China's quantum radar system able to detect easily stealth aircraft ?

Deltafan

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http://www.globaltimes.cn/content/1005525.shtml

Does China really master enough quantum technology to detect stealth Aircraft ?

If yes, what would be the conséquences for the stealth programs (F-22, F-35, T-50, J-20, FC-31, SCAF, ...) ?
 
Considering China hasn't slowed development of the J-20 that probably indicates what they think of "quantum radar".
 
sferrin said:
Considering China hasn't slowed development of the J-20 that probably indicates what they think of "quantum radar".
If no potential opponent has a working Quantum radar, why should they care J-20 remains visible on this screen? That would only mean that any other target is visible…

A.
 
antigravite said:
sferrin said:
Considering China hasn't slowed development of the J-20 that probably indicates what they think of "quantum radar".
If no potential opponent has a working Quantum radar, why should they care J-20 remains visible on this screen? That would only mean that any other target is visible…

A.

How would they know? Why would they assume it would always stay that way?
 
sferrin said:
antigravite said:
sferrin said:
Considering China hasn't slowed development of the J-20 that probably indicates what they think of "quantum radar".
If no potential opponent has a working Quantum radar, why should they care J-20 remains visible on this screen? That would only mean that any other target is visible…

A.

How would they know? Why would they assume it would always stay that way?


Well...they've got to try something. Very pragmatic the PRC.

"We've 'acquired' this 50TB of US design data and build schematics. It's working for the USA. If we build it, we can sell it to the Paki's, Iran and Argentina for starters. Make more, cost less to build and operate."
 
NeilChapman said:
sferrin said:
antigravite said:
sferrin said:
Considering China hasn't slowed development of the J-20 that probably indicates what they think of "quantum radar".
If no potential opponent has a working Quantum radar, why should they care J-20 remains visible on this screen? That would only mean that any other target is visible…

A.

How would they know? Why would they assume it would always stay that way?


Well...they've got to try something. Very pragmatic the PRC.

"We've 'acquired' this 50TB of US design data and build schematics. It's working for the USA. If we build it, we can sell it to the Paki's, Iran and Argentina for starters. Make more, cost less to build and operate."

Can't imagine them selling J-20s to any of those guys. Too expensive, and it's their premier fighter. Would be ironic if they ended up selling some to Russia though.
 
Thx for stopping the buck right here, right now. We've gotten way beyond off-track.

A.
 
antigravite said:
... We've gotten way beyond off-track.

A.

Indeed and please rethink the tone !
(Thread cleaned )
 
Deltafan said:
http://www.globaltimes.cn/content/1005525.shtml

Does China really master enough quantum technology to detect stealth Aircraft ?

If yes, what would be the conséquences for the stealth programs (F-22, F-35, T-50, J-20, FC-31, SCAF, ...) ?

The brief article mentions this:

the theoretical basis of the quantum radar is that an object will change its quantum properties after receiving photonic signals.

Now, I'm not going to go into the veracity of the claims....
I've had a look at Quantum Radar, Quantum Entanglement, etc on wiki, just as a start.
As a layman, is it correct to say that the reflection of the target via traditional microwave emission is not being measured, but rather, through a convertor, particles (movement/entanglement?) generated by an object is what is being detected by correlating microwaves with an optical beam?

By using a suitable wavelength converter, this scheme generates excellent quantum correlations (quantum entanglement) between a microwave signal beam, sent to probe the target region, and an optical idler beam, retained for detection. The microwave return collected from the target region is subsequently converted into an optical beam and then measured jointly with the idler beam. Such a technique extends the powerful protocol of quantum illumination[3][4] to its more natural spectral domain, namely microwave wavelengths.
 
Quantum polarization-based multidimensional information detection device and method
CN105182351 (A)
Inventor(s): ZHANG ZIJING; XU LU; ZHAO YUAN; ZHANG YONG; JIN CHENFEI; SU JIANZHONG; LYU HUA
Applicant(s): HARBIN INST OF TECHNOLOGY
Application number: CN20151604034 20150921
Priority number(s): CN20151604034 20150921
Abstract:
A quantum polarization-based multidimensional information detection device and method belongs to the laser radar technology field, and is used for solving the problem in the conventional target identification field that a long-distance weak signal echo encounters a sensitivity limit. The quantum polarization-based multidimensional information detection device and method of the present invention is characterized in that a synchronous control module generates a synchronous signal to drive a laser to generate a pulse signal, at the same time outputs the synchronous signal to a polarization state encoder to carry out the horizontal, vertical, diagonal and antidiagonal pseudorandom pulse sequence modulation; the laser after the modulation is carried out the collimation and beam expanding by an emission optical device to irradiate a target, and an echo signal is radiated to a reception optical device and then is divided into four signals by three optical splitters to pass four single-photon detectors Gm-APD respectively; a synchronous signal processor obtains an echo pulse sequence according to the pulse signals detected by the four single-photon detectors Gm-APD, and obtains the multidimensional information of target distance, intensity and polarization according to the echo pulse sequence and the synchronous signal. The quantum polarization-based multidimensional information detection device and method of the present invention is used for the detection of the laser radar long-distance weak signals.

Quantum radar and method for realizing target detection by utilizing same
Parent No.CN104330802 (A)
Inventor(s): TAN HONG
Application number: CN20141567093 20141022
Priority number(s): CN20141567093 20141022
Abstract: The invention discloses a quantum radar and a method for realizing target detection by utilizing the same. The quantum radar comprises a laser source for generating light signals; an attenuator for attenuating the light signals generated by the laser source into single-photon signals; a quantum grating for converting the single-photon signals into probability wave interference signals; an optical splitter for splitting the probability wave interference signals into a first interference wave and a second interference wave; a signal emission mirror for emitting the first interference wave to a target; a single-photon detector for outputting voltage signals according to the probability correlation effect; and a target judgment and outputting module for calculating the position of the target according to the voltage signals. The quantum radar carries out target detection by utilizing a non-causal parallel event; and through emitting the probability interference wave to the target, target information can be obtained without measuring (receiving) echowaves, so that the performance of the radar is improved.

Quantum entanglement radar
Patent No. CN103513255 (A)
Inventor(s): GE HONGSHAN
Applicant(s): GE HONGSHAN
Application number: CN20121210616 20120615
Priority number(s): CN20121210616 20120615
Abstract: Through active or passive utilization of the quantum entanglement phenomenon objectively existing in the nature, a quantum entanglement radar is a radar system which is capable of detecting and finding various to-be-detected objects especially various flying objects, space objects, water surface ships and submarines that are invisible to radio, by combination of different working modes of a resonance wave emitter, a quantum mirror and an interpretation system of quantum entanglement information.

High sensitivity polarization laser radar system based on Gm-APD
Patent: CN107272020 (A)
Inventor(s): ZHANG ZIJING; ZHAO YUAN; SONG JIE; SUN YIFEI +
Applicant(s): HARBIN INST TECHNOLOGY +
Application number: CN201710592023 20170719
Priority number(s): CN201710592023 20170719
Abstract: The invention relates to a high sensitivity polarization laser radar system based on Gm-APD, relates to the laser radar technology field and solves problems of incapability of detecting weak signals and incapability of distinguishing a target from a shielding object in the prior art. A modulation pulse laser device is driven by a pulse code generator to generate a laser signal pulse sequence, the laser signal pulse sequence is modulated through a polarizer and a first one-quarter wave plate, and the target is irradiated through a scanner; a returned laser signal through the scanner sequentially realizes incidence to a narrowband optical filter, a second one-quarter wave plate and a polarization splitter, the incident laser signal is divided by the polarization splitter into two paths of laser signals, the two paths of laser signals are respectively received by two single-photon detectors, detection signals outputted by the two single-photon detectors are inputted to a signal processing module, and the signal processing module is used for carrying out correlation of a reference signal and the two paths of detection signals to acquire a distance, intensity and a polarization degree of corresponding pixel points on a detected object. The method is advantaged in that the method is suitable for detecting the weak signals.

Weak light polarization measurement-based space small target material identification apparatus and method
Patent Number: CN107632310 (A)
Inventor(s): WANG FENG; LYU HUA; JIA XIAODONG +
Applicant(s): TIANJIN JINHANG INSTITUTE OF TECH PHYSICS +
Application number: CN201710817401 20170912
Priority number(s): CN201710817401 20170912
Abstract. The present invention relates to a weak light polarization measurement-based space small target material identification apparatus and method and belongs to the photoelectric detection technical field.According to the apparatus and method of the invention adopted, weak light detection and polarization detection are combined; long-distance detection is realized through the weak light detection technology; and target material identification is realized through the polarization detection. Thus, the weak light polarization measurement-based space small target material identification apparatus andmethod of the invention can be used for space small target monitoring and early warning and the like. With the apparatus and method of the invention adopted, the shortcoming of the insufficient resolving power of a microwave detection means and the shortcoming of the monotonicity of the information acquisition of an optical detection means can be eliminated.

Extremely-weak optical signal degree of polarization detection system and detection method based on same system
Patent: CN106896371 (A)
Inventor(s): ZHANG ZIJING; ZHAO YUAN; ZHANG YONG; JIN CHENFEI; ZHANG JIANDONG; CEN LONGZHU; LI SHUO; YAN LINYU +
Applicant(s): HARBIN INSTITUTE TECHNOLOGY +
Application number: CN201710225333 20170407
Priority number(s): CN201710225333 20170407
Abstract: The invention relates to an extremely-weak optical signal degree of polarization detection system and a detection method based on the same system, and relates to the technical field of laser radar. The invention aims to solve the problem that when the existing laser radar detects a very long distance target, the obtained information is single and the judgment and recognition of the target cannot be effectively performed. The extremely-weak optical signal degree of polarization detection system and the detection method based on the same system radiate the target with an optical signal subjected to polarization modulation, split the echo signal light into four ways, and use Gm-APD for performing photon counting. According to the counting result, the photon polarization information of the echo signal light is obtained, so as to achieve the purpose of identifying the target. The invention uses Gm-APD for photon counting, the response sensitivity has reached a single photon level, breaking the counting bottleneck of the traditional radar, and according to the response counting, an extremely weak signal polarization solution is achieved. The method and the system provided by the invention are applicable to long-distance target identification and detection and weak light optical detection of the single photon level.

A monostatic quantum radar cross section prediction method for three-dimensional convex targets
Patent: CN109461216 (A)
Inventor(s): FANG ZHONGHUA +
Applicant(s): CHINA SHIP DEV & DESIGN CT +
Application number: CN201811378285 20181119
Priority number(s): CN201811378285 20181119
Abstract: The invention discloses a monostatic quantum radar cross section prediction method of a three-dimensional convex target, includes such steps as importing geometric model of convex object into mesh generation software, discretizing, generating mesh file of stl format, and reading node coordinate value, face element and normal information of mesh model one by one according to mesh file of stl format; 2) calculation of projected cross-sectional area of convex object; 3) Calculation of quantum radar cross section of convex targets. The invention breaks through the key technology of calculating theprojected cross-sectional area of any three-dimensional convex object, based on projection, In the steps of space rotation transformation, panel triangulation and area summation, a monostatic quantumradar cross section (QRCS) calculation method for arbitrary three-dimensional convex targets is established, and the range of QRCS calculation is extended from two-dimensional to three-dimensional for the first time, which greatly improves the applicability and practicability of the original calculation method.
 

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Thanks for this answer antigravite.

China seems, at least, to master the theory of this new radar model.
 
Hi.

This set of patent references is just the beginning of any honest elementary homework, just like the tip of the iceberg. I feel pretty comfident that browsing through peer-reviewed literature would bring up a least a hundred more references. Well… Fact checking news articles is a prerequisite. Digging up primary sources a must. Then you can listen / read / sort through online psyop operatives trying to forge the mindscape to make your mind up. That's all. And that's very simple. And yes, as always, it requires homework, i.e. a bit of sweat.

A.
 
We need Range equation for this new kind of Radar.

I recalled there was already book on this subject, gonna find it.
 
antigravite said:
Hi.

This set of patent references is just the beginning of any honest elementary homework, just like the tip of the iceberg. I feel pretty comfident that browsing through peer-reviewed literature would bring up a least a hundred more references. Well… Fact checking news articles is a prerequisite. Digging up primary sources a must. Then you can listen / read / sort through online psyop operatives trying to forge the mindscape to make your mind up. That's all. And that's very simple. And yes, as always, it requires homework, i.e. a bit of sweat.

A.
When I have time, on the websites like Secretprojects my "homework" concerns :

-1 : Payen planes and the history of these planes.
I visited the Musee Delta (where I met too the daughter of M. Payen and later the french author of the aviation history Pierre Gaillard)
I visited the archives of the french Musee de l'Air in Le Bourget,
I visited the archives of the french Armée de l'Air in Vincennes near Paris,
I bought/buy/will buy books
I bought/buy/will buy magazines,
And I search, share and discuss on the net.
And reguliarly I make global search on the web to find news about this subject and to share it, here and on other websites. And I can make (and I make) mistakes too (translations, copies, misinterpretations, ...) that I correct as soon as I (can) find their.

And as you can see. It's not only "Homework". And if you want to find somebody who "sweats" more than me about this subject since 15 years, at least on the web, I think that you can made "homework" and "sweat" until the end of Eternity and beyond.
And I am not alone.
For example, to make and share Payen drawings and 3D, Jemiba is far, far, far, ahead of me ;D. On the web, Modellers (even flying modellers) build and show/share home made Payen models or what they buy by Unicraft and others. Authors (Tophe, Rico, Carbonel, ...) help the Payen fans here and/or on other websites. Other enthusiasts and amateurs here and elsewhere on the web help us and share too (I suspect sometimes that Hesham ;) doesn't sleep and doesn't eat and only searchs and shares aviation history on Secretprojects).

As shows the example of the Payen planes, nobody was/is/will be waiting for you to "homework" and "sweat".


When I have more time and money

-2 : delta planes, futuristic/original planes in the history of aviation and french planes.
I buy books
I buy magazines
I search and share and discuss on the net.


When I have even more time and money

-3 : other planes.
I buy magazines
I search and share and discuss on the net.



Too : I don't speak very good English. It's the same for German and Russian languages (that I learned a long time ago too). My old dictionaries for these three languages, and Google translation for these three languages too and other languages (for example the portuguese during the last fighter contest in Brazil), can be useful. But it's impossible for me to understand all these languages as in french.



And sometimes I have discussions and digress about some subjects. For example, I have sometimes discussions on a french websites about the efficiency of the stealth planes in the future. I think that this technology would have problems the day when there would be radars (and in particular airborne radars) to counter it. I think it can be soon. Others think it will be in a very long time.

On a french magazine I recently found news (two lines...) about this chinese quantum radar. I searched on the web in french and English about it and found tens more or less explanatory articles/files. I didn't find something concrete, and I am not a specialist. And the history, and in particular aviation and technological history, is full of announcements that were, finally, without concrete production.


I opened a topic on a french website to know the opinion about it. And I was interested too to know what was the opinion about it on SecretProjects where contributors are from the world. That's why I opened this topic.
I follow the two discussions on the two websites about the possibility of this chinese radar to be used really, with efficiency and in large scale. It can be interesting too to know what other lands can made too. And it can be interesting to discuss (at least for me and for the ones who like to discuss about it) about what would be the conséquences on military stealth planes (now and afterward). I wrote "discuss" and not "know" because I don't know someone who knows the Future.

All the contributions are interesting. Your second shows that, there is, in China, theoretical research, at least.

But, nobody is forced to answer and my question is to be seen as fun, not as existential.

And if somebody is very competent and/or very interested in this question, I hope that he will answer like I do when I answer about the Payen planes (where I am more "very interested" because of my lack of technical knowledges, even if sometimes I make "homework" and "sweat" and buy to correct it) on this website and on all the other websites where I share about the Payen planes, and like almost all the other contributors answer here and elsewhere on the web about the subjects that they like.

Once again, thanks for your second answer.
 
It is probably not a true quantum radar. If you look at the English globaltimes story, they describe it as a single photon radar:

The 14th Institute of China Electronics Technology Group Corporation (CETC) has successfully developed China's first quantum radar system last month, Xinhua News Agency reported. The system, which is based on the technology of single photon detection, counts as yet another major milestone for China in quantum research.

The quantum radar system was developed by the Intelligent Perception Technology Laboratory of the 14th Institute of CETC. Researchers completed experiments on quantum detection and target scattering characterization. In the target detection experiment, conducted in a real atmospheric environment, the detection ability of the system was proven to be over 100 kilometers.

This implies it is not a "true" Quantum radar that exploits entanglement, and really amounts to only a radar with a very sensitive radar receiver and very low power output. The only significant advantage is that RCS can be higher under some conditions when a very small number of photons is used to illuminate the target. Interesting for sure, but hardly the "end of stealth".
 
^not saying I believe what the chinese media are claiming but fwiw, there are techniques for single photon detection which are based on using quantum entanglement... see for example: http://phys.org/news/2013-07-photons-quantum-entanglement.html, pdf copy of paper can be seen here: https://arxiv.org/pdf/1304.3270v3.pdf
 
r3mu511 said:
^not saying I believe what the chinese media are claiming but fwiw, there are techniques for single photon detection which are based on using quantum entanglement... see for example: http://phys.org/news/2013-07-photons-quantum-entanglement.html, pdf copy of paper can be seen here: https://arxiv.org/pdf/1304.3270v3.pdf

Thx. I have no expertise in those quantum radar matters and therefore look at this scientific field with naive, fresh eyes and mind, always thinking of which technological surprise might be under way.

A.

PS) Some references of interest for a conceptual bird eye's view. The CIA has also released declassified articles of interest from its internal journal, Studies in intelligence. They are worth reading for those which can be accessed...
[list type=decimal]
[*]https://cryptome.org/2014/07/strategic-surprise-deception-denial.pdf
[*]https://www.asymmetricthreat.net/whitepaper/decisionsuperiority.shtml
[*]James G. Ostensoe, "The Problem of Scientific Surprise," CIA Studies in intelligence, 1961, Vol.5, issue 4, Declassified in 1995. CIA LINK
https://www.cia.gov/library/center-for-the-study-of-intelligence/kent-csi/vol5no4/html/v05i4a02p_0001.htm
[*]R. R. Scidmore, "The Symptoms of Scientific Breakthrough," CIA Studies in intelligence, 1960, Vol.4, issue 1, p. 73 ff. (referenced in the above article, not accessed, apparently still not declassified)
[/list]
 
Specialized book i found for Quantum radar..

Marco Lanzagorta, Synthesis Lectures on Quantum Computing : Quantum Radar

It compares "classical" radar theory and new Quantum radar. It also have, hmm bare form of range equation. One problem is that the "Quantum Cross Section" Is still not fully understood.

quantum_radar_range_by_stealthflanker-dakpea3.png
 
thanks @stealthflanker for the book reference, very interesting (though I've forgotten practically all my bra-ket notation from way back in my university days)...

from the book posted it appears quantum radar is divided into two classes (section 5.1.2 in the book):

type 1 - where non-entangled microwave frequency photons are transmitted and received (this is to be differentiated from use of quantum entanglement in the detection media as was posted previously)

type 3 - where entangled microwave frequency photon pairs are created, one of each pair is transmitted and received, then the received photon correlated with their entangled pair counterpart which was kept at the radar (in @kaiserbill's previous post the system described there was quantum illumination with entangled photons which makes that also a type-3 system)

(as an aside, type 2 is LADAR which since it uses light frequencies is not considered a class of quantum radar though it is a type of quantum sensor)

so in the case of the chinese claim the question would be whether in their implementation they used entangled photons in the transmission or non-entangled photons, in order to classify their system as either a type-1 or type-3 quantum radar
 
Hi guys,

here are a few references of interest — not patents — which, for the most part, are still cut'n'pasted in their original structured aspect.

A.

Liu Kang (刘康), Xiao Huai-Tie (肖怀铁) and Fan Hong-Qi (范红旗), "Analysis and Simulation of Quantum Radar Cross Section," Chinese Physics Letters, Volume 31, Number 3. Abstract: We derive a modified analytical expression of a quantum radar cross section (QRCS). Subsequently, we present a comparison between the QRCS and a classical radar cross section (RCS) and analyze the factors that can affect the intensity of the peak and side lobes. Simulation results on a flat rectangular plate demonstrate that QRCS has a similar structure to that of RCS. The analysis of side-lobe structure can benefit the design of quantum stealth platforms as well as the research on quantum radars.
links:
http://iopscience.iop.org/article/10.1088/0256-307X/31/3/034202
http://iopscience.iop.org/article/10.1088/0256-307X/31/3/034202/pdf

- - - - - - - - - - - - - - - - - - - - -
Kang Liu, "Analysis of Quantum Radar Cross Section and Its Influence on Target Detection Performance," Photonics Technology Letters, IEEE, 2014, Vol.26 (11), pp.1146- 1149
Abstract (原始语种摘要): Quantum radar is a new detection technology based on the mechanism of quantum physics and is promising for enhancing radar target detection capability. In this letter, the quantum radar equation is established based on the traditional radar equation; meanwhile, how the quantum radar cross section (QRCS) influences target detection performance and how QRCSs for some typical targets distribute are investigated via simulations. Simulation results demonstrate that the signal-to-noise ratio increases with the QRCS, the peak values of side-lobes of the QRCS for the cylinder surface fluctuate little, and the QRCS for corner reflectors almost exhibits no variations in a wide range of incident angles. The results listed above can benefit the signal design and performance evaluation of quantum...

- - - - - - - - - - - - - - - - - - - - -

【作者】 徐世龙; 胡以华; 赵楠翔; 王阳阳; 李乐; 郭力仁;

【Author】 Xu Shi-Long;Hu Yi-Hua;Zhao Nan-Xiang;Wang Yang-Yang;Li Le;Guo Li-Ren;State Key Laboratory of Pulsed Power Laser Technology(Electronic Engineering Institute);Key Laboratory of Electronic Restriction of Anhui Province;

【机构】 脉冲功率激光技术国家重点实验室(电子工程学院); 电子制约技术安徽省重点实验室;

【摘要】 量子雷达散射截面是描述光量子态照射下目标可见性的重要参数.本文对量子雷达散射截面的推导进行了扩展,使其可以应用于非平面凸目标的QRCS计算.针对面心立方、体心立方以及密排六方三种金属原子晶格所构成的目标的量子雷达散射截面进行了计算,结果表明不同的原子排列方式下,目标QRCS主瓣基本不变,而量子旁瓣在原子排列稀疏的目标中更为明显.

【关键词】 量子雷达; 散射截面; 原子分布; 目标探测;
【基金】 国家自然科学基金(批准号:61271353)资助的课题~~
【所属期刊栏目】 电磁学、光学、声学、传热学、经典力学和流体动力学 (2015年15期)

etc.
 
r3mu511 said:
thanks @stealthflanker for the book reference, very interesting (though I've forgotten practically all my bra-ket notation from way back in my university days)...

from the book posted it appears quantum radar is divided into two classes (section 5.1.2 in the book):

type 1 - where non-entangled microwave frequency photons are transmitted and received (this is to be differentiated from use of quantum entanglement in the detection media as was posted previously)

type 3 - where entangled microwave frequency photon pairs are created, one of each pair is transmitted and received, then the received photon correlated with their entangled pair counterpart which was kept at the radar (in @kaiserbill's previous post the system described there was quantum illumination with entangled photons which makes that also a type-3 system)

(as an aside, type 2 is LADAR which since it uses light frequencies is not considered a class of quantum radar though it is a type of quantum sensor)

so in the case of the chinese claim the question would be whether in their implementation they used entangled photons in the transmission or non-entangled photons, in order to classify their system as either a type-1 or type-3 quantum radar

Those reminds me of "traditional" Coherent and non coherent radar.

Perhaps Chinese will go for the 3rd as coherency may allow measurement of doppler effect which in turn allows the radar to filter clutter like our "traditional" pulse doppler radar.
 
stealthflanker said:
Those reminds me of "traditional" Coherent and non coherent radar.

hehe, nice observation and in a way seems spot on about a similarity/analogy between the two...

ie., a quantum radar using entangled quantum illumination would entangle a photon at microwave freq with a photon at optical freq, transmit the microwave freq photon and retain the optical freq photon at the radar; the received microwave freq photon then gets correlated with the retained optical freq photon in order to extract info...

in an analogous way a doppler radar would mix a freq from the coherent oscillator (COHO) in the mixer in the transmit side (ie. mix it with the freq from the stable local oscillator/STALO which provides the RF carrier freq); any received RF echo is then mixed in the receive side with the same COHO freq (after mixing with the STALO in order to get the intermediate freq/IF used by the receiver), and this mixing with the COHO freq allows extraction of a doppler freq if one is present in the return echo...

so it's as if the retained optical photon in a quantum radar is the analogy of the COHO in a doppler radar...
 
[/URL]

"According to the Xinhua News Agency and the People's Liberation Army Daily, China ’s first quantum radar prototype has recently made its public debut at the Zhuhai Air Show and Beijing Radar Summit. This radar is China's first single photon detection quantum radar prototype developed by China Electronics Technology Division 14. Information on the Internet indicates that conventional radars are only in the form of electromagnetic waves, and their search range and effects are limited. Quantum radar can use photons to detect and develop the advantages of quantum characteristics. In addition, quantum radar has very high accuracy and anti-interference, especially for complex environments. It can identify very small sources and can detect stealth warfare. Situation of bucket machine.

132km ranging far beyond photoelectric equipment

According to a report by Science and Technology Daily in August this year, as early as 2015, after the development team of China Electric Science and Technology Research Institute completed the prototype of the quantum radar, it carried out a long-range detection test on the Northwest Plateau and broke the detection limit of similar radars in one fell swoop. Remote detection was implemented for the first time.

Recently, Wang Jianming, deputy director of the 14 China Electric Power Research Institute, a subject-matter expert panel expert of the Military Commission's Science and Technology Commission, and chief expert of the National Defense 973 Program, disclosed in a paper entitled "Radar Systems and Technologies for the Next Generation of War" published by Modern Radar Magazine. A quantum radar system based on a superconducting single photon detector has carried out a detection test in the real atmospheric environment in Qinghai Lake, and the detection range of the target has reached 132km.

Industry analysis generally believes that the distance has far exceeded the capabilities of traditional photoelectric detection equipment, making up for the short board due to insufficient detection distance when traditional photoelectric detection systems work with classic source radar systems, and is at the leading level in China and even the world.

Wang Jianming introduced that quantum radar is the introduction of quantum technology into the field of radar detection. Through the use of quantum resources, high-sensitivity detection and high-dimensional quantum state modulation can be achieved, and the technical bottlenecks of traditional radars in anti-jamming, anti-stealth and target recognition are solved. . The authoritative expert revealed that quantum radar has the advantages of long detection distance, low transmission power, rich detection methods, and strong anti-jamming capabilities. It has potential application prospects in new airborne long-range anti-stealth early warning systems, UAV anti-missile systems and other fields. "
 

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