CN106448420A - Communication target capturing experiment demonstration system and communication target capturing method - Google Patents
Communication target capturing experiment demonstration system and communication target capturing method Download PDFInfo
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- CN106448420A CN106448420A CN201611166342.6A CN201611166342A CN106448420A CN 106448420 A CN106448420 A CN 106448420A CN 201611166342 A CN201611166342 A CN 201611166342A CN 106448420 A CN106448420 A CN 106448420A
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- G—PHYSICS
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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Abstract
The invention relates to the field of communication, in particular to a communication target capturing experiment demonstration system and a communication target capturing method. The system comprises a curtain wall, a receiving end and a plurality of emitting ends, wherein each emitting end comprises a sequence generator and a modulated laser; the receiving end comprises a parallel light pipe, a charge couple device image sensor and a first control box; the sequence generator performs modulation on a beacon light signal to be sent to obtain a modulation beacon light signal; the modulated laser sends the modulation beacon light signal to the curtain wall; the curtain wall reflects the modulation beacon light signal and the interference signal to the parallel light pipe; the parallel light pipe performs amplification processing on the received modulation beacon light signal and the interference signal and then sends the signals to the charge couple device image sensor; the charge couple device image sensor converts the modulation beacon light signal and the interference signal into an image signal and then sends the image signal to the first control box; the first control box performs demodulation operation on the image signal to obtain a demodulation sequence; further, the communication target is determined; the safety communication is realized.
Description
Technical field
The present invention relates to communication technical field, capture experimental demonstration system in particular to a kind of communication target and lead to
Letter target acquistion method.
Background technology
Relative maturity with Fibre Optical Communication Technology and the breakthrough of wireless laser communication key technology, in the face of growing
High security and high capacity communication demand, the link of the wireless light communication under subaerial complex background realizes and miniaturization, light
Quantify and low-power consumption prototyping has become domestic and international research boom.In radio telecommunicaltion system, communication terminal is typically adopted
Detect other side's beacon beam light beam with CCD or cmos sensor as detector.But due to receiving and transmitting terminalses apart from apart from each other and
The atmospheric channel interference existing, leads to the redistribution of beacon hot spot signal intensity and decays serious, ultimately cause CCD/CMOS and visit
Survey device focal plane on imaging facula show as micro-target, be generally only several to dozens of pixel size.In nothing near the ground
In line laser communication, especially Air-Ground, communicate between ground-ground, the ground environment residing for communication terminal and background are complicated, to micro-
The detection of target and capture impact are serious, easily cause target acquisition false-alarm (judging communication target by accident), ultimately result in target acquistion
Failure.It is mainly shown as：1., when target luminance is similar to background luminance, detector cannot judge one-tenth in visual field for the target
As hot spot, and then cannot effectively detect target.(a such as real goal, other when 2. there is jamming target in detector field of view
(other targets are to current for the multiple communication target existing when pseudo- target (pseudo- target can be discharged by enemy) or wireless light communication networking
Communication target there is interference)), particularly imaging facula brightness in detector field of view of communication target and jamming target, big
Little and when being shaped like, easily cause communication target to detect false-alarm, lead to communication link to be set up unsuccessfully the most at last；It could even be possible to
Communicated (if decoy is the camouflaged target of wartime enemy) with decoy, causes security information to reveal.
Content of the invention
It is an object of the invention to provide a kind of communication target captures experimental demonstration system, the beacon sending by transmitting terminal
Optical signal is modulated so that the beacon optical signal of receiving terminal this communication of unique identification, thus realizing transmitting terminal and receiving terminal
Secure communication.
Another object of the present invention is to providing a kind of communication target catching method, believed by the beacon beam that transmitting terminal sends
Number it is modulated so that the beacon optical signal of receiving terminal this communication of unique identification, thus realizing the safety of transmitting terminal and receiving terminal
Communication.
To achieve these goals, the technical scheme that the embodiment of the present invention adopts is as follows：
In a first aspect, embodiments providing a kind of communication target capture experimental demonstration system, it is applied to multiple
Penetrate end, receiving terminal and curtain wall, multiple described transmitting terminals and described receiving terminal all communicate to connect, and multiple described transmitting terminals are used for launching
Beacon optical signal, described receiving terminal is used for receiving described beacon optical signal, and each described transmitting terminal includes sequencer and can
Modulation laser instrument, described sequencer and described modulated laser instrument connect, and described receiving terminal includes collimator, electric charge Rhizoma Nelumbinis
Close device image sensor and the first control chamber, described collimator, Charge Coupled Device (CCD) imageing sensor and the first control chamber
Connect；
Described sequencer is treated the beacon optical signal sending and is modulated obtaining modulation letter according to default modulation sequence
Mark optical signal, and described modulation beacon optical signal is sent to described modulated laser instrument, described default modulation sequence pre-stored
In described sequencer；
Described modulated laser instrument sends described modulation beacon optical signal to described curtain wall, after the reflection of described curtain wall by
Described collimator receives；Described curtain wall provides multiple interference signals simultaneously, and described interference signal reflects by institute through described curtain wall
State collimator to receive；
Described collimator is amplified to the described modulation beacon optical signal receiving and described interference signal processing, and
Described modulation beacon optical signal after processing and described interference signal are sent to described Charge Coupled Device (CCD) imageing sensor；
Described Charge Coupled Device (CCD) imageing sensor by process after described modulation beacon optical signal and described interference signal
Be converted to picture signal to send to described first control chamber；
Described first control chamber is demodulated operation to the picture signal receiving according to default rule and obtains solving sequencing
Row；
Described demodulated sequence is compared by described first control chamber with described default modulation sequence, when described demodulated sequence
When consistent with described default modulation sequence, described modulation beacon optical signal or interference signal are communication target, described transmitting terminal and
Described receiving terminal sets up communication.
Second aspect, the embodiment of the present invention additionally provides a kind of communication target catching method, is applied to communication target capture
Experimental demonstration system, described communication target capture experimental demonstration system includes transmitting terminal and receiving terminal, and methods described includes：
Described transmitting terminal is treated the beacon optical signal sending and is modulated obtaining modulating beacon beam according to default modulation sequence
Signal, and described modulation beacon optical signal is sent to described receiving terminal, described default modulation sequence prestores and is stored in described transmitting
End；
Described receiving terminal is converted to picture signal after the described modulation beacon optical signal receiving being amplified process；
Described receiving terminal is additionally operable to be demodulated operation to described image signal according to default rule obtain demodulated sequence,
When described demodulated sequence is consistent with described default modulation sequence, described modulation beacon optical signal is communication target, described transmitting
End is set up with described receiving terminal and is communicated.
A kind of communication target capture experimental demonstration system provided in an embodiment of the present invention and communication target catching method, this leads to
Letter target acquistion experimental demonstration system include curtain wall, receiving terminal and multiple transmitting terminal, each transmitting terminal include sequencer and
Modulated laser instrument, receiving terminal includes collimator, Charge Coupled Device (CCD) imageing sensor and the first control chamber.Sequencer
Treat the beacon optical signal sending to be modulated obtaining modulating beacon optical signal, modulated laser instrument according to default modulation sequence
Beacon optical signal will be modulated send to curtain wall, described modulation beacon optical signal sends to collimator after curtain wall reflection, simultaneously
Curtain wall provides multiple interference signals, and described interference signal sends to described collimator after curtain wall reflection, and collimator docks
The modulation beacon optical signal receiving and interference signal send to Charge Coupled Device (CCD) imageing sensor, electric charge after being amplified processing
Modulation beacon optical signal and interference signal are converted to and send after picture signal to the first control chamber by coupled device imageing sensor,
First control chamber is demodulated operation to picture signal and obtains demodulated sequence, when this demodulated sequence is consistent with default modulation sequence
When, this modulation beacon optical signal or interference signal are communication target, and transmitting terminal and receiving terminal set up communication.By to by multiple
The beacon optical signal that transmitting terminal sends is modulated so that the beacon optical signal of receiving terminal this communication of unique identification, thus realizing
Transmitting terminal and the secure communication of receiving terminal.
For enabling the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to use required in embodiment
Figure is briefly described it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows that a kind of communication target provided in an embodiment of the present invention captures the structural representation of experimental demonstration system.
Fig. 2 shows that a kind of communication target provided in an embodiment of the present invention captures the receiving terminal reception of experimental demonstration system
Picture signal schematic diagram.
Fig. 3 shows that a kind of communication target provided in an embodiment of the present invention captures the first control chamber of experimental demonstration system
Block diagram.
Fig. 4 shows that a kind of communication target provided in an embodiment of the present invention captures the first control chamber of experimental demonstration system
Scan module scanogram.
The flow chart that Fig. 5 shows a kind of communication target catching method provided in an embodiment of the present invention.
Diagram：10- communication target captures experimental demonstration system；110- transmitting terminal；120- receiving terminal；The modulated laser of 111-
Device；115- sequencer；112nd, 122- dimensional turntable；113- first support shaft；114- second control chamber；121-CCD senses
Device；125- collimator；123- second support shaft；124- first control chamber；126- scan module；127- judge module；130-
Curtain wall.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Generally exist
The assembly of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged with various different configurations and design herein.Cause
This, be not intended to limit claimed invention to the detailed description of the embodiments of the invention providing in the accompanying drawings below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment being obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then do not need it to be defined further and explains in subsequent accompanying drawing.Meanwhile, the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or hint relative importance.
Refer to Fig. 1, be that the structure that a kind of communication target provided in an embodiment of the present invention captures experimental demonstration system 10 is shown
It is intended to.
The embodiment of the present invention provides a kind of communication target to capture experimental demonstration system 10, and communication target captures experimental demonstration system
System 10 is applied to receiving terminal 120, curtain wall 130 and multiple transmitting terminal 110, and multiple transmitting terminals 110 and receiving terminal 120 communicate to connect,
Multiple transmitting terminals 110 are used for launching beacon optical signal, and receiving terminal 120 is used for receiving the beacon beam letter of multiple transmitting terminal 110 transmittings
Number.
Each transmitting terminal 110 includes the second control chamber 114, the first support shaft 113, dimensional turntable 112, sequencer
115 and modulated laser instrument 111.One end of first support shaft 113 is connected with the second control chamber 114, the first support shaft 113 another
One end is connected with dimensional turntable 112, and dimensional turntable 112 can rotate with respect to the first support shaft 113, in the present embodiment, two dimension
Turntable 112 substantially becomes cylindric, but not limited to this, dimensional turntable 112 can also be other suitable shapes, such as rectangular-shaped.
Sequencer 115 and modulated laser instrument 111 may be contained within dimensional turntable 112.Second control chamber 114 controls dimensional turntable
112 do low frequency ground sinusoidal motion, and motor (not shown) carries out sinusoidal motion for dimensional turntable 112 provides power.With
The sinusoidal motion of dimensional turntable 112, the modulation beacon beam that the modulated laser instrument 111 being arranged in dimensional turntable 112 sends
Signal also does the sinusoidal motion of low frequency.
Sequencer 115 is modulated being adjusted for treating, according to default modulation sequence, the beacon optical signal sending
Beacon optical signal processed.Described default modulation sequence is made up of 16 binary codings, and first 8 for frame head and front 8 frame heads are equal
For 1, latter 8 modulation sequences being to have recognition reaction, that is, latter 8 of each beacon optical signal modulation sequence be different
Binary code sequence, such as modulation sequence can be 11,111,111 01010101.Different by rear 8 digit separators of modulation sequence
Beacon optical signal so that beacon optical signal has uniqueness, preferably ensure that communication security.Sequencer 115 is to letter
Mark optical signal is modulated, specifically, when being encoded to 1, beacon beam signal output intensity is stronger, the beacon beam when being encoded to 0
Signal output intensity is weaker, thus the output intensity of mouse beacon optical signal changes according to default modulation sequence, and then to letter
Mark optical signal unique mark.In the present embodiment, sequencer 115 adopts Tyke AFG3000C random waveform/function signal
Generator, but not limited to this, the equipment that sequencer 115 can also be modulated to beacon optical signal for other.
Modulated laser instrument 111 is connected with sequencer 115, and sequencer 115 treats the beacon optical signal sending
After modulation obtains modulating beacon optical signal, described modulation beacon optical signal is sent to modulated laser instrument 111.Modulated laser
Device 111 sends the modulation receiving beacon optical signal to curtain wall 130, after curtain wall 130 reflection, described modulation beacon beam letter
Number received by receiving terminal 120.Meanwhile, curtain wall 130 provides multiple interference signals, is such as carried out by Single-chip Controlling red LED lamp
Flicker, the light irradiation that red LED lamp sends, on curtain wall 130, is received by receiving terminal 120 through the reflection of curtain wall 130, but does not limit
In this, curtain wall 130 can also provide interference signal by other means.It is for analog transmissions that curtain wall 130 provides interference signal
, in practical application scene, the multiple interference being likely to occur in scene are so that this communication target captures for end 110 and receiving terminal 120
, closer to practical application scene, conclusion is more true and reliable for experimental demonstration system 10.
Receiving terminal 120 receives modulation beacon optical signal and the interference signal of curtain wall 130 reflection, specially：
Receiving terminal 120 includes ccd sensor (Charge Coupled Device, Charge Coupled Device (CCD) imageing sensor)
121st, dimensional turntable 122, the second support shaft 123, the first control chamber 124 and collimator 125.One end of second support shaft 123
It is connected with the first control chamber 124, the other end of the second support shaft 123 is connected with dimensional turntable 122, dimensional turntable 122 can be relatively
Second support shaft 123 rotates.Ccd sensor 121 and collimator 125 are arranged in dimensional turntable 122.First control chamber
124 also control the second support shaft 123 to do sinusoidal motion, so that receiving terminal 120 can more preferably be received can preferably receive described tune
Beacon optical signal processed and interference signal.
Collimator 125 receives described modulation beacon optical signal and interference signal, and will modulate beacon optical signal and interference
Signal is amplified.
Ccd sensor 121 is connected with collimator 125, and collimator 125 is by the modulation beacon beam after processing and amplifying
Signal and interference signal send to ccd sensor 121, and the modulation receiving beacon optical signal and interference are believed by ccd sensor 121
Number be converted to picture signal, and this picture signal is sent to the first control chamber 124.As shown in Fig. 2 being the one of present invention offer
Plant communication target and capture the picture signal schematic diagram that the receiving terminal 120 of experimental demonstration system 10 receives.In figure is generally circular
Figure represent communication target, that is, transmitting terminal 110 sends to the modulation beacon optical signal of receiving terminal 120, in figure substantially be in ellipse
The figure of shape represents the beacon optical signal or interference signal that other transmitting terminals 110 send.
First control chamber 124 receives this picture signal, and according to default rule, picture signal is demodulated operating
To demodulated sequence.When described default rule is that picture signal is stronger, when that is, picture signal is more than default threshold value, it is encoded to 1；
When picture signal is weaker, when that is, picture signal is less than default threshold value, it is encoded to 0, thus becoming by the intensity of picture signal
Change the demodulated sequence obtaining being made up of 1 and 0, described default threshold value sets according to actual needs.First control chamber 124 is additionally operable to
Demodulated sequence is compared with default modulation sequence, when demodulated sequence is consistent with default modulation sequence, such as by solution
The demodulated sequence that obtains is adjusted to be 11,111,111 01010101, this demodulated sequence and default modulation sequence 11111111
01010101 is consistent, and this modulation beacon optical signal is sent to the communication target of receiving terminal 120 for transmitting terminal 110, thus transmitting terminal
110 are communicated with receiving terminal 120 foundation.When demodulated sequence is inconsistent with default modulation sequence, this modulation beacon optical signal is not
It is the communication target that transmitting terminal 110 is sent to receiving terminal 120, transmitting terminal 110 does not enable to communicate with receiving terminal 120.
Before the first control chamber 124 is demodulated to picture signal, the first control chamber 124 also will be carried out to picture signal
Process.As shown in figure 3, being the first control chamber that a kind of communication target provided in an embodiment of the present invention captures experimental demonstration system 10
124 structural representation.
First control chamber 124 also includes scan module 126 and judge module 127.Scan module 126 is used for picture signal
It is scanned, judge module 127 is used for analysis in scan module 126 scanning process and determines target beacon optical signal, this target
Beacon beam signal includes transmitting terminal 110 and sends the letter launched to the modulation beacon optical signal of receiving terminal 120, other transmitting terminals 110
Mark optical signal and interference signal.And then first control chamber 124 to one or more target beacon optical signals respectively be demodulated grasp
Make.
Scan module 126 is scanned to picture signal, specially：As shown in figure 4, being provided in an embodiment of the present invention one
Plant scan module 126 scanogram that communication target captures the first control chamber 124 of experimental demonstration system 10.Each circle generation
One scanning sub-district of table, multiple described scanning sub-districts are overlapped into square.System scan from the beginning of this coordinate axess centre coordinate, according to
It is scanned according in figure arrow instruction order, the number of plies of scanning determines according to picture signal size.
Refer to Fig. 5, be a kind of flow chart of communication target catching method provided in an embodiment of the present invention.This communication target
Catching method comprises the following steps：
Step S110, each described transmitting terminal is treated the beacon optical signal sending and is modulated according to default modulation sequence
Arrive modulation beacon optical signal, and beacon optical signal will be modulated and send to described receiving terminal, described default modulation sequence prestores and is stored in
Described transmitting terminal.
In the present embodiment, step S110 can be executed respectively by sequencer 115 and modulated laser instrument 111.
Step S120, described receiving terminal is converted to figure after the described modulation beacon optical signal receiving being amplified process
As signal.
In the present embodiment, step S120 can be executed respectively by collimator 125 and ccd sensor 121.
Step S140, described receiving terminal is additionally operable to be demodulated operation to described image signal according to default rule obtain
Demodulated sequence, when described demodulated sequence is consistent with described default modulation sequence, described modulation beacon optical signal is signal of communication,
Described transmitting terminal is set up with described receiving terminal and is communicated.
In the present embodiment, step S140 can be executed by the first control chamber 124.
Before execution step S140, also include：
Step S130, described receiving terminal is scanned to described image signal and analysis determines target letter in scanning process
Mark optical signal, described target beacon optical signal is described modulation beacon optical signal.
In the present embodiment, step S130 can pass through scan module 126 and 127 points of the judge module of the first control chamber 124
Do not execute.
In sum, a kind of communication target capture experimental demonstration system provided in an embodiment of the present invention and communication target capture
Method, this communication target capture experimental demonstration system includes curtain wall, receiving terminal and multiple transmitting terminal, and each transmitting terminal includes sequence
Generator and modulated laser instrument, receiving terminal includes collimator, Charge Coupled Device (CCD) imageing sensor and the first control chamber.Sequence
Row generator is treated the beacon optical signal sending and is modulated obtaining modulating beacon optical signal according to default modulation sequence, adjustable
Laser instrument processed will be modulated beacon optical signal and send to curtain wall, and described modulation beacon optical signal sends to directional light after curtain wall reflection
Pipe, the multiple interference signals of curtain wall offer simultaneously, described interference signal sends to described collimator, directional light after curtain wall reflection
Pipe sends to Charge Coupled Device (CCD) image sensing after the modulation beacon optical signal receiving and interference signal being amplified process
Device, modulation beacon optical signal and interference signal are converted to and send after picture signal to first by Charge Coupled Device (CCD) imageing sensor
Control chamber, the first control chamber is demodulated operation to picture signal and obtains demodulated sequence, when this demodulated sequence and default modulation
When sequence is consistent, this modulation beacon optical signal or interference signal are communication target, and transmitting terminal and receiving terminal set up communication.By right
The beacon optical signal being sent by multiple transmitting terminals is modulated so that the beacon optical signal of receiving terminal this communication of unique identification,
Thus realizing the secure communication of transmitting terminal and receiving terminal.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or deposit between operating
In any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to
Comprising of nonexcludability, wants so that including a series of process of key elements, method, article or equipment and not only including those
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element including in the process of described key element, method, article or equipment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.It should be noted that：Similar label and letter exist
Representing similar terms in figure below, therefore, once being defined in a certain Xiang Yi accompanying drawing, being then not required in subsequent accompanying drawing
It is defined further and to be explained.
Claims (10)
1. a kind of communication target captures experimental demonstration system, is applied to curtain wall, receiving terminal and multiple transmitting terminal, multiple described transmittings
End is all communicated to connect with described receiving terminal, and multiple described transmitting terminals are used for launching beacon optical signal, and described receiving terminal is used for receiving
Described beacon optical signal is it is characterised in that each described transmitting terminal includes sequencer and modulated laser instrument, described sequence
Generator and described modulated laser instrument connect, described receiving terminal include collimator, Charge Coupled Device (CCD) imageing sensor and
First control chamber, described collimator, Charge Coupled Device (CCD) imageing sensor and the first control chamber connect；
Described sequencer is treated the beacon optical signal sending and is modulated obtaining modulating beacon beam according to default modulation sequence
Signal, and described modulation beacon optical signal is sent to described modulated laser instrument, described default modulation sequence prestores and is stored in institute
State sequencer；
Described modulated laser instrument sends described modulation beacon optical signal to described curtain wall, by described after the reflection of described curtain wall
Collimator receives；Described curtain wall provides multiple interference signals simultaneously, and described interference signal reflects by described flat through described curtain wall
Row light pipe receives；
Described collimator is amplified to the described modulation beacon optical signal receiving and described interference signal processing, and will locate
Described modulation beacon optical signal after reason and described interference signal send to described Charge Coupled Device (CCD) imageing sensor；
Described modulation beacon optical signal after processing and described interference signal are changed by described Charge Coupled Device (CCD) imageing sensor
Send to described first control chamber for picture signal；
Described first control chamber is demodulated operation to the picture signal receiving according to default rule and obtains demodulated sequence；
Described demodulated sequence is compared by described first control chamber with described default modulation sequence, when described demodulated sequence and institute
State default modulation sequence consistent when, described modulation beacon optical signal or interference signal are communication target, described transmitting terminal and described
Receiving terminal sets up communication.
2. communication target as claimed in claim 1 capture experimental demonstration system it is characterised in that
Described first control chamber includes scan module and judge module, and described scan module is used for described image signal is swept
Retouch；Described judge module is used for analysis in described scan module scanning process and determines target beacon optical signal, described target letter
Mark optical signal is described modulation beacon optical signal or described interference signal.
3. communication target as claimed in claim 2 capture experimental demonstration system it is characterised in that
When described target beacon optical signal is strong, demodulation code is 1；When described target beacon light is weak, demodulation code is 0；Multiple institutes
State the described demodulated sequence of demodulation code composition 0 and 1 arrangement.
4. communication target capture experimental demonstration system as claimed in claim 1 is it is characterised in that described default modulation sequence is
The coded sequence of 0 and 1 composition.
5. communication target capture experimental demonstration system as claimed in claim 1 is it is characterised in that described transmitting terminal also includes two
Dimension turntable, the first support shaft and the second control chamber, described first support shaft one end is connected with described second control chamber, and described first
The support shaft other end is connected with described dimensional turntable, and described dimensional turntable can rotate relative to described first support shaft, described sequence
Generator and described modulated laser instrument may be contained within described dimensional turntable；Described receiving terminal also includes dimensional turntable and second
Support axle, described second support shaft one end is connected with described first control chamber, and the described second support shaft other end is turned with described two dimension
Platform connects, and described dimensional turntable can rotate relative to described second support shaft, described collimator and described Charge Coupled Device (CCD) figure
As sensor may be contained within described dimensional turntable.
6. communication target capture experimental demonstration system as claimed in claim 5 is it is characterised in that described second control chamber controls
The dimensional turntable of described transmitting terminal does sinusoidal motion so that described modulated laser instrument sends described modulation beacon with sinusoidal form
Optical signal；Described first control chamber controls the sinusoidal motion that the dimensional turntable of described receiving terminal does same frequency so that institute
State receiving terminal and can receive the described modulation beacon optical signal that described transmitting terminal sends.
7. a kind of communication target catching method, is applied to communication target capture experimental demonstration system, and described communication target capture is real
Test demo system and include receiving terminal and multiple transmitting terminal it is characterised in that methods described includes：
Each described transmitting terminal is treated the beacon optical signal sending and is modulated obtaining modulating beacon beam according to default modulation sequence
Signal, and described modulation beacon optical signal is sent to described receiving terminal, described default modulation sequence prestores and is stored in described transmitting
End；
Described receiving terminal is converted to picture signal after the described modulation beacon optical signal receiving being amplified process；
Described receiving terminal is additionally operable to be demodulated operation to described image signal according to default rule obtain demodulated sequence, works as institute
State demodulated sequence consistent with described default modulation sequence when, described modulation beacon optical signal is communication target, described transmitting terminal with
Described receiving terminal sets up communication.
8. communication target catching method as claimed in claim 7 is it is characterised in that described receiving terminal is pressed to described image signal
It is demodulated also including before operation obtains demodulated sequence according to default rule：
Described receiving terminal is scanned to described image signal and analysis determines target beacon optical signal in scanning process, described
Target beacon optical signal is described modulation beacon optical signal.
9. communication target catching method as claimed in claim 8 is it is characterised in that described default rule includes：
When described target beacon optical signal is strong, demodulation code is 1；When described target beacon light is weak, demodulation code is 0；Multiple institutes
State the described demodulated sequence of demodulation code composition 0 and 1 arrangement.
10. communication target catching method as claimed in claim 7 is it is characterised in that described default modulation sequence is 0 and 1 group
The coded sequence becoming.
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