CN104301024A - Satellite-borne multi-load data frame transmission system - Google Patents
Satellite-borne multi-load data frame transmission system Download PDFInfo
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- CN104301024A CN104301024A CN201410466486.8A CN201410466486A CN104301024A CN 104301024 A CN104301024 A CN 104301024A CN 201410466486 A CN201410466486 A CN 201410466486A CN 104301024 A CN104301024 A CN 104301024A
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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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18582—Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
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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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/1858—Arrangements for data transmission on the physical system, i.e. for data bit transmission between network components
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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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
-
- 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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18586—Arrangements for data transporting, e.g. for an end to end data transport or check
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Abstract
The invention provides a satellite-borne multi-load data frame transmission system. The satellite-borne multi-load data frame transmission system comprises a first interface module (1), a data processing module (2), a data caching module (3) and a second interface module (4), wherein the first interface module (1) is used for transmitting multiple paths of load data with unbalanced bit rates to the data processing module (2), the data processing module (2) is used for carrying out formatting, data framing, data storage, data scrambling and data output on the received load data, the data caching module (3) is used for carrying out high-speed caching on data output by the data processing module (2), and the second interface module (4) is used for reading out the output data according to the specified rate. According to the satellite-borne multi-load data frame transmission system, high-rate load input and low-rate data downloading of a low-orbit satellite data transmission system can be achieved; under the situation that station meeting time and satellite permanent storage are limited, channels are made use of to the maximum extent, and the usage efficiency of a satellite is improved.
Description
Technical field
The present invention relates to satellite data frame transmission field, particularly, relate to spaceborne multi-load data frame transfer system.
Background technology
EO-1 hyperion observation satellite is the important component part realizing high score special project this target that " forms the space-time cooperative of high spatial resolution, high time resolution, high spectral resolution and High Accuracy Observation, the earth observation systems of round-the-clock, round-the-clock ".This Seeds of First Post-flight 6 kinds of load, mainly possess following four features: (1) load is many, and bit rate difference is large, wherein single load maximum transmission rate is 1.8Gbps, minimum is 10Mbps, and rate of loading is extremely uneven, and load peaks speed adds up to 2.3Gbps; (2) mode of operation of load is many, and between different mode, bit rate change greatly; (3) working hour of load is inconsistent; (4) operating time of load is inconsistent, pass speed under data transmission subsystem is binary channels 900Mbps (450Mbps/ passage) simultaneously, admittedly deposit in order to maximum using and count and pass passage, improve the task performance of whole star, satellite adopts a kind of novel multi-load data transmission scheme method.
Passing down duration, speed, admittedly deposit capacity, under number passes the constraint of Bandwidth-Constrained, passing passage to utilize substantially admittedly to deposit and count, needing the novel data frame transfer method for designing of employing.This kind of spaceborne multi-load data frame transfer method for designing is to after the load caching process received, load data is completed scheduling, multiple connection by the difference according to the transmission rate of load, then according to CCSDS AOS agreement, the AOS number that standard is dressed up in the encapsulating of the load data of buffer memory is passed frame, passing after frame carries out scrambling AOS number is stored in non-volatile memory medium, according to seeing station situation, AOS number is passed frame read from storage medium, through 2 DBMS buffer memorys, AOS number passed under frame is sent to two passage buffer memorys respectively according to the form of whole frame according to the principle of first-in first-out and pass.Because input load data rate is up to 2.3Gbps, lower biography speed is 900Mbps, therefore inter-process adopts the design means of width bus, many buffer memorys, and ensure to pass under binary channels at full speed according to first inputting the design philosophy first exported, the number utilized to greatest extent passes passage.This transmission method for designing obtains application at present on certain satellite.By this transmission method for designing, can ensure that satellite load data pass ground under maximized, improve the effective utilization of whole star, thus in satellite application, play larger benefit.
Along with increasing gradually of satellite model task, rate of loading is more and more higher, and frequency resource day is becoming tight, and in the design of low orbit satellite Data transfer system, how in limited seeing, the load data transmitting maximum in the time of station becomes problem demanding prompt solution.The invention provides a kind of spaceborne multi-load data frame transfer method for designing, the solution for the problems referred to above is provided a kind of approach.
Summary of the invention
For defect of the prior art, uneven in order to solve load input rate, maximum channel efficiency of transmission problem, the object of the invention is to a kind of method proposing spaceborne multi-load data frame transfer design, utilize the present invention, the input of low orbit satellite Data transfer system two-forty load can be realized, pass under low-rate data, see when station time and star having admittedly limit, utilize channel to greatest extent, improve the effective utilization of satellite.
In order to reach foregoing invention object, the present invention for the method for designing that its technical problem of solution adopts be utilize the mode of software simulating to realize, wherein processing module completes the reception buffer memory of multi-load data, scheduling, multiple connection, AOS framing, data scrambling and memory function; By internal bus, packaged AOS frame is sent to cache module again and carries out shunt transmission according to the sequencing entered, detailed implementation procedure is as follows:
According to one provided by the invention spaceborne multi-load data frame transfer system, comprise as lower device:
First interface module 1, for transmitting the load data of the unbalanced bit rate of multichannel to data processing module 2;
Data processing module 2, for carrying out formatting, data framing, data storage, data scrambling, data output processing to the load data received;
Data cache module 3, carries out high-speed cache for the data exported data processing module 2;
Second interface module 4, for reading according to the speed of regulation the data of described output.
Preferably, interface module 1, obtains load data by LVDS interface or TLK2711 interface high-speed interface, then by the mode of bus by data stream transmitting to the data processing module 2 of rear end.
Preferably, data processing module 2 comprises as lower device:
Receive buffer storage 201, for completing the data buffer storage of the different loads data flow of first interface module 1;
Scheduling multiple devices 202, the difference for the speed according to payload data stream is dispatched each load data buffer memory, multiple connection;
AOS framing device 203, for data cached for the load be filled with foundation CCSDS AOS standard packaging being become the AOS frame of standard, frame length is 1024Bytes;
Scrambling apparatus 204, for carrying out carrying out scrambling according to the pseudo random sequence of specifying to the data of AOS frame except synchronous head of standard;
Storage device 205, for carrying out data storage to the AOS frame completing scrambling.
Preferably, data cache module 3 comprises: level cache device 301, L2 cache device 302, first passage buffer storage 303 and second channel buffer storage 304;
Level cache data, for reading in as level cache data using CCSDS AOS frame data from storage device 205, are then sent to L2 cache device 302 by level cache device 301;
L2 cache device 302, for according to being input to the sequencing of L2 cache, by CCSDS AOS frame according to the form alternate transport of whole frame to first passage buffer storage 303 and second channel buffer memory 304.
Preferably, the data of the first output channel 303 and the second output channel 304 buffer memory are sent to the transmitter of rear end by described second interface module 4 by LVDS high-speed interface.
Compared with prior art, the present invention has following beneficial effect:
The invention solves load input rate imbalance and maximum channel efficiency of transmission problem, utilize the present invention, the input of low orbit satellite Data transfer system two-forty load can be realized, pass under low-rate data, see when station time and star having admittedly limit, utilize channel to greatest extent, improve the effective utilization of satellite.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is theory diagram of the present invention.
Fig. 2 is detailed design block diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
Spaceborne multi-load data frame transfer system provided by the invention, comprises first interface module 1, data processing module 2, data cache module 3, second interface module 4.
First interface module 1, obtains load data by the high-speed interface such as LVDS interface, TLK2711 interface, then by the mode of bus by data stream transmitting to the processing module of rear end.
Data processing module 2 forms primarily of reception buffer storage 201, scheduling multiple devices 202, AOS framing device 203, scrambling apparatus 204 and storage device 205, mainly completes scrambling and data storage that the reception buffer memory of multi-load data flow, scheduling, multiple connection, AOS framing and number pass frame.Wherein receive the data buffer storage that buffer storage 201 mainly completes the different loads data flow of first interface module 1; Scheduling multiple devices 202 is dispatched each load data buffer memory according to the difference of the speed of payload data stream, multiple connection; AOS framing device 203 is by data cached for the load be the filled with AOS frame becoming standard according to CCSDS AOS standard packaging, and frame length is 1024Bytes; The data of AOS frame except synchronous head of scrambling apparatus 204 pairs of standards carry out carrying out scrambling according to the pseudo random sequence of specifying; Storage device 205 carries out data storage to the AOS frame completing scrambling.
Cache module 3 is core cells of multi-load data frame transfer, form primarily of level cache device 301, L2 cache device 302, first passage buffer storage 303 and second channel buffer storage 304, complete and the CCSDS AOS frame data of storage are read into level cache device 301, then level cache data are delivered to L2 cache device 302, according to the sequencing being input to L2 cache, CCSDS AOS number is passed the form alternate transport of frame according to whole frame to first passage buffer storage 303 and second channel buffer storage 304.The wherein data that read from storage device 205 of the main buffer memory of level cache device 301, this buffer memory capacity is large, for 2Gbits, adopt the form of SDRAM, can not read while write, adopt 80MHz clock, 64bits bus parallel operates, read-write speed can reach 5.12Gbps, and write according to page the pattern read with page and operate, the capacity of every page is 1024*64bits (8 frame AOS frame); L2 cache device 302 is high-speed cache, and be the RAM group carried in fpga chip, mode of operation is the mode of FIFO, reads while write, and capacity is 8Kbytes, and adopt 80MHz clock, 64bits operates simultaneously, and read-write speed is 5.12Gbps; First passage buffer storage 303 major function sends buffer memory as passage high-speed channel, it is high-speed cache, and be the RAM group carried in fpga chip, mode of operation is FIFO mode, read while write, capacity is 2Kbytes2 frame AOS frame, and write operation is 80MHz clock, and 64bits operates simultaneously, speed is 5.12Gbps, read operation is 112.5MHz clock, and 4bits operates simultaneously, and speed is 450Mbps; Major function, the composition of second channel buffer storage 304 are consistent with first passage buffer storage 303 with read-write speed.
The data of output channel buffer memory are sent to the transmitter of rear end by the second interface module 4 by high-speed interfaces such as LVDS.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (5)
1. a spaceborne multi-load data frame transfer system, is characterized in that, comprise as lower device:
First interface module (1), for the load data to the unbalanced bit rate of data processing module (2) transmission multichannel;
Data processing module (2), for carrying out formatting, data framing, data storage, data scrambling, data output processing to the load data received;
Data cache module (3), carries out high-speed cache for the data exported data processing module (2);
Second interface module (4), for reading according to the speed of regulation the data of described output.
2. spaceborne multi-load data frame transfer system according to claim 1, it is characterized in that, interface module (1), obtain load data by LVDS interface or TLK2711 interface high-speed interface, then by the mode of bus by data stream transmitting to the data processing module of rear end (2).
3. spaceborne multi-load data frame transfer system according to claim 1, it is characterized in that, data processing module (2) comprises as lower device:
Receive buffer storage (201), for completing the data buffer storage of the different loads data flow of first interface module (1);
Scheduling multiple devices (202), the difference for the speed according to payload data stream is dispatched each load data buffer memory, multiple connection;
AOS framing device (203), for data cached for the load be filled with foundation CCSDS AOS standard packaging being become the AOS frame of standard, frame length is 1024Bytes;
Scrambling apparatus (204), for carrying out carrying out scrambling according to the pseudo random sequence of specifying to the data of AOS frame except synchronous head of standard;
Storage device (205), for carrying out data storage to the AOS frame completing scrambling.
4. spaceborne multi-load data frame transfer system according to claim 3, it is characterized in that, data cache module (3) comprising: level cache device (301), L2 cache device (302), first passage buffer storage (303) and second channel buffer storage (304);
Level cache data, for reading in as level cache data using CCSDS AOS frame data from storage device (205), are then sent to L2 cache device (302) by level cache device (301);
L2 cache device (302), for according to being input to the sequencing of L2 cache, by CCSDS AOS frame according to the form alternate transport of whole frame to first passage buffer storage (303) and second channel buffer memory (304).
5. spaceborne multi-load data frame transfer system according to claim 4, it is characterized in that, the data of the first output channel (303) and the second output channel (304) buffer memory are sent to the transmitter of rear end by described second interface module (4) by LVDS high-speed interface.
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Cited By (11)
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| CN104750871A (en) * | 2015-04-20 | 2015-07-01 | 哈尔滨工业大学 | Field programmable gate array (FPGA) based Advanced Orbiting Systems (AOS) satellite data transmission valid data area extraction system and method |
| CN105245313A (en) * | 2015-10-18 | 2016-01-13 | 中国电子科技集团公司第十研究所 | Multi-load data dynamic multiplexing method of unmanned aerial vehicle |
| CN105450288A (en) * | 2015-11-04 | 2016-03-30 | 中国人民解放军63680部队 | Simulated verification method of uplink data of multiple platform satellites |
| CN108400811A (en) * | 2018-02-13 | 2018-08-14 | 北京空间技术研制试验中心 | Spacelab information system based on advanced onboard processing method |
| CN110691039A (en) * | 2019-10-09 | 2020-01-14 | 上海航天电子通讯设备研究所 | Satellite-borne multichannel multi-terminal self-adaptive scheduling method and system |
| CN110874917A (en) * | 2018-08-30 | 2020-03-10 | 威伯科欧洲有限责任公司 | Cable adapter for collecting and transmitting analog signals, method and use thereof |
| CN111130691A (en) * | 2019-11-13 | 2020-05-08 | 航天东方红卫星有限公司 | Satellite-borne asynchronous rate communication matching device |
| CN113163146A (en) * | 2021-03-26 | 2021-07-23 | 上海卫星工程研究所 | Satellite image data simulation source and interface framework construction method and system |
| CN113824649A (en) * | 2021-09-17 | 2021-12-21 | 上海航天计算机技术研究所 | Data flow control device for fixed frame length |
| CN114416447A (en) * | 2022-01-12 | 2022-04-29 | 中国科学院国家空间科学中心 | Ground test system suitable for high-speed data acquisition and transmission of effective load |
| CN116909978A (en) * | 2023-09-13 | 2023-10-20 | 苏州浪潮智能科技有限公司 | Data framing method and device, electronic equipment and storage medium |
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Cited By (19)
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| CN104750871B (en) * | 2015-04-20 | 2017-11-17 | 哈尔滨工业大学 | AOS satellite data transmission valid data area's extraction system and method based on FPGA |
| CN104750871A (en) * | 2015-04-20 | 2015-07-01 | 哈尔滨工业大学 | Field programmable gate array (FPGA) based Advanced Orbiting Systems (AOS) satellite data transmission valid data area extraction system and method |
| CN105245313A (en) * | 2015-10-18 | 2016-01-13 | 中国电子科技集团公司第十研究所 | Multi-load data dynamic multiplexing method of unmanned aerial vehicle |
| CN105245313B (en) * | 2015-10-18 | 2018-05-04 | 中国电子科技集团公司第十研究所 | Unmanned plane multi-load data dynamic multiplexing method |
| CN105450288A (en) * | 2015-11-04 | 2016-03-30 | 中国人民解放军63680部队 | Simulated verification method of uplink data of multiple platform satellites |
| CN105450288B (en) * | 2015-11-04 | 2018-05-01 | 中国卫星海上测控部 | Multi-platform satellite uplink digital simulation verification method |
| CN108400811A (en) * | 2018-02-13 | 2018-08-14 | 北京空间技术研制试验中心 | Spacelab information system based on advanced onboard processing method |
| CN108400811B (en) * | 2018-02-13 | 2019-06-25 | 北京空间技术研制试验中心 | Spacelab information system based on advanced onboard processing method |
| CN110874917A (en) * | 2018-08-30 | 2020-03-10 | 威伯科欧洲有限责任公司 | Cable adapter for collecting and transmitting analog signals, method and use thereof |
| CN110691039A (en) * | 2019-10-09 | 2020-01-14 | 上海航天电子通讯设备研究所 | Satellite-borne multichannel multi-terminal self-adaptive scheduling method and system |
| CN111130691A (en) * | 2019-11-13 | 2020-05-08 | 航天东方红卫星有限公司 | Satellite-borne asynchronous rate communication matching device |
| CN111130691B (en) * | 2019-11-13 | 2022-08-12 | 航天东方红卫星有限公司 | Satellite-borne asynchronous rate communication matching device |
| CN113163146A (en) * | 2021-03-26 | 2021-07-23 | 上海卫星工程研究所 | Satellite image data simulation source and interface framework construction method and system |
| CN113163146B (en) * | 2021-03-26 | 2022-08-12 | 上海卫星工程研究所 | Satellite image data simulation source and interface framework construction method and system |
| CN113824649A (en) * | 2021-09-17 | 2021-12-21 | 上海航天计算机技术研究所 | Data flow control device for fixed frame length |
| CN113824649B (en) * | 2021-09-17 | 2023-10-27 | 上海航天计算机技术研究所 | Data flow control device for fixed frame length |
| CN114416447A (en) * | 2022-01-12 | 2022-04-29 | 中国科学院国家空间科学中心 | Ground test system suitable for high-speed data acquisition and transmission of effective load |
| CN116909978A (en) * | 2023-09-13 | 2023-10-20 | 苏州浪潮智能科技有限公司 | Data framing method and device, electronic equipment and storage medium |
| CN116909978B (en) * | 2023-09-13 | 2024-02-02 | 苏州浪潮智能科技有限公司 | Data framing method and device, electronic equipment and storage medium |
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