CN108880716A - A kind of Satellite Channel Simulator design method based on digital channelizing technology - Google Patents
A kind of Satellite Channel Simulator design method based on digital channelizing technology Download PDFInfo
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- CN108880716A CN108880716A CN201810731651.6A CN201810731651A CN108880716A CN 108880716 A CN108880716 A CN 108880716A CN 201810731651 A CN201810731651 A CN 201810731651A CN 108880716 A CN108880716 A CN 108880716A
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- filter group
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- transponder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
Abstract
The invention discloses a kind of Satellite Channel Simulator design methods based on digital channelizing technology, relate generally to Satellite Channel Simulator design.It is by combining channel simulation algorithm with digital channelizing technology, it can be outside the function of supporting existing Satellite Channel Simulator to have, subband interchange mode is supported to fit wave beam and exchange/interlink analog functuion, extendible existing Satellite Channel Simulator function, meet system group network verifying demand, satellite communication system performance test and assessment are completed in laboratory conditions, it effectively improves evaluation and test efficiency and cost is greatly reduced, especially suitable for simulating the occasion of certain satellite multi-beam payload flexible networking applications.
Description
Technical field
The present invention relates to a kind of Satellite Channel Simulator design methods based on digital channelizing technology, are suitable for communication system
The fields such as unified test examination, remote-control romote-sensing and channel simulation.
Background technique
Have benefited from the development of multi-beam antenna technology, multi-beam satellite system is with its high antenna gain and supports wave beam
Between channeling the advantages that more and more paid attention to and applied.Other than having the characteristics that multi-beam, Future Satellite is effective
Subband function of exchange will be also introduced in load, be supported as unit of the transparent channel of smallest particles degree, any multiplexer channel combination
Exchange has higher flexibility.For analog satellite multi-beam payload flexible networking application, in Satellite Channel Simulator
In need Multipexer signal subspace tape swap function to exchange/interlink function with wave beam, however in existing equipment only part can
Support wave beam interlinkage function, and without any a with subband function of exchange.
Summary of the invention
The problem to be solved by the present invention is that the current Satellite Channel Simulator for solving to mention in above-mentioned background technique is deposited
Shortcoming, and provide a kind of Satellite Channel Simulator design method based on digital channelizing technology.The present invention in addition to
Outside the function of supporting existing Satellite Channel Simulator to have, wave is fitted herein in connection with digital channelizing technical support subband interchange mode
Beam exchanges/interlinks analog functuion, and extendible existing Satellite Channel Simulator function completes satellite communication system in laboratory conditions
System performance test and assessment effectively improve evaluation and test efficiency and cost are greatly reduced.
The object of the present invention is achieved like this, a kind of Satellite Channel Simulator design side based on digital channelizing technology
Method, it includes step：
1. the data of N number of port are respectively fed to the analysis filtering of the variable Digital Microwave flexibility transponder of N number of bandwidth granularity
Analysis filtering is carried out in device group, wherein N is natural number；
2. analog configuration parameter being exchanged/interlinking according to subband exchange and wave beam, by the output signal of N number of analysis filter group
It swaps；
3. the output signal of each analysis filter group by exchange is respectively fed to variable micro- of corresponding bandwidth granularity
It is reconstructed in the synthesis filter group of wave number word flexibility transponder；
4. each port reconstruction signal is sent into channel simulation unit, satellite communication link is completed using channel simulation algorithm and is passed
Defeated simulated behavior.
Wherein, the step 1. in, the variable Digital Microwave flexibility transponder of N number of bandwidth granularity possesses identical quantity
The subchannel of subchannel or different number.
A kind of Satellite Channel Simulator design method based on digital channelizing technology, includes the following steps：
1. the data of N number of port are respectively fed to channel simulation unit, satellite communication link is completed using channel simulation algorithm
Data after simulation, are respectively fed to the analysis of the variable Digital Microwave flexibility transponder of N number of bandwidth granularity by transmission characteristic simulation
Filter group；Wherein N is natural number；
2. the analysis filter group of the variable Digital Microwave flexibility transponder of N number of bandwidth granularity distinguishes the data after simulation
Carry out analysis filtering；
3. analog configuration parameter being exchanged/interlinking according to subband exchange and wave beam, by the output signal of N number of analysis filter group
It swaps；
4. the output signal of each analysis filter group by exchange is respectively fed to variable micro- of corresponding bandwidth granularity
It is reconstructed in the synthesis filter group of wave number word flexibility transponder.
Wherein, the step 1. in, the variable Digital Microwave flexibility transponder of N number of bandwidth granularity possesses identical quantity
The subchannel of subchannel or different number.
The present invention has the following advantages over the background art：
For the present invention other than the function of supporting existing Satellite Channel Simulator to have, also support subband interchange mode fits wave
Beam exchanges/interlinks analog functuion, and extendible existing Satellite Channel Simulator function meets system group network verifying demand, is satellite
Communication equipment research provides channel simulation tool, especially suitable for simulating certain satellite multi-beam payload flexible networking applications
Occasion.
Detailed description of the invention
Fig. 1 is the electric functional block diagram of the embodiment of the present invention.
Fig. 2 is that subband exchange of the present invention and wave beam exchange/interlink analog configuration schematic diagram.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the electric principle of the Satellite Channel Simulator design method based on digital channelizing technology of the embodiment of the present invention
Block diagram, it includes analysis filter group, subband exchange, synthesis filter group and channel simulation unit.
Specifically include following steps：
1. the data of 4 ports are respectively fed to the analysis filtering of the variable Digital Microwave flexibility transponder of 4 bandwidth granularities
In device group；
Step 1. in, the variable Digital Microwave flexibility transponder of 4 bandwidth granularities can possess the subchannel of identical quantity,
The subchannel of different number can be possessed；
In the embodiment of the present invention, it is assumed that the variable Digital Microwave flexibility repeater package of each bandwidth granularity contains 4 sub-channels.
2. analog configuration parameter being exchanged/interlinking according to subband exchange and wave beam, by the output signal of 4 analysis filter groups
It swaps；
In the embodiment of the present invention, it is assumed that configuration wave beam 1 the 1st, the 1st of 2 subchannels and wave beam 2 the, 2 subchannels are handed over
It changes, wave beam 3 interlinks with wave beam 4, then by the 1st of analysis filter group 1 the, the output signal of 2 subchannels and analysis filter
The 1st of group 2, the output signal of 2 subchannels swaps, and completes subband and exchanges analog functuion；By all sons of analysis filter group 3
The output signal of channel and the output signal of all subchannels of analysis filter group 4 swap, and complete wave beam interlinkage simulation function
Can, as shown in Figure 2.
3. by the variable Digital Microwave of corresponding bandwidth granularity is sent by each analysis filter group output signal of exchange
It is reconstructed in the synthesis filter group of flexible transponder；
4. each port reconstruction signal is sent into channel simulation unit, satellite communication is completed using existing channel simulation algorithm
Link transmission simulated behavior.
Step 4. in, channel simulation unit can be placed in after synthesis filter group, may also placed in analysis filter group
Before.
Claims (4)
1. a kind of Satellite Channel Simulator design method based on digital channelizing technology, it is characterised in that include the following steps：
1. the data of N number of port are respectively fed to the analysis filter group of the variable Digital Microwave flexibility transponder of N number of bandwidth granularity
In carry out analysis filtering, wherein N be natural number；
2. exchanging/interlinking analog configuration parameter according to subband exchange and wave beam, the output signal of N number of analysis filter group is carried out
Exchange；
3. the output signal of each analysis filter group by exchange is respectively fed to the variable microwave number of corresponding bandwidth granularity
It is reconstructed in the synthesis filter group of word flexibility transponder；
4. each port reconstruction signal is sent into channel simulation unit, it is special to complete satellite communication link transmission using channel simulation algorithm
Property simulation.
2. a kind of Satellite Channel Simulator design method based on digital channelizing technology according to claim 1, special
Sign is：The step 1. in, the variable Digital Microwave flexibility transponder of N number of bandwidth granularity possesses the subchannel of identical quantity
Or the subchannel of different number.
3. a kind of Satellite Channel Simulator design method based on digital channelizing technology, it is characterised in that include the following steps：
1. the data of N number of port are respectively fed to channel simulation unit, satellite communication link transmission is completed using channel simulation algorithm
Simulated behavior filters the analysis that the data after simulation are respectively fed to the variable Digital Microwave flexibility transponder of N number of bandwidth granularity
Device group；Wherein N is natural number；
2. the analysis filter group of the variable Digital Microwave flexibility transponder of N number of bandwidth granularity carries out the data after simulation respectively
Analysis filtering；
3. exchanging/interlinking analog configuration parameter according to subband exchange and wave beam, the output signal of N number of analysis filter group is carried out
Exchange；
4. the output signal of each analysis filter group by exchange is respectively fed to the variable microwave number of corresponding bandwidth granularity
It is reconstructed in the synthesis filter group of word flexibility transponder.
4. a kind of Satellite Channel Simulator design method based on digital channelizing technology according to claim 3, special
Sign is：The step 1. in, the variable Digital Microwave flexibility transponder of N number of bandwidth granularity possesses the subchannel of identical quantity
Or the subchannel of different number.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113904744A (en) * | 2021-09-24 | 2022-01-07 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Ka-waveband channel simulation system with satellite communication channel simulation function |
| CN113965276A (en) * | 2021-11-22 | 2022-01-21 | 上海创远仪器技术股份有限公司 | System for realizing port mapping control of channel simulator based on data stream exchange |
| CN114124194A (en) * | 2021-11-15 | 2022-03-01 | 中国电子科技集团公司第五十四研究所 | Satellite flexible switching system and method based on digital channelized beam forming |
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| CN114124194A (en) * | 2021-11-15 | 2022-03-01 | 中国电子科技集团公司第五十四研究所 | Satellite flexible switching system and method based on digital channelized beam forming |
| CN113965276A (en) * | 2021-11-22 | 2022-01-21 | 上海创远仪器技术股份有限公司 | System for realizing port mapping control of channel simulator based on data stream exchange |
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Application publication date: 20181123 |