CN208209953U - A kind of terminal layout structure of laser beam communications satellite - Google Patents
A kind of terminal layout structure of laser beam communications satellite Download PDFInfo
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- CN208209953U CN208209953U CN201820572514.8U CN201820572514U CN208209953U CN 208209953 U CN208209953 U CN 208209953U CN 201820572514 U CN201820572514 U CN 201820572514U CN 208209953 U CN208209953 U CN 208209953U
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Abstract
The utility model discloses a kind of terminal layout structure of laser beam communications satellite, it is related to technical field of laser communication, main purpose is to realize under lower cost that one satellite of synchronization provides service for multiple laser communication terminals.A kind of terminal layout structure of laser beam communications satellite of main technical schemes, including multiple spaced laser communication terminals, the laser communication terminal can be around axial scan a certain range, and multiple laser communication terminals are installed on satellite, the multiple laser communication terminal is arranged on mounting surface according to scheduled communication array, the mounting surface is a spherical convex surface or spherical concave surface, the mounting surface has a centre of sphere, and the interval angles in the multiple laser communication terminal between adjacent terminal relative to the centre of sphere are identical.The utility model is mainly used for the laser communication of aircraft.
Description
Technical field
The utility model relates to a kind of technical field of laser communication, more particularly to a kind of spaceborne system of laser beam communications satellite
System.
Background technique
It is realized currently, air communications mainly passes through 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 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 magnitude) real-time Transmission.
Therefore, also occur some communication systems that satellite and earth station's communication are carried out using laser communication link now
System, laser space communication has a clear superiority, such as high data rate, large capacity and high confidentiality.But laser
Beam divergence angle is relatively narrow, and a general laser beam other laser communication terminals can only be communicated with one；Current one is defended
It is typically provided with a laser communication terminal in star, cannot achieve a satellite while being multiple laser communication terminal services,
Realization synchronization is multiple laser communication terminal services, can only be realized by way of emitting multi-satellite at present, this kind of side
Formula cost is too high, so that a possibility that realizing is smaller.
Utility model content
The utility model provides the layout structure of the laser communication terminal in a kind of onboard system of laser beam communications satellite, main
Syllabus is to realize under lower cost that one satellite of synchronization for multiple laser communication terminals provides service.
Technical solution adopted by the utility model to solve the above technical problems is as follows:
A kind of terminal layout structure of laser beam communications satellite,
Including multiple spaced laser communication terminals, the laser communication terminal can be around the certain model of axial scan
It encloses, and multiple laser communication terminals are installed on satellite, it is characterised in that:
The multiple laser communication terminal is arranged on mounting surface according to scheduled communication array, and the mounting surface is a ball
Shape convex surface or spherical concave surface, the mounting surface have a centre of sphere, in the multiple laser communication terminal between adjacent terminal
Interval angles relative to the centre of sphere are identical.
Further, for the ease of installing and configuring, the axial direction of the scanning range of the laser communication terminal is installed for it
Radial direction at position.
Further, the scanning range size of the multiple laser communication terminal is same or different.
Further, the scanning as an alternative embodiment of the utility model, between adjacent laser communication terminal
Range is overlapped.
Further, the scanning range of the multiple laser communication terminal is cone angle B, between adjacent laser communication terminal
Scanning range overlapping angle be B/2.
Further, the scanning as another alternative embodiment of the utility model, between adjacent laser communication terminal
Range is mutually spliced.
Further, in order to mitigate the weight of laser communication terminal, the scanning range of the multiple laser communication terminal
Size is cone angle B, and the subtended angle over the ground for the satellite that the multiple laser communication terminal is installed is A, B < A.
Further, the scheduled communication array is matrix arrangement.
Further, the multiple laser communication terminal collectively forms a scanning range, and scanning range covering is multiple to swash
Subtended angle of the satellite that optical communication terminal is installed to ground.
Further, the mounting surface is located at the side of satellite over the ground, and the multiple laser communication terminal can be with
Aircraft and ground below satellite carry out two-way laser communication.
Compared with prior art, layout structure of the utility model for the laser communication terminal of laser beam communications satellite, can
It is communicated between satellite, aircraft and earth station using laser communication link with realizing, instead of conventionally by microwave
It realizes the communication between satellite and aircraft, has evaded the problem of radio-frequency spectrum control.In addition, since laser communication has transmission
Rate fast (more than 1Gbps), with roomy, information capacity is big, is conducive to solve aircraft, especially airline carriers of passengers mass data transmission
Requirement.And the onboard system is provided with multiple satellite-ground laser communication terminals, and the multiple satellite-ground laser communication terminal is common
The scanning range of formation covers the subtended angle over the ground of satellite where it, and multiple satellite-ground laser communication terminal can simultaneously and corresponding number
The satellite-ground laser communication terminal that two-way laser communication is carried out with earth station, aircraft, enable a satellite synchronization
It is serviced for multiple laser communication terminals, greatly reduces the cost of serving of laser communication terminal.
Detailed description of the invention
Fig. 1 is the schematic diagram of the onboard system of the laser communication system satellite of the utility model embodiment；
Fig. 2 is the schematic diagram of the satellite subtended angle over the ground of the utility model embodiment；
Fig. 3 is that the scheduled communication array of multiple satellite-ground laser communication terminals of the utility model embodiment arranges schematic diagram；
Fig. 4 is the multiple satellite-ground laser communication terminal arrangement schematic diagrames of another kind of the utility model embodiment；
Fig. 5 is the schematic diagram of multiple another angles of satellite-ground laser communication terminal arrangement of Fig. 4；
Fig. 6 is the multiple satellite-ground laser communication terminal arrangement schematic diagrames of another kind of the utility model embodiment.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
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 to the power supply of laser communication terminal, offer 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 located between the passing of satelline star in same orbital plane
Laser communication terminal is in turn connected to form a satellite communication network, or the passing of satelline star being also possible 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.The scanning range of each satellite-ground laser communication terminal is less than satellite
Subtended angle over the ground, the scanning range that the multiple satellite-ground laser communication terminal is collectively formed covers opening over the ground for satellite where it
Angle.
Therefore, it is based on foregoing description, the passing of satelline Space laser communications terminal in the above-mentioned same orbital plane successively connects
It connects after forming a satellite communication network, as long as on the satellite-ground laser communication terminal on one of satellite and earth station system
Laser communication terminal is in communication with each other, and the satellite in entire orbital plane and the two-way communication of earth station can be realized.And the track
All satellites on face can be communicated by satellite-ground laser communication terminal with the laser communication terminal in aircraft, be used for
Network service is provided to the aircraft for being equipped with aircraft, and is passed under network for passing through itself mass data of aircraft
To earth station.
In the utility model embodiment, for the onboard system of laser beam communications satellite, may be implemented satellite, aircraft with
And communicated between earth station using laser communication link, it is logical between satellite and aircraft instead of being realized conventionally by microwave
Letter, has evaded the problem of radio-frequency spectrum control.In addition, since laser communication has transmission rate fast (more than 1Gbps), bandwidth
Greatly, information capacity is big, is conducive to solve aircraft, the especially requirement of airline carriers of passengers mass data transmission.And the onboard system
Provided with multiple satellite-ground laser communication terminals, the scanning range that the multiple satellite-ground laser communication terminal is collectively formed covers its institute
In the subtended angle over the ground of satellite, multiple satellite-ground laser communication terminal can be carried out with corresponding number with earth station, aircraft simultaneously
The satellite-ground laser communication terminal of two-way laser communication enables a satellite synchronization for the progress of multiple laser communication terminals
Service, greatly reduces the cost of serving of laser communication terminal.
Number of satellites in extraterrestrial satellite orbit is m, which surrounds a circumterrestrial circle, and covers
Cover the range of this circle of the earth.As shown in Fig. 2, radius where the extraterrestrial satellite orbit face is r, and satellite distance
The distance of the earth is h, and h can be 1000km-5000km, and the number of satellite is m, and subtended angle size is cone angle to each satellite over the ground
A, subtended angle is using satellite and earth center as a symmetrical cone angle in axle center to the satellite over the ground.In order to make in each orbital plane
The number of satellites of setting is minimum, i.e., the subtended angle over the ground of each satellite is maximum, the satellite outermost of subtended angle and earth surface phase over the ground
It cuts, i.e. the A=2arccos (r/r+h).Such as when the distance of the orbital distance earth of the satellite is 1000km, then the satellite
Subtended angle size to earth station is 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, then realize the bracket of angle scanning volume and
Weight is also all bigger.Due to satellite launch cost with satellite weight increase exponentially grade increase, therefore each star communicate
The increase of the weight of terminal has also resulted in the increase of satellite launch cost.As such, it can be that multiple satellite-ground laser communication terminals
The range that can be scanned is both less than the subtended angle over the ground of satellite, and then the scanning range of adjacent satellite-ground laser communication terminal being capable of phase
It is mutually spliced to form the scanning range of an entirety, which needs the subtended angle over the ground more than or equal to the satellite, i.e., comprising being somebody's turn to do
The subtended angle over the ground of satellite.And in order to which multiple laser communication terminals can be communicated simultaneously in the subtended angle over the ground of satellite, then one
Multiple laser communication terminals are provided in fixed coverage area to be scanned.
Therefore, in order to reduce the cost and at the same time guaranteeing the aircraft etc. for being loaded with laser communication terminal of satellite communications services
The number of mobile subscriber, the utility model embodiment provide a kind of arrangement mode of multiple satellite-ground laser communication terminals, such as scheme
Shown in 3, the multiple satellite-ground laser communication terminal is arranged in scheduled communication array, and adjacent satellite-ground laser communication terminal
Between scanning range it is overlapped.Wherein, the matrix shape that the scheduled communication array is n × n arranges, and n is greater than 2
Natural number, and multiple satellite-ground laser communication terminal is set on mounting surface, which is a flat surface.And each star
Setting is spaced between ground laser communication terminal, the scanning range size of each satellite-ground laser communication terminal is cone angle B, cone angle B
As using the line of the satellite and earth center as a cone angle of axis, B < A, and the scanning of adjacent satellite-ground laser communication terminal
Range is overlapped, and the scanning range size being overlapped between the multiple satellite-ground laser communication terminal is same or different, specifically
The utility model embodiment this is not limited.And those skilled in the art can also understand that, the scheduled communication
Array is also possible to other arrangement modes, and the interval between multiple satellite-ground laser communication terminals can be the same or different, can
Be assume diamond in shape, the arrangement of round, rectangular or other arrays.
For example, as shown in figure 3, it is adjacent it is equidistant between each satellite-ground laser communication terminal between be overlapped B/2 angle, example
Be located at the satellite-ground laser communication terminal of each centre in such as figure, around there are four other equidistant satellite-ground laser communication terminals
Scanning range half Chong Die with its scanning range, and the farther away laser communication terminal of four additional and intermediate star laser it is logical
Scanning range between letter terminal is overlapped, but not necessarily overlapping 1/2.I.e. in the range of every B angle, share
9 satellite-ground laser communication terminals can cover the range, i.e., in B angle, which can be used to service simultaneously 9 ends
End.If the array of satellite-ground laser communication terminal is n × n, n is natural number 7, then satellite-ground laser communication terminal all on the satellite
The angle of the range collectively covered should be B × (1+n)/2, which should be equal to A, or be greater than A.Certainly in all stars
When the range that ground laser communication terminal is collectively covered is identical to the subtended angle of earth station as the satellite, the best of resource is just formed
Rationally utilize.
Certain those skilled in the art can also understand that by above-mentioned principle, and laser is logical adjacent star also can be set
The angle of the range not of uniform size for being set to half, that is, being overlapped of scanning range overlapping between letter terminal needs not be equal to B/2, this
For sample i.e. in the range of every B angle, the change for the laser communication terminal number that satellite can communicate simultaneously is more or becomes smaller.Or phase
Adjacent star overlapping range between laser head communication terminal can be all identical, can also part it is identical, can also be entirely different,
As long as the cone angle over the ground that the angle summation that all satellite-ground laser communication terminals can scan is covered for the satellite.
As one embodiment of the utility model, as shown in figure 3, the cone angle for the preset range that satellite is covered is 120
It spends, the satellite-ground laser communication terminal array on the satellite is 7 × 7, and the range that each satellite-ground laser communication terminal can scan
Cone angle is 30 degree, and the angle of overlapping range is 15 degree, therefore, the entirety that multiple satellite-ground laser communication terminal can scan
Range is 120 degree.Therefore, in the range of each 30 degree, the range can be scanned by sharing 9 satellite-ground laser communication terminals,
In the range of 30 degree of angles i.e. in the satellite coverage, which can be loaded with laser communication terminal with 9 simultaneously
The mobile subscribers such as aircraft carry out laser communication.And those skilled in the art are from above-mentioned principle it is also to be understood that this is every
The scanning angle of a satellite-ground laser communication terminal can also be greater than 30 degree, or less than 30 degree.
For example, the cone angle for the preset range that satellite is covered is 120 degree, the scanning angle of each satellite-ground laser communication terminal
It is 40 degree, and the scanning range of adjacent laser communication terminal is laminated in 20 degree, then with only needing to arrange 5 × 5 stars laser
120 degree of preset range of scanning of satellite can be realized in communication terminal.And in the range of 40 degree of sizes, it may be implemented 9 and swash
It is communicated while optical communication terminal.
For the scanning angle for keeping satellite-ground laser communication terminal array shape integral, as shown in Figure 4,5, for the star swash
Another predetermined communication array arrangement mode of optical communication terminal, the satellite-ground laser communication terminal array are set on a mounting surface 3, should
Mounting surface 3 is a spherical convex surface, which has a centre of sphere, relative to the centre of sphere between adjacent satellite-ground laser communication terminal
Interval angle it is identical.And the axial direction of the scanning angle of each satellite-ground laser communication terminal is its installation on mounting surface
Radial direction at position guarantees the model that the range scanned between adjacent satellite-ground laser communication terminal also has overlapping and is overlapped in this way
It encloses identical.Those skilled in the art can also understand that, which may be with spherical concave surface.
Also, those skilled in the art can also understand that, the scanning range between adjacent satellite-ground laser communication terminal
It can not also be overlapped, as long as having multiple satellite-ground laser communication terminal alignments to be scanned in same range also may be implemented at this
Multiple terminals in range communicate simultaneously, cone angle B < A of the scanning range of satellite-ground laser communication terminal, if the star laser it is logical
The scanning range of letter terminal is spliced to form the predetermined scanning range of the satellite jointly.Multiple satellite-ground laser communication terminal
Scanning range can be the same or different.
Such setting enables satellite to provide most and most effective laser communication clothes in the range of its covering
Business, and the satellite-ground laser communication terminal being arranged on satellite will not excessively in turn result in increase and the launch cost of satellite weight
Increase, can effectively control cost and improve efficiency of service and requirement.
In order to reduce the cost and at the same time guaranteeing that aircraft for being loaded with laser communication terminal of satellite communications services etc. is mobile
The number of user, the utility model embodiment provides a kind of arrangement mode of multiple satellite-ground laser communication terminals, such as Fig. 6 institute
To show, the multiple satellite-ground laser communication terminal is arranged in scheduled communication array, and adjacent satellite-ground laser communication terminal
Scanning range is mutually spliced.Satellite where the scanning range that the satellite-ground laser communication terminal of predetermined quantity is mutually spliced covers it
Subtended angle over the ground.The description as described in mutually splicing, can be with reference to the description of overlapping embodiment, the difference is that each satellite-ground laser communication
Arrangement interval between terminal becomes larger, so that the scanning angle of two adjacent satellite-ground laser communication terminals is not overlapped.Specifically,
The utility model embodiment will not be described in great detail herein.
In addition, the multiple satellite-ground laser communication terminal mutually spliced also can be set in the spherical convex surface for being set to satellite
On, the angle being spaced between adjacent satellite-ground laser communication terminal on the mounting surface is identical, and each satellite-ground laser communication
The axial direction of the cone angle of the scanning range of terminal is the radial direction of its installed position on mounting surface.
The utility model embodiment may be implemented between satellite, aircraft and earth station using laser communication link into
Row communication has evaded the problem of radio-frequency spectrum control instead of the communication realized between satellite and aircraft conventionally by microwave.
In addition, information capacity is big since laser communication has transmission rate fast (more than 1Gbps), with roomy, it is conducive to solution aircraft,
The especially requirement of airline carriers of passengers mass data transmission.And the onboard system is provided with multiple satellite-ground laser communication terminals, institute
The subtended angle over the ground for stating satellite where the scanning range that multiple satellite-ground laser communication terminals are collectively formed covers it, swashs to multiple star
Optical communication terminal can be whole with the satellite-ground laser communication for carrying out two-way laser communication with earth station, aircraft of corresponding number simultaneously
End enables a satellite synchronization to be that multiple laser communication terminals are serviced, greatly reduces laser communication terminal
Cost of serving.
Although the preferred embodiments of the utility model have been described above in detail, it is to be clearly understood that for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of terminal layout structure of laser beam communications satellite,
Including multiple spaced laser communication terminals, the laser communication terminal can around axial scan a certain range, and
And multiple laser communication terminals are installed on satellite, it is characterised in that:
The multiple laser communication terminal is arranged on mounting surface according to scheduled communication array, and the mounting surface is spherical convex surface
Or spherical concave surface, the mounting surface have a centre of sphere, in the multiple laser communication terminal between adjacent terminal relative to
The interval angles of the centre of sphere are identical.
2. the terminal layout structure of laser beam communications satellite as described in claim 1, it is characterised in that: the laser communication terminal
Scanning range axial direction be its installed position radial direction.
3. the terminal layout structure of laser beam communications satellite as claimed in claim 2, it is characterised in that: the multiple laser communication
The scanning range size of terminal is same or different.
4. the terminal layout structure of laser beam communications satellite as claimed in claim 3, it is characterised in that: adjacent laser communication is whole
Scanning range between end is overlapped.
5. the terminal layout structure of laser beam communications satellite as claimed in claim 4, it is characterised in that: the multiple laser communication
The scanning range of terminal is cone angle B, and the angle of the scanning range overlapping between adjacent laser communication terminal is B/2.
6. the terminal layout structure of laser beam communications satellite as claimed in claim 3, it is characterised in that: adjacent laser communication is whole
Scanning range between end is mutually spliced.
7. such as the terminal layout structure of laser beam communications satellite of any of claims 1-6, it is characterised in that: described more
The size of the scanning range of a laser communication terminal is cone angle B, and the satellite that the multiple laser communication terminal is installed is over the ground
Subtended angle is A, B < A.
8. such as the terminal layout structure of laser beam communications satellite of any of claims 1-6, it is characterised in that: described pre-
Fixed communication array is matrix arrangement.
9. such as the terminal layout structure of laser beam communications satellite of any of claims 1-6, it is characterised in that: described more
A laser communication terminal collectively forms a scanning range, which covers the satellite pair that multiple laser communication terminals are installed
The subtended angle on ground.
10. such as the terminal layout structure of laser beam communications satellite of any of claims 1-6, it is characterised in that: described
Mounting surface is located at the side of satellite over the ground, and the multiple laser communication terminal can be with the aircraft and ground below satellite
Face carries out two-way laser communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820572514.8U CN208209953U (en) | 2018-04-20 | 2018-04-20 | A kind of terminal layout structure of laser beam communications satellite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820572514.8U CN208209953U (en) | 2018-04-20 | 2018-04-20 | A kind of terminal layout structure of laser beam communications satellite |
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| CN208209953U true CN208209953U (en) | 2018-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390715A (en) * | 2018-04-20 | 2018-08-10 | 宁波光舟通信技术有限公司 | A kind of terminal layout structure of laser beam communications satellite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390715A (en) * | 2018-04-20 | 2018-08-10 | 宁波光舟通信技术有限公司 | A kind of terminal layout structure of laser beam communications satellite |
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Granted publication date: 20181207 |