CN102932050A - Separation modular satellite system and method based on medium earth obit (MEO) data relay - Google Patents
Separation modular satellite system and method based on medium earth obit (MEO) data relay Download PDFInfo
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- CN102932050A CN102932050A CN2012104388360A CN201210438836A CN102932050A CN 102932050 A CN102932050 A CN 102932050A CN 2012104388360 A CN2012104388360 A CN 2012104388360A CN 201210438836 A CN201210438836 A CN 201210438836A CN 102932050 A CN102932050 A CN 102932050A
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Abstract
The invention discloses a separation modular satellite system and a method based on MEO data relay. The system comprises a separation modular satellite cluster, an MEO data relay system and an earth station, wherein the separation modular satellite cluster generates data after onboard processing and sends the data to the MEO data relay system; the MEO data relay system performs routing on the data and sends the data to the earth station in a transparent forwarding mode; and the earth station performs further analysis processing on the received data to obtain a final result. According to the system and the method, end-to-end delay of the separation modular satellite system can be effectively reduced, and therefore real-time data transmission of the separation modular satellite system is achieved.
Description
Technical field
The present invention relates to technical field of satellite communication, relate in particular in the micro-satellite technical field, for the system and method for splitting die blocking satellite real-time Data Transmission.
Background technology
Micro-satellite be the ASIM that forms take micro electronmechanical integrated technique with by several MEMS (micro electro mechanical system) as the satellite of a kind of novel concept on basis, its essence is a kind of distributed satellite structure system.Several grapefruit satellites are deployed on the tracks different in the space as the form of elementary cell with distributed constellation, method by remote measurement, remote control between them is connected to each other, and is formed with the unified system that is closely connected and finishes an original function that conventional satellite has.
As the focus of current space technology, each state has all launched active research to micro-satellite, and splitting die blocking satellite system becomes representative in the micro-satellite research field with advantages such as its low cost, high investment output ratio, high flexibilities.Splitting die blocking satellite system has adopted the concept of modularization and combination, it is each self-forming of the vitals independent moonlet one by one on traditional monomer satellite, the free flight in certain area of these satellites, adopt interconnected with wireless network, thereby jointly form a star bunch, flexibility and the extensibility of the standby height of this star cocooning tool, thereby have broad application prospects.
Existing splitting die blocking satellite system, support for real-time Data Transmission need to rely on data relay satellite system, and for a long time, data relay satellite system is all take the TDRSS Tracking and Data Relay Satellite System (TDRSS) of the U.S. as source, namely adopt 2-3 repeater satellite that is positioned at geostationary orbit, cover the earth low orbit spacecraft that is arranged in certain orbit altitude scope.This design is because required number of satellite is minimum, the transistroute agreement is the simplest between star, thereby obtained widely approval with its lower input, but limit by the characteristics of satellite communication system, the satellite that is positioned at geostationary orbit has larger time delay because of its too high track, higher track also requires larger launch cost simultaneously, therefore this design can not be supported the now multiple communication services of high speed development well, especially higher to delay requirement business, how under the prerequisite of controlling cost, improve the ability of splitting die blocking satellite system real-time Data Transmission, become a problem that needs to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention is, a kind of splitting die blocking satellite system based on middle rail data relay is provided, this system can significantly reduce system's end-to-end time delay significantly not increasing under the prerequisite of cost, realizes the real-time Data Transmission of splitting die blocking satellite system.
In order to address the above problem, the present invention proposes a kind of splitting die blocking satellite system based on middle rail data relay, comprising: splitting die blocking Satellite bunch, middle rail data relay system, ground station, wherein:
Splitting die blocking Satellite bunch for generation of the data through processing on the star, and sends to middle rail data relay system with these data;
Middle rail data relay system, be used to the suitable path of data selection of sending, mode with transparent forwarding is sent to ground station, this data relay system is arranged in earth rail track (MEO), orbit altitude is 10354km, lower more than 2/3 than the employed geostationary orbit of existing TDRSS Tracking and Data Relay Satellite System (TDRSS) (orbit altitude 35786km), thereby the propagation delay time of greatly reducing and satellite launch cost, in addition, the satellite that is arranged in earth rail track has larger coverage, therefore only needs to increase a small amount of satellite and can finish covering;
Ground station is used for the data of receiving are further analyzed processing, draws final result.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, only is used for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the splitting die blocking satellite system structural representation that the present invention is based on middle rail data relay.
Fig. 2 is splitting die blocking Satellite cluster data transmission mechanism schematic diagram in the system of the present invention.
Fig. 3 is the constellation structures schematic diagram of middle rail data relay system in the system of the present invention.
Fig. 4 is the flow chart that the present invention is based on the splitting die blocking satellite method of middle rail data relay.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is directed in the existing splitting die blocking satellite system, the excessive problem of end-to-end time delay that real-time Data Transmission adopts the TDRSS Tracking and Data Relay Satellite System be positioned at geostationary orbit to bring has proposed a kind of implementation method of the splitting die blocking satellite system based on middle rail data relay.
A kind of splitting die blocking satellite method based on middle rail data relay of the present invention comprises:
The data of processing on the star are passed through in bunch generation of splitting die blocking Satellite, and these data are sent to middle rail data relay system;
Middle rail data relay system is the suitable path of data selection of sending, and is sent to ground station in the mode of transparent forwarding;
Ground station is further analyzed processing to the data of receiving, draws final result.
As shown in Figure 1, shown splitting die blocking satellite system schematic diagram based on middle rail data relay.This system comprises:
Splitting die blocking Satellite bunch for generation of the data through processing on the star, and sends to middle rail data relay system with these data;
Middle rail data relay system is used to the suitable path of data selection of sending, and is sent to ground station in the mode of transparent forwarding;
Ground station is used for the data of receiving are further analyzed processing, draws final result.
As shown in Figure 2, shown splitting die blocking Satellite cluster data transmission schematic diagram.Splitting die blocking Satellite bunch comprises:
Payload is used for carrying the required imager of finishing the work, and imager produces initial data, and sends data to processor;
Processor is used for initial data is carried out preliminary treatment, comprises edge sharpening, Penetrating Fog and medium filtering, and the data after processing are sent to memory;
Memory is used for storing treated data, and sends data to over the ground communication module with constant speed;
Communication module over the ground, for separating of the data interaction between modularization Satellite bunch and the ground station, when ground station was in the coverage of communication module over the ground, data directly were sent to ground station, otherwise data will be transferred into middle rail data relay system.
The data transmission mechanism of splitting die blocking Satellite bunch comprises normal and unusual two kinds of mechanism.Normal mechanism is lower, and data are passed through successively: payload, processor, memory, communication module over the ground.When the processor in the star bunch, memory with over the ground during the one or more inefficacy among the communication module three, corresponding steps will be skipped, namely, if processor lost efficacy, then data are passed through successively: payload, memory, communication module over the ground, if out of memory, then data are passed through successively: payload, processor, communication module over the ground, if the three was all lost efficacy, then data directly are sent to middle rail data relay system by payload.In normal mechanism, also comprise a kind of extra mode: when comprising two and two above processors or memory in the star bunch, data will preferentially be sent to state more excellent purpose processor and memory.
The implementation method of the data transmission mechanism of splitting die blocking Satellite bunch is that the node periodic status is safeguarded, each node is broadcast state new data packets (State Update Packet) more in star bunch periodically, receive that the node of this packet is with the real-time status (resource utilization of oneself, idling-resource percentage etc.) data writing bag, and be back to source node, source node is kept at each node real-time status in the node state table of safeguarding, before sending data, take this node state table as reference, select suitable destination node.For example, behind certain node failure, in the state table of all the other nodes, the state of this node will stop to upgrade, and this node can't become destination node according to transmission mechanism this moment, until its state obtains till the renewal again.
As shown in Figure 3, the schematic diagram that has shown middle rail data relay system.This system is arranged in the earth rail track (MEO) that orbit altitude is 10354km, adopts the Walker-Delta constellation, and 8 satellites are evenly distributed on two planes altogether, 4 satellites in each plane, and its orbit inclination angle is 39.4 °.
As shown in Figure 4, shown splitting die blocking satellite method flow diagram based on middle rail data relay.Now in conjunction with Fig. 4, the splitting die blocking satellite system that the present invention is based on middle rail data relay is described.Specific as follows:
Step 401: the data of splitting die blocking Satellite bunch output through processing on the star, under normal data transfer mechanism, this step comprises:
Step 4011, payload produces initial data, and initial data is sent to processor;
Step 4012, processor carries out edge sharpening, Penetrating Fog and medium filtering to initial data, and the data after the processing are sent to memory;
Step 4013, memory is sent to over the ground communication module according to constant speed with treated data;
Step 4014, communication module is selected data directly are sent to ground or middle rail data relay system according to coverage condition over the ground.
Step 402: middle rail data relay system carries out route to data, and exports ground station to, and in this step, the routing procedure of middle rail data relay system comprises:
Step 4021 is received the repeater satellite of data, if with ground station as seen, then data directly are sent to ground station, otherwise in the sighting distance adjacent repeater satellite broadcast request bag (Route Request Packet);
Step 4022 is received the repeater satellite of routing request packet, if self and ground station are as seen, then with self and ground station feed back to the source satellite apart from length, otherwise will not feed back;
Step 4023, the source satellite compares the feedback of receiving, and the repeater satellite of chosen distance length minimum is next-hop node;
Step 4024, again rebound step 4021.
Step 403: ground station collects, analyzes and further deal with data, draws final result.
For the abnormal data transmission mechanism of splitting die blocking Satellite bunch, can carry out with reference to Fig. 2 and above-mentioned splitting die blocking Satellite cluster data transmission embodiment.Do not repeat them here.
The present invention is based on satellite communication correlation theory and principle, a kind of splitting die blocking satellite system and method based on middle rail data relay proposed, the method is under the prerequisite that considers systematic function and cost, adopted middle rail data relay system as the mode of splitting die blocking Satellite bunch real-time Data Transmission, compare with data relay system with the tracking that is positioned at geostationary orbit that employing is traditional, greatly reduce system's end-to-end time delay, effectively guaranteed the support of splitting die blocking satellite system to real-time data service.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. splitting die blocking satellite system based on middle rail data relay comprises: splitting die blocking Satellite bunch, middle rail data relay system, ground station, wherein:
Splitting die blocking Satellite bunch for generation of the data through processing on the star, and sends to middle rail data relay system with these data;
Middle rail data relay system is used to the suitable path of data selection of sending, and is sent to ground station in the mode of transparent forwarding;
Ground station is used for the data of receiving are further analyzed processing, draws final result.
2. the system as claimed in claim 1 is characterized in that, described splitting die blocking Satellite bunch comprises:
Payload is used for carrying the required imager of finishing the work, and imager produces initial data, and sends data to processor;
Processor is used for initial data is carried out preliminary treatment, comprises edge sharpening, Penetrating Fog and medium filtering, and the data after processing are sent to memory;
Memory is used for storing treated data, and sends data to over the ground communication module with constant speed;
Communication module over the ground, for separating of the data interaction between modularization Satellite bunch and the ground station, when ground station was in the coverage of communication module over the ground, data directly were sent to ground station, otherwise data will be transferred into middle rail data relay system.
3. the system as claimed in claim 1, it is characterized in that, described middle rail data relay system is arranged in the earth rail track (MEO) that orbit altitude is 10354km, adopt the Walker-Delta constellation, 8 satellites are evenly distributed on two planes altogether, 4 satellites in each plane, its orbit inclination angle is 39.4 °.
4. the system as claimed in claim 1 is characterized in that, over the ground communication module and the middle rail data relay system of described ground station in can separated modularization Satellite bunch covers.
5. splitting die blocking satellite method based on middle rail data relay comprises:
A. the data of processing on the star are passed through in bunch generation of splitting die blocking Satellite, and these data are sent to middle rail data relay system;
B. middle rail data relay system is the suitable path of data selection of sending, and is sent to ground station in the mode of transparent forwarding;
C. ground station is further analyzed processing to the data of receiving, draws final result.
6. method as claimed in claim 5 is characterized in that, steps A comprises:
A1, payload produces initial data, and initial data is sent to processor;
A2, processor carries out edge sharpening, Penetrating Fog and medium filtering to initial data, and the data after the processing are sent to memory;
A3, memory is sent to over the ground communication module according to constant speed with treated data;
A4, communication module is selected data directly are sent to ground or middle rail data relay system according to coverage condition over the ground.
7. method as claimed in claim 5 is characterized in that, the routing procedure among the step B comprises:
B1 receives the repeater satellite of data, if with ground station as seen, then data directly are sent to ground station, otherwise in the sighting distance adjacent repeater satellite broadcast request bag (Route Request Packet);
B2 receives the repeater satellite of routing request packet, if self and ground station are as seen, then with self and ground station feed back to the source satellite apart from length, otherwise will not feed back;
B3, the source satellite compares the feedback of receiving, and the repeater satellite of chosen distance length minimum is next-hop node;
B4, again rebound step 4021.
8. method as claimed in claim 5 is characterized in that, the ground station among the step C both can receive in the splitting die blocking Satellite bunch the over the ground data of communication module, the data of repeater satellite in the rail data relay system in also can receiving.
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| CN103916177A (en) * | 2014-01-23 | 2014-07-09 | 北京邮电大学 | Building method of communication scheme and interlayer interstellar link based on GEO-IGSO/MEO double-layer satellite network |
| CN104743141A (en) * | 2015-04-03 | 2015-07-01 | 上海微小卫星工程中心 | High-speed aircraft positioning method with satellite constellation |
| CN106788660A (en) * | 2016-12-29 | 2017-05-31 | 北京邮电大学 | A kind of deep space communication system and method |
| CN107483097A (en) * | 2017-07-28 | 2017-12-15 | 航天东方红卫星有限公司 | Exchange method between a kind of low rate star based on positional information |
| CN108702204A (en) * | 2015-12-18 | 2018-10-23 | 空中客车防务和空间公司 | Method and system for obtaining image by the constellation of observation satellite |
| CN108832985A (en) * | 2018-05-02 | 2018-11-16 | 中国人民解放军32039部队 | Mobile IP communication system and method for repeater satellite Incorporate network |
| CN108989223A (en) * | 2018-06-13 | 2018-12-11 | 昆宇蓝程（北京）科技有限责任公司 | A kind of satellite routing algorithm under strong link constraints |
| CN110291727A (en) * | 2017-02-10 | 2019-09-27 | 空中客车防务与航天有限公司 | Ultralow delay telecommunication system |
| CN110515744A (en) * | 2019-08-14 | 2019-11-29 | 北京邮电大学 | A kind of method of spacecraft software information interaction |
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| CN103916177A (en) * | 2014-01-23 | 2014-07-09 | 北京邮电大学 | Building method of communication scheme and interlayer interstellar link based on GEO-IGSO/MEO double-layer satellite network |
| CN104743141A (en) * | 2015-04-03 | 2015-07-01 | 上海微小卫星工程中心 | High-speed aircraft positioning method with satellite constellation |
| CN104743141B (en) * | 2015-04-03 | 2017-01-18 | 上海微小卫星工程中心 | High-speed aircraft positioning method with satellite constellation |
| CN108702204B (en) * | 2015-12-18 | 2019-09-10 | 空中客车防务和空间公司 | The method and system of image is obtained for the constellation by observation satellite |
| CN108702204A (en) * | 2015-12-18 | 2018-10-23 | 空中客车防务和空间公司 | Method and system for obtaining image by the constellation of observation satellite |
| CN106788660A (en) * | 2016-12-29 | 2017-05-31 | 北京邮电大学 | A kind of deep space communication system and method |
| US11424820B2 (en) | 2017-02-10 | 2022-08-23 | Airbus Defence And Space Limited | Ultra-low latency telecommunications satellite |
| CN110291727B (en) * | 2017-02-10 | 2022-08-09 | 空中客车防务与航天有限公司 | Ultra low delay telecommunications system |
| CN110291727A (en) * | 2017-02-10 | 2019-09-27 | 空中客车防务与航天有限公司 | Ultralow delay telecommunication system |
| CN107483097B (en) * | 2017-07-28 | 2019-08-09 | 航天东方红卫星有限公司 | Method is exchanged between a kind of low rate star based on location information |
| CN107483097A (en) * | 2017-07-28 | 2017-12-15 | 航天东方红卫星有限公司 | Exchange method between a kind of low rate star based on positional information |
| CN108832985A (en) * | 2018-05-02 | 2018-11-16 | 中国人民解放军32039部队 | Mobile IP communication system and method for repeater satellite Incorporate network |
| CN108989223A (en) * | 2018-06-13 | 2018-12-11 | 昆宇蓝程（北京）科技有限责任公司 | A kind of satellite routing algorithm under strong link constraints |
| CN110516588A (en) * | 2018-12-29 | 2019-11-29 | 长沙天仪空间科技研究院有限公司 | A kind of remote sensing satellite system |
| WO2020134856A1 (en) * | 2018-12-29 | 2020-07-02 | 长沙天仪空间科技研究院有限公司 | Remote sensing satellite system |
| CN110515744A (en) * | 2019-08-14 | 2019-11-29 | 北京邮电大学 | A kind of method of spacecraft software information interaction |
| CN111114833A (en) * | 2019-12-11 | 2020-05-08 | 上海卫星工程研究所 | Method and system for compatible track maintenance and relay application based on autonomous mission planning |
| CN111114833B (en) * | 2019-12-11 | 2021-08-20 | 上海卫星工程研究所 | Method and system for compatible track maintenance and relay application based on autonomous mission planning |
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