JPH01241203A - Digital beam forming device - Google Patents
Digital beam forming deviceInfo
- Publication number
- JPH01241203A JPH01241203A JP6891688A JP6891688A JPH01241203A JP H01241203 A JPH01241203 A JP H01241203A JP 6891688 A JP6891688 A JP 6891688A JP 6891688 A JP6891688 A JP 6891688A JP H01241203 A JPH01241203 A JP H01241203A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- calibration
- receiving unit
- pseudo
- digital
- 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
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 241000026407 Haya Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ディジタルビームフォーミング装置に関し
、特にその各受信ユニットのばらつきを補正する校正手
段の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital beamforming device, and particularly to an improvement in a calibration means for correcting variations in each receiving unit.
従来、この種の装置として例えば第4図、第5図に示す
ものがあった。第4図、第5図において、1は受波器、
3は受信信号周波数fRの信号を増幅する増幅器、4は
周波数変換器、5は中間周波増幅器、6は検波器および
A/D変換器を備えた受信部、7はそれらを収納した受
信ユニット、8は複数の受信ユニット7より送られてく
るディジタル信号を処理してビーム形成するディジタル
ビーム形成器、9は局部信号発生部、11は受信信号周
波数fえの信号の放射器、10は受信信号周波数を発生
する1疑似信号発生部である。Conventionally, there have been devices of this type, such as those shown in FIGS. 4 and 5, for example. In Figures 4 and 5, 1 is a receiver;
3 is an amplifier that amplifies the signal of the received signal frequency fR, 4 is a frequency converter, 5 is an intermediate frequency amplifier, 6 is a receiving section equipped with a wave detector and an A/D converter, 7 is a receiving unit that houses them, 8 is a digital beamformer that processes digital signals sent from a plurality of receiving units 7 and forms a beam; 9 is a local signal generator; 11 is a signal radiator with a reception signal frequency f; 10 is a reception signal This is one pseudo signal generator that generates a frequency.
次に動作について説明する。1疑似体号発生部10で発
生した周波数f8の擬似受信信号は放射器11より空間
に放出され、受波器1で受信され、受信ユニット7の増
幅器3で低雑音増幅され、周波数変換器4で局部信号発
生器9から送られてくる周波数fM flFの局部
信号と混合され、中間周波数flFに変換される。fl
Fに変換された受信信号は中間周波増幅器5で増幅され
、受信部6で信号検出されディジタル変換されて、ディ
ジタルビーム形成器8に校正信号C4(i=0〜n−1
)として送られる。Next, the operation will be explained. 1 A pseudo received signal of frequency f8 generated by the pseudo body signal generator 10 is emitted into space from the radiator 11, received by the receiver 1, amplified with low noise by the amplifier 3 of the receiving unit 7, and then sent to the frequency converter 4. It is mixed with a local signal of frequency fM flF sent from the local signal generator 9 and converted to an intermediate frequency flF. fl
The received signal converted to F is amplified by an intermediate frequency amplifier 5, detected by a receiving section 6, converted into a digital signal, and sent to a digital beamformer 8 as a calibration signal C4 (i=0 to n-1).
) is sent as
ディジタルビーム形成器8は各受信ユニットから送られ
てきた校正信号C6−cn−+を処理し、基準値として
保存しておく。The digital beamformer 8 processes the calibration signal C6-cn-+ sent from each receiving unit and stores it as a reference value.
次に本来の受信信号fR3が受信された場合にディジタ
ルビーム形成器9に送られてくる信号を5o−sn−+
とすると、前記基準値と演算処理してS; −C+
(i=0〜n−1)としてビーム形成すれば、各受信
ユニットの振幅1位相のばらつきも補正されてビーム形
成が行われる。Next, when the original received signal fR3 is received, the signal sent to the digital beamformer 9 is 5o-sn-+
Then, by calculating with the reference value, S; −C+
If beam formation is performed with (i=0 to n-1), the variation in amplitude and one phase of each receiving unit is also corrected and beam formation is performed.
従来のディジタルビームフォーミング装置は以上のよう
に構成されているので、外部に放射器が必要で、その設
置場所も自由に移動させるわけにはいかず、運用上かな
りの制約になった。また気象条件によっても擬似信号の
伝搬損失や位相が容易に変化したりするため、校正を@
繁に行わないと正確な校正ができない等の問題があった
。Conventional digital beamforming devices are configured as described above, so they require an external radiator, and the installation location cannot be moved freely, which poses considerable operational constraints. Also, the propagation loss and phase of the pseudo signal can easily change depending on weather conditions, so calibration is required @
There was a problem that accurate calibration could not be performed unless it was done frequently.
この発明は上記のような問題点を解消するためになされ
たもので、外部装置を必要とせずに校正を行えるディジ
タルビームフォーミング装置を得ることを目的とする。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a digital beam forming device that can perform calibration without requiring an external device.
この発明に係るディジタルビームフォーミング装置は、
受信信号と同じ周波数の擬似信号を発生して各受信ユニ
・ノドに送り、信号注入手段で各受信ユニットに擬似信
号を注入するようにしたものである。The digital beam forming device according to the present invention includes:
A pseudo signal having the same frequency as the received signal is generated and sent to each receiving unit node, and a signal injection means injects the pseudo signal into each receiving unit.
この発明においては、上述のように構成することにより
擬似18号と局部信号とを受信ユニット内で混合して中
間周波数に変換し、校正信号を得られるようにしたので
、運用上の制約や気象条件に左右されることなく校正を
行うことが可能となる。In this invention, by configuring as described above, the pseudo No. 18 signal and the local signal are mixed in the receiving unit and converted to an intermediate frequency, and a calibration signal can be obtained. It becomes possible to perform calibration without being influenced by conditions.
以下、この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第1図は本発明の一実施例によるディジタルビームフォ
ーミング装置を示し、図において、1は受波器、2は切
換器(信号注入手段)、3は低雑音増幅器、4は周波数
変換器、5は中間周波数増幅器、6は検波し、A/D変
換を行う受信部、7はそれらが収納された受信ユニット
、8は各受信ユニットからのディジタル信号を処理し、
ビーム形成するディジタルビーム形成器、9は局部信号
発生部、10は擬似信号発生部である。FIG. 1 shows a digital beamforming device according to an embodiment of the present invention, in which 1 is a receiver, 2 is a switch (signal injection means), 3 is a low noise amplifier, 4 is a frequency converter, and 5 is a receiver. is an intermediate frequency amplifier; 6 is a receiving section that performs wave detection and A/D conversion; 7 is a receiving unit in which these are housed; 8 is a receiving unit that processes digital signals from each receiving unit;
A digital beamformer forms a beam, 9 is a local signal generator, and 10 is a pseudo signal generator.
次に動作について説明する。Next, the operation will be explained.
擬似信号発生部10で発生したfRの信号は各受信ユニ
ット7に送られ、切換器2に入る。切換器2は校正時、
C側に切換ねっており、上記fRの信号は低雑音増幅器
3へと送られ増幅されて周波数変換器4に入り、局部信
号発生器9からの信号fRflFと混合されてf□、の
中間周波数に変換される。この中間周波数flFに変換
された信号は受信部6にて検波され、A/D変換されて
校正信号C1としてディジタルビーム形成器8に送られ
る。ディジタルビーム形成器8は各受信ユニットから送
られてきた校正信号C9〜cn−+を処理し基準値とし
て保存しておく。次に受信時には切換器2をS側に切換
えれば、同様な処理が行われて、ディジタルビーム形成
器8に受信信号S。〜57−1が入力され、前記基準値
と5H−CH(i−〇〜n−1)として演算処理してビ
ーム形成すれば各受信ユニットの振幅2位相ばらつきも
補正されてビーム形成が行われる。The fR signal generated by the pseudo signal generator 10 is sent to each receiving unit 7 and enters the switch 2. When calibrating switch 2,
The signal of fR is sent to the low noise amplifier 3, amplified, and enters the frequency converter 4, where it is mixed with the signal fRflF from the local signal generator 9 and converted to the intermediate frequency of f□. is converted to The signal converted to the intermediate frequency flF is detected by the receiving section 6, A/D converted, and sent to the digital beam former 8 as a calibration signal C1. The digital beamformer 8 processes the calibration signals C9 to cn-+ sent from each receiving unit and stores them as reference values. Next, when receiving, if the switch 2 is switched to the S side, the same processing is performed and the received signal S is sent to the digital beamformer 8. ~57-1 is input, and if the reference value and 5H-CH (i-〇~n-1) are processed and beam formed, the amplitude 2-phase variation of each receiving unit is also corrected and beam formation is performed. .
なお、上記実施例では、切換器2を用いたものを示した
が、第3図のように方向性結合器12を設けても良い。In the above embodiment, the switching device 2 is used, but a directional coupler 12 may be provided as shown in FIG.
この場合は、切換動作が不要となり、擬似信号fRを任
意の時刻に入力できるので、送信時刻の一部あるいは受
信時刻の一部を校正に利用できるようになる。In this case, no switching operation is required and the pseudo signal fR can be input at any time, so that part of the transmission time or part of the reception time can be used for calibration.
以上のように、この発明に係るディジタルビームフォー
ミング装置によれば、擬似信号を各受信ユニットに送り
各受信ユニットは注入された擬似信号を用いて校正信号
を得るように構成したので、外部装置が不要で、気象条
件にあまり左右されることな(校正が行え、校正精度を
大幅に向上できるという効果がある。As described above, according to the digital beamforming device according to the present invention, the pseudo signal is sent to each receiving unit and each receiving unit uses the injected pseudo signal to obtain a calibration signal. It is not necessary and does not depend much on weather conditions (it has the effect of being able to perform calibration and greatly improving calibration accuracy).
第1図はこの発明の一実施例によるディジタルビームフ
ォーミング装置の受信ユニットのブロック図、第2図は
この発明のディジタルビームフォーミング装置の全体の
ブロック図、第3図はこの発明の他の実施例を示す図、
第4図、第5図は従来のディジタルビームフォーミング
装置の受信ユニットと全体のブロック図である。
図において、1は受波器、2は切換器(信号注入手段)
、4は周波数変換器、6は受信部、9は局部信号発生部
、10は凝似信号発生部、12は方向性結合器((δ号
注入手段)である。
なお図中同一符号は同−又は相当部分を示す。
代理人 早 :4n 憲 −
第1図
第3図
12り、f;7グαが汝SFIG. 1 is a block diagram of a receiving unit of a digital beamforming device according to an embodiment of the invention, FIG. 2 is a block diagram of the entire digital beamforming device of the invention, and FIG. 3 is another embodiment of the invention. A diagram showing
FIGS. 4 and 5 are block diagrams of the receiving unit and the entire conventional digital beamforming device. In the figure, 1 is a receiver, 2 is a switch (signal injection means)
, 4 is a frequency converter, 6 is a receiving section, 9 is a local signal generating section, 10 is a condensed signal generating section, and 12 is a directional coupler ((δ injection means). The same reference numerals in the figures are the same. - or a corresponding part. Agent Haya: 4n Constitution - Figure 1 Figure 3 12, f;
Claims (1)
局部信号と混合して中間周波数に変換する周波数変換器
、および前記中間周波数信号を復調する受信部とを有す
る複数個の受信ユニットと、校正信号を記憶しこれと前
記受信ユニットの受信信号とをディジタル信号処理して
各受信ユニットのばらつきを補正しビーム形成を行うデ
ィジタルビーム形成器とを備えたディジタルビームフォ
ーミング装置において、 前記受信信号の周波数と同じ周波数の擬似信号を発生す
る擬似信号発生部と、 各受信ユニットにおいて前記受波器と周波数変換器との
間に設けられ、前記受信信号または前記擬似信号を前記
周波数変換器に入力するための信号注入手段とを備え、 前記校正信号を、前記受信ユニットに前記擬似信号を入
力した際の復調信号として得るようにしたことを特徴と
するディジタルビームフォーミング装置。(1) A plurality of receivers each having a receiver for receiving a received signal, a frequency converter for mixing the received signal with a local signal and converting it into an intermediate frequency, and a receiving section for demodulating the intermediate frequency signal. A digital beamforming device comprising a receiving unit and a digital beamformer that stores a calibration signal and performs digital signal processing on this and a received signal of the receiving unit to correct variations in each receiving unit and form a beam, a pseudo signal generating section that generates a pseudo signal of the same frequency as the frequency of the received signal; and a pseudo signal generator provided between the receiver and the frequency converter in each receiving unit, converting the received signal or the pseudo signal into the frequency converter. a signal injection means for inputting the pseudo signal to the receiving unit, the digital beam forming apparatus comprising: a signal injection means for inputting the pseudo signal to the receiving unit;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6891688A JPH01241203A (en) | 1988-03-22 | 1988-03-22 | Digital beam forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6891688A JPH01241203A (en) | 1988-03-22 | 1988-03-22 | Digital beam forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01241203A true JPH01241203A (en) | 1989-09-26 |
Family
ID=13387456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6891688A Pending JPH01241203A (en) | 1988-03-22 | 1988-03-22 | Digital beam forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01241203A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000060698A1 (en) * | 1999-03-31 | 2000-10-12 | Matsushita Electric Industrial Co., Ltd. | Radio transmitter and transmission directivity adjusting method |
WO2000060766A1 (en) * | 1999-04-01 | 2000-10-12 | Matsushita Electric Industrial Co., Ltd. | Array-antenna radio communication device |
WO2001052446A1 (en) * | 2000-01-13 | 2001-07-19 | Matsushita Electric Industrial Co., Ltd. | Array antenna radio communication apparatus and calibration method |
-
1988
- 1988-03-22 JP JP6891688A patent/JPH01241203A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000060698A1 (en) * | 1999-03-31 | 2000-10-12 | Matsushita Electric Industrial Co., Ltd. | Radio transmitter and transmission directivity adjusting method |
US6600935B1 (en) | 1999-03-31 | 2003-07-29 | Matsushita Electric Industrial Co., Ltd. | Radio transmission device and transmission directivity adjusting method |
WO2000060766A1 (en) * | 1999-04-01 | 2000-10-12 | Matsushita Electric Industrial Co., Ltd. | Array-antenna radio communication device |
US6594509B1 (en) | 1999-04-01 | 2003-07-15 | Matsushita Electric Industrial Co., Ltd. | Array-antenna radio communication apparatus |
WO2001052446A1 (en) * | 2000-01-13 | 2001-07-19 | Matsushita Electric Industrial Co., Ltd. | Array antenna radio communication apparatus and calibration method |
US6559799B2 (en) | 2000-01-13 | 2003-05-06 | Matsushita Electric Industrial Co., Ltd. | Array antenna radio communication apparatus and calibration method |
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