CN106533540A - Spaceborne multichannel digital flexible transponder hardware platform - Google Patents
Spaceborne multichannel digital flexible transponder hardware platform Download PDFInfo
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- CN106533540A CN106533540A CN201611080253.XA CN201611080253A CN106533540A CN 106533540 A CN106533540 A CN 106533540A CN 201611080253 A CN201611080253 A CN 201611080253A CN 106533540 A CN106533540 A CN 106533540A
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- fpga
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- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention discloses a spaceborne multichannel digital flexible transponder hardware platform. The spaceborne multichannel digital flexible transponder hardware platform comprises multiple channel units, an exchange unit, a power supply unit and a clock unit. The spaceborne multichannel digital flexible transponder hardware platform relates to the high-adaptability spaceborne multichannel digital flexible transponder hardware platform design technology, firstly, two-times down conversion, filtering and numerical control of signals of multiple channels are carried out, after passing through an A/D converter, sub channel separation of the signals is carried out, after through multichannel sub channel integral exchange, sub channel integration and processing through a D/A converter, the signals are then sent out after numerical control, two-times upconversion and filtering, and the power supply unit and the clock unit are further configured. The spaceborne multichannel digital flexible transponder hardware platform is advantaged in that simple design, compact structure, large exchange capacity and flexible exchange are realized, and the spaceborne multichannel digital flexible transponder hardware platform is especially applicable to a broadband satellite communication system.
Description
Technical field
The present invention relates to star-carrying multichannel numeral flexibility transponder hardware platform, is particularly well-suited to Large Volume Data exchange
Wideband satellite communication system, solves that conventional satellite switch technology process bandwidth very flexible, exchange capacity be little, volume weight work(
The problems such as consumption is limited.
Background technology
Conventional communications satellites typically adopt " bend pipe " formula transponder, only complete signal and amplify and frequency error factor, with signal shape
Formula is unrelated, transparent to procotol.Although the characteristics of this has simple, flexible, as the demand of broadband services grows to even greater heights,
Transmission speed of service efficiency and data of real-time, frequency to information transfer etc. is proposed higher requirement, and this just needs
Broadband satellite that will be of new generation has increasingly complex mixing flexibility forwarding capability, to realize more efficient information transfer.Have
Big bandwidth, motility and adaptable flexible retransmission technique become the focus of research and paying close attention to for Future Satellite transponder
Content.
The content of the invention
It is an object of the invention to provide a kind of star-carrying multichannel numeral flexibility transponder hardware platform.This Platform Designing exists
Hardware circuit realizes upper simple, small volume, low in energy consumption, at the same exchange capacity it is big, with roomy, strong adaptability, solve existing turn
Send out the problem of device technical deficiency.
The object of the present invention is achieved like this：
A kind of star-carrying multichannel numeral flexibility transponder hardware platform, including multiple channel units, signal exchange unit 17,
Power subsystem 18 and clock unit 16, power subsystem 18 are that each channel unit and signal exchange unit provide clock, clock list
Unit 16 provides clock for each channel unit；Each channel unit includes that the first wave filter 1, the first down coversion 2, second are filtered
Device 3, the first amplifier 4, the second down coversion 5, the 3rd wave filter 6, the first numerical control 7, signal analysis and comprehensive unit the 8, the 4th are filtered
Ripple device 9, the second numerical control 10, the first up-conversion 11, the 5th wave filter 12, the second amplifier 13, the second up-conversion the 14, the 6th are filtered
Device 15；It is characterized in that：In each channel unit, C-band signal sequentially passes through the first wave filter 1 by the simulation of outside input
Signal is exported after carrying out first time filtering to the first down coversion 2；First down coversion 2 carries out down-converted output to the to signal
Two wave filter 3；Second wave filter 3 is exported after carrying out second filtering to down-conversion signal to the first amplifier 4；First amplifier
4 by amplify signal output to the second down coversion 5；Second down coversion 5 carries out second down-converted output to signal
Three wave filter 6；3rd 6 pairs, wave filter, second down-conversion signal is exported to the first numerical control 7 after carrying out anti-aliasing filter；First number
7 pairs of signals of control are sent into signal analysis and comprehensive unit 8 after carrying out gain size adjustment and carry out signal analysis；The I that obtains after analysis,
Signal exchange unit 17 is arrived in the output of Q two paths of signals, and signal exchange unit 17 carries out channel unit according to external input control signal
Between signal exchange；Signal output after exchange carries out signal synthesis to signal analysis and comprehensive unit 8；Signal after synthesis is defeated
Go out to the 4th wave filter 9；4th wave filter 9 is to exporting the second numerical control 10 after signal filtering；Second numerical control 10 will carry out gain
Signal output after regulation is to the first up-conversion 11；First up-conversion 11 carries out output after first time upconversion process and arrives to signal
5th wave filter 12；5th 12 pairs, wave filter first time up-conversion signal exports the second amplifier 13 after being filtered；Second
Amplifier 13 is by the signal output amplified to the second up-conversion 14；Second up-conversion 14 is by the signal output after second up-conversion
To the 6th wave filter 15；6th wave filter 15 will be sent after signal filtering.
Wherein, described signal analysis and comprehensive unit 8 include A/D converter 8-1, a FPGA8-2, D/A converter
8-3, high speed connector head 8-4；First numerical control 7 is adjusted the analogue signal after gain and is converted into digital letter by A/D converter 8-1
Number, a FPGA8-2 carries out signal analysis and processing to digital signal, exports I, Q two paths of signals, and high speed connector head 8-4 will believe
I, Q two paths of signals of number analyzing and processing is transferred to crosspoint 17 and swaps, and the data after exchange pass through high speed connector again
Head 8-4 carries out signal synthesis in being transferred to a FPGA8-2, the digital signal after synthesis is converted into simulation by D/A converter 8-3
Signal output.
Wherein, described signal exchange unit 17 include multiple high speed connector seat 17-1, the 2nd FPGA17-2, the 3rd
FPGA17-3, RS422 drive 17-4；Multiple high speed connector seat 17-1 in high speed connector group respectively with multiple channel units
In signal analysis and comprehensive unit 8 connect one to one；I that high speed connector head 8-4 is transmitted by high speed connector seat 17-1,
Q two paths of signals corresponds output respectively to the 2nd FPGA17-2 and the 3rd FPGA17-3, and the 2nd FPGA17-2 is to multichannel I
Road signal carries out unifying to exchange, and the 2nd FPGA17-3 carries out unifying to exchange to multichannel Q roads signal, high speed connector seat 17-1
I, Q two paths of signals after exchange is transferred to into high speed connector head 8-4 again, RS422 drives the control of 17-4 transmission platforms output
Signal is to the 2nd FPGA17-2 and the 3rd FPGA17-3.
The present invention compares background technology and has the advantage that：
1. the present invention is capable of achieving the data exchange of multiple passage vast capacities；
2. the present invention is compared with other hardware platforms of domestic identical function, with circuit is simple, compact conformation, weight
Gently, the features such as low in energy consumption, strong adaptability；
Description of the drawings
Fig. 1 is the electric functional-block diagram of the embodiment of the present invention.
Fig. 2 is the electric functional-block diagram of signal analysis of the present invention and comprehensive unit.
Fig. 3 is the electric functional-block diagram that signal exchange of the present invention closes unit.
Specific embodiment
It is with reference to Fig. 1, a kind of that there is star-carrying multichannel numeral flexibility transponder hardware platform, including multiple channel units, friendship
Unit, power subsystem and clock unit is changed, each channel unit includes that the first wave filter 1, the first down coversion 2, second are filtered
Device 3, the first amplifier 4, the second down coversion 5, the 3rd wave filter 6, the first numerical control 7, signal analysis and comprehensive unit the 8, the 4th are filtered
Ripple device 9, the second numerical control 10, the first up-conversion 11, the 5th wave filter 12, the second amplifier 13, the second up-conversion the 14, the 6th are filtered
Device 15；Fig. 1 is a kind of embodiment electrical schematic diagram of star-carrying multichannel numeral flexibility transponder hardware platform of the invention.
A kind of effect of described the first wave filter of star-carrying multichannel numeral flexibility transponder hardware platform 1 is to filter reception
The signal outside C-band signal band for arriving and noise.Signal after wave filter sends into the first down coversion 2, by C-band signal down coversion
To the first intermediate frequency, frequency mixer is preferably with passive device.First intermediate frequency sends into the second wave filter 3, filters the high frequency letter after mixing
Number and noise.Filtered signal sends into the first amplifier 4, amplifies the power of signal.Signal after amplification sends into second time change
Frequently 5, the first intermediate frequency is down-converted to into the second intermediate frequency.Second intermediate-freuqncy signal sends into the 3rd wave filter 6, mainly signal is carried out anti-mixed
Folded filtering.Filtered signal sends into the first numerical control 7, and signal gain is adjusted.The second intermediate-freuqncy signal after adjustment is sent into
Signal analysis and comprehensive unit 8, carry out subchannel separation to signal.Signal after separation enters crosspoint 17, to multiple logical
The signal in road carries out unifying to exchange.Signal after exchange sends into signal analysis and comprehensive unit 8, and sub-channel carries out group again
Close.Signal after reconfiguring sends into the 4th wave filter 9, carries out anti-aliasing filter to signal.Filtered signal sends into second
Numerical control 10, is adjusted to signal gain.Signal after adjustment sends into the first up-conversion 11, carries out first time up-conversion to signal
Process.The signal of first time up-conversion sends into the 5th wave filter 12, filters signal and noise outside band after being mixed.Filtered letter
Number send into the second amplifier 13, amplify signal power.Signal after amplification sends into the second up-conversion 14, carries out second to signal
Secondary upconversion process.Upconvert to C-band signal and send into the 6th wave filter 15, send afterwards after filtering.
Described signal analysis and comprehensive unit 8 include A/D converter 8-1, FPGA 8-2, D/A converter 8-3,
High speed connector head 8-4, embodiment is according to Fig. 2 connection lines.First numerical control 7 is adjusted the simulation after gain by A/D converter 8-1
Signal is converted into digital signal, ADS5463 of the A/D converter using TI companies.First FPGA 8-2 carry out son to digital signal
Channel is separated, and forms I, Q two paths of signals, and I, Q two paths of signals of signal analysis and processing is transferred to exchange by high speed connector head 8-4
Unit 17 is swapped, and the data after exchange are transferred in FPGA 8-2 by high speed connector head 8-4 again and carry out sub- letter
Road is reconfigured, and realizes the analysis and synthesis of two passages in a piece of FPGA, and high speed data transfer is by the GTP realities in FPGA
It is existing.Digital signal after synthesis is converted into analog signal output by D/A converter 8-3, and D/A converter is using TI companies
DAC5682Z, with functions such as interpolation, up-conversions.
Described signal exchange unit 17 includes multiple high speed connector seat 17-1, the 2nd FPGA 17-2, the 3rd FPGA
17-3, RS422 drive 17-4；I, Q two paths of signals that high speed connector head 8-4 is transmitted by high speed connector seat 17-1 is respectively one by one
To the 2nd FPGA 17-2 and the 3rd FPGA 17-3, the 2nd FPGA 17-2 unite to the I roads signal of multiple passages for correspondence output
One exchanges, and the 3rd FPGA 17-3 carry out unifying to exchange to the Q roads signal of multiple passages, and high speed connector seat 17-1 will be exchanged again
I, Q two paths of signals afterwards is transferred to high speed connector head 8-4, and RS422 drives 17-4 according to external input control signal control the
Two FPGA17-2 and the 3rd FPGA17-3 carry out signal exchange, and data request information is externally exported, and RS422 drives to include and sends out
Driving is sent and receives, the model of employing is respectively：DS26LS31 and DS26LS32.
Each FPGA in embodiment is using the XC5VSX240T models of Xilinx genuine production.
Principle is realized in invention
Star-carrying multichannel numeral flexibility transponder hardware platform is capable of achieving analysis, exchange and the synthesis of multiple channel signals,
Device filters out-of-band noise to the C-band signal of input after filtering, is down-converted to suitable intermediate frequency through first time, is filtered by wave filter
Except high-frequency signal and noise after mixing, signal power is improved by amplifier, through be down-converted to for the second time needs it is low in
Frequently, filter through frequency overlapped-resistable filter, signal gain is adjusted by numerical control, analogue signal is turned by A/D converter
Change digital signal into, digital signal after signal analysis, signal exchange, signal synthesis, by D/A converter by digital signal
Analogue signal is changed into, then, anti-aliasing filter is carried out by wave filter, signal gain is adjusted by numerical control, passed through
Upconvert to suitable intermediate frequency for the first time, the signal and noise after wave filter filters mixing with outside is improved by amplifier and believed
Number power, upconverts to C-band through for the second time, finally by sending after filter filtering.Clock unit provides ADC and DAC
Sampling clock, power subsystem powers for whole hardware platform.
Claims (4)
1. a kind of star-carrying multichannel numeral flexibility transponder hardware platform, including multiple channel units, signal exchange unit (17),
Power subsystem (18) and clock unit (16), power subsystem (18) are that each channel unit and signal exchange unit provide clock,
Clock unit (16) provides clock for each channel unit；Each channel unit includes the first wave filter (1), the first down coversion
(2), the second wave filter (3), the first amplifier (4), the second down coversion (5), the 3rd wave filter (6), the first numerical control (7), signal
Analysis and synthesis unit (8), the 4th wave filter (9), the second numerical control (10), the first up-conversion (11), the 5th wave filter (12),
Two amplifiers (13), the second up-conversion (14) and the 6th wave filter (15)；It is characterized in that：In each channel unit, C-band
Signal is sequentially passed through after the analogue signal of outside input is carried out first time filtering by the first wave filter (1) and is exported to the first down coversion
(2)；First down coversion (2) carries out down-converted output to the second wave filter (3) to signal；Second wave filter (3) is to lower change
Frequency signal is exported after carrying out second filtering to the first amplifier (4)；First amplifier (4) is by the signal output amplified to second
Down coversion (5)；Second down coversion (5) carries out second down-converted output to the 3rd wave filter (6) to signal；3rd filtering
Device (6) is exported after carrying out anti-aliasing filter to second down-conversion signal to the first numerical control (7)；First numerical control (7) is entered to signal
Signal analysis and comprehensive unit (8) are sent into after the adjustment of row gain size carries out signal analysis；Signal analysis and comprehensive unit (8) will
To signal exchange unit (17), signal exchange unit (17) is according to outside input control for I, Q two paths of signals output obtained after analysis
Signal processed carries out the signal exchange between channel unit, and the signal output after exchange to signal analysis and comprehensive unit (8) carry out letter
Number synthesis, comprehensively after signal output to the 4th wave filter (9)；4th wave filter (9) is to exporting the second number after signal filtering
Control (10)；Second numerical control (10) will carry out the signal output after gain-adjusted to the first up-conversion (11)；First up-conversion (11)
The 5th wave filter (12) is exported after first time upconversion process is carried out to signal；5th wave filter (12) is to first time up-conversion
Signal exports the second amplifier (13) after being filtered；Second amplifier (13) is by the signal output amplified to the second up-conversion
(14)；Second up-conversion (14) is by the signal output after second up-conversion to the 6th wave filter (15)；6th wave filter (15)
To send after signal filtering.
2. a kind of star-carrying multichannel numeral flexibility transponder hardware platform according to claim 1, it is characterised in that：It is described
Signal analysis and comprehensive unit (8) include A/D converter (8-1), a FPGA (8-2), D/A converter (8-3) and at a high speed
Connector head (8-4)；First numerical control (7) is converted into digital letter to the signal for exporting by analogue signal by A/D converter (8-1)
Number, a FPGA (8-2) carries out signal analysis and processing to digital signal, exports I, Q two paths of signals, high speed connector head (8-4)
I, Q two paths of signals of signal analysis and processing is transferred to crosspoint (17) to swap, the data after exchange are again by a high speed
Connector head (8-4) carries out signal synthesis in being transferred to a FPGA (8-2), the numeral after synthesis is believed by D/A converter (8-3)
Number analog signal output is converted into the 4th wave filter (9).
3. a kind of star-carrying multichannel numeral flexibility transponder hardware platform according to claim 1 and 2, it is characterised in that：
High speed connector seat group that described signal exchange unit (17) is constituted including multiple high speed connector seat (17-1), the 2nd FPGA
(17-2), the 3rd FPGA (17-3) and RS422 drives (17-4)；
Multiple high speed connector seat (17-1) in high speed connector group respectively with multiple channel units in signal analysis and comprehensive
Close unit (8) to connect one to one, I, Q two paths of signals obtained after analysis is passed through at a high speed by signal analysis and comprehensive unit (8)
Connector holder corresponds output respectively to the 2nd FPGA (17-2) and the 3rd FPGA (17-3)；2nd FPGA (17-2) to leading to more
The I roads signal in road carries out unifying to exchange, and the 3rd FPGA (17-3) carries out unifying to exchange to multichannel Q roads signal；Connect at a high speed
I, Q two paths of signals after the 2nd FPGA (17-2) and the 3rd FPGA (17-3) is exchanged is transferred to signal by device seat (17-1) again
Analysis and synthesis unit (8)；RS422 drives (17-4) to control the 2nd FPGA (17-2) and the 3rd according to external input control signal
FPGA (17-3) carries out signal exchange, and data request information is externally exported.
4. a kind of star-carrying multichannel numeral flexibility transponder hardware platform according to claim 3, it is characterised in that：It is multiple
High speed connector head (8-4) and multiple high speed connector seats (17-1) are connected one to one respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611080253.XA CN106533540B (en) | 2016-11-30 | 2016-11-30 | A kind of flexible transponder hardware platform of star-carrying multichannel number |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611080253.XA CN106533540B (en) | 2016-11-30 | 2016-11-30 | A kind of flexible transponder hardware platform of star-carrying multichannel number |
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| CN106533540A true CN106533540A (en) | 2017-03-22 |
| CN106533540B CN106533540B (en) | 2019-03-15 |
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| CN201611080253.XA Active CN106533540B (en) | 2016-11-30 | 2016-11-30 | A kind of flexible transponder hardware platform of star-carrying multichannel number |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880716A (en) * | 2018-07-05 | 2018-11-23 | 中国电子科技集团公司第五十四研究所 | A kind of Satellite Channel Simulator design method based on digital channelizing technology |
| CN108964697A (en) * | 2018-07-19 | 2018-12-07 | 航天恒星科技有限公司 | A kind of digital channelizing transponder system and retransmission method realized based on FPGA |
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| CN101188590A (en) * | 2007-08-21 | 2008-05-28 | 京信通信系统（中国）有限公司 | Digital downlink frequency conversion system and digital downlink frequency conversion method in multi-carrier signal processing |
| CN103684633A (en) * | 2013-11-30 | 2014-03-26 | 成都天奥信息科技有限公司 | Monitoring simulator for transponding satellite signals |
| CN203722632U (en) * | 2013-11-11 | 2014-07-16 | 四川安迪科技实业有限公司 | Satellite communication terminal having multiple receiving channels |
| CN105827305A (en) * | 2016-04-15 | 2016-08-03 | 中国电子科技集团公司第五十四研究所 | Reconfigurable flexible forwarding implementation method combining transparency and processing |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101188590A (en) * | 2007-08-21 | 2008-05-28 | 京信通信系统（中国）有限公司 | Digital downlink frequency conversion system and digital downlink frequency conversion method in multi-carrier signal processing |
| CN203722632U (en) * | 2013-11-11 | 2014-07-16 | 四川安迪科技实业有限公司 | Satellite communication terminal having multiple receiving channels |
| CN103684633A (en) * | 2013-11-30 | 2014-03-26 | 成都天奥信息科技有限公司 | Monitoring simulator for transponding satellite signals |
| CN105827305A (en) * | 2016-04-15 | 2016-08-03 | 中国电子科技集团公司第五十四研究所 | Reconfigurable flexible forwarding implementation method combining transparency and processing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108880716A (en) * | 2018-07-05 | 2018-11-23 | 中国电子科技集团公司第五十四研究所 | A kind of Satellite Channel Simulator design method based on digital channelizing technology |
| CN108964697A (en) * | 2018-07-19 | 2018-12-07 | 航天恒星科技有限公司 | A kind of digital channelizing transponder system and retransmission method realized based on FPGA |
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| CN106533540B (en) | 2019-03-15 |
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