 1993-09-03 |
| JP2842023B2 true JP2842023B2 (en) | 1998-12-24 |
Family
ID=13100837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5900892A Expired - Fee Related JP2842023B2 (en) | 1992-02-12 | 1992-02-12 | Transmission synchronization system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2842023B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0519945D0 (en) * | 2005-09-30 | 2005-11-09 | Cambridge Silicon Radio Ltd | Communication in dual protocol environments |
| US10432430B2 (en) * | 2016-07-08 | 2019-10-01 | Thales USA, Inc. | Triggering an identification signal broadcast of a first navigational aid equipment using a tone in the voice band transmitted by a second navigational aid equipment |
-
1992
- 1992-02-12 JP JP5900892A patent/JP2842023B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05223912A (en) | 1993-09-03 |
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