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ANALYSIS Based on PAKFA new KRET Radar Detection of Aircraft at 500 KM

PARIKRAMA

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ANALYSIS Based on PAKFA new KRET Radar Detection of Aircraft at 500 KM

++
NEWS
Russian fighter 5 th generation can get "future radar"

Российский истребитель 5-го поколения может получить "радар будущего" | РИА Новости

The new radar is based on the use of radio-optical phased arrays, thereby reducing the weight of the radar twice, and the resolution of the increase tenfold.

MOSCOW, December 30 - RIA Novosti. The Russian fifth-generation fighter PAK FA (T-50) can be equipped with is developing in the Russian radar, based on the use of radio-optical phased arrays (ROFAR), adviser of the first deputy general director of Concern "Radio-electronic technology '( KRET, ROFAR software company, is a "Rostec") Vladimir Mikheev.

Photonic technology greatly expand the possibilities of communication and radar ─ their weight decreased by more than half, and the resolution will increase tenfold. Ultra-wideband signal ROFAR allows you to get virtually the TV picture in the radar range. Radiofotoniki technology, in particular, should open up new opportunities for improvement "smart skin" on Russian airplanes and helicopters of the latest generation.


"The output of our work on ROFAR will get a full list of aircraft - manned and unmanned - which we plan to offer equipped with radar-based radio-optical phased arrays. I think that the PAK FA will also be on this list and it will be given to specific proposals "- said Mikheyev reporters, adding that the final decision will take the Department of Defense.

The project ROFAR based KRET laboratory was established radiofotoniki. Concern has already begun to laboratory tests to create ROFAR. Designed for 4.5 years the work is on schedule, which was agreed with the Foundation for Advanced Studies. As reported in November, RIA Novosti deputy general director Igor KRET Nasenkov, the company intends to establish a full-scale sample of the future radar until 2018.

T-50 (PAK FA project) - Russia's fifth-generation aircraft equipped with a fundamentally new avionics, and promising radar with a phased antenna array. The first flight took place in 2010 in Komsomolsk-on-Amur, the first public demonstration of a fighter - in 2011 at the Aviation and Space Salon MAKS in Zhukovsky near Moscow.

KRET was established in 2009. The main directions of its activity - development and production of complex systems and avionics for civil and military aircraft, radar airborne, the state identification, electronic warfare systems, instrumentation for various applications, electrical connectors, connectors and cable assemblies. Among the developments KRET - a family of ground-based electronic warfare "Krasuha" aircraft systems group and individual protection "Khibiny", "Vitebsk" and "Arm-AB" mobile small-sized radar "harmony."

KRET new radar will be able to look into the aircraft at a distance of 500 km


КРЭТ: новые радары смогут заглянуть в самолет на удалении 500 км | РИА Новости

Radio optical phased arrays significantly extend the capabilities of modern communication and radar - their weight decreased by more than half, and the resolution will increase tenfold.

"ROFAR allow us to see the plane, located 500 kilometers away, as if we are standing 50 meters away from him at the airport, his portrait in the baseband. Moreover, if needed, this technology will look in the aircraft itself, to know what kind of people and Appliances are there, because the signal can pass any obstacles, even lead-meter wall, "- he said Mikheyev told reporters.


++
ANALYSIS

Assuming that 500 km is detection of a standard RCS cases (assumed in details below) then -
It is apparent that radar is solely designed to detect F22 at max range.. F22 being a VLO bird indicates a RCS in the range of 0.00016 m2 unconfirmed (size of a marble).

Using the age old equation and a small work in excel i had tried to find out the maximum potential of such a radars claim in scenario as described below

The work out
  • Four cases are considered for 500 km detection claims
  • Case 1 having RCS 20 m2
  • Case 2 having RCS 10m2
  • Case 3 having RCS 5m2
  • Case 4 having RCS 3m2
  • The idea is is to understand how a bigger jet RCS of 20m2 of older flankers to modern standard RCS 3m2 detection for Su35 like flankers will influence what kind of detection range for VLO and LO birds
  • In this case the Range 500km is taken as R1
  • The four cases (case 1, Case 2, Case 3, Case 4) are taken as RCS1
  • RCS 2 is basically a range of RCS taken from 0.000010 m2 to 1m2
  • Note that unconfirmed figures suggest the following for most modern stealth jets
    • F22 at 0.00016 m2 (in yellow)
    • F35 at 0.001 m2 (in green)
    • LO jets at 0.1m2 (in blue)
  • R2 is the range of detection for such RCS 2
  • Below is the excel workout
PAKFA RADAR RANGE.jpg



Observations
Pls note i am considering here purely from the perspective of PAKFA detection and engagement.
  1. F22 case : As you can see the best case of detection range is in between 26.59 km to 42.73 km. Enough for either a WVR engagement (unlikely as F22 may turn around , go max thrusters/after burners and move out of detection range) or a BVR missile to ensure that inspite of escaping the missile can try and intercept uptill the max NEZ with higher Kp probability,
  2. F35 case: Detection range varies from 42.04 km to 67.56 km. Its enough for a BVR engagement but with lesser speed than F22, the chances of escaping in terms of probability is lower than F22
  3. LO Jets: This may be the case of Rafales and EFTs. The detection range is very high at 132.96 km to 213.64 km. 5th Gen gap over 4.5+ Gen can make this more wider in terms of missiles and engagements.
  4. A quick observation does suggest PAKFA is very much vulnerable to F22 if the radar of F22 can detect it earlier and engage a BVR.
  5. It is safe to assume F35 may not provide a similar challenge as F22 owing to its speed and RCS being inferior to F22
Compiling the data in graphical form here is the representation

PAKFA RADAR RANGE 1.png


As described above the four cases and how the RCS from minimalist to maximalist is detected by the radar of PAKFA is hereby plotted above.

@Vauban @WAJsal @Icarus @MilSpec @AUSTERLITZ @SpArK @Abingdonboy @Levina @knight11 @anant_s @SR-91 @Capt.Popeye @Oscar @vostok @others

Pls add your comments. In case of more changes do suggest so that i can rework and re present it here.
 
Last edited:

Perpendicular

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F22 case : As you can see the best case of detection range is in between 26.59 km to 42.73 km. Enough for either a WVR engagement (unlikely as F22 may turn around , go max thrusters/after burners and move out of detection range) or a BVR missile to ensure that inspite of escaping the missile can try and intercept uptill the max NEZ with higher Kp probability,
Well it looks like eventually the future is not trying to make planes invisible but to make planes that can pull out more G's, more ECM's.
 

PARIKRAMA

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Could this be the world's very first anti-stealth radar?
Theoretically yes among the Aerial radars but practically NO
The biggest limitation that i have not considered in this analysis is as under
  1. Radar Stealth consideration of RCS from Frontal aspect which may classify the aircraft as LO but from other aspects it may not be.
  2. IR stealth detection via IRST. IR signature are higher for jets which uses Single engine but much higher thrust (F35 single engine but dry thrust is more like twin engined bird). A bird which has exhaust cooling tech can evade such IRST based detection
  3. Jamming probability or Differences in radar and radar signal processing - This can reduce the true extent of detection to a level where the incoming fighter can have a much higher kill shot probability
  4. The extent of RAM painting evolution in terms of technology where we dont know how much advancement has been actually made to reduce the extent of RCS even further
 

Indian Jatt

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It would be interesting to see how IAF reacts to this development, it is better to wait for it, by 2022 PAKFA could mature beyond IAF's imagination and maybe IAF would be able to face future enemy fighters....this new radar can be decisive in an aerial wars
 

MilSpec

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great post,
how will the radar differentiate between a VLO bogey and noise?

ANALYSIS Based on PAKFA new KRET Radar Detection of Aircraft at 500 KM

++
NEWS
Russian fighter 5 th generation can get "future radar"

Российский истребитель 5-го поколения может получить "радар будущего" | РИА Новости

The new radar is based on the use of radio-optical phased arrays, thereby reducing the weight of the radar twice, and the resolution of the increase tenfold.

MOSCOW, December 30 - RIA Novosti. The Russian fifth-generation fighter PAK FA (T-50) can be equipped with is developing in the Russian radar, based on the use of radio-optical phased arrays (ROFAR), adviser of the first deputy general director of Concern "Radio-electronic technology '( KRET, ROFAR software company, is a "Rostec") Vladimir Mikheev.

Photonic technology greatly expand the possibilities of communication and radar ─ their weight decreased by more than half, and the resolution will increase tenfold. Ultra-wideband signal ROFAR allows you to get virtually the TV picture in the radar range. Radiofotoniki technology, in particular, should open up new opportunities for improvement "smart skin" on Russian airplanes and helicopters of the latest generation.


"The output of our work on ROFAR will get a full list of aircraft - manned and unmanned - which we plan to offer equipped with radar-based radio-optical phased arrays. I think that the PAK FA will also be on this list and it will be given to specific proposals "- said Mikheyev reporters, adding that the final decision will take the Department of Defense.

The project ROFAR based KRET laboratory was established radiofotoniki. Concern has already begun to laboratory tests to create ROFAR. Designed for 4.5 years the work is on schedule, which was agreed with the Foundation for Advanced Studies. As reported in November, RIA Novosti deputy general director Igor KRET Nasenkov, the company intends to establish a full-scale sample of the future radar until 2018.

T-50 (PAK FA project) - Russia's fifth-generation aircraft equipped with a fundamentally new avionics, and promising radar with a phased antenna array. The first flight took place in 2010 in Komsomolsk-on-Amur, the first public demonstration of a fighter - in 2011 at the Aviation and Space Salon MAKS in Zhukovsky near Moscow.

KRET was established in 2009. The main directions of its activity - development and production of complex systems and avionics for civil and military aircraft, radar airborne, the state identification, electronic warfare systems, instrumentation for various applications, electrical connectors, connectors and cable assemblies. Among the developments KRET - a family of ground-based electronic warfare "Krasuha" aircraft systems group and individual protection "Khibiny", "Vitebsk" and "Arm-AB" mobile small-sized radar "harmony."

KRET new radar will be able to look into the aircraft at a distance of 500 km


КРЭТ: новые радары смогут заглянуть в самолет на удалении 500 км | РИА Новости

Radio optical phased arrays significantly extend the capabilities of modern communication and radar - their weight decreased by more than half, and the resolution will increase tenfold.

"ROFAR allow us to see the plane, located 500 kilometers away, as if we are standing 50 meters away from him at the airport, his portrait in the baseband. Moreover, if needed, this technology will look in the aircraft itself, to know what kind of people and Appliances are there, because the signal can pass any obstacles, even lead-meter wall, "- he said Mikheyev told reporters.


++
ANALYSIS

Assuming that 500 km is detection of a standard RCS cases (assumed in details below) then -
It is apparent that radar is solely designed to detect F22 at max range.. F22 being a VLO bird indicates a RCS in the range of 0.00016 m2 unconfirmed (size of a marble).

Using the age old equation and a small work in excel i had tried to find out the maximum potential of such a radars claim in scenario as described below

The work out
  • Four cases are considered for 500 km detection claims
  • Case 1 having RCS 20 m2
  • Case 2 having RCS 10m2
  • Case 3 having RCS 5m2
  • Case 4 having RCS 3m2
  • The idea is is to understand how a bigger jet RCS of 20m2 of older flankers to modern standard RCS 3m2 detection for Su35 like flankers will influence what kind of detection range for VLO and LO birds
  • In this case the Range 500km is taken as R1
  • The four cases (case 1, Case 2, Case 3, Case 4) are taken as RCS1
  • RCS 2 is basically a range of RCS taken from 0.000010 m2 to 1m2
  • Note that unconfirmed figures suggest the following for most modern stealth jets
    • F22 at 0.00016 m2 (in yellow)
    • F35 at 0.001 m2 (in green)
    • LO jets at 0.1m2 (in blue)
  • R2 is the range of detection for such RCS 2
  • Below is the excel workout
View attachment 283973


Observations
Pls note i am considering here purely from the perspective of PAKFA detection and engagement.
  1. F22 case : As you can see the best case of detection range is in between 26.59 km to 42.73 km. Enough for either a WVR engagement (unlikely as F22 may turn around , go max thrusters/after burners and move out of detection range) or a BVR missile to ensure that inspite of escaping the missile can try and intercept uptill the max NEZ with higher Kp probability,
  2. F35 case: Detection range varies from 42.04 km to 67.56 km. Its enough for a BVR engagement but with lesser speed than F22, the chances of escaping in terms of probability is lower than F22
  3. LO Jets: This may be the case of Rafales and EFTs. The detection range is very high at 132.96 km to 213.64 km. 5th Gen gap over 4.5+ Gen can make this more wider in terms of missiles and engagements.
  4. A quick observation does suggest PAKFA is very much vulnerable to F22 if the radar of F22 can detect it earlier and engage a BVR.
  5. It is safe to assume F35 may not provide a similar challenge as F22 owing to its speed and RCS being inferior to F22
Compiling the data in graphical form here is the representation

View attachment 283972

As described above the four cases and how the RCS from minimalist to maximalist is detected by the radar of PAKFA is hereby plotted above.

@Vauban @WAJsal @Icarus @MilSpec @AUSTERLITZ @SpArK @Abingdonboy @Levina @knight11 @anant_s @SR-91 @Capt.Popeye @Oscar @vostok @others

Pls add your comments. In case of more changes do suggest so that i can rework and re present it here.
 

sathya

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It would be interesting to see how IAF reacts to this development, it is better to wait for it, by 2022 PAKFA could mature beyond IAF's imagination and maybe IAF would be able to face future enemy fighters....this new radar can be decisive in an aerial wars
Are they offering it to us ?
AESA only ?
 

PARIKRAMA

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great post,
how will the radar differentiate between a VLO bogey and noise?
As with the most modern radars, Since PAKFA will have a cutting edge radar , i am assuming it to be highly sensitive in nature of reception. This does creates a situation when the detection of a VLO bogey and noise can interfere and creation of a false alarm.
Thankfully, the processing capabilities and algorithms in PAKFA would also be first of its kind and far more advanced.

IMHO, PAKFA would use a full fledged faster processing software defined radar.In this configuration, the hardware of the radar remains the same, but the reception data from this radar hardware is processed by a software controlled stage where the acting on the prevalent environmental conditions are important, which are the atmospheric attenuation, noise clutter, terrain masking and electronic order of battle.
  • The goal is signal “purity” where most of the energy is concentrated close to the nominal design frequency, which makes it possible to detect very small Doppler shifts in returns from moving targets.
  • New processing technologies include “multiple hypothesis” tracking in which weak returns which are whether detection of say VLO range or just noise and are analyzed over time (in multiple seconds) and either declared as tracked bogey or discarded based on the behavior of analysis.
  • Add to that the new processing unit uses advanced signal processing techniques (along with multiple hypothesis) which reduces further the probability of false alarm via noise.
How that can done
  • This can be done simply by detection (whether its a bogey or noise) being not declared until it has been detected many times, as in the track-before-detect method.
  • A lower threshold is initially applied and when a detection occurs the radar beam revisits the same spot with a higher threshold as in the alert-confirm method.
  • Simply this means that the probability of detection can be increased by signal processing methods.
  • And add to that all these attempts of detection happening over just few seconds.


Assimilation of Information and Processing
It would be prudent to say if PAKFA uses multiple methods like its radar, IRST, IR sensitivity, its intelligent skin etc in all togetherness, it does provide a multiple avenue of a bogey confirmation. The amount of data this methodology does create a far better situation awareness. What needs to be seen is that F35 also uses a similar concept of a full fledged situation awareness but limits its other capabilities which allows it more "time" for processing such inputs. Thereby F35 becomes more of a "director" and other jets becomes "actor".
As PAKFA is designed more for "Actor" role, i believe its director role will be a bit quasi in nature meaning hybird director-actor types. With Russian design and no compromise on the fighter's capability, smart skin sensitivity and processing abilities and software based radar will actually define how really effective this radar capability is..
 

Levina

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ANALYSIS Based on PAKFA new KRET Radar Detection of Aircraft at 500 KM

++
NEWS
Russian fighter 5 th generation can get "future radar"

Российский истребитель 5-го поколения может получить "радар будущего" | РИА Новости

The new radar is based on the use of radio-optical phased arrays, thereby reducing the weight of the radar twice, and the resolution of the increase tenfold.

MOSCOW, December 30 - RIA Novosti. The Russian fifth-generation fighter PAK FA (T-50) can be equipped with is developing in the Russian radar, based on the use of radio-optical phased arrays (ROFAR), adviser of the first deputy general director of Concern "Radio-electronic technology '( KRET, ROFAR software company, is a "Rostec") Vladimir Mikheev.

Photonic technology greatly expand the possibilities of communication and radar ─ their weight decreased by more than half, and the resolution will increase tenfold. Ultra-wideband signal ROFAR allows you to get virtually the TV picture in the radar range. Radiofotoniki technology, in particular, should open up new opportunities for improvement "smart skin" on Russian airplanes and helicopters of the latest generation.


"The output of our work on ROFAR will get a full list of aircraft - manned and unmanned - which we plan to offer equipped with radar-based radio-optical phased arrays. I think that the PAK FA will also be on this list and it will be given to specific proposals "- said Mikheyev reporters, adding that the final decision will take the Department of Defense.

The project ROFAR based KRET laboratory was established radiofotoniki. Concern has already begun to laboratory tests to create ROFAR. Designed for 4.5 years the work is on schedule, which was agreed with the Foundation for Advanced Studies. As reported in November, RIA Novosti deputy general director Igor KRET Nasenkov, the company intends to establish a full-scale sample of the future radar until 2018.

T-50 (PAK FA project) - Russia's fifth-generation aircraft equipped with a fundamentally new avionics, and promising radar with a phased antenna array. The first flight took place in 2010 in Komsomolsk-on-Amur, the first public demonstration of a fighter - in 2011 at the Aviation and Space Salon MAKS in Zhukovsky near Moscow.

KRET was established in 2009. The main directions of its activity - development and production of complex systems and avionics for civil and military aircraft, radar airborne, the state identification, electronic warfare systems, instrumentation for various applications, electrical connectors, connectors and cable assemblies. Among the developments KRET - a family of ground-based electronic warfare "Krasuha" aircraft systems group and individual protection "Khibiny", "Vitebsk" and "Arm-AB" mobile small-sized radar "harmony."

KRET new radar will be able to look into the aircraft at a distance of 500 km


КРЭТ: новые радары смогут заглянуть в самолет на удалении 500 км | РИА Новости

Radio optical phased arrays significantly extend the capabilities of modern communication and radar - their weight decreased by more than half, and the resolution will increase tenfold.

"ROFAR allow us to see the plane, located 500 kilometers away, as if we are standing 50 meters away from him at the airport, his portrait in the baseband. Moreover, if needed, this technology will look in the aircraft itself, to know what kind of people and Appliances are there, because the signal can pass any obstacles, even lead-meter wall, "- he said Mikheyev told reporters.


++
ANALYSIS

Assuming that 500 km is detection of a standard RCS cases (assumed in details below) then -
It is apparent that radar is solely designed to detect F22 at max range.. F22 being a VLO bird indicates a RCS in the range of 0.00016 m2 unconfirmed (size of a marble).

Using the age old equation and a small work in excel i had tried to find out the maximum potential of such a radars claim in scenario as described below

The work out
  • Four cases are considered for 500 km detection claims
  • Case 1 having RCS 20 m2
  • Case 2 having RCS 10m2
  • Case 3 having RCS 5m2
  • Case 4 having RCS 3m2
  • The idea is is to understand how a bigger jet RCS of 20m2 of older flankers to modern standard RCS 3m2 detection for Su35 like flankers will influence what kind of detection range for VLO and LO birds
  • In this case the Range 500km is taken as R1
  • The four cases (case 1, Case 2, Case 3, Case 4) are taken as RCS1
  • RCS 2 is basically a range of RCS taken from 0.000010 m2 to 1m2
  • Note that unconfirmed figures suggest the following for most modern stealth jets
    • F22 at 0.00016 m2 (in yellow)
    • F35 at 0.001 m2 (in green)
    • LO jets at 0.1m2 (in blue)
  • R2 is the range of detection for such RCS 2
  • Below is the excel workout
View attachment 283973


Observations
Pls note i am considering here purely from the perspective of PAKFA detection and engagement.
  1. F22 case : As you can see the best case of detection range is in between 26.59 km to 42.73 km. Enough for either a WVR engagement (unlikely as F22 may turn around , go max thrusters/after burners and move out of detection range) or a BVR missile to ensure that inspite of escaping the missile can try and intercept uptill the max NEZ with higher Kp probability,
  2. F35 case: Detection range varies from 42.04 km to 67.56 km. Its enough for a BVR engagement but with lesser speed than F22, the chances of escaping in terms of probability is lower than F22
  3. LO Jets: This may be the case of Rafales and EFTs. The detection range is very high at 132.96 km to 213.64 km. 5th Gen gap over 4.5+ Gen can make this more wider in terms of missiles and engagements.
  4. A quick observation does suggest PAKFA is very much vulnerable to F22 if the radar of F22 can detect it earlier and engage a BVR.
  5. It is safe to assume F35 may not provide a similar challenge as F22 owing to its speed and RCS being inferior to F22
Compiling the data in graphical form here is the representation

View attachment 283972

As described above the four cases and how the RCS from minimalist to maximalist is detected by the radar of PAKFA is hereby plotted above.

@Vauban @WAJsal @Icarus @MilSpec @AUSTERLITZ @SpArK @Abingdonboy @Levina @knight11 @anant_s @SR-91 @Capt.Popeye @Oscar @vostok @others

Pls add your comments. In case of more changes do suggest so that i can rework and re present it here.

Men!!!:tsk:
Why do guys always think of destruction???
I do not understand much about fighter jets but I am sure that this mind blowing technology of photonics radar can be used in myriads of civilian equipments.
Just imagine what happens if such "radar vision" (your article said it gives a TV like picture) is used in high speed trains?
Trains will be able to spot obstacles, miles in advance and
voila!! No more collisions and accidents.
(I read about it!!).
image.jpeg




But I also doubt that radio-optic phased array technology will be soon be used in drones. And that would be perilous!

Btw Russians are far behind western world when it comes to microelectronics. Switching from electrons to photons might not come so easy to them...or so I think. Lol
Till I read your article the only purpose of phased array that I knew was in transmission of radio channels (AM & FM), thanks to you now I know fighter jets also use this technology. But TV like picture still makes me skittish. :O

Thanks for the tag!!!
Great thread!! :tup:
Here's wishing you a happy and prosperous new year. :-)
 
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knight11

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ANALYSIS Based on PAKFA new KRET Radar Detection of Aircraft at 500 KM

++
NEWS
Russian fighter 5 th generation can get "future radar"

Российский истребитель 5-го поколения может получить "радар будущего" | РИА Новости

The new radar is based on the use of radio-optical phased arrays, thereby reducing the weight of the radar twice, and the resolution of the increase tenfold.

MOSCOW, December 30 - RIA Novosti. The Russian fifth-generation fighter PAK FA (T-50) can be equipped with is developing in the Russian radar, based on the use of radio-optical phased arrays (ROFAR), adviser of the first deputy general director of Concern "Radio-electronic technology '( KRET, ROFAR software company, is a "Rostec") Vladimir Mikheev.

Photonic technology greatly expand the possibilities of communication and radar ─ their weight decreased by more than half, and the resolution will increase tenfold. Ultra-wideband signal ROFAR allows you to get virtually the TV picture in the radar range. Radiofotoniki technology, in particular, should open up new opportunities for improvement "smart skin" on Russian airplanes and helicopters of the latest generation.


"The output of our work on ROFAR will get a full list of aircraft - manned and unmanned - which we plan to offer equipped with radar-based radio-optical phased arrays. I think that the PAK FA will also be on this list and it will be given to specific proposals "- said Mikheyev reporters, adding that the final decision will take the Department of Defense.

The project ROFAR based KRET laboratory was established radiofotoniki. Concern has already begun to laboratory tests to create ROFAR. Designed for 4.5 years the work is on schedule, which was agreed with the Foundation for Advanced Studies. As reported in November, RIA Novosti deputy general director Igor KRET Nasenkov, the company intends to establish a full-scale sample of the future radar until 2018.

T-50 (PAK FA project) - Russia's fifth-generation aircraft equipped with a fundamentally new avionics, and promising radar with a phased antenna array. The first flight took place in 2010 in Komsomolsk-on-Amur, the first public demonstration of a fighter - in 2011 at the Aviation and Space Salon MAKS in Zhukovsky near Moscow.

KRET was established in 2009. The main directions of its activity - development and production of complex systems and avionics for civil and military aircraft, radar airborne, the state identification, electronic warfare systems, instrumentation for various applications, electrical connectors, connectors and cable assemblies. Among the developments KRET - a family of ground-based electronic warfare "Krasuha" aircraft systems group and individual protection "Khibiny", "Vitebsk" and "Arm-AB" mobile small-sized radar "harmony."

KRET new radar will be able to look into the aircraft at a distance of 500 km


КРЭТ: новые радары смогут заглянуть в самолет на удалении 500 км | РИА Новости

Radio optical phased arrays significantly extend the capabilities of modern communication and radar - their weight decreased by more than half, and the resolution will increase tenfold.

"ROFAR allow us to see the plane, located 500 kilometers away, as if we are standing 50 meters away from him at the airport, his portrait in the baseband. Moreover, if needed, this technology will look in the aircraft itself, to know what kind of people and Appliances are there, because the signal can pass any obstacles, even lead-meter wall, "- he said Mikheyev told reporters.


++
ANALYSIS

Assuming that 500 km is detection of a standard RCS cases (assumed in details below) then -
It is apparent that radar is solely designed to detect F22 at max range.. F22 being a VLO bird indicates a RCS in the range of 0.00016 m2 unconfirmed (size of a marble).

Using the age old equation and a small work in excel i had tried to find out the maximum potential of such a radars claim in scenario as described below

The work out
  • Four cases are considered for 500 km detection claims
  • Case 1 having RCS 20 m2
  • Case 2 having RCS 10m2
  • Case 3 having RCS 5m2
  • Case 4 having RCS 3m2
  • The idea is is to understand how a bigger jet RCS of 20m2 of older flankers to modern standard RCS 3m2 detection for Su35 like flankers will influence what kind of detection range for VLO and LO birds
  • In this case the Range 500km is taken as R1
  • The four cases (case 1, Case 2, Case 3, Case 4) are taken as RCS1
  • RCS 2 is basically a range of RCS taken from 0.000010 m2 to 1m2
  • Note that unconfirmed figures suggest the following for most modern stealth jets
    • F22 at 0.00016 m2 (in yellow)
    • F35 at 0.001 m2 (in green)
    • LO jets at 0.1m2 (in blue)
  • R2 is the range of detection for such RCS 2
  • Below is the excel workout
View attachment 283973


Observations
Pls note i am considering here purely from the perspective of PAKFA detection and engagement.
  1. F22 case : As you can see the best case of detection range is in between 26.59 km to 42.73 km. Enough for either a WVR engagement (unlikely as F22 may turn around , go max thrusters/after burners and move out of detection range) or a BVR missile to ensure that inspite of escaping the missile can try and intercept uptill the max NEZ with higher Kp probability,
  2. F35 case: Detection range varies from 42.04 km to 67.56 km. Its enough for a BVR engagement but with lesser speed than F22, the chances of escaping in terms of probability is lower than F22
  3. LO Jets: This may be the case of Rafales and EFTs. The detection range is very high at 132.96 km to 213.64 km. 5th Gen gap over 4.5+ Gen can make this more wider in terms of missiles and engagements.
  4. A quick observation does suggest PAKFA is very much vulnerable to F22 if the radar of F22 can detect it earlier and engage a BVR.
  5. It is safe to assume F35 may not provide a similar challenge as F22 owing to its speed and RCS being inferior to F22
Compiling the data in graphical form here is the representation

View attachment 283972

As described above the four cases and how the RCS from minimalist to maximalist is detected by the radar of PAKFA is hereby plotted above.

@Vauban @WAJsal @Icarus @MilSpec @AUSTERLITZ @SpArK @Abingdonboy @Levina @knight11 @anant_s @SR-91 @Capt.Popeye @Oscar @vostok @others

Pls add your comments. In case of more changes do suggest so that i can rework and re present it here.
Great post post the whole post in pakfa/fgfa sticky thread. You are my man parikrama thums up !!
 

SpArK

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Men!!!:tsk:
Why do guys always think of destruction???
I do not understand much about fighter jets but I am sure that this mind blowing technology of photonics radar can be used in myriads of civilian equipments.
Just imagine what happens if such "radar vision" (your article said it gives a TV like picture) is used in high speed trains?
Trains will be able to spot obstacles, miles in advance and
voila!! No more collisions and accidents.

But I also doubt that radio-optic phased array technology will be soon be used in drones. And that would be perilous!

Btw Russians are far behind western world when it comes to microelectronics. Switching from electrons to photons might not come so easy to them...or so I think. Lol
Till I read your article the only purpose of phased array that I knew was in transmission of radio channels (AM & FM), thanks to you now I know fighter jets also use this technology. But TV like picture still makes me skittish. :O

Thanks for the tag!!! :)
Here's wishing you a happy and prosperous new year. :-)


Yeah, the train will detect hundreds of buildings,thousands of people, cars, crows on tracks, and the things which are nearby since the radar will be pointing straight at ground level..........unlike the airbourne fighter where obstacles are next to nill.

What a brilliant thought.


Women !!!!!:tsk:
 

The Huskar

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Russia was far behind its western counterparts on introduction of phased array radars and I have serious doubts about its advancement in photonics.Not to say that they won't achieve it but making it commercially viable by 2022 seems a tall ordeal.And oberserving the fact that military budget is going to slashed till oil prices recover,Russia may very well curb its R&D on unique technology and go for attenuation of time tested ones.
 

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