How PAK-FA would counter F-22 in future aerial warfare

Sort of.

It's true that photonic radar is sending signals between electronics with photons rather than electrons.

miketheterrible wrote:Quantum radar is using concept of quantum entanglement which is Photonics.

https://en.m.wikipedia.org/wiki/Quantum_entanglement

1. Not once did RTI or KRET mention that it is a quantum radar.

2. https://www.thedrive.com/the-war-zone/24726/china-reveals-prototype-configuration-of-jam-resistant-and-counter-stealth-quantum-radar Even Chinese research papers they do not mention at all that their quantum radar is a photonic radar. And when they do mention photonic radars they do not mention it is a quantum radar.

3. If a quantum radar was to work there would be no use in applying stealth technology.

4. https://sciencing.com/how-to-calculate-signal-to-noise-ratio-13710251.html "

"For better or worse, unwanted noise is a naturally occurring and inescapable part of signals in all electronic circuits and transmitted radio waves. Every circuit component, from transistors to resistors to the wiring, is made up of atoms that vibrate randomly in response to ambient temperature; the random vibrations produce electrical noise. In the air, radio transmissions pass through an environment full of electromagnetic interference (EMI) from power lines, industrial equipment, the sun and many other sources. An electronics engineer wants to know, of the signal her equipment receives, how much is noise and how much is desired information."

https://www.edmundoptics.com/resources/trending-in-optics/photonic-electronic-integrated-circuits/

Conventional integrated circuits(MMICs) work by conducting electricity, or allowing electrons to flow easily through the circuit. Electrons are negatively charged subatomic particles that interact with other electrons as well as other particles. These interactions slow electrons down as they move through ICs, limit the amount of information that can be transmitted, and generate heat, which causes energy losses. A heat sink or other cooling technique is often required to regulate heat generation, otherwise the electrical components may become irreversibly damaged.

Photonic integrated circuits utilize photons, massless fundamental particles representing a quantum of light, instead of electrons. Photons move at the speed of light through the transmitting medium with almost no interference from other photons. This greatly increases the bandwidth and speed of the circuit while drastically reducing the amount of energy loss, making PICs more power efficient. With multiplexing techniques, an extremely large number of signals can be sent through a single-mode fiber that is orders of magnitude larger than the number of electrical signals that copper can transmit. A single fiber strand in a submarine transatlantic fiber optic cable can carry millions of simultaneous phone calls almost 100 km before needing amplification, and the amplifiers themselves are optically pumped lasers: no electronics involved.

https://weaponews.com/news/11884-kret-has-created-a-sample-of-photonic-radar-for-the-aircraft-of-the-6t.html

"Now the research is a full-fledged model of this radio-optical photonic antenna array, which will work out the characteristics of a production model". We understand what it (the radar) must be in any geometric size, on what bands and what power should work, he added. Kret also fulfills the technology specific elements of the new radar its emitter, photonic crystal, foster tract resonators. Serial sample locator do when we move to the stage of experimental design work (okr), for example, by order of the war department, said mikheyev. He explained that "Conventional radar station (radar) radiation is generated by vacuum-tube or semiconductor devices, the efficiency is relatively low – 30-40%". The remaining 60-70% of the energy is converted into heat. The new radar a radar signal is obtained by converting photonic crystal laser coherent energy in a microwave radiation.
This transmitter efficiency will be not less than 60-70%. That is a big part of laser energy will be converted into a radar, with the result that we can create a radar of high power, said the deputy director. The locator will not be a separate module in the nose of the aircraft, it will be a distributed system. Something similar can be seen today on the fifth generation fighter t-50 radar which operates in different bands and in different directions. In fact it is a single locator, but he exploded on the plane. It turns out about three or four different radars, which are comfortably placed around the fuselage and can simultaneously observe all the space around the aircraft, said mikheyev. Radiophony radar will be able to see, according to our estimates, far beyond the existing radar.

Radar signals are better received and interpreted using photonic radars over any MMIC radars. Using photonic radars you eliminate that noise inside your integrated circuits that interferes with the signal you are trying to receive and analyze on your radar screen. For example if you remove 20 decibels of noise the signal is better heard so instead of seeing a 1m2 target at 400kms away it turns out to be .01m2 from 400kms away instead.

https://mil.news.sina.com.cn/jssd/2019-05-01/doc-ihvhiqax6102967.shtml

"The official propaganda of the Russians is generally the same: the detection distance is too far, the energy conversion efficiency is as high as 60%, the traditional radar is only 30%, and the noise is 100 times lower than the conventional radar, which greatly improves the signal-to-noise ratio, and the theoretical detection distance for the stealth target. More than 500 kilometers!"

I have yet to find a source or confirmation from KRET or RTI to say how much noise is removed using photonic radars but if the Chinese are right here than this is some ground breaking technology.