CN108540208A - A kind of onboard system of laser beam communications satellite - Google Patents
A kind of onboard system of laser beam communications satellite Download PDFInfo
- Publication number
- CN108540208A CN108540208A CN201810362859.5A CN201810362859A CN108540208A CN 108540208 A CN108540208 A CN 108540208A CN 201810362859 A CN201810362859 A CN 201810362859A CN 108540208 A CN108540208 A CN 108540208A
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- satellite
- laser
- ground
- communication terminal
- laser communication
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- 238000004891 communication Methods 0.000 title claims abstract description 172
- 239000011159 matrix material Substances 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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
- H04B7/185—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
-
- 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
- H04B7/18519—Operations control, administration or maintenance
-
- 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
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
Abstract
The invention discloses a kind of onboard systems of laser beam communications satellite, are related to technical field of laser communication, and main purpose is to realize that one satellite of synchronization provides service for multiple laser communication terminals under lower cost.The onboard system of laser beam communications satellite of the present invention includes:Laser communication terminal and electric cabinet；The electric cabinet is used for the power supply of laser communication terminal, provides control instruction and information flow；The laser communication terminal includes at least two Space laser communications terminals and multiple satellite-ground laser communication terminals；At least two Space laser communications terminal is used to carry out laser two-way communication with other satellites；The multiple satellite-ground laser communication terminal with the earth station of corresponding number, aircraft for carrying out two-way laser communication simultaneously；Wherein, the subtended angle over the ground of satellite where each satellite-ground laser communication terminal can scan it.Present invention is mainly used for the data transmissions of aircraft.
Description
Technical field
The present invention relates to a kind of technical field of laser communication, more particularly to a kind of onboard system of laser beam communications satellite.
Background technology
Currently, air communications is mainly realized by microwave satellite.When being communicated by the Microwave Radio, due to nothing
Line electric frequency is the basis that aviation aircraft and inter-satellite are able to normal communication, is the channel of information transmission, in order to prevent satellite
Between electromagnetic interference, need to keep the certain intervals of communication frequency to carry out frequency isolation, therefore radio-frequency spectrum is by International Telecommunication Association
(ITU) and the stringent management and control of national governments.In addition, radio communication has that frequency spectrum saturation and communication bandwidth are limited,
It is difficult to meet the high-speed transfer demand of mass data, more cannot achieve aircraft itself magnanimity flying quality (single rack aircraft
10GB/s magnitudes) real-time Transmission.
Therefore, also occur now some using laser communication link come carry out satellite and earth station communication communication system
System, although laser space communication has a clear superiority, such as with high data rate, large capacity and high confidentiality etc. are special
Property.But the beam divergence angle of laser is relatively narrow, a general laser beam other laser communication terminals can only be led to one
Letter；It is typically provided with a laser communication terminal in a current satellite, to realize that synchronization, satellite are multiple laser communications
Terminal service can only realize that this kind of mode cost is high by way of emitting multi-satellite.
Invention content
The present invention provides a kind of onboard system for laser beam communications satellite, and main purpose is to realize lower cost similarly hereinafter
One satellite of moment one provides service for multiple laser communication terminals.
Technical solution is used by the present invention solves above-mentioned technical problem：
A kind of onboard system of laser beam communications satellite, including:
Laser communication terminal and electric cabinet；
The electric cabinet is used for the power supply of laser communication terminal, provides control instruction and information flow；
The laser communication terminal includes at least two Space laser communications terminals and multiple satellite-ground laser communication terminals；
At least two Space laser communications terminal is used to carry out laser two-way communication with other satellites；
The multiple satellite-ground laser communication terminal is two-way for being carried out simultaneously with the earth station of corresponding number and/or aircraft
Laser communication；
Wherein, the subtended angle over the ground of satellite where each satellite-ground laser communication terminal can scan it.
Further, the satellite over the ground subtended angle size be cone angle A, the scanning range of the satellite-ground laser communication terminal
For cone angle B, wherein B >=A.
Further, the size of the scanning range of the multiple satellite-ground laser communication terminal is identical or different.
Further, arbitrary arrangement in satellite of the multiple satellite-ground laser communication terminal where it.
Further, it is arranged according to scheduled communication array in satellite of the multiple satellite-ground laser communication terminal where it
Row.
Further, the matrix shape that the scheduled communication array is n × n arranges, and n is the natural number more than 2；
Alternatively,
The scheduled communication array is circular array, square array or diamond shape array.
Further, the multiple satellite-ground laser communication terminal is installed on the mounting surface on satellite.
Further, the mounting surface is a flat surface.
Further, the Space laser communications terminal is used to carry out laser with the satellite in the same orbital plane of the satellite logical
Letter connection, and/or connect for carrying out laser communication with the satellite in other orbital planes.
Compared with prior art, the onboard system of laser beam communications satellite provided by the invention, provided with multiple stars laser
Communication terminal, the multiple satellite-ground laser communication terminal are two-way sharp for being carried out simultaneously with the earth station of corresponding number, aircraft
Optic communication so that a satellite synchronization can be that multiple laser communication terminals are serviced, and greatly reduce laser communication
The cost of serving of terminal.Also, in the present invention, pair of satellite where each satellite-ground laser communication terminal can scan it
Ground subtended angle so that the flexibility that multiple laser communication terminals use is more preferable, and earth station, aircraft can be allowed preferably to capture this and swashed
Optical communication terminal.
Description of the drawings
Fig. 1 is the schematic diagram of the onboard system of the laser communication system satellite of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the satellite subtended angle over the ground of the embodiment of the present invention；
Fig. 3 is that a kind of multiple scheduled communication arrays of satellite-ground laser communication terminal of the embodiment of the present invention arrange schematic diagram；
Fig. 4 is the scheduled communication array arrangement signal of the multiple satellite-ground laser communication terminals of another kind of the embodiment of the present invention
Figure.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
As shown in Figure 1, the onboard system of laser beam communications satellite includes electric cabinet 10 and laser communication terminal 20.Electric cabinet 10
For giving the power supply of laser communication terminal, providing observing and controlling instruction and information flow.The laser communication terminal of laser communication terminal 20 includes
Two kinds, one kind is Space laser communications terminal 201, and another kind is satellite-ground laser communication terminal 202.
Wherein, the Space laser communications terminal 201 at least two, for whole with the Space laser communications on other satellites
End is communicated, to realize intersatellite laser communication.For example, can will be between the passing of satelline star in same orbital plane
Laser communication terminal is in turn connected to form a satellite communication network, or can also be the passing of satelline star in different orbital planes
Between laser communication terminal be interconnected to form a netted satellite communication network.
Satellite-ground laser communication terminal 202 be it is multiple, for simultaneously with the aircraft of the corresponding number in satellite coverage,
Laser communication terminal on earth station system is communicated.Wherein, each satellite-ground laser communication terminal can scan it
The subtended angle over the ground of place satellite.
At this it should be noted that each satellite-ground laser communication terminal in communication respectively with an aircraft or ground
It stands and carries out laser link communication, therefore, the number of satellite-ground laser communication terminal, which determines, carries out laser in satellite unified time section
The aircraft of link communication and the number of earth station can be carried out at the same time the number of the sharp communication terminal of laser link communication.
The angular range for the earth that each satellite can cover, with the distance between satellite and the earth and earth outer rail
The number of satellite is related in road, and the range that each satellite-ground laser communication terminal can scan, and should be defended more than or equal to this
Star the covered earth range.
Based on foregoing description, the passing of satelline Space laser communications terminal in the above-mentioned same orbital plane is in turn connected to form
After one satellite communication network, as long as the satellite-ground laser communication terminal on one of satellite and the laser on earth station system are logical
Letter terminal is in communication with each other, you can realizes the satellite in entire orbital plane and the two-way communication of earth station.And in the orbital plane
All satellites can be communicated by satellite-ground laser communication terminal with the laser communication terminal in aircraft, for installation
There is the aircraft of aircraft to provide network service, and for itself mass data of aircraft to be descended into ground by network
It stands.
In the embodiment of the present invention, the onboard system of laser beam communications satellite is provided with multiple satellite-ground laser communication terminals, described
Multiple satellite-ground laser communication terminals with the earth station of corresponding number, aircraft for carrying out two-way laser communication simultaneously so that one
Satellite synchronization can be that multiple laser communication terminals be serviced, greatly reduce the service of laser communication terminal at
This.Also, in the present invention, the subtended angle over the ground of satellite where each satellite-ground laser communication terminal can scan it so that
The flexibility that multiple laser communication terminals use is more preferable, and earth station, aircraft can be allowed preferably to capture the laser communication terminal.
Further, the number of satellites in extraterrestrial satellite orbit is n, which surrounds circumterrestrial one
Circle, and cover the range of this circle of the earth.As shown in Figure 2.For example, the radius where the orbital plane is r, and apart from ground
The distance of ball is h, and h can be 1000km-5000km, and the number of satellite is n, and the size of each satellite subtended angle over the ground is cone angle
A, satellite subtended angle over the ground, i.e., using the line of satellite and earth center as the symmetrical cone angle in axle center.In order to make each orbital plane
The number of satellites of upper setting is minimum, i.e., the subtended angle over the ground of each satellite is maximum, the outermost and earth surface of satellite subtended angle over the ground
It is tangent, i.e. the A=2arccos (r/r+h).Such as when the distance of the orbital distance earth of the satellite is 1000km, the then satellite
The subtended angle size to earth station be 120 degree of cone angle.
Due on each satellite satellite-ground laser communication terminal have it is multiple, what satellite-ground laser communication terminal can scan
Range is bigger, it is meant that the scanning angle of the satellite-ground laser communication terminal is bigger, can be provided for the aircraft of longer line-spacing
Service, within the scope of the cone angle of the subtended angle over the ground A of the satellite, range that the satellite-ground laser communication terminal on satellite can scan it is big
Small is cone angle B, and B >=A.The size of the scanning range of multiple satellite-ground laser communication terminal, i.e. cone angle, identical also can may be used
With difference, as long as each scanning range can cover the surface sweeping range of satellite over the ground.
Further, due to cone angle B >=A of satellite-ground laser communication terminal provided in an embodiment of the present invention, each star
Laser communication terminal can be covered with the range that complete independently satellite scans over the ground, therefore multiple satellite-ground laser communication terminals are in satellite
In when being laid out, can be laid out in any way, such as can be the matrix shape row that scheduled communication array be n × n
Row, n are the natural number more than 2, and it can be non-array to have, and specific it is not limited by the embodiments of the present invention.
In order in the limited space of satellite, place relatively large number of satellite-ground laser communication terminal, the embodiment of the present invention exists
When it is implemented, it is preferred that multiple laser communication terminals are arranged according to scheduled communication array, specifically, as shown in figure 3, multiple
Laser communication terminal is arranged according to the matrix shape of n × n, such as N is 7, and the multiple satellite-ground laser communication terminal is divided at equal intervals
Cloth.
At this it should be noted that when to multiple stars satellite communication terminal carries out spaced, in addition to above-mentioned
Other than that says is spacedly distributed, it can be distributed with unequal interval, specifically, it is not limited by the embodiments of the present invention, as long as
Mutual distance does not influence the range of its actual scanning.
In addition, it is necessary to explanation, due to as described above, the satellite-ground laser communication terminal in the embodiment of the present invention is each
It is a that all standing of the scanning range over the ground of satellite where it may be implemented, therefore cloth is being carried out to multiple satellite-ground laser communication terminal
When office, not necessarily matrix shape arranges, can also be along circular arrangement, rectangular or diamond array or other shapes
Arrangement, the spacing distance between multiple satellite-ground laser communication terminal can be it is identical can also be different, can be according to a set pattern
Rule arrangement, can also be disorderly arranged, specifically, it is not limited by the embodiments of the present invention.As shown in figure 4, in diamond shape
For laser communication terminal room does not arrange equidistantly.I.e. the satellite-ground laser communication terminal on satellite according to scheduled communication array
Arrangement, which can be circular array, square array or diamond shape array or matrix array.
It should be noted that multiple satellite-ground laser communication terminal, can be arranged on a mounting surface of satellite, the peace
Dress face can be plane, or spherical convex surface or spherical concave surface, the mounting surface are set to side of the satellite towards the earth.
In the embodiment of the present invention, the onboard system of laser beam communications satellite is provided with multiple satellite-ground laser communication terminals, described
Multiple satellite-ground laser communication terminals with the earth station of corresponding number, aircraft for carrying out two-way laser communication simultaneously so that one
Satellite synchronization can be that multiple laser communication terminals be serviced, greatly reduce the service of laser communication terminal at
This.Also, in the present invention, the subtended angle over the ground of satellite where each satellite-ground laser communication terminal can scan it so that
The flexibility that multiple laser communication terminals use is more preferable, and earth station, aircraft can be allowed preferably to capture the laser communication terminal.
And the bright embodiment of the present invention may be implemented to use laser communication link between satellite, aircraft and earth station
It is communicated, instead of the communication realized conventionally by microwave between satellite and aircraft, has evaded the difficulty of radio-frequency spectrum control
Topic.In addition, since laser communication has transmission rate fast (more than 1Gbps), with roomy, information capacity is big, is conducive to solve to fly
The requirement of device, especially airline carriers of passengers mass data transmission.
Although the preferred embodiment of the present invention described in detail above, it is to be clearly understood that for this field
Technical staff for, the invention may be variously modified and varied.Appoint made by all within the spirits and principles of the present invention
What modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of onboard system of laser beam communications satellite, which is characterized in that including:
Laser communication terminal and electric cabinet；
The electric cabinet is used for the power supply of laser communication terminal, provides control instruction and information flow；
The laser communication terminal includes at least two Space laser communications terminals and multiple satellite-ground laser communication terminals；
At least two Space laser communications terminal is used to carry out laser two-way communication with other satellites；
The multiple satellite-ground laser communication terminal with the earth station of corresponding number and/or aircraft for carrying out two-way laser simultaneously
Communication；
Wherein, the subtended angle over the ground of satellite where each satellite-ground laser communication terminal can scan it.
2. the onboard system of laser beam communications satellite as described in claim 1, which is characterized in that satellite subtended angle over the ground it is big
Small is cone angle A, and the scanning range of the satellite-ground laser communication terminal is cone angle B, wherein B >=A.
3. the onboard system of laser beam communications satellite as claimed in claim 2, which is characterized in that the multiple satellite-ground laser communication
The size of the scanning range of terminal is identical or different.
4. the onboard system of laser beam communications satellite according to claim 2, which is characterized in that the multiple star laser it is logical
Letter terminal arbitrary arrangement in the satellite where it.
5. the onboard system of laser beam communications satellite according to claim 2, which is characterized in that the multiple star laser it is logical
Believe that terminal arranges in the satellite where it according to scheduled communication array.
6. the onboard system of laser beam communications satellite as claimed in claim 5, which is characterized in that the scheduled communication array is
The matrix shape of n × n arranges, and n is the natural number more than 2；
Alternatively, the scheduled communication array is circular array, square array or diamond shape array.
7. the onboard system of laser beam communications satellite as claimed in claim 5, which is characterized in that
The multiple satellite-ground laser communication terminal is spacedly distributed or unequal interval distribution.
8. the onboard system of the laser beam communications satellite as described in any one of claim 1-7, which is characterized in that the multiple star
Ground laser communication terminal is installed on the mounting surface on satellite.
9. the onboard system of laser beam communications satellite as claimed in claim 6, which is characterized in that the mounting surface is a flat surface.
10. the onboard system of laser beam communications satellite as claimed in claim 9, which is characterized in that the Space laser communications are whole
Hold for in the same orbital plane of the satellite satellite carry out laser communication connect, and/or for defending in other orbital planes
Star carries out laser communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810362859.5A CN108540208A (en) | 2018-04-20 | 2018-04-20 | A kind of onboard system of laser beam communications satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810362859.5A CN108540208A (en) | 2018-04-20 | 2018-04-20 | A kind of onboard system of laser beam communications satellite |
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| CN108540208A true CN108540208A (en) | 2018-09-14 |
Family
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| CN201810362859.5A Pending CN108540208A (en) | 2018-04-20 | 2018-04-20 | A kind of onboard system of laser beam communications satellite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113572529A (en) * | 2021-06-18 | 2021-10-29 | 北京极光星通科技有限公司 | Satellite-borne laser communication terminal software reconstruction method and system |
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| CN1825787A (en) * | 2006-04-03 | 2006-08-30 | 哈尔滨工业大学 | Method for establishing laser link between low orbit safellite and ground station |
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