JPS6062739A - Satellite mounting device - Google Patents
Satellite mounting deviceInfo
- Publication number
- JPS6062739A JPS6062739A JP16939483A JP16939483A JPS6062739A JP S6062739 A JPS6062739 A JP S6062739A JP 16939483 A JP16939483 A JP 16939483A JP 16939483 A JP16939483 A JP 16939483A JP S6062739 A JPS6062739 A JP S6062739A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- band
- frequency
- transmission
- reception
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/208—Frequency-division multiple access [FDMA]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
【発明の詳細な説明】
(技術分野)
本発明は通信衛星に搭載する交換装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a switching device mounted on a communication satellite.
(背景技術)
従来のこの種装置例を第1図に示す。図中、■は入力端
子、2は受信部、3はチャネル分割器、4は復調器、5
は交換機、6は交換制御器、7は変調器、8はチャネル
合成器、9は送信部、10は送信部出力端子である。々
お、図中構成部1,2および3の添番号1〜Nは接続し
ている受信ビームの番号である。4の第1の添番号1〜
Nは接続している受信ビームの番号であり、第2の添番
号1〜Mは各受信ビーム中の5cpcチヤネルの番号で
ある。7の第1の添番号は接続する送信ビーム番号、第
2の添番号は各送信ビーム中の5cpcチヤネルの番号
である。8,9および10の添番号は接続する送信ビー
ム番号である。(Background Art) An example of a conventional device of this kind is shown in FIG. In the figure, ■ is an input terminal, 2 is a receiver, 3 is a channel divider, 4 is a demodulator, 5
6 is a switch, 6 is a switching controller, 7 is a modulator, 8 is a channel combiner, 9 is a transmitter, and 10 is a transmitter output terminal. The numbers 1 to N of the components 1, 2, and 3 in the figure are the numbers of the connected receiving beams. 4 first addition number 1~
N is the number of the connected receive beam, and the second appended numbers 1 to M are the numbers of the 5 cpc channels in each receive beam. The first prefix number 7 is the number of the transmit beam to be connected, and the second prefix number is the number of the 5 cpc channel in each transmit beam. The numbers 8, 9 and 10 are the transmission beam numbers to be connected.
受信マルチビームの各受信5cpc多重高周波信号を1
の受信部入力端子に接続し、2の受信部において増幅お
よび周波数変換して中間周波数帯信号とし、これを3の
チャネル分割器で5CPCの各チャネルを分割し4の復
調器により復調されたぺ−スパント信号とする。このベ
ースバンド信号を5の交換機において6の交換制御器の
指示により交換し、7の変調器及び8のチャネル合成器
により送信用5cpc信号をIF帯にて作り、9の送信
部において高周波信号に周波数変換および増幅し10
の送信部出力端子より送信用マルチビームアンテナへ接
線される。この装置例においてマルチビーム数Nを例え
ば10、各マルチビームに5CPC多重されるチャネル
数Mを5 、000とすると、4の復調器および7の変
調器の必要数はNXM −50,000となり5の交換
機も50 、000 X 50 、000の交換機と々
り衛星搭載装置は大きなものとなる欠点があった。Each received 5 cpc multiplex high frequency signal of the received multi-beam is
It is connected to the input terminal of the receiving section of , and is amplified and frequency-converted in the receiving section of 2 to produce an intermediate frequency band signal, which is divided into 5 CPC channels by the channel divider of 3 and demodulated by the demodulator of 4. -Spant signal shall be used. This baseband signal is exchanged in the exchanger 5 according to the instructions of the exchange controller 6, a modulator 7 and a channel combiner 8 generate a 5cpc signal for transmission in the IF band, and a transmitter 9 converts it into a high-frequency signal. Frequency conversion and amplification 10
The output terminal of the transmitting section is connected to the transmitting multi-beam antenna. In this device example, if the number N of multi-beams is 10, and the number M of channels multiplexed with 5 CPC in each multi-beam is 5,000, then the required number of demodulators of 4 and modulators of 7 is NXM -50,000, which is 5. However, a 50,000 x 50,000 exchanger had the disadvantage that the equipment on board the satellite would be large.
(発明の課題)
本発明はこれらの欠点を除去するため、受信信号を帯域
分割し帯域分割した信号ごとに送信先に交換することを
特徴とし、その目的は衛星搭載装置の簡易化にある。(Problem to be solved by the invention) In order to eliminate these drawbacks, the present invention is characterized in that a received signal is band-divided and each band-divided signal is exchanged with a destination, and its purpose is to simplify a satellite-mounted device.
(発明の構成および作用)
第2図は本発明の実施例であって、1の受信部(3)
入力端子、2の受信部、9の送信部および10の送信部
出力端子は添番号も含めて第1図と等しい。(Structure and operation of the invention) FIG. 2 shows an embodiment of the present invention, in which the receiving section 1 (3) input terminal, the receiving section 2, the transmitting section 9, and the transmitting section output terminal 10 are also numbered. Including, it is the same as Figure 1.
11は可変バンドパスフィルタ、12は可変周波数変換
器、13は合成器、14は制御器である。11および1
2の第1の添番号は接続している受信ビームの番号であ
り、第2の添番号は接続している送信ビームの番号であ
る。13の添番号は接続している送信ビームの番号であ
る。11 is a variable band pass filter, 12 is a variable frequency converter, 13 is a synthesizer, and 14 is a controller. 11 and 1
The first prefix number of 2 is the number of the connected receiving beam, and the second prefix number is the number of the connected transmitting beam. The number 13 is the number of the connected transmission beam.
受信マルチビーム(例えばビーム数N= 10)の各受
信5cpc多重高周波信号(例えば6 GHz帯、30
KHzチャネル間隔5,000チャネル多重波)を1の
受信部入力端子に接続し、2の受信部において増幅およ
び周波数変換(例えば400 A/IH2帯に変換)シ
、11の可変バンドパスフィルタにより帯域分割し、こ
の帯域分割信号(本例では帯域分割信号に含まれる5c
pcチヤネル数は平均500となる)を接続する送信ビ
ーム別に交換する。12の可変周波数変換器で、この帯
域分割信号を周波数変換(例えば800MH2帯に変換
)シ13の合成器で送信ビームを同じくする帯域分割信
号を合成し。Each received 5 cpc multiplex high frequency signal (for example, 6 GHz band, 30
A 5,000 KHz channel spacing (multiplexed wave with 5,000 KHz channels) is connected to the input terminal of the receiver section 1, and the receiver section 2 amplifies and converts the frequency (for example, to 400 A/IH2 band), and then converts the band using variable bandpass filters 11. This band-divided signal (in this example, the 5c included in the band-divided signal
(The average number of PC channels is 500) are exchanged for each connected transmission beam. A variable frequency converter 12 converts the frequency of this band-divided signal (for example, to 800 MH2 band), and a combiner 13 synthesizes band-divided signals that share the same transmission beam.
(4)
て送信用5cpc多重信号とする。なお、13の合成器
において合成される各帯域分割信号の周波数帯域は重複
しないように12の可変周波数変換器で周波数変換する
。送信用5cpc多重信号を9の送信部で周波数変換(
例えば4 GHz帯)および増幅し10の送信部出力端
子よりマルチビームアンテナを通シ送信マルチビームと
する。トラヒック変動等により送受のマルチビーム間の
接続チャネル数の構成に変更を行なう場合に、11の可
変フィルタの帯域および12の可変周波数変換器の変換
周波数帯域を変化させる。このときの制御は140制御
器により行なう。(4) A 5 cpc multiplexed signal for transmission is obtained. Note that the frequency bands of the respective band-divided signals synthesized by the 13 synthesizers are frequency-converted by 12 variable frequency converters so as not to overlap. The 5 cpc multiplexed signal for transmission is frequency converted (
For example, 4 GHz band) and amplify the multi-beam antenna from 10 transmitter output terminals to transmit multi-beams. When changing the configuration of the number of connected channels between transmitting and receiving multi-beams due to traffic fluctuations, etc., the band of the 11 variable filters and the conversion frequency band of the 12 variable frequency converters are changed. Control at this time is performed by the 140 controller.
なお、本発明の衛星装置を利用して地球局間で通信を行
なうときのチャネル割当で、各地球局の送信周波数は自
分が属する衛星受信ビームの周波数帯域内で相手局が属
する衛星送信ビームに交換される周波数帯域内のチャネ
ルを用いる。In channel assignment when communicating between earth stations using the satellite device of the present invention, the transmission frequency of each earth station is within the frequency band of the satellite reception beam to which it belongs and the satellite transmission beam to which the other station belongs. Channels within the frequency band being exchanged are used.
(発明の効果)
以上説明したように、本発明によりマルチビームで5C
PC方式を用いた衛星通信方式における衛星搭載の交換
装置が簡易化され、衛星が小型、軽量化される利点があ
る。(Effects of the Invention) As explained above, the present invention provides 5C with multiple beams.
This simplifies the exchange device mounted on the satellite in the satellite communication system using the PC system, and has the advantage that the satellite can be made smaller and lighter.
第1図は従来の衛星搭載装置例、第2図は本発明の一実
施例のブロック図である。
1・・・受信部入力端子、2・・・受信部、3・・・チ
ャネル分割器、4・・・復調器、5・・・交換機、 6
・・・交換制御器、7・・・変調器、 8・・・チャネ
ル合成器、9・・・送信部、10・・・送信部出力端子
、11・・・可変バンドパスフィルタ、
12・・・可変周波数変換器、
13・・・合成器、14・・・制御器。
特許出願人
日本電信電話公社
特許出願代理人
弁理士 山 本 恵 −FIG. 1 is an example of a conventional satellite-mounted device, and FIG. 2 is a block diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Receiving section input terminal, 2... Receiving section, 3... Channel splitter, 4... Demodulator, 5... Exchange, 6
... Exchange controller, 7... Modulator, 8... Channel combiner, 9... Transmitter, 10... Transmitter output terminal, 11... Variable band pass filter, 12... - Variable frequency converter, 13... combiner, 14... controller. Patent applicant Nippon Telegraph and Telephone Public Corporation Patent application agent Megumi Yamamoto −
Claims (1)
周波数分割多元接続方式を用い、マルチビームを用いた
衛星通信方式の衛星において、受信マルチビームの各受
信機出力信号をフィルタによシ周波数帯域分割し、この
帯域分割信号ごとに接続する送信ビームを振シ分け、送
信ビームの等しい帯域分割信号を各々帯域が重複するこ
とのないように周波数変換した後に合成し、合成信号を
送信機入力とし、各地球局の送信周波数は自分が属する
衛星受信ビームの周波数帯域内で相手局が属する衛星送
信ビームに交換される周波数帯域内のチャネルを用いる
ことを特徴とする衛星搭載装置。Using a frequency division multiple access system that allocates one carrier to one voice channel, in a satellite communication system using multi-beams, each receiver output signal of the received multi-beams is divided into frequency bands by a filter. , allocate the transmission beams to be connected for each of these band-divided signals, frequency-convert the equal band-divided signals of the transmission beams so that their bands do not overlap, and then combine them.The combined signal is used as the transmitter input, and each A satellite-mounted device characterized in that, as a transmission frequency of an earth station, a channel within a frequency band of a satellite reception beam to which the earth station belongs is exchanged with a satellite transmission beam to which a partner station belongs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16939483A JPS6062739A (en) | 1983-09-16 | 1983-09-16 | Satellite mounting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16939483A JPS6062739A (en) | 1983-09-16 | 1983-09-16 | Satellite mounting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6062739A true JPS6062739A (en) | 1985-04-10 |
Family
ID=15885781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16939483A Pending JPS6062739A (en) | 1983-09-16 | 1983-09-16 | Satellite mounting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6062739A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62188526A (en) * | 1985-11-27 | 1987-08-18 | ナシヨナル・エクスチエンジ・インコ−ポレイテツド | Communication system for providing communication routes between a plurality of communication point mutually |
JPS62227206A (en) * | 1986-03-29 | 1987-10-06 | Nec Corp | Filter bank |
JPH01500478A (en) * | 1986-08-14 | 1989-02-16 | ヒユーズ・エアクラフト・カンパニー | Satellite communication system using frequency reuse |
JPH01500558A (en) * | 1986-08-14 | 1989-02-23 | ヒユーズ・エアクラフト・カンパニー | Filter interconnection matrix |
JPH01500710A (en) * | 1986-08-14 | 1989-03-09 | ヒユーズ・エアクラフト・カンパニー | Satellite communication method and apparatus with frequency addressable high gain downlink beam |
JPH01500953A (en) * | 1986-08-14 | 1989-03-30 | ヒユーズ・エアクラフト・カンパニー | Satellite communication device with multiple downlink beams |
US5210454A (en) * | 1990-07-18 | 1993-05-11 | Asmo Co., Ltd. | Driving circuit for an ultrasonic motor |
US5526348A (en) * | 1993-09-24 | 1996-06-11 | Nec Corporation | Area radio communication with radio channels divided into channel groups |
US10454567B2 (en) | 2016-03-02 | 2019-10-22 | Mitsubishi Electric Corporation | Multi-beam satellite communication system |
-
1983
- 1983-09-16 JP JP16939483A patent/JPS6062739A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62188526A (en) * | 1985-11-27 | 1987-08-18 | ナシヨナル・エクスチエンジ・インコ−ポレイテツド | Communication system for providing communication routes between a plurality of communication point mutually |
JPS62227206A (en) * | 1986-03-29 | 1987-10-06 | Nec Corp | Filter bank |
JPH01500478A (en) * | 1986-08-14 | 1989-02-16 | ヒユーズ・エアクラフト・カンパニー | Satellite communication system using frequency reuse |
JPH01500558A (en) * | 1986-08-14 | 1989-02-23 | ヒユーズ・エアクラフト・カンパニー | Filter interconnection matrix |
JPH01500710A (en) * | 1986-08-14 | 1989-03-09 | ヒユーズ・エアクラフト・カンパニー | Satellite communication method and apparatus with frequency addressable high gain downlink beam |
JPH01500953A (en) * | 1986-08-14 | 1989-03-30 | ヒユーズ・エアクラフト・カンパニー | Satellite communication device with multiple downlink beams |
JPH0552099B2 (en) * | 1986-08-14 | 1993-08-04 | Hughes Aircraft Co | |
JPH0552098B2 (en) * | 1986-08-14 | 1993-08-04 | Hughes Aircraft Co | |
US5210454A (en) * | 1990-07-18 | 1993-05-11 | Asmo Co., Ltd. | Driving circuit for an ultrasonic motor |
US5526348A (en) * | 1993-09-24 | 1996-06-11 | Nec Corporation | Area radio communication with radio channels divided into channel groups |
US10454567B2 (en) | 2016-03-02 | 2019-10-22 | Mitsubishi Electric Corporation | Multi-beam satellite communication system |
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