One, what is quanta radar?

Quanta radar belongs to radar of a kind of new idea, it is technology of will traditional radar and union of quanta IT photograph, use the wave bead dual property of electromagnetic wave, the microcosmic quanta that traverses pair of report magnetic field and quanta condition operation and control implementation target are explored, measure and become metrical long-range sensor system.

 

Quanta radar benefit undertakes resembling to the target with the quanta character of photon, as a result of any objects (be like invisible plane) the after that is touched to touch by hair missive photon, the quanta that can change photon is characteristic, and the reflex of target of classics of photon question mark that character is changed, after receive and be being become to resemble by question mark receiver, with respect to the specific place that can explore an object easily.

 

And be disturbed almost impossibly by other system because of photon, the security of quanta radar is accordingly high. Of the principle of this technology and quanta communication add secret technology quite similar, try to pick in listener-in take, when disturbing the message that photon carries, because photon character suffers a change, let listener-in expose his position instead.

 

Quanta radar explores a field through introducing quanta IT classical radar, solved classical radar to be in explore, measure and become the technical bottleneck that resembles waiting for a respect, promoted the integral performance of radar. Its are principal application is to realize a target to have the exploration that not have, can expand further on this foundation applied domain, application includes quanta to become wait like radar of radar, quanta range finding and quanta navigation radar.

 

2, the distinction of quanta radar and classical radar

Opposite at traditional radar, quanta radar with electromagnetism field microcosmic quanta regards information as carrier, launch what comprise by a few amount photon to explore signal, photon and target interaction process follow quanta electrodynamics regulation, sink uses photon detector to undertake reception, pass estimation of quanta system condition and the target information in measuring a technology to get voice of echo signal photon.

 

 

Quanta radar comprises block diagram basically

 

Specific for, quanta radar distinction basically includes at the characteristic of classical radar:

 

Carrier of ① , information and signal system are different

Classical radar is based on the fluctuation of electromagnetic wave, modulation and demodulation make be explored in order to get in region of time domain, frequency domain, polarization to its the information of the target; Quanta radar pays attention to the particle sex of electromagnetic wave more, used quanta to pester especially wait for special quanta effect, thereby hopeful gets more target information.

 

② , signal handles method and information to get means to differ

Current, the target detection mechanism of classical radar is to be based on letter a confusion of voices to compare the oldest standard mostly, use the photograph with echo macroscopical signal to join a feature to realize the estimation of target parameter; Quanta radar does not need mixed signal to handle a process normally, the quanta that uses essence of life to allow however measures a method to measure ” to give the target information that carries among them from the “ in echo.

 

③ , catapult and receiver structure and parts of an apparatus are different

In quanta radar domain, quanta effect will bring about traditional parts of an apparatus to cannot work effectively, need to study the design accords with the quanta parts of an apparatus of quanta electrodynamics regulation thereby. From this, noise of classical radar system basically is behaved in quanta radar system for quanta noise, consequently quanta radar has extremely small noise base normally.

 

 

 

As above, quanta radar and classical radar have a lot of and different, but go up from essence for, quanta radar still belongs to traditional radar to explore with into the academic system category that resemble, quanta radar is the development of pair of traditional radar technologies and complement, is not overturn and replace. Come from broad sense say, when we are discussing quanta radar technology, not confine its job frequency, microwave ／ millimeter wave, infra-red, too the wave band such as hertz can be used; Come from narrow sense say, if can make quanta radar works at traditional radar frequency paragraph, especially microwave frequency paragraph, so quanta radar will have whole climate, round-the-clock job capacity, its application range will be more wide.

 

3, the classification of quanta radar

What use quanta phenomenon and exploration signal form and information to get way according to place is different, quanta radar has a variety of classification methods, what use quanta phenomenon and information to get way according to place above all is different, can be quanta radar cent the following 3 categories.

 

Quanta enhances radar

Radar emits the electromagnetic wave of classic form, use photon detector receives echo signal, benefit increases with quanta detect technology in order to promote radar systematic property, at present this technology already obtained relatively wide application in lidar. In addition, the frequency when quanta enhances radar to still include to be based on high accuracy is fiducial delivered quanta enhances array radar.

 

Quanta pesters radar

Quanta radar emits tangly quanta condition electromagnetic wave, catapult launchs the signal photon in pestering photon to be opposite go out, “ backs up ” photon reservation is in receiver, if the target reflexes signal photon,come back, so pass pair of signal photon and photon of “ backup ” pester measure what can achieve pair of goals to detect.

 

Quanta derives radar

Draw lessons from develop at quanta physics theory or its maths thought and come, the performance that can show system of promotion tradition radar but do not rely on system of true quanta physics to come true, reach in thunder at present faster like domain development.

 

Quanta is become resemble saying “ ghost is become again like ” , it is a of quanta optics main branch, its use the quanta coherence of smooth field and uncertainty, use 2 rank (high-ranking) associated method is implementation to the target into picture, because this also calls correlation,become picture. Its explore a process to be crossed to use pump riverside photon (BBO) crystal, be opposite through generation is being changed to pester photon in great quantities below parameter, each pester photon to be opposite the polarization between voice each other orthogonality, to explore tangly photon bisect photon is mixed like photon, into like photon reservation is in quanta memory, after exploration photon launchs classics target to reflex by catapult, be received by quanta radar, basis exploration photon and the exploration that pester correlation to be able to improve radar into what resemble photon function. With do not use tangly quanta radar photograph to compare, use tangly quanta radar resolution to rise with 2 square rate.

 

Additional, what the basis explores signal form is different, quanta radar still can divide the photon that it is sheet to explore quanta radar and much photon to explore quanta radar.

 

Odd photon explores quanta radar: Catapult launchs odd photon or pester the area that target of ask of photon pulse explore may exist, if the target exists, criterion signal photon will be returned with certain probability be in to receiver, the measurement that returns individual photon condition through be opposite can collect target information. This is a kind of good exploration program, the advantage is to suffer interference scarcely, defect is implementation difficulty.

 

Much photon explores quanta radar: Catapult emits electromagnetic wave of condition of be concerned with or pester voice electromagnetic wave, the associated sex of the many photon in using transmit undertakes the target is explored, the measurement that receiver place carries pair of individual photon state and differentiate the target that finish is explored. Explore quanta radar at odd photon relatively, although it can get the interference of certain level, but it is relatively some easier that implementation rises, have greater real sense.

 

 

 

4, the technical advantage of quanta radar

Current, classical radar is put in a few defect, it is emissive power big (a few tile) , electromagnetism leak is big; 2 it is ability of the body that oppose hidden from view opposite poorer; 3 it is to become opposite like ability weaker; 4 it is signal processing is complex, real time sex is weak. Put the technical difficult point that be in in the light of classical radar, quanta IT all is put in stated technical dominant position, can pass be united in wedlock with classical radar photograph, promote the exploration of radar property.

 

Above all, the information carrier in quanta IT is individual quanta, the generation of signal, modulation and receive, detected object all is individual quanta, because this is whole,receive a system to have extremely tall sensitivity, namely the noise base that quanta receives a system is extremely small, compare the receiver of classical radar, noise base can be reduced a certain number of quantitative class. Again oversight job frequency paragraph, the implementation element such as clutter and dynamic limits, criterion radar action distance can promote considerably multiple count even decuple. Promote radar greatly thereby to faint target, even the exploration ability of concealed body target.

 

Next, the modulation object in quanta IT is quanta condition, compare the information modulation object of classical radar, quanta condition is OK the microcosmic information such as ” of change of fluctuate of token quanta “ , have than classical when, the more high-ranking information such as frequency, polarization, namely modulation information dimension is spent taller.

 

Set out from information theory angle, carry the operation that ceases to Gao Weixin, can get more performance. Be explored to the target and character, pass high-ranking information modulation, can not affecting the premise that accumulates benefit to fall, base of farther depress noise, promote the capability of faint target detection in noise thereby; From signal analytic angle sets out, through be opposite signal undertakes quanta high-ranking and microcosmic modulation, make conventional signal analyses a method hard the information that accurate extraction collects the modulation in signal, promote what fall in electronic antagonism environment to fight monitor ability thereby. Integrated and character, connect those who cross quanta IT to introduce, change through quanta receive, on the principle can reduce the noise base power in receiving signal effectively; Pass quanta condition modulation, the dimension that information processing can add on the principle is spent, can promote a letter benefit of comparing of a confusion of voices on one hand, can reduce the possibility that transmit is mixed to duplicate by accurate analysis on the other hand, be explored in the target thereby and electronic antagonism domain has capacious applied latent capacity.

 

5, quanta radar develops course

The technology studies related quanta radar the century on traceable 60 time, p.A.Bakut explored the possibility that uses quanta signal in traditional radar system.

 

1967, in quanta mechanical, tradition detects go up with the foundation that estimates theory and classic information theory, the person such as C.W.Helstrom studied quanta detects detect in order to break through a tradition theoretically with estimation the function limit with estimation method, get the academic base with was established main for information of quanta radar target.

 

But the time that quanta radar grows truly is short nevertheless 10 old.

 

Quanta radar is the system of new idea weapon of the bud after 21 centuries, be opposite to answer invisible opportunity for combat gradually the world of generalization, defend demand of square need opposed.

 

U.S. Army F-22 is invisible opportunity for combat

 

Professor Lloyd of American Masschusetts Institute of Technology put forward quanta to explore systematic model remotely first 2008.

 

American collect was cut 2012 this especially big the research group that learns optical institute claims to grind the quanta radar that gives out a kind of interference rejection is academic, the quanta condition commutation that benefit of this kind of radar meets the generation after hitting a target with photon will diagnose, can the microcosmic information such as ” of change of fluctuate of token quanta “ . Sensitivity of whole quanta radar is extremely tall, noise base is extremely small, be disturbed almost impossibly by device of electric wave interference again, plus can oversight job frequency paragraph, clutter, this kind of radar is explored invisible the limits of opportunity for combat is theoretic can amount to number decuple.

 

The group of Tokyo university used superconductive return circuit 2012, obtained microwave frequency paragraph odd photon condition and follow-up compress the voice generation, component that receives a technology new breakthrough.

 

Dr. Lopaeva of Italy reached quanta radar to become in the lab 2013 resemble exploring, prove its have the possibility of actual combat value.

 

” of key laboratory of technology of perception of 14 “ wisdom released Chinese cable division to develop odd photon successfully to detect in August 2016 finished product of quanta radar system, in division of cable of university of Chinese science and technology, China the joint efforts of the synergic unit such as university of place and 27 Nanjing falls, the experimental test and verify that finished quanta to explore research of character of scattering of mechanism, target and quanta to explore a principle, and outer field finishs environment of true solid air lay exploration test, obtained 100 kilometers class to explore might, exploration sensitivity is great rise, index all is achieved expect the result, and can discover active service invisible opportunity for combat.

 

 

 

To this, the expert expresses, the relevant research of Chinese quanta radar already was done old, become the job that resembles a respect in quanta before, did not go up in the level of odd photon, however the high-ranking and associated character of consumed comes true to resemble. Although can break through the interference such as cloud and mist, but into more complex still like the process, technological process is more lengthy also, practical still remain to develop, very it’s hard to say calls quanta to become picture. And breakthrough of technology of radar of quanta of odd now photon, it is the result that old technique accumulates. Current, china is in a technology only in quanta radar domain advanced level, still not be lead position.

 

In recent years, as the flying development of quanta IT, quanta radar technology greeted new research climax, aim at the body that oppose hidden from view to explore, the applied latent capacity of the domain such as electronic interference rejection, research of current quanta radar pesters radar, quanta to enhance radar and quanta to derive radar in quanta 3 stature direction progress are rapid.

 

6, the research of prospective quanta radar develops a tendency

System of job of current quanta radar, target is explored with into resemble waiting for problem of sex of a lot of mechanism still unidentified clear, the research of relevant theory, technology, system in the ascendant, academic research achievement still exists to effective system application very large space. Trend of its research development basically includes tomorrow the following at 4 o’clock.

 

Preparation of microcosmic quanta condition and detect

Quanta radar catapult and the core that receiving a system to design is design of quanta radar system, among them, the preparation of microcosmic quanta condition and detect, the preparation that pesters voice especially and detect, it is to blast off with the main difficult problem in receiving a system to consider.

 

Additional, although quanta is pestered generation and detect academic research is quite perfect already, OK in the lab preparation and detect near visible light frequency paragraph pester photon condition. However, to microwave or other frequency paragraph quanta condition, its generation and explore the problem that remains to have challenge sex, can foreknow, union exceeds material technology hopeful to solve this one serious difficult problem.

 

Get quanta system information

By quanta radar fundamental definition reachs his working principle is knowable, echo of exploration signal generation, radar and target interaction, target detects the operation that waits for a process to ought to regard pair of quanta as the system, accordingly, principle of quanta information processing and means also will handle a method to having very big distinction with conventional signal.

 

Answer relatively theoretically with processing of classical statistic signal, estimation of condition of system of need research quanta and detect academic, get the theory with be offerred important to prop up for information of quanta radar target.

 

Study quanta radar target is characteristic

Radar target character is radar explores the base that gets target information, to radar at the same time the design has very great actual and directive value.

 

Be in related quanta radar in the technology, quanta radar signal and target interaction mechanism, different goal makes in order to and transmission channel to the “ modulation ” of signal photon condition is a target to the problem such as the change action of quanta condition explore as theoretical as what identify foundation. Accordingly, character of scattering of quanta radar target studies is quanta radar the indispensable serious content in process of exploration of relevant technology research.

 

Microcosmic quanta is held accuse the “ interface ” with macroscopical application

The quanta condition operation that quanta radar is based on pair of report magnetic field and control achieve pair of goals explore, measure and become picture, however microcosmic quanta news is very bad by people direct “ feels ” . To realize the actual application of quanta radar technology, need research is microcosmic the correspondence between quanta information and macroscopical physical quantity and how quanta of macroscopical problem translate into microcosmic issue is solved, namely microcosmic quanta is held accusing the “ interface ” with macroscopical exploration application is a when quanta radar technology moves toward actual application to need to solve serious problem.

 

A few afore-mentioned respects have fundamental research value, if have breakthrough general,to quanta radar progress comes into being to urge action importantly.