CN106850034B - Low orbit satellite data transmission system - Google Patents
Low orbit satellite data transmission system Download PDFInfo
- Publication number
- CN106850034B CN106850034B CN201710091104.1A CN201710091104A CN106850034B CN 106850034 B CN106850034 B CN 106850034B CN 201710091104 A CN201710091104 A CN 201710091104A CN 106850034 B CN106850034 B CN 106850034B
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- satellite
- transmitting
- low orbit
- receiving
- ground
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Classifications
-
- 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
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
-
- 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
-
- 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
- H04B7/18517—Transmission equipment in earth stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Abstract
The invention discloses low orbit satellite data transmission systems, comprising: low orbit satellite sending and receiving end and terrestrial user terminals；The terrestrial user terminals send location information to the low orbit satellite sending and receiving end, and low orbit satellite sending and receiving end transmission antenna is directed toward terrestrial user terminals, and sends business datum.
Description
Technical field
The invention belongs to wireless communication field, in particular to a kind of low orbit satellite data transmission system.
Background technique
Low orbit satellite data transmission system is common one of the system of low orbit satellite, is mainly used for Satellite Payloads number
According to passing down at a high speed.It is limited to constraint of the low orbit satellite platform in resource and the energy, is accurately referred to solve low orbit satellite spot beam
To the problem of, sent at present using satellite broad beam, the tracking of ground major station the big antenna of 6m bore (general use) high-gain connects
It receives, the construction cost of ground major station is higher, quantity available is less, poor mobility, and also needs after ground major station reception data
Secondary transmission is carried out, the extensive use of satellite is largely limited.
Summary of the invention
Problems solved by the invention is that existing low orbit satellite data transmission technology is at high cost, low efficiency；To be asked described in solution
Topic, the present invention provide low orbit satellite data transmission system.
Low orbit satellite data transmission system provided by the invention, comprising: low orbit satellite sending and receiving end and terrestrial user terminals；Institute
It states terrestrial user terminals and sends location information to the low orbit satellite sending and receiving end, low orbit satellite sending and receiving end transmission antenna is directed toward ground
User terminal, and send business datum.
Further, the low orbit satellite sending and receiving end includes broad beam receiving antenna, satellite transmitting-receiving process system, phased array electricity
Sweep transmitting spot beam anternma；The broad beam receiving antenna receives terrestrial user terminals uplink signal；The satellite transmitting-receiving process
The system processing uplink signal, obtains location information, and guidance phased array electricity sweeps transmitting spot beam anternma and is directed toward and tracks ground
User terminal, user terminal sends business datum to the ground.
Further, the satellite transmitting-receiving process system includes: to sweep the transmitting that transmitting spot beam anternma is connect with phased array electricity
End, the receiving end being connect with broad beam receiving antenna, processing module and control module；The processing module receives receiving end
Signal carry out processing reduction, the information after reduction after decoding as to downstream module control and downlink signal formed according to
According to, eventually form downlink transmission high frequency electrical signal；Control module controls transmitting terminal, receiving end and processing module work.
Further, the terrestrial user terminals include: ground transmitting-receiving process system and ground dual-mode antenna；It receives on the ground
Hair processing system predicts satellite transit time according to the satellite ephemeris prestored, and in the course of transit sends position to satellite in satellite and believe
Breath.
Further, the ground transmitting-receiving process system includes: ground transmitting-receiving process communication equipment, ground dual-mode antenna and servo
Mechanism, the hand-held control in ground and the aobvious Miniature Terminal of prison；The hand-held control in ground and the aobvious Miniature Terminal of prison contain message processing module and letter
Memory module is ceased, message processing module predicts satellite transit time, and controls ground transmitting-receiving process communication equipment, ground dual-mode antenna
And servo mechanism photos and sending messages, and have and apply data-handling capacity, it can quickly show processing result；Information storage module storage letter
Breath is stored by almanac data and using data.
The invention has the advantages that
Technical solution of the present invention, small-scale terrestrial user terminal are realized using small-scale terrestrial dual-mode antenna to the wireless of satellite
Telecommunication, satellite broad beam receive spot beam and send, and small-scale terrestrial user terminal is in the course of transit believed by low speed upstream in satellite
Road active reporting own location information, satellite reception simultaneously extract guidance phased array electricity after small-scale terrestrial position information of user's terminal and sweep
Transmitting spot beam transmission antenna is accurately directed to, and is sent to realize to the high-gain spot beam of small-scale terrestrial user terminal.This is
System scheme is convenient to carry out Miniaturization Design to terminal, reduces cost, easy to carry and mobile, terminal user can be according to real-time need
It asks, directly carries out two-way communication with satellite, enter in satellite and guide and order injection in visual segmental arc by upper note position, obtain
The real-time or delay data that satellite issues.
Detailed description of the invention
Fig. 1 is the schematic diagram of low orbit satellite data transmission system provided in an embodiment of the present invention；
Specific embodiment
Hereinafter, spirit and substance of the present invention are further elaborated in conjunction with the accompanying drawings and embodiments.
As stated in the background art, the data that low orbit satellite issues, ground major station are received using ground major station in the prior art
The problem of can solve data receiver；But since structure is complicated, volume is big, poor mobility for ground major station, cause at high cost, effect
Rate is low；And ground major station also needs the secondary transmission of user terminal to the ground after receiving；It is required to mention in addition, obtaining data every time
Preplanning, arranges resource, and the data of acquisition have certain time delay；To solve described problem, the present invention provides a kind of low rail and defends
Star Transmission system and method.
As shown in Figure 1, low orbit satellite Transmission system provided by the invention, comprising: low orbit satellite sending and receiving end and terrestrial user
Terminal；The low orbit satellite sending and receiving end includes that broad beam receiving antenna 02, satellite transmitting-receiving process system 01, phased array electricity sweep transmitting
Spot beam anternma 03；The broad beam receiving antenna 03 receives terrestrial user terminals uplink signal；Satellite transmitting-receiving process system
System handles the uplink signal, obtains location information, guidance control phased array transmitter-on, and phased array electricity is swept launch point
Beam antenna 03 is directed toward and tracks terrestrial user terminals, and user terminal casting track and status data, subsequent ground are used to the ground
Family terminal sends task and data request command after receiving satellite state information, and phased array electricity sweeps transmitting spot beam anternma 03 and is
Uplink/downlink antenna is directed toward always and tracks terrestrial user terminals and sends business datum according to task and request of data.
The terrestrial user terminals include: ground transmitting-receiving process communication equipment 11, ground dual-mode antenna and servo mechanism 12,
The hand-held control in face and the aobvious Miniature Terminal 13 of prison；The hand-held control in the ground and the aobvious Miniature Terminal of prison are pre- according to the satellite ephemeris prestored
Satellite transit time is surveyed, and ground transmitting-receiving process communication equipment, ground transmitting-receiving day are in the course of transit controlled by wifi module in satellite
Line and servo mechanism are to satellite transmission own location information, and after satellite is directed toward terminal, the hand-held control in ground and prison show small-sized end
The state and orbit information real-time display for issuing the satellite received, while user's editable assignment instructions are held, are sent to satellite
Request, and receive the business datum that satellite issues.
The satellite transmitting-receiving process system includes: to sweep the transmitting terminal that transmitting spot beam anternma is connect with phased array electricity, with width
The receiving end of wave beam receiving antenna connection, processing module and control module；The signal that the processing module receives receiving end
Processing reduction is carried out, the information after reduction is after decoding as the foundation formed to downstream module control and downlink signal；Simultaneously
Downward signal of satellite is compiled, is modulated, is filtered, the processing such as up-conversion form the high frequency electrical signal that downlink is sent, and send
Transmitting spot beam anternma is swept to phased array electricity；Control module controls transmitting terminal, receiving end and processing module work.
The present invention also provides the transmission methods using the low orbit satellite Transmission system, comprising:
Step 1: terrestrial user terminals predict transit time according to ephemeris, location information is sent to low orbit satellite sending and receiving end；
Step 2: low orbit satellite receives location information by broad beam, uplink/downlink antenna is directed toward user terminal, to user terminal
Send ephemeris and status information.
Step 3: terrestrial user terminals receive ephemeris and status information, user's decision sends assignment instructions information.
Step 4: low orbit satellite transmitting-receiving process system receives task, and task is executed, as requested issuing service number
According to.
Step 5: terrestrial user terminals receive business datum and carry out parsing and fast view to data.
The step 1 includes:
Satellite is directed toward in step 1.1, terrestrial user terminals prediction satellite transit time and track, control antenna servo tracking；
Step 1.2, terrestrial user terminals (PAD) obtain warp, the latitude, high information of present position by GPS module, answer
ECEF coordinate system is converted thereof into software, forms fixed frame format, starts to continuously transmit to satellite in satellite immigration,
The signal that issues of satellite to be received and the synchronizing information such as simultaneously.
The step 2 includes:
Step 2.1, low orbit satellite sending and receiving end receive the location information, are verified and are carried out to the information received
Reduction；
User location and satellite orbit and posture meter are combined after step 2.2, low orbit satellite sending and receiving end are correct to position verification
Beam direction is calculated, beam-control code control downlink spot beam is formed and is directed toward.
Step 2.3, the control of low orbit satellite sending and receiving end send power amplifier and open, and phased array electricity sweeps transmitting spot beam anternma and is directed toward ground
Face user terminal starts the orbit information and satellite state information that send satellite.
The step 3 includes:
Step 3.1, ground transmitting-receiving process communication equipment receive the track and status information that satellite issues, and information is passed through
Wifi reaches hand-held control and supervises aobvious Miniature Terminal (PAD), shows health status and orbit information, and it is enough for providing judgement for user
Continue to execute the foundation of task.
Step 3.2, user may be selected program and determine transmission preset instructions or the mode that sends manually of user by task automatically
Command information is sent to satellite, completes real-time task request.
The step 4 includes:
Step 4.1, low orbit satellite sending and receiving end receive the real-time task request instruction, according to instruction format checking command code
Correctness.
Step 4.2, decision instruction type directly decode simultaneously if instruction pertains only to the execution of low orbit satellite Transmission system
It executes, issues requested business datum.If the cooperation that instruction is related to the other systems of satellite executes, instruction is transmitted to star
Business computer executes relevant control according to mission requirements by Star Service, and forms business datum, and transmit by the low orbit satellite
System issues data.
The step 5 includes:
Step 5.1, ground transmitting-receiving process communication equipment receive the business datum that satellite issues, and business datum is passed through in real time
Wifi is transmitted to hand-held control and supervises aobvious Miniature Terminal (PAD).
Business datum is carried out dissection process by step 5.2, hand-held control and prison aobvious Miniature Terminal (PAD), and is completed real-time
Display.
To sum up, in technical solution of the present invention, system has two channels of uplink and downlink, and satellite is received using broad beam low speed
Information and assignment instructions information are injected in ground based terminal position, and satellite sweeps transmitting spot beam using phased array electricity and realizes that high speed is sent out over the ground
It send；Small-scale terrestrial user terminal predicted orbit and immigration time before this on communication process, in satellite in the course of transit active reporting
Own location information, satellite broad beam antenna use the location information of small-scale terrestrial user terminal to guide satellite phased array after receiving
E-scan antenna transmitting spot beam is accurately directed to ground based terminal, and the foundation of bidirectional communication link, is realized to small-scale terrestrial with completing star
The high-gain spot beam of user terminal is sent；Satellite broad beam receives and spot beam transmitting cooperation solves low orbit satellite spot beam
It is accurately directed to difficult and satellite broad beam gain and is unable to satisfy the received problem of ground Miniature Terminal high speed, realize small-scale terrestrial
Terminal is directly facing satellite two-way communication function.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (4)
1. low orbit satellite data transmission system characterized by comprising low orbit satellite sending and receiving end and terrestrial user terminals；It is described
Terrestrial user terminals send location information to the low orbit satellite sending and receiving end, and low orbit satellite sending and receiving end transmission antenna is directed toward ground and uses
Family terminal, and send business datum；The low orbit satellite sending and receiving end include broad beam receiving antenna, satellite transmitting-receiving process system,
Phased array electricity sweeps transmitting spot beam anternma；The broad beam receiving antenna receives terrestrial user terminals uplink signal；The satellite
The transmitting-receiving process system processing uplink signal, obtains location information, and guidance phased array electricity is swept transmitting spot beam anternma and is directed toward simultaneously
Terrestrial user terminals are tracked, user terminal sends business datum to the ground.
2. low orbit satellite data transmission system according to claim 1, which is characterized in that the satellite transmitting-receiving process system
It include: to sweep the transmitting terminal that transmitting spot beam anternma is connect, the receiving end connecting with broad beam receiving antenna, processing with phased array electricity
Module and control module；The processing module carries out processing reduction to the signal that receiving end receives, and satellite-signal is handled shape
The high frequency electrical signal sent at downlink；Control module controls transmitting terminal, receiving end and processing module work.
3. low orbit satellite data transmission system according to claim 1, which is characterized in that the terrestrial user terminals packet
It includes: ground transmitting-receiving process system and ground dual-mode antenna；The ground transmitting-receiving process system is predicted according to the satellite ephemeris prestored
Satellite transit time, and location information in the course of transit is sent to satellite in satellite.
4. low orbit satellite data transmission system according to claim 3, which is characterized in that the ground transmitting-receiving process system
It include: information storage module and message processing module；Message processing module predicts satellite transit time, and controls at the transmitting-receiving of ground
Reason system sending and receiving information；Information storage module stores information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091104.1A CN106850034B (en) | 2017-02-20 | 2017-02-20 | Low orbit satellite data transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091104.1A CN106850034B (en) | 2017-02-20 | 2017-02-20 | Low orbit satellite data transmission system |
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| CN106850034A CN106850034A (en) | 2017-06-13 |
| CN106850034B true CN106850034B (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710091104.1A Active CN106850034B (en) | 2017-02-20 | 2017-02-20 | Low orbit satellite data transmission system |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106888047B (en) * | 2017-02-20 | 2019-07-23 | 上海微小卫星工程中心 | Low orbit satellite data transmission method |
| CN108494469A (en) * | 2018-02-02 | 2018-09-04 | 北京国电高科科技有限公司 | A kind of communication means of downlink for data gathering system load |
| CN109037968B (en) * | 2018-07-24 | 2021-04-09 | 上海微小卫星工程中心 | Low-orbit satellite access antenna system with combination of wide and narrow beams |
| CN109768824A (en) * | 2019-01-17 | 2019-05-17 | 西安电子科技大学 | Low orbit satellite data transmission method, system, computer equipment and storage medium |
| CN110011725B (en) * | 2019-05-07 | 2020-10-23 | 中国人民解放军32039部队 | Relay satellite tracking method and device |
| CN110489226B (en) * | 2019-07-05 | 2021-11-09 | 中国科学院国家空间科学中心 | Space-based resource on-orbit virtualization method based on available capacity calculation |
| CN112636809A (en) * | 2020-12-07 | 2021-04-09 | 山东航天电子技术研究所 | Satellite-borne relay user terminal supporting SSA and SMA links |
| CN114509790A (en) * | 2022-02-17 | 2022-05-17 | 北京国电高科科技有限公司 | Positioning method and positioning system based on low-orbit satellite constellation |
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| US8120528B2 (en) * | 2008-05-14 | 2012-02-21 | Thomas Ronald Tessier | Apparatus for satellite telecommunications |
| CN104079496A (en) * | 2014-07-02 | 2014-10-01 | 南京邮电大学 | Double-deck satellite load balancing method based on link cost conversion |
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| CN106850034A (en) | 2017-06-13 |
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