Hendrik_2000
Lieutenant General
The side-looking array of KLJ-7A airborne AESA radar has near 600 T/R modules, in comparison, Su-57's side-looking N036B-1-01 X-band AESA radars has 358 T/R modules.
Chinese Radar Developments - KLJ series and others
- Thread starter indochina
- Start date
This sounds to me more like selling radars that will end up on China's export arms, like ships and planes to yet another customer country. This means China is not the end user of the radars but rather the integrator to these radars of the ships and planes that is sold to another customer. A good example is the Thales SMART-S Mark II that was exported to China and installed on the C28 corvettes that were sold to the Algerian Navy. Which reminds me, what British radar is similar to that? The Type 997 Artisan 3D radar used on the Type 23 frigate upgrades and planned to be used on the Type 26 frigates. The Chinese does have their own equivalent, the SR2410C, but an export customer may still want to specifically demand a non-Chinese radar, so let's say, in a hypothetical case, the customer will be choosing either the Thales or the British product.
Hendrik_2000
Lieutenant General
China Reveals Prototype Configuration Of Jam Resistant And Counter-Stealth 'Quantum Radar'
The Chinese will still need to overcome major hurdles in order to get the system out of the laboratory and onto the battlefield.
NOVEMBER 6, 2018
China claims to have revealed a prototype of an that is and may be able to . The system’s operation is rooted in proven science and could be game-changing, but the Chinese still face significant development challenges in turning it into an operational capability.
The state-owned China Electronics Technology Group Corporation (CETC) brought a mockup , which might have also been only a smaller scale model, to the biennial Zhuhai Airshow, which opened its doors on Nov. 6, 2018, and has a wide array of military technology on display. CETC says that its 14th Research Institute has been working on the system for years and first tested it in 2015.
The new type of radar “is expected to solve the traditional bottleneck [of] detection of low observable target detection, survival under electronic warfare conditions, platform load limitations, etc.,” according to a CETC brochure, which a obtained at Zhuhai. That same journalist attempted to attend a press conference about the system, but was asked to leave after officials informed them it was for Chinese media only.
The basic principle behind isn’t overly complex in of itself. A traditional radar emits a beam of electromagnetic energy, which then reflects off objects in the distance, allowing the entire system to register their return signiture and position with varying degrees of specificity.
That’s what a quantum radar looks like, by the way. Can anyone translate the brochure?
A quantum radar does essentially the same thing, but using photons that are “” together after a single beam of light is split in half. One of the two new beams passes through a converter that sends the particles traveling onward at a microwave frequency to bounce off objects like a normal radar. The full system would convert the particles back into the visible frequency as they returned to the radar’s receiver.
The second beam doesn’t do much actively, but serves an immensely important purpose. A phenomenon called quantum entanglement means that the pairs of photons that appear at the point a beam of light is split otherwise have a tendency to operate identically regardless of how far they are apart.
What this means is that the quantum radar should be able to register the paired photons in both streams and record only the signals it gets back from particles that have a partner. This would make the system more accurate since it would be able to quickly eliminate signals from other sources, such as ground clutter when tracking targets at low altitude or operating in a maritime role.
In the video below, a researcher at the Dutch research institute explains the basic principles behind a quantum radar.
In principle, this would also give a quantum radar the ability to immediately disregard outside radio frequency “noise,” make it far less vulnerable to traditional jamming, which often involves flooding the receiver with so many signals, or sending out false or misleading signals, that it is impossible to distinguish targets of interest. In the inverse, the photons may not necessarily trigger existing radar warning receivers on hostile aircraft, leaving their crew unaware that someone has detected and is tracking them.
On top of these benefits, the quantum radar should be able to identify , , and . Existing radar absorbent materials are not specifically designed to absorb or defuse these particles. Stealthy shapes might still deflect the photons and cause them to lose energy to some degree, but the system’s ability to isolate only the activities of the entangled photons theoretically means that it should be able to detect even a very weak signal by cutting out all of the background noise.
These same basic principles of quantum entanglement, if scientists can truly harness them, may have other military applications, as well. China is also reportedly developing satellites carrying “” cameras, which might be able to take pictures of stealth aircraft from space, even at night. You can read more about that proposed system
The Chinese will still need to overcome major hurdles in order to get the system out of the laboratory and onto the battlefield.
NOVEMBER 6, 2018
China claims to have revealed a prototype of an that is and may be able to . The system’s operation is rooted in proven science and could be game-changing, but the Chinese still face significant development challenges in turning it into an operational capability.
The state-owned China Electronics Technology Group Corporation (CETC) brought a mockup , which might have also been only a smaller scale model, to the biennial Zhuhai Airshow, which opened its doors on Nov. 6, 2018, and has a wide array of military technology on display. CETC says that its 14th Research Institute has been working on the system for years and first tested it in 2015.
The new type of radar “is expected to solve the traditional bottleneck [of] detection of low observable target detection, survival under electronic warfare conditions, platform load limitations, etc.,” according to a CETC brochure, which a obtained at Zhuhai. That same journalist attempted to attend a press conference about the system, but was asked to leave after officials informed them it was for Chinese media only.
The basic principle behind isn’t overly complex in of itself. A traditional radar emits a beam of electromagnetic energy, which then reflects off objects in the distance, allowing the entire system to register their return signiture and position with varying degrees of specificity.
That’s what a quantum radar looks like, by the way. Can anyone translate the brochure?
A quantum radar does essentially the same thing, but using photons that are “” together after a single beam of light is split in half. One of the two new beams passes through a converter that sends the particles traveling onward at a microwave frequency to bounce off objects like a normal radar. The full system would convert the particles back into the visible frequency as they returned to the radar’s receiver.
The second beam doesn’t do much actively, but serves an immensely important purpose. A phenomenon called quantum entanglement means that the pairs of photons that appear at the point a beam of light is split otherwise have a tendency to operate identically regardless of how far they are apart.
What this means is that the quantum radar should be able to register the paired photons in both streams and record only the signals it gets back from particles that have a partner. This would make the system more accurate since it would be able to quickly eliminate signals from other sources, such as ground clutter when tracking targets at low altitude or operating in a maritime role.
In the video below, a researcher at the Dutch research institute explains the basic principles behind a quantum radar.
In principle, this would also give a quantum radar the ability to immediately disregard outside radio frequency “noise,” make it far less vulnerable to traditional jamming, which often involves flooding the receiver with so many signals, or sending out false or misleading signals, that it is impossible to distinguish targets of interest. In the inverse, the photons may not necessarily trigger existing radar warning receivers on hostile aircraft, leaving their crew unaware that someone has detected and is tracking them.
On top of these benefits, the quantum radar should be able to identify , , and . Existing radar absorbent materials are not specifically designed to absorb or defuse these particles. Stealthy shapes might still deflect the photons and cause them to lose energy to some degree, but the system’s ability to isolate only the activities of the entangled photons theoretically means that it should be able to detect even a very weak signal by cutting out all of the background noise.
These same basic principles of quantum entanglement, if scientists can truly harness them, may have other military applications, as well. China is also reportedly developing satellites carrying “” cameras, which might be able to take pictures of stealth aircraft from space, even at night. You can read more about that proposed system
SamuraiBlue
Captain
This part does not make any sense in which is a physics impossibility.
Photons can only travel in frequency of light within the electro-magnetic spectrum that is what light is.
Hyperwarp
Captain
The wording of the article maybe off, but you can slow down the speed of light dramatically. It is fastest in a vacuum, and down from there onwards.
SamuraiBlue
Captain
It can only be done is a controlled environment and not in vacuum. By the way, light and microwave travels at the same velocity since they are both electromagnetic phenomenon just on different spectrum due to different carrier medium.
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Hyperwarp
Captain
Precisely (That's why I said "fastest in a vacuum, and down from there onwards"). It is the medium in which it travels. That's why we see Cherenkov radiation.
From what I could decipher, they have two entangled photons and they send one through a certain medium that slows it down. How this actually works and helps them detect stealth aircraft, I am not at all clear.
SamuraiBlue
Captain
It states in the article;
So it's traveling through open air towards the object namely a stealth plane but photons cannot travel at microwave frequencies they travel in light frequencies, electrons travel in microwave frequencies thus the different carrier mediums.
Entangled photons can travel in light frequencies but it will only be in twins so you will not know what the photon had hit. Unless you have a massive amounts of cryogenic containers to contain each photons shoot all entangled photons in a matrix that can show size and shape to the observer and arrange the containers in the matrix you had shot then this so called quantum radar will not work.
As always bad journalism.
Microwaves are a subset of light waves in common parlance.
Both electrons and photons can travel at 'microwave frequencies' though, although referring to the energy of an electron by it's de Broglie wavelength makes no sense.
Both electrons and photons can travel at 'microwave frequencies' though, although referring to the energy of an electron by it's de Broglie wavelength makes no sense.