CN109274415B - Satellite-borne transponder channel flexible synthesis switching system - Google Patents
Satellite-borne transponder channel flexible synthesis switching system Download PDFInfo
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- CN109274415B CN109274415B CN201811007743.6A CN201811007743A CN109274415B CN 109274415 B CN109274415 B CN 109274415B CN 201811007743 A CN201811007743 A CN 201811007743A CN 109274415 B CN109274415 B CN 109274415B
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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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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Abstract
The invention discloses a flexible synthesis switching system for channels of a satellite-borne transponder, which comprises a feed source input module, a switch component module and a bandwidth realization module, wherein the feed source input module receives uplink signals of external users, selects a corresponding number of signals of the uplink signals of the users aiming at different numbers of users through switching of the switch component module, realizes bandwidth selection of the signals through the bandwidth realization module by the number of signals, and amplifies and synthesizes and outputs the signals through the external power amplification module by the signals after the bandwidth selection. The invention has the advantages that the channel bandwidth can be selected, so that different uplink signals flexibly use channel frequency resources, and the frequency reuse rate is improved.
Description
Technical Field
The invention belongs to the technical field of communication satellite effective loads, and particularly relates to a flexible synthesis switching system for a satellite-borne transponder channel.
Background
In satellite payload design, the channel bandwidth of the transponder is generally designed to be a fixed width, the channel bandwidth of the traditional transponder is generally 36MHz, 54MHz, 72MHz and the like, and the channel bandwidth of the transponder used by a user is relatively fixed. If the user has less service at a certain time, less channel resources of the repeater are needed to be used, and if the channel bandwidth is relatively fixed, frequency resources are wasted; on the other hand, if there are more services, more frequency resources need to be occupied, and if the channel bandwidth is relatively fixed, the related needs cannot be met. The function of selecting the channel bandwidth of the repeater is not reported in the related art.
Disclosure of Invention
The invention solves the problems that: in order to overcome the defects of the prior art, the invention provides a flexible channel synthesis switching system of a satellite-borne transponder, which has selectable channel bandwidth, enables different uplink signals to flexibly use channel frequency resources and improves the frequency reuse rate.
The technical solution of the invention is as follows:
a flexible synthesis switching system for channels of a satellite-borne transponder comprises a feed source input module, a switch component module and a bandwidth realization module,
the feed source input module receives uplink signals of external users, selects corresponding quantity signals of the uplink signals of the users aiming at different quantities of users through switching of the switch component module, realizes bandwidth selection of the signals through the bandwidth realization module according to the quantity signals, and amplifies, synthesizes and outputs the signals after the bandwidth selection through the external power amplification module.
For one user, any one of the uplink signals of the three users is selected, the bandwidth selection of the signal is realized through any one bandwidth realization module, and the signal after the bandwidth selection is amplified and synthesized to be output through an external power amplification module.
For two users, selecting any two signals of uplink signals of the three users, excluding a bandwidth implementation module with the widest bandwidth, synthesizing and selecting the two signals through the other two bandwidth implementation modules, and amplifying, synthesizing and outputting the signals after synthesizing and selecting through an external power amplification module;
for three users, selecting uplink signals of the three users, wherein one mode is that one signal passes through a bandwidth implementation module with the widest bandwidth; the second mode is to realize the synthesis selection of signals by the other two signals through the other two bandwidth realization modules; and selecting one of the two modes to work, and amplifying, synthesizing and outputting the signal after the selection of the working through an external power amplification module.
The bandwidth of the widest bandwidth realizing module is not less than the sum of the bandwidths of the other two bandwidth realizing modules.
The bandwidth implementation module between the intermediate bandwidths comprises two sub-modules of the bandwidth implementation module with the smallest bandwidth.
For three users, selecting three user uplink signals, excluding a bandwidth realization module with the widest bandwidth, simultaneously using another two bandwidth realization modules to realize the synthesis selection of the three signals, and amplifying, synthesizing and outputting the signals after the synthesis selection through an external power amplification module.
The invention has the beneficial effects that:
the invention receives the uplink signals of external users through the feed source input module, and selects the corresponding number of the uplink signals of the users aiming at different numbers of users through switching the switch component module, so that the different uplink signals flexibly use channel frequency resources, the use flexibility of a load system is improved to a great extent, and the frequency reuse rate is improved.
Drawings
FIG. 1 is a schematic diagram of the structural system of the present invention;
fig. 2 is a block diagram of the composite switching function of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a flexible synthesis switching system for satellite-borne transponder channels comprises a feed source input module, a switch component module and a bandwidth implementation module,
the feed source input module receives uplink signals of external users, selects corresponding quantity signals of the uplink signals of the users aiming at different quantities of users through switching of the switch component module, realizes bandwidth selection of the signals through the bandwidth realization module according to the quantity signals, and amplifies, synthesizes and outputs the signals after the bandwidth selection through the external power amplification module.
For one user, any one of the uplink signals of the three users is selected, the bandwidth selection of the signal is realized through any one bandwidth realization module, and the signal after the bandwidth selection is amplified and synthesized to be output through an external power amplification module.
For two users, selecting any two signals of uplink signals of the three users, excluding a bandwidth implementation module with the widest bandwidth, synthesizing and selecting the two signals through the other two bandwidth implementation modules, and amplifying, synthesizing and outputting the signals after synthesizing and selecting through an external power amplification module;
for three users, selecting uplink signals of the three users, wherein one mode is that one signal passes through a bandwidth implementation module with the widest bandwidth; the second mode is to realize the synthesis selection of signals by the other two signals through the other two bandwidth realization modules; and selecting one of the two modes to work, and amplifying, synthesizing and outputting the signal after the selection of the working through an external power amplification module.
The bandwidth of the widest bandwidth implementation module is not less than the sum of the bandwidths of the other two bandwidth implementation modules, and the bandwidth implementation module between the two bandwidth implementation modules can be designed to be a sub-module comprising the two bandwidth implementation modules with the smallest bandwidths. Then, at this time, for three users, selecting three user uplink signals, excluding the bandwidth implementation module with the widest bandwidth, simultaneously using the other two bandwidth implementation modules to implement synthesis selection of the three signals, and passing the signals after synthesis selection through the external power amplification module, amplifying and synthesizing the signals for output.
Examples
In model design, three bandwidths are designed to be 54MHz, 34MHz and 17MHz respectively. The double-feed subband switching is designed, except for a 54MHz filter, two filters with the bandwidths of 34MHz and 17MHz are still required to be designed, and the whole 54MHz bandwidth is shared. The filter frequency division is shown in table 1 below.
TABLE 1 synthetic switching function frequency partitioning
The specific combination of composite switching functions that these three inputs need to implement is shown in table 2 below.
TABLE 2 synthetic switching function combinations
A functional block diagram of the dual feed synthesis switching function is shown in fig. 2.
For example, the following steps are carried out:
when the feed source A is 17MHz and the feed source B is 34MHz, the feed source A can be switched with the feed source C of 54 MHz;
when the feed source B is 17MHz and the feed source A is 34MHz, the feed source B can be switched with the feed source C of 54 MHz;
when the feed source A is 17MHz and the feed source C is 34MHz, the feed source A can be switched with the feed source B of 54 MHz;
when the feed source C is 17MHz and the feed source A is 34MHz, the feed source C can be switched with the feed source B of 54 MHz;
when the feed source B is 17MHz and the feed source C is 34MHz, the feed source B can be switched with the feed source A of 54 MHz;
when the feed source C is 17MHz and the feed source B is 34MHz, the feed source C can be switched with the feed source A of 54 MHz.
The invention receives the uplink signals of external users through the feed source input module, and selects the corresponding number of the uplink signals of the users aiming at different numbers of users through switching the switch component module, so that the different uplink signals flexibly use channel frequency resources, the use flexibility of a load system is improved to a great extent, and the frequency reuse rate is improved.
The present invention has not been described in detail as is known to those skilled in the art.
Claims (3)
1. A satellite-borne transponder channel flexible synthesis switching system is characterized in that: comprises a feed source input module, a switch component module and a bandwidth realizing module,
the feed source input module receives uplink signals of external users, selects a corresponding number of signals of the uplink signals of the users aiming at different numbers of users through switching of the switch component module, realizes bandwidth selection of the signals through the bandwidth realization module by the number of signals, and amplifies and synthesizes and outputs the signals after the bandwidth selection through the external power amplification module;
for one user, selecting any one of the uplink signals of the three users, selecting the bandwidth of the signal through any one bandwidth realization module, and amplifying and synthesizing the signal after the bandwidth selection through an external power amplification module to output;
for two users, selecting any two signals of uplink signals of the three users, excluding a bandwidth realization module with the widest bandwidth, synthesizing and selecting the two signals through the other two bandwidth realization modules, and amplifying, synthesizing and outputting the signals after synthesizing and selecting through an external power amplification module.
2. The on-board repeater channel flexible synthesis switching system according to claim 1, wherein: the bandwidth of the widest bandwidth realizing module is not less than the sum of the bandwidths of the other two bandwidth realizing modules.
3. The on-board repeater channel flexible synthesis switching system according to claim 2, wherein: the bandwidth implementation module between the intermediate bandwidths comprises two sub-modules of the bandwidth implementation module with the smallest bandwidth.
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| CN108107454A (en) * | 2016-11-24 | 2018-06-01 | 北京自动化控制设备研究所 | A kind of Inertia information secondary satellite deep combination loop |
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| SE502811C2 (en) * | 1994-05-11 | 1996-01-22 | Allgon Ab | Repeater |
| US7123600B2 (en) * | 1995-06-30 | 2006-10-17 | Interdigital Technology Corporation | Initial power control for spread-spectrum communications |
| CN101394263B (en) * | 2008-10-29 | 2012-02-29 | 中兴通讯股份有限公司 | Uplink channel measurement reference signal and mapping method for bandwidth range frequency domain position |
| US9030953B2 (en) * | 2011-03-04 | 2015-05-12 | Alcatel Lucent | System and method providing resilient data transmission via spectral fragments |
| CN102364348A (en) * | 2011-11-18 | 2012-02-29 | 西安欣业科技发展有限公司 | Frequency spectrum automatic monitoring analyzer for satellite ground station intermediate-frequency signal |
| CN103889011A (en) * | 2014-04-09 | 2014-06-25 | 上海斐讯数据通信技术有限公司 | Wireless bandwidth selecting method and system based on WLAN wireless bandwidth assessment |
| CN105119028B (en) * | 2015-07-14 | 2019-01-25 | 西安空间无线电技术研究所 | A kind of changeable interlinkage transponder of the satellite bandwidth that microwave switching matrix is realized |
| CN105223590B (en) * | 2015-10-27 | 2017-11-17 | 国信军创(岳阳)六九零六科技有限公司 | A kind of mixed satellite navigation anti-interference method and device |
| EP3236600A1 (en) * | 2016-04-18 | 2017-10-25 | Advanced Digital Broadcast S.A. | A low-noise block downconverter and method for the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017127747A1 (en) * | 2016-01-22 | 2017-07-27 | Space Systems / Loral, Llc | Satellite diversity |
| CN108107454A (en) * | 2016-11-24 | 2018-06-01 | 北京自动化控制设备研究所 | A kind of Inertia information secondary satellite deep combination loop |
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