JPH05167344A - Rotary wing position detecting and switching antenna - Google Patents
Rotary wing position detecting and switching antennaInfo
- Publication number
- JPH05167344A JPH05167344A JP35273491A JP35273491A JPH05167344A JP H05167344 A JPH05167344 A JP H05167344A JP 35273491 A JP35273491 A JP 35273491A JP 35273491 A JP35273491 A JP 35273491A JP H05167344 A JPH05167344 A JP H05167344A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- rotary wing
- helicopter
- antennas
- transmission
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はヘリコプタの機体に設
置する衛星通信用アンテナ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite communication antenna device installed in a helicopter body.
【０００２】[0002]
【従来の技術】図３はヘリコプタ機体に設置された従来
の空間ダイバーシチを構成する衛星通信用アンテナの配
置例を示す図である。説明を簡単にするために一対のア
ンテナの場合について示している。図４は代表的な従来
の考え方に基づくヘリコプタの衛星通信用のアンテナ装
置を含む送受信系統を示すブロック構成図である。図
３，４において、１ａ，１ｂは一対のアンテナ、２はヘ
リコプタの回転翼、３はヘリコプタの機体、４ａ，４ｂ
は送受分離器、５ａ，５ｂは受信部、６は受信合成部、
７は送信切換器、８は送信部である。2. Description of the Related Art FIG. 3 is a diagram showing an example of arrangement of satellite communication antennas which constitute a conventional space diversity installed in a helicopter airframe. The case of a pair of antennas is shown to simplify the description. FIG. 4 is a block diagram showing a transmission / reception system including an antenna device for satellite communication of a helicopter based on a typical conventional idea. In FIGS. 3 and 4, 1a and 1b are a pair of antennas, 2 is a helicopter rotor blade, 3 is a helicopter fuselage, and 4a and 4b.
Is a transmission / reception separator, 5a and 5b are reception units, 6 is a reception synthesis unit,
Reference numeral 7 is a transmission switch, and 8 is a transmission unit.
【０００３】次に動作について図３，４を参照して説明
する。衛星通信用のアンテナ１ａ，１ｂは、受信波フェ
ージングに対して空間ダイバーシチ効果が成立するλ／
２（λ：電波波長）以上離してヘリコプタ機体３に設置
され、通信衛星を介して通信の相手方との送受信に用い
られる。送受信の際に、アンテナ１ａ，１ｂから通信衛
星を見る方向が回転翼２により周期的に遮られるため、
その都度、送受信信号レベルの低下、もしくは瞬断を来
たすことになる。従って、受信に関しては、アンテナ１
ａから送受分離器４ａを介して受信部５ａで受信される
間欠的な信号と、アンテナ１ｂから送受分離器４ｂを介
して受信部５ｂで受信されるタイミングを異にする間欠
信号を受信合成部６で加算することにより連続した受信
を可能にしている。また、送信に関しては、アンテナか
ら通信衛星を見る方向が回転翼２に遮られ障害を受けな
いように、送信部８と送受分離器４ａ，４ｂとの間に設
けてある送信切換器７を回転翼のタイミングに基づいて
切換えて、アンテナ１ａ、もしくは１ｂいずれかに対応
する送受分離器４ａ、もしくは４ｂを介して送信を行
う。他の従来例として、送信に関して、送信切換器７を
回転翼タイミングに基づいて切換えをせず、受信系統と
同様に送信系統を２系統設けて送信し、通信の相手方で
受信合成を行う方式もある。Next, the operation will be described with reference to FIGS. The antennas 1a and 1b for satellite communication have a space diversity effect of λ /
It is installed on the helicopter body 3 at a distance of 2 (λ: radio wave wavelength) or more, and is used for transmission / reception with a communication partner via a communication satellite. During transmission and reception, the direction in which the communication satellites are viewed from the antennas 1a and 1b is periodically blocked by the rotor 2.
Each time, the level of the transmitted / received signal drops or a momentary interruption occurs. Therefore, regarding reception, the antenna 1
an intermittent signal received by the receiving unit 5a from the transmission / reception separator 4a and an intermittent signal having a different timing received by the receiving unit 5b from the antenna 1b via the transmission / reception separator 4b. The addition of 6 enables continuous reception. Regarding transmission, the transmission switching unit 7 provided between the transmission unit 8 and the transmission / reception separators 4a and 4b is rotated so that the direction in which the communication satellite is viewed from the antenna is not obstructed by the rotor 2. Switching is performed based on the timing of the blade, and transmission is performed via the transmission / reception separator 4a or 4b corresponding to either the antenna 1a or 1b. As another conventional example, regarding transmission, there is also a method in which the transmission switching device 7 is not switched based on the rotor blade timing, two transmission systems are provided similarly to the reception system, and transmission is performed by the other party of communication. is there.
【０００４】[0004]
【発明が解決しようとする課題】従来のアンテナ装置は
以上のように構成されているので、ヘリコプタ機体に設
置されるアンテナの設置間隔はヘリコプタの回転翼との
関係の他に空間ダイバーシチとしての制約があり、アン
テナ設置位置の自由度が小さくなるという課題があっ
た。また、アンテナ装置を含む送受信系統に関しては、
２重の受信系統が必要となり、場合によっては２重の送
信系統も必要となるので、構成が複雑となり、搭載機器
の容積、重量が増すとともに消費電力も大きくなるとい
う課題があった。Since the conventional antenna device is constructed as described above, the installation intervals of the antennas installed on the helicopter body are restricted by the space diversity in addition to the relationship with the rotor blades of the helicopter. However, there is a problem that the degree of freedom of the antenna installation position is reduced. Regarding the transmission / reception system including the antenna device,
Since a double reception system is required and a double transmission system is required in some cases, there is a problem that the configuration becomes complicated, the volume and weight of the mounted device increase, and the power consumption increases.
【０００５】この発明は上記のような課題を解消するた
めになされたもので、ヘリコプタ機体に設置する衛星通
信用アンテナの装備設計が容易となるとともに、このア
ンテナ装置を含む送受信系統の構成を簡単化して、搭載
機器全体の容積、重量、消費電力を小さくすることので
きる回転翼検知切換えアンテナ装置を得ることを目的と
している。The present invention has been made to solve the above problems, and facilitates equipment design of a satellite communication antenna to be installed in a helicopter body, and simplifies the structure of a transmission / reception system including this antenna device. It is an object of the present invention to provide a rotary blade detection switching antenna device that can reduce the volume, weight, and power consumption of the entire mounted device.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めに、この発明に係る回転翼検知切換えアンテナ装置
は、少なくとも一つのアンテナから通信衛星を見る方向
がヘリコプタの回転翼により遮られるとき、他のアンテ
ナから通信衛星を見る方向がヘリコプタの回転翼により
遮られない位置に配置されている複数のアンテナと、回
転翼の位置を検知する複数の検知器とを備え、上記検知
器の信号に基づいて該アンテナを切換えるようにしたも
のである。In order to achieve the above object, a rotor blade detection switching antenna device according to the present invention, when the direction in which a communication satellite is viewed from at least one antenna is blocked by a rotor blade of a helicopter, A plurality of antennas arranged at a position where the direction of viewing the communication satellite from other antennas is not obstructed by the rotor of the helicopter, and a plurality of detectors for detecting the position of the rotor are provided. The antenna is switched based on this.
【０００７】[0007]
【作用】上記のように構成されたこの発明の回転翼検知
切換えアンテナ装置では、ヘリコプタ機体へのアンテナ
設置位置は空間ダイバーシチの条件を採ることなく、ア
ンテナと回転翼の位置関係のみで決まることにより、ア
ンテナ設置位置の自由度が増し、またアンテナから通信
衛星を見る方向がヘリコプタの回転翼により遮蔽されな
いように回転翼検知器により、いずれかのアンテナに切
換えることにより、送受信それぞれ１系統の構成で連続
通信が可能となる。In the rotor blade detection switching antenna apparatus of the present invention configured as described above, the antenna installation position on the helicopter body is determined only by the positional relationship between the antenna and the rotor blade without taking the space diversity condition. By increasing the degree of freedom of the antenna installation position and switching to either of the antennas by the rotor blade detector so that the direction in which the communication satellite is viewed from the antenna is not shielded by the rotor blades of the helicopter, it is possible to configure one transmission and one transmission system respectively. Continuous communication is possible.
【０００８】[0008]
【実施例】実施例１．以下、この発明の実施例１につい
て説明する。図１はこの発明の回転翼検知切換えアンテ
ナ装置のアンテナと回転翼検知器の配置を説明する図で
ある。図２はこの発明の回転翼検知切換えアンテナ装置
を含む送受信系統を示すブロック構成図である。図１，
２において、１ａ，１ｂはヘリコプタ機体に設置された
一対のアンテナ、２はヘリコプタの回転翼、３はヘリコ
プタの機体、４は送受分離器、５は受信部、８は送信
部、９ａ，９ｂは回転翼検知器、１０はアンテナ切換器
である。EXAMPLES Example 1. The first embodiment of the present invention will be described below. FIG. 1 is a view for explaining the arrangement of an antenna and a rotary blade detector of the rotary blade detection switching antenna device of the present invention. FIG. 2 is a block diagram showing a transmission / reception system including the rotary blade detection switching antenna device of the present invention. Figure 1,
In FIG. 2, 1a and 1b are a pair of antennas installed on the helicopter airframe, 2 is a helicopter rotor blade, 3 is a helicopter airframe, 4 is a transmission / reception separator, 5 is a receiving unit, 8 is a transmitting unit, and 9a and 9b are Rotor detectors 10 are antenna switches.
【０００９】ヘリコプタ機体に設置する一対のアンテナ
１ａ，１ｂと回転翼検知器９ａ，９ｂの配置は、例えば
回転翼２の移動方向が図１，図２に示す矢印方向とする
と、回転翼検知器９ａ、アンテナ１ａ、回転翼検知器９
ｂ、アンテナ１ｂの順に交互に機体３上に配置し、一方
のアンテナ１ａから通信衛星を見る方向が回転翼２によ
り遮られている時は、他方のアンテナ１ｂから通信衛星
を見る方向が回転翼により遮られず視界が空いている位
置関係に配置する。The pair of antennas 1a and 1b and the rotor blade detectors 9a and 9b installed on the helicopter body are arranged, for example, when the moving direction of the rotor blade 2 is the arrow direction shown in FIGS. 1 and 2. 9a, antenna 1a, rotor detector 9
b and the antenna 1b are alternately arranged on the fuselage 3, and when the direction in which the communication satellite is viewed from one antenna 1a is blocked by the rotor 2, the direction in which the communication satellite is viewed from the other antenna 1b is the rotor. It is placed in a position where it is not blocked by and has a clear view.
【００１０】回転翼２を回転翼検知器９ａが検知した時
は、アンテナ１ｂの視界は空いているのでアンテナ１ｂ
と送受分離器４とが接続するようにアンテナ切換器１０
を駆動し、回転翼２が移動して回転翼検知器９ｂが検知
した時は、アンテナ１ａの視界が空いているのでアンテ
ナ１ａと送受分離器４とが接続するようにアンテナ切換
器１０を駆動する。回転翼２の翼が回って来るたびに上
記のアンテナ切換えを繰り返す。上記実施例１では一対
のアンテナの切換えを例にあげ説明したが、一対のアン
テナに限るものでなく、任意の複数のアンテナについて
も同様の考えに基づき切換えることにより同様の効果を
奏する。When the rotor blade 9 is detected by the rotor blade detector 9a, the field of view of the antenna 1b is empty, so the antenna 1b
The antenna switching device 10 so that the transmission / reception separator 4 is connected to
When the rotor blade 2 moves and the rotor blade detector 9b detects it, the antenna switch 10 is driven so that the antenna 1a and the transmission / reception separator 4 are connected because the field of view of the antenna 1a is open. To do. The above antenna switching is repeated every time the wing of the rotary wing 2 comes around. In the first embodiment, the switching of the pair of antennas has been described as an example, but the present invention is not limited to the pair of antennas, and a plurality of arbitrary antennas can achieve the same effect by switching based on the same idea.
【００１１】実施例２．実施例１では回転翼検知器につ
いて、アンテナ装置の一部として説明したが、ヘリコプ
タ機体の回転翼ロータ側で検出してもよく、上記実施例
１と同様の効果を奏する。Embodiment 2. Although the rotor blade detector is described as a part of the antenna device in the first embodiment, it may be detected on the rotor blade side of the helicopter body, and the same effect as that of the first embodiment is obtained.
【００１２】[0012]
【発明の効果】以上のようにこの発明によれば、アンテ
ナの設置位置の自由度が増し、複雑なヘリコプタ機体へ
のアンテナ装備設計を簡単にすることができ、また、送
受信系統の構成が簡単化し、搭載機器全体の容積、重
量、消費電力を小さくすることのできる回転翼検知切換
えアンテナ装置を得ることができる。As described above, according to the present invention, the degree of freedom in the installation position of the antenna is increased, the antenna equipment design for a complicated helicopter body can be simplified, and the structure of the transmission / reception system is simple. Therefore, it is possible to obtain a rotary blade detection switching antenna device that can reduce the volume, weight, and power consumption of the entire mounted device.
【図１】この発明の回転翼検知切換えアンテナ装置のア
ンテナと回転翼検知器の配置関係を説明する図である。FIG. 1 is a diagram for explaining a positional relationship between an antenna and a rotary blade detector of a rotary blade detection switching antenna device of the present invention.
【図２】この発明の回転翼検知切換えアンテナ装置を含
む送受信系統を示すブロック構成図である。FIG. 2 is a block diagram showing a transmission / reception system including a rotary blade detection switching antenna device of the present invention.
【図３】従来のヘリコプタ機体に設置された衛星通信用
アンテナの配置例を示す図である。FIG. 3 is a diagram showing an arrangement example of satellite communication antennas installed in a conventional helicopter airframe.
【図４】従来の考え方に基づく代表的な衛星通信用アン
テナを含む送受信系統を示すブロック構成図である。FIG. 4 is a block diagram showing a transmission / reception system including a typical satellite communication antenna based on a conventional concept.
１ａ，１ｂ アンテナ ２ ヘリコプタの回転翼 ３ ヘリコプタの機体 ４ 送受分離器 ５ 受信部 ８ 送信部 ９ａ，９ｂ 回転翼検知器 １０ アンテナ切換器 1a, 1b Antenna 2 Helicopter rotor blade 3 Helicopter body 4 Transmitter / receiver separator 5 Receiver 8 Transmitter 9a, 9b Rotor detector 10 Antenna switcher
Claims (1)
アンテナ装置であって、少なくとも一つのアンテナから
通信衛星を見る方向がヘリコプタの回転翼により遮られ
るとき、他のアンテナから通信衛星を見る方向がヘリコ
プタの回転翼により遮られない位置に配置されている複
数のアンテナと、回転翼の位置を検知する複数の検知器
とを備え、上記検知器の信号に基づいて該アンテナを切
換えることを特徴とする回転翼検知切換えアンテナ装
置。1. An antenna device for satellite communication installed in a helicopter body, wherein when the direction of viewing a communication satellite from at least one antenna is blocked by a rotor of a helicopter, the direction of viewing a communication satellite from another antenna is changed. A plurality of antennas arranged at a position not blocked by the rotor of the helicopter, and a plurality of detectors for detecting the position of the rotor, wherein the antennas are switched based on a signal from the detector. Rotating blade detection switching antenna device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35273491A JPH05167344A (en) | 1991-12-16 | 1991-12-16 | Rotary wing position detecting and switching antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35273491A JPH05167344A (en) | 1991-12-16 | 1991-12-16 | Rotary wing position detecting and switching antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05167344A true JPH05167344A (en) | 1993-07-02 |
Family
ID=18426073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35273491A Pending JPH05167344A (en) | 1991-12-16 | 1991-12-16 | Rotary wing position detecting and switching antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05167344A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952981A (en) * | 1995-08-24 | 1999-09-14 | Mcc Corporation | Antenna for reducing an effect of a radio wave blocking obstacle |
| US10873487B1 (en) | 2018-03-05 | 2020-12-22 | Mitsubishi Electric Corporation | Communication device, method for predicting interruption, control circuit, and program recording medium |
-
1991
- 1991-12-16 JP JP35273491A patent/JPH05167344A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952981A (en) * | 1995-08-24 | 1999-09-14 | Mcc Corporation | Antenna for reducing an effect of a radio wave blocking obstacle |
| US10873487B1 (en) | 2018-03-05 | 2020-12-22 | Mitsubishi Electric Corporation | Communication device, method for predicting interruption, control circuit, and program recording medium |
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