Chinese Radar Developments - KLJ series and others

Here is the video of Nanjing Radar trade show
The Eighth World Radar Expo is taking place at Nanjing International Exhibition Center from June 14-16, in Nanjing City, east China's Jiangsu Province. The theme of the exhibition is "deep integration, technological innovation.” The radar type YLC-8B integrates the traditional detection method of mechanical scanning with advanced phased array technology, and is best known for being able to detect stealth aircraft. Fourth-generation air surveillance radars can be rapidly deployed and are powerful enough to detect some low-orbiting satellites.

Background story. It is not one but a series of radar making up a system
Posted: March 20, 2018 | Author: | Filed under: | Tags: , , , |
China is making progress in anti Stealh radar

Wu Jianqi, chief engineer of China’s anti-stealth radar. Photo from CCTV footage


CCTV aired its interview with Wu Jianqi, chief engineer of China’s anti-stealth radar, on March 18. Wu says that China has succeeded in developing its fourth-generation radar entirely independently and has thus become the only country in the world that has advanced meter-wave anti-stealth radar.

CCTV says that China displayed the radar at Zhuhai Airshow in 2016, which made Jane’s Defence Review comment in its report that China had become world leader in anti-stealth radar. In response, the US allocated a special fund of $2 billion for development of the capability to counter advanced meter-wave radar in its new-type jammer.

Source: mil.huanqiu.com “It’s him who has enabled Chinese radar to have anti-stealth capability” (summary by Chan Kai Yee based on the report in Chinese)



China’s anti-stealth radar. Global Times’ photo

Global Times give a description of China’s new 4th-generation anti-stealth radars displayed at Paris air show that has just closed this week.

China’s integrated anti-stealth radar systems of YLC-8B, SLC-7 and SLC-12 radars and JY-27A, JY-26 and JYL-1A radars can not only detect and accurately find the position of stealth aircrafts but also guide missiles to shoot down them.

As a result, F-22s and F-35s are utterly unable to come close to China’s coasts to attack China.

The above-mentioned anti-stealth radars represent world most advanced long-range radar technologies.

They mark the speedy application of the integration of the coordinate surveillance and combined active and passive monitoring technologies and intelligent minute processing technology

The integrated system of JY-27A, JY-26 and JYL-1A codenamed “Sky Guard” is based on the experience in shooting down US F-117A stealth fighter in 1999 with a meter-wave anti-stealth radar.

JY-27A is the newest meter-wave radar much more advanced than that used 20 years ago to shoot down F-117A. It is an all-round digital array active phased array radar with agile wave beam scanning and strong task scheduling and resources management capabilities, which make it a strong multi-task and multifunction radar with much greater maneuverability and reliability in carrying out its tasks.

It adopts a series of new technology such as super resolution height measuring that is commensurate with complicate topography, continuous vertical coverage of air space and integrated anti-jamming technology. Such technologies enable it to overcome the traditional shortcomings of meter-wave radar that fails to cover low elevation, monitor airspace continuously or to measure the height of a target.

JY-26 is a UHF-waveband long-range three dimension early warning and guiding radar with duel frequency and super large aperture anti-stealth capabilities. JYL-1A is a new-generation S-waveband multifunction and multi-task radar with integrated capabilities of air defense early warning, anti-missile early warning, gun position detection and adjustment and airspace control.

In the system of YLC-8B, SLC-7 and SLC-12 radars YLC-8B is the core. It works at UHF-waveband, which due to its long wavelength can be diffracted by a stealth aircraft. It is thus able to serve as air battle command system and weapon interception system and can provide air force with integrated information of the position, distance, height and friend-or-foe nature of any target. It has strong intelligence integration and independent guiding capabilities.

SLC-7 radar in the system works at L waveband and has the advantages of high accuracy and maneuverability while SLC-12 in the system works in S waveband and is able to detect various targets such as conventional and stealth targets, drones, cruise missiles, air-to-ground missiles, static missiles and rocket artillery with high measuring accuracy and ratio of data.

The three radars supplement one another to form an anti-stealth early warning and monitoring system that can not only ensure detection of stealth targets but also guide air defense system in conducting accurate strikes.

The system provide a anti-stealth solution with complete types and wavebands for international users.

In the airshow, China also promotes its YLC-29 passive surveillance radar system that can detect a stealth warplane through its reflection of civilian FM radio signals. It may supplement the above two systems.

Some readers may wonder, since the systems are able to deal with China’s J-20 and J-31 stealth fighter jets, why China provide them for international users. To enable them to shoot down China’s stealth fighter jets?

China’s J-20 and J-31 have been developed for defending its airspace especially against the bully from US stealth warplanes.

China has no intention to attack other countries with its stealth warplanes. Selling the systems to other countries will enable not only China to recover its development costs but also other countries to resist US bully.

Summary and comment by Chan Kai Yee on Global Times’ article in Chinese titled “Experts: China’s 4th generation anti-stealth radars represent world most advanced standards”, full text in Chinese can be found at .

From Henri K blog
According to the staff of the CETC Institute 14, the YLC-8B anti-stealth radar in the UHF band dedicated to export is able to detect a football-sized object (~ 0.04m2) on a distance of "several hundred kilometers".

Can they use older and current generation SAMs to successfully shoot down stealth planes using these radars? Or do they need modified current missiles or next gen missiles that use different directing techniques and stage the vectoring to home onto target? Claiming enthusiasm for J-20 and other Chinese stealth platforms that are being developed and then claiming effectiveness of these radars and selling them does not warrant the line "China has no interest in bullying others etc". In the endless cycle of new weapon and counter-measure, B-21 and PCA are probably being designed to meet counter-stealth methods and hardware. Russia and China have had many decades to counter existing US stealth so there's very good chance both nations possess very effective means to negate stealth advantages in most favourable defensive positions.

The reason China is pouring billions in pursuing and advancing both fields is to hedge, become an exporter of these technologies, and to develop the industries and know-how. Certainly not because it is not interested in invading others etc that is neither here nor there. Also these radars and missile systems that can be used for counter-stealth have not been proven in actual combat against highly classified US technologies and strategies. We can test them against small RCS flying drones simulating 0.0...1m^2 planes but we don't know strategies and actual combat parameters. J-20 and other Chinese stealth platforms are also developed to make good use of the clear advantages of stealth which dominates in most combat situations where defences are not always favourable. No nation can install a variety of anti-stealth radars and missiles on every inch of soil they want to defend. Nor can they definitely overcome decoy methods and weapons that are designed to fool all manners of SAM systems. Having successful anti-stealth radars that can 100% guide missiles for high hit probability still doesn't mean 100% effectiveness against stealth (I know most people realise this). All said and done, still good progress in the right direction. It's nice to know China is going for very comprehensive cover and exploring all possible war scenarios to minimise chances of being caught in unexpected developments if in an actual war. Betting everything on one strategy is certainly one way to lose a war.

several hundred km is a vague statement. But, lets say its somewhere between 300 and 500 km. Using golf ball sized rcs of 0.0015, and the relative difference in target distance between 0.04 rcs and 0.0015 rcs, as reported for some other radars (mainly russian radars, as no one else really gives out such info), i worked out that detection distance of 300-500 km against 0.04 rcs converts to some 120-200 km for 0.0015 rcs.
And no, i will not go into discussion of whether rcs of 0.0015 is relevant or in which situations it is relevant.

ougoah said:

Can they use older and current generation SAMs to successfully shoot down stealth planes using these radars? Or do they need modified current missiles or next gen missiles that use different directing techniques and stage the vectoring to home onto target? Claiming enthusiasm for J-20 and other Chinese stealth platforms that are being developed and then claiming effectiveness of these radars and selling them does not warrant the line "China has no interest in bullying others etc". In the endless cycle of new weapon and counter-measure, B-21 and PCA are probably being designed to meet counter-stealth methods and hardware. Russia and China have had many decades to counter existing US stealth so there's very good chance both nations possess very effective means to negate stealth advantages in most favourable defensive positions.

The reason China is pouring billions in pursuing and advancing both fields is to hedge, become an exporter of these technologies, and to develop the industries and know-how. Certainly not because it is not interested in invading others etc that is neither here nor there. Also these radars and missile systems that can be used for counter-stealth have not been proven in actual combat against highly classified US technologies and strategies. We can test them against small RCS flying drones simulating 0.0...1m^2 planes but we don't know strategies and actual combat parameters. J-20 and other Chinese stealth platforms are also developed to make good use of the clear advantages of stealth which dominates in most combat situations where defences are not always favourable. No nation can install a variety of anti-stealth radars and missiles on every inch of soil they want to defend. Nor can they definitely overcome decoy methods and weapons that are designed to fool all manners of SAM systems. Having successful anti-stealth radars that can 100% guide missiles for high hit probability still doesn't mean 100% effectiveness against stealth (I know most people realise this). All said and done, still good progress in the right direction. It's nice to know China is going for very comprehensive cover and exploring all possible war scenarios to minimise chances of being caught in unexpected developments if in an actual war. Betting everything on one strategy is certainly one way to lose a war.

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Well China geography more or less decide where to put those radar . From the north is almost impossible as Russia has their own formidable anti stealth radar and interceptor. From the south it has to get Indian permission and I am certain India does not want to get involve in helping to attack China . The same argument can be made for any incursion from the west.

So the only avenue open is from the sea in the east. Few years ago SOC did some study on this subject and using commercial satellite, he conclude that China has anti air radar coverage almost all of the eastern and south eastern sea board So I have no doubt that they are working now to provide anti stealth radar coverage for the whole eastern seaboard!
As it so happened Eastern sea board is where most of China industrial bases located

Of course nobody is saying that there might not be leaker But you can have enough anti stealth radar for all the most important installation to allow it for retaliatory strike

Lets do rough calc her using google map
Assuming the length of China coast line say 2000 mile and assuming the radius of radar is 100 mile than you need 2000/(2X100)=10 or 12 battery of anti Stealth radar which is affordable to China

Hendrik_2000 said:

From the south it has to get Indian permission and I am certain India does not want to get involve in helping to attack China

Click to expand...

What?

sequ said:

What?

Click to expand...

Doing that will only imperil India existence Anyway this stealth thing has only short shelve life Progress is being made to developed Quantum radar according to SCMP

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Posted: June 16, 2018 | Author: | Filed under: | Tags: , , , |
On December 16, 2016, I had a post titled “China’s Great Progress in Quantum Radar to Detect Stealth Warplane” on Chinese State-owned China Electronics Technology Group Corporation (CETC)’s success in developing a quantum radar with the range of 100km, five times of the potential range of an overseas prototype.

Conventional radar beams radio wave and measure the wave bounced back to detect and track fighter jets. Stealth jets use the technology to reduce the radio wave bounced back to avoid detection by conventional radar.

Unlike conventional radar, quantum radar beams photons and measure the photons bounced back. As stealth jets cannot reduce the photons bounced back, they are easily detected and tracked by quantum radar.

Due to quantum radar’s ability to detect stealth jets, there is much interest in the world in developing quantum radar.

However, there is a major problem: the number of photons bounced back diminishes as the distance of the target increases so that the range of such radar is limited.

Today, SCMP says in its report “China’s latest quantum radar won’t just track stealth bombers, but ballistic missiles in space too” that according to CETC, quantum radar could “effectively monitor high-speed flying objects in the upper atmosphere and above.” CETC means that the radar can monitor ICBMs and SLBMs.

However, ICBMs have to be detected soon after they have entered upper atmosphere and above or there will be no time to intercept them due to their ver high speed. That is why the company said that the radar had to be installed on a near-space vehicle. Due to thin or no atmosphere in near space the number of photons bounced back does not decrease so seriously.

Then ideally the radar has to be installed on a space station but no country can install its quantum radar on the international space station as it does not have exclusive use of the station. China will soon establish its exclusive space station. It seems that when China has developed a quantum radar and installed on its space station, China will have the best missile defense in the world.

Comment by Chan Kai Yee on SCMP’s report, full text of which can be found at .

I am surprised that any country would would take it's neighbors opinions into consideration when placing radars within it's own territory. Especially not a country like China.

I call it BS

If we take the highest value 500 km for a 0.04 m^2 target then,

0.04 m^2 >> 500 km
0.0015 m^2 (F-35 extreme) >> 220+ km

0.04 m^2 >> 500 km
0.0001 m^2 (F-22 extreme) >> 110+ km

Values (0.0001 and 0.0015) for the F-22 and F-35 are essetiallly perfect values under the most ideal conditions. From different angles or when the aircraft is maneuvering those values will spike.