CN106533540B - A kind of flexible transponder hardware platform of star-carrying multichannel number - Google Patents
A kind of flexible transponder hardware platform of star-carrying multichannel number Download PDFInfo
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- CN106533540B CN106533540B CN201611080253.XA CN201611080253A CN106533540B CN 106533540 B CN106533540 B CN 106533540B CN 201611080253 A CN201611080253 A CN 201611080253A CN 106533540 B CN106533540 B CN 106533540B
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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
Abstract
The invention discloses a kind of flexible transponder hardware platforms of star-carrying multichannel number, including multiple channel units, crosspoint, power supply unit and clock unit.The invention is related to the flexible transponder Hardware platform design technology of the spaceborne number of multichannel of high-adaptability, the signal in multiple channels is subjected to down coversion, filtering, numerical control twice first, then pass through A/D converter, carry out the separation of subchannel, the whole exchange of multiple channel subchannels, the synthesis of subchannel, D/A converter, finally using numerical control, twice up-conversion, filtering submitting, and it is equipped with power supply unit and clock unit.The present invention has the characteristics that design is simple, compact-sized, exchange capacity is big, exchange is flexible, especially suitable in wideband satellite communication system.
Description
Technical field
The present invention relates to the flexible transponder hardware platforms of star-carrying multichannel number, especially suitable for Large Volume Data exchange
Wideband satellite communication system, solves that conventional satellite switch technology processing bandwidth flexibility is poor, exchange capacity is small, volume weight function
The problems such as consumption is limited.
Background technique
Conventional communications satellites generally use " bend pipe " formula transponder, signal amplification and frequency error factor are only completed, with signal shape
Formula is unrelated, transparent to network protocol.Although this have the characteristics that it is simple, flexible, as the demand of broadband services grows to even greater heights,
Real-time, the service efficiency of frequency and the transmission speed of data etc. of information transmission made higher requirement, this is just needed
Wanting the broadband satellite of a new generation has increasingly complex mixing flexibility forwarding capability, to realize more efficient information transmission.Have
Big bandwidth, flexibility and adaptable flexible retransmission technique have become a hot topic of research to be paid close attention to Future Satellite transponder
Content.
Summary of the invention
The purpose of the present invention is to provide a kind of flexible transponder hardware platforms of star-carrying multichannel number.This Platform Designing exists
Hardware circuit realize it is upper simple, small in size, low in energy consumption, while exchange capacity it is big, with roomy, adaptable, solve existing turn
The problem of sending out device technical deficiency.
The object of the present invention is achieved like this:
A kind of flexible transponder hardware platform of star-carrying multichannel number, including multiple channel units, signal exchange unit 17,
Power supply unit 18 and clock unit 16, power supply unit 18 provide clock, clock list for each channel unit and signal exchange unit
Member 16 provides clock for each channel unit；Each channel unit includes first filter 1, the filtering of the first down coversion 2, second
Device 3, the first amplifier 4, the second down coversion 5, third filter 6, the first numerical control 7, signal analysis and synthesis unit the 8, the 4th are filtered
Wave device 9, the second numerical control 10, the first up-conversion 11, the 5th filter 12, the second amplifier 13, the filtering of the second up-conversion the 14, the 6th
Device 15；It is characterized by: C-band signal successively passes through first filter 1 for externally input simulation in each channel unit
Signal exports after carrying out first time filtering to the first down coversion 2；First down coversion 2 carries out down-converted to signal and is output to the
Two filters 3；Second filter 3 carries out second exporting after filtering to the first amplifier 4 to down-conversion signal；First amplifier
The signal of amplification is output to the second down coversion 5 by 4；Second down coversion 5 carries out second of down-converted to signal and is output to the
Three filters 6；Third filter 6 exports after carrying out anti-aliasing filter to second of down-conversion signal to the first numerical control 7；First number
It controls after 7 pairs of signals carry out the adjustment of gain size and is sent into the progress signal analysis of signal analysis and synthesis unit 8；The I that is obtained after analysis,
Q two paths of signals is output to signal exchange unit 17, and signal exchange unit 17 carries out channel unit according to external input control signal
Between signal exchange；Signal after exchange is output to signal analysis and synthesis unit 8 and carries out signal synthesis；Signal after synthesis is defeated
Out to the 4th filter 9；4th filter 9 is output to the second numerical control 10 after filtering to signal；Second numerical control 10 will carry out gain
Signal after adjusting is output to the first up-conversion 11；First up-conversion 11 is output to after carrying out first time upconversion process to signal
5th filter 12；5th 12 pairs of filter first time up-conversion signal is output to the second amplifier 13 after being filtered；Second
The signal of amplification is output to the second up-conversion 14 by amplifier 13；Second up-conversion 14 exports the signal after second of up-conversion
To the 6th filter 15；6th filter 15 is sent out after filtering signal.
Wherein, the signal analysis and synthesis unit 8 includes A/D converter 8-1, the first FPGA8-2, D/A converter
8-3, high speed connector head 8-4；The analog signal that first numerical control 7 is adjusted after gain is converted into digital letter by A/D converter 8-1
Number, the first 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 analysis processing are transferred to crosspoint 17 and swap, and the data after exchange pass through high speed connector again
Head 8-4, which is transferred in the first FPGA8-2, carries out signal synthesis, and the digital signal after synthesis is converted into simulating by D/A converter 8-3
Signal output.
Wherein, the signal exchange unit 17 includes multiple high speed connector seat 17-1, the 2nd FPGA17-2, third
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 synthesis unit 8 connect one to one；I that high speed connector seat 17-1 transmits high speed connector head 8-4,
Q two paths of signals corresponds output to the 2nd FPGA17-2 and the 3rd FPGA17-3, I of the 2nd FPGA17-2 to multichannel respectively
Road signal carries out unified exchange, and the 2nd FPGA17-3 carries out unified exchange, high speed connector seat 17-1 to the road the Q signal of multichannel
I, Q two paths of signals after exchange are transferred to high speed connector head 8-4 again, RS422 drives the control of 17-4 transmission platform output
Signal is to the 2nd FPGA17-2 and the 3rd FPGA17-3.
The present invention has the following advantages over the background art:
1. the data exchange of multiple channel vast capacities can be achieved in the present invention；
2. the present invention is compared with other hardware platforms of domestic identical function, simple, the compact-sized, weight with circuit
Gently, the features such as low in energy consumption, adaptable；
Detailed description of the invention
Fig. 1 is the electrical schematic block diagram of the embodiment of the present invention.
Fig. 2 is the electrical schematic block diagram of signal analysis and synthesis unit of the present invention.
Fig. 3 is the electrical schematic block diagram that signal exchange of the present invention closes unit.
Specific embodiment
Referring to Fig.1, a kind of that there is the flexible transponder hardware platform of star-carrying multichannel number, including multiple channel units, friendship
Unit, power supply unit and clock unit are changed, each channel unit includes first filter 1, the filtering of the first down coversion 2, second
Device 3, the first amplifier 4, the second down coversion 5, third filter 6, the first numerical control 7, signal analysis and synthesis unit the 8, the 4th are filtered
Wave device 9, the second numerical control 10, the first up-conversion 11, the 5th filter 12, the second amplifier 13, the filtering of the second up-conversion the 14, the 6th
Device 15；Fig. 1 is a kind of embodiment electrical schematic diagram of the flexible transponder hardware platform of star-carrying multichannel number of the present invention.
A kind of effect of the flexible transponder hardware platform first filter 1 of star-carrying multichannel number is to filter out reception
The signal and noise outside C-band signal band arrived.Signal after filter is sent 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 is sent into second filter 3, the high frequency letter after filtering out mixing
Number and noise.Filtered signal is sent into the first amplifier 4, the power of amplified signal.Amplified signal is sent into the second lower change
Frequently 5, the first intermediate frequency is down-converted to the second intermediate frequency.Second intermediate-freuqncy signal is sent into third filter 6, mainly carries out to signal anti-mixed
Folded filtering.Filtered signal is sent into the first numerical control 7, is adjusted to signal gain.Second intermediate-freuqncy signal adjusted is sent into
Signal analysis and synthesis unit 8 carries out subchannel separation to signal.Signal after separation enters crosspoint 17, to multiple logical
The signal in road carries out unified exchange.Signal after exchange is sent into signal analysis and synthesis unit 8, and sub-channel carries out group again
It closes.Signal after reconfiguring is sent into the 4th filter 9, carries out anti-aliasing filter to signal.Filtered signal is sent into second
Numerical control 10, is adjusted signal gain.Signal adjusted is sent into the first up-conversion 11, carries out first time up-conversion to signal
Processing.The signal of first time up-conversion is sent into the 5th filter 12, filters out signal and noise after being mixed outside band.Filtered letter
Number be sent into the second amplifier 13, the power of amplified signal.Amplified signal is sent into the second up-conversion 14, carries out second to signal
Secondary upconversion process.It upconverts to C-band signal and is sent into the 6th filter 15, sent out after filtering.
The signal analysis and synthesis unit 8 include A/D converter 8-1, the first FPGA 8-2, D/A converter 8-3,
High speed connector head 8-4, embodiment is according to Fig. 2 connection line.First numerical control 7 is adjusted the simulation after gain by A/D converter 8-1
Signal is converted into digital signal, and A/D converter uses the ADS5463 of TI company.First FPGA 8-2 carries out son to digital signal
Channel separation, forms I, Q two paths of signals, and I, Q two paths of signals of signal analysis and processing are transferred to exchange by high speed connector head 8-4
Unit 17 swaps, and the data after exchange, which pass through high speed connector head 8-4 again and are transferred in the first FPGA 8-2, carries out sub- letter
Road reconfigures, and the analysis and synthesis in two channels is realized in a piece of FPGA, and high speed data transfer is real by the GTP 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 company
DAC5682Z has the function of interpolation, up-conversion etc..
The 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 difference that high speed connector seat 17-1 transmits high speed connector head 8-4 are one by one
Corresponding output unites to the road the I signal in multiple channels to the 2nd FPGA 17-2 and the 3rd FPGA 17-3, the 2nd FPGA 17-2
One exchange, the 3rd FPGA 17-3 carry out unified exchange to the road the Q signal in multiple channels, and high speed connector seat 17-1 again will exchange
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 driving includes hair
Driving is sent and receives, the model of use is respectively as follows: DS26LS31 and DS26LS32.
Each FPGA in embodiment is all made of the XC5VSX240T model of Xilinx genuine production.
Invention realization principle
The flexible transponder hardware platform of star-carrying multichannel number can realize the analysis, exchange and synthesis of multiple channel signals,
The C-band signal of input filters out out-of-band noise through wave filter, by being down-converted to suitable intermediate frequency for the first time, is filtered by filter
Except the high-frequency signal and noise after mixing, signal power is improved by amplifier, by be down-converted to for the second time needs it is low in
Frequently, it filters by frequency overlapped-resistable filter, signal gain is adjusted by numerical control, turned analog signal by A/D converter
Change digital signal into, digital signal is after signal analysis, signal exchange, signal synthesis, by D/A converter by digital signal
It is converted to analog signal, then, anti-aliasing filter is carried out by filter, signal gain is adjusted by numerical control, is passed through
Suitable intermediate frequency is upconverted to for the first time, signal and noise after being mixed outside band are filtered out by filter, passes through amplifier and improves letter
Number power, by upconverting to C-band for the second time, finally by being sent out after filter filtering.Clock unit provides ADC and DAC
Sampling clock, power supply unit be entire hardware platform power supply.
Claims (4)
1. a kind of flexible transponder hardware platform of star-carrying multichannel number, including multiple channel units, signal exchange unit (17),
Power supply unit (18) and clock unit (16), power supply unit (18) provide power supply for each channel unit and signal exchange unit,
Clock unit (16) provides clock for each channel unit；Each channel unit includes first filter (1), the first down coversion
(2), second filter (3), the first amplifier (4), the second down coversion (5), third filter (6), the first numerical control (7), signal
Analysis and synthesis unit (8), the 4th filter (9), the second numerical control (10), the first up-conversion (11), the 5th filter (12),
Two amplifiers (13), the second up-conversion (14) and the 6th filter (15)；It is characterized by: in each channel unit, C-band
Signal successively exports after externally input analog signal is carried out first time filtering by first filter (1) to the first down coversion
(2)；First down coversion (2) carries out down-converted to signal and is output to second filter (3)；Second filter (3) is to lower change
Frequency signal carries out second exporting after filtering to the first amplifier (4)；The signal of amplification is output to second by the first amplifier (4)
Down coversion (5)；Second down coversion (5) carries out second of down-converted to signal and is output to third filter (6)；Third filtering
Device (6) exports after carrying out anti-aliasing filter to second of down-conversion signal to the first numerical control (7)；First numerical control (7) to signal into
Signal analysis and synthesis unit (8), which are sent into, after the adjustment of row gain size carries out signal analysis；Signal analysis and synthesis unit (8) will
I, Q two paths of signals obtained after analysis is output to signal exchange unit (17), and signal exchange unit (17) is according to external input control
Signal processed carries out the signal exchange between channel unit, and the signal after exchange is output to signal analysis and synthesis unit (8) and carries out letter
Number synthesis, it is comprehensive after signal export to the 4th filter (9)；4th filter (9) is output to the second number after filtering to signal
It controls (10)；Signal after carrying out gain adjustment is output to the first up-conversion (11) by the second numerical control (10)；First up-conversion (11)
The 5th filter (12) is output to after carrying out first time upconversion process to signal；5th filter (12) is to first time up-conversion
Signal is output to the second amplifier (13) after being filtered；The signal of amplification is output to the second up-conversion by the second amplifier (13)
(14)；Signal after second of up-conversion is output to the 6th filter (15) by the second up-conversion (14)；6th filter (15)
It is sent out after signal is filtered.
2. a kind of flexible transponder hardware platform of star-carrying multichannel number according to claim 1, it is characterised in that: described
Signal analysis and synthesis unit (8) include A/D converter (8-1), the first FPGA (8-2), D/A converter (8-3) and high speed
Connector head (8-4)；Signal of first numerical control (7) to output is converted into digital letter by analog signal by A/D converter (8-1)
Number, the first 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 are transferred to crosspoint (17) to swap, the data after exchange pass through high speed again
Connector head (8-4), which is transferred in the first FPGA (8-2), carries out signal synthesis, and D/A converter (8-3) believes the number after synthesis
Number analog signal output is converted into the 4th filter (9).
3. a kind of flexible transponder hardware platform of star-carrying multichannel number according to claim 1 or 2, it is characterised in that:
The signal exchange unit (17) includes the high speed connector seat group of multiple high speed connector seat (17-1) compositions, the 2nd FPGA
(17-2), the 3rd FPGA (17-3) and RS422 driving (17-4)；
Multiple high speed connector seats (17-1) in high speed connector group respectively with signal analysis in multiple channel units and comprehensive
It closes unit (8) to connect one to one, I, Q two paths of signals obtained after analysis is passed through high speed by signal analysis and synthesis unit (8)
Connector holder corresponds output to the 2nd FPGA (17-2) and the 3rd FPGA (17-3) respectively；2nd FPGA (17-2) is to multi-pass
The road the I signal in road carries out unified exchange, and the 3rd FPGA (17-3) carries out unified exchange to the road the Q signal of multichannel；High speed connects
Device seat (17-1) will be transferred to signal by I, Q two paths of signals after the 2nd FPGA (17-2) and the 3rd FPGA (17-3) exchange again
Analysis and synthesis unit (8)；RS422 drives (17-4) to control the 2nd FPGA (17-2) and third according to external input control signal
FPGA (17-3) carries out signal exchange, and data request information is externally exported.
4. a kind of flexible transponder hardware platform of star-carrying multichannel number according to claim 3, it is characterised in that: multiple
High speed connector head (8-4) and multiple high speed connector seats (17-1) connect one to one respectively.
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| 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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| 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 CN106533540A (en) | 2017-03-22 |
| CN106533540B true CN106533540B (en) | 2019-03-15 |
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Families Citing this family (2)
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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 |
| CN108964697B (en) * | 2018-07-19 | 2020-07-14 | 航天恒星科技有限公司 | Digital channelized repeater system and method based on FPGA |
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 |
| 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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2016
- 2016-11-30 CN CN201611080253.XA patent/CN106533540B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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