Chinese Radar Developments - KLJ series and others


Hendrik_2000

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Microwave photonics-based radar imaging chip the size of a sand grain successfully developed and applied to high-resolution (1.3cm) imaging radar

China's microwave photon radar imaging resolution technology has reached the international leading

2019-04-28 22:35:59

source : Technology Daily

News April 27th news, "We have developed a microwave photon radar imaging chip, as small as sand, 10,000 times smaller than traditional radar equipment. It can be used not only in the security field, but also in driverless cars. On April 27th, at the 2019 National Microwave Photonic Radar Technology Symposium, Pan Shilong, deputy dean of the School of Electronics and Information Engineering of Nanjing University of Aeronautics and Astronautics and deputy director of the Ministry of Education of Radar Imaging and Microwave Photonics Technology, told reporters China has made great progress in the field of microwave photonic radar technology. The resolution of imaging radar is 1.3 cm, which is ahead of other countries.

Microwave photon technology is considered by the United States, Russia, and Europe as the key technology to determine the "future battlefield advantage." Microwave photonics is a photon technology that performs complex, even incomplete, signal generation, processing, transmission, and control functions in microwave, millimeter-wave, and THz wave systems.

Microwave photonic radar can effectively improve the target performance, range and response speed of the radar system by using photon technology, which is helpful for the integration of reconnaissance, interference, detection and communication.



Real-time imaging UAV low-flying action figure
(Real-time motion imaging of a small UAV flying at low altitude)


"Microwave photonic radar has large bandwidth and can support multi-band and multi-signal cooperation to achieve high-resolution imaging, multi-target recognition and low RCS target detection. At the same time, it can significantly improve the signal-to-noise ratio and improvement factor, and greatly improve the strong clutter. The ability to detect weak signals can generate and process signal waveforms that adapt to various complex environments and expand the degree of freedom of signals.” Yan De, an academician of the Chinese Academy of Engineering and dean of the School of Electronic Information Engineering of China Southern Airlines, believes that its advantages are obvious, “such as 1 Gigabit to 100 Gigabit is the frequency band for microwave photon radar operation. Existing radars seem to be incapable of this band.”

At present, the United States, Russia, and the European Union are conducting research on practical microwave photonic radar. In China, represented by the Chinese Academy of Sciences and Nanjing Aerospace University, many universities and research institutes have carried out a series of key technical research and exploration. The preliminary techniques of photon arbitrary waveform generation technology, ultra-wideband signal photon acquisition technology, ultra-wideband signal photon beam control technology, ultra-wideband signal photon processing technology and other microwave photon radars have been mastered.

This seminar invited 17 famous experts in the field of microwave photon radar to make a special report on the application of photon technology in the radar field, and jointly explore how microwave photonic technology can further promote the development and upgrade of radar.
 

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China’s meter wave anti-stealth radar capable of guiding missiles to destroy stealth aircraft: senior designer


China’s meter wave anti-stealth radar not only detects advanced stealth aircraft, but also guides missiles to destroy them, a senior Chinese radar designer said at a recent interview.

Meter wave radar can be deployed on vehicles, on land and warships, creating a dense web that gives hostile stealth aircraft nowhere to hide, Chinese military experts told the Global Times on Thursday.

“As long as they are designed to serve this purpose, meter wave anti-stealth radars can fulfill the requirement,” Wu Jianqi, a senior scientist at the state-owned China Electronics Technology Group Corporation (CETC) who conducts researches and designs anti-stealth radar, said when asked in an interview with the Naval & Merchant Ships magazine whether a meter wave radar can guide missiles to shoot down stealth aircraft.

Meter wave radars can detect stealth aircraft because modern stealth aircraft are mainly designed to avoid detection by microwave radar, and are less stealthy to meter wave radar, military experts noted.

However, analysts previously said that because of their low resolution and accuracy, meter wave radars can only send warnings about incoming threats. And even if microwave radars compensate for the shortcomings of the meter wave radars, they are unable to entirely overcome these shortcomings.

Wei Dongxu, a Beijing-based military analyst, told the Global Times that older meter wave radars could only see roughly an object’s general direction, not its exact location.

Wu solved the issue by designing the world’s first practical meter wave sparse array synthetic impulse and aperture radar.

Wu said that his radar has multiple transmitting and receiving antennas tens of meters high, scattered in a range of tens to hundreds of meters. They can continuously cover the sky as the radar receives echoes from all directions.

Wei said that this significantly enhances the radar’s ability to track an aerial target, pinpointing the stealth aircraft’s exact coordinates by synthesizing parameters and data gathered by the radar under the support of advanced algorithms.

Since the radar can now see stealth aircraft clearly and track them continuously and accurately, it could become capable of guiding long-range anti-aircraft missiles and landing precision strikes on them, Wei said.

Although other countries like Russia are also developing meter wave radars, Wu seems confident that China’s are the best.

“As for now, I do not see a meter wave air defense radar from abroad that can match the criteria of the advanced meter wave radar [like the one China has],” Wu said.

Source: Global Times “China’s meter wave anti-stealth radar capable of guiding missiles to destroy stealth aircraft: senior designer”
 

Hendrik_2000

Brigadier
Via Broadsword New Maritime radar that can peer hundreds of kilometer into the sea and can track stealth. this radar would be ideally installed in SCS to guard Hainan from atttack
China's maritime early warning radar system is immune to "radar killer" missiles and is capable of detecting stealth aircraft, according to its developer in a recent interview with media.
The maritime radar system, developed by a team led by Chinese academician Liu Yongtan, can detect naval and aerial hostiles hundreds of kilometers away under any weather condition.

New radar system immune to 'radar killer' missiles
upload_2019-6-10_17-39-25.png
upload_2019-6-10_17-52-42.png

By Liu Xuanzun Source:Global Times Published: 2019/6/10 17:58:40
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Radar expert Liu Yongtan (right) and defense engineering expert Qian Qihu were given the 2018 State Preeminent Science and Technology Award — the nation's highest scientific award — in Beijing on Tuesday. Photo: VCG

China's maritime early warning radar system is immune to "radar killer" missiles and is capable of detecting stealth aircraft, according to its developer in a recent interview with media.

The maritime radar system, developed by a team led by Chinese academician Liu Yongtan, can detect naval and aerial hostiles hundreds of kilometers away under any weather condition.


It features high frequency electromagnetic waves that have long wavelengths and wide beams, Liu said in an interview with the Naval and Merchant Ships magazine published this month.

While electromagnetic waves emitted by a normal radar travel in straight lines and, since the Earth is round, cannot help see what is beyond the horizon, the high frequency ones used by Liu's radar travel along the sea surface, and he said this makes it possible to detect and monitor vessels and aircraft beyond visual range.

The long wavelengths used by the system mean it could also detect stealth aircraft, Liu said. This is because current stealth aircraft are mainly designed to hide from microwaves and not waves of longer wavelengths, experts said.

The radar can also avoid attacks from anti-radiation missiles, thanks to the waves' wide beams, because such missiles cannot carry antenna large enough (to track them), Liu said.

Wei Dongxu, a Beijing-based military analyst, told the Global Times on Monday that stealth aircraft and anti-radiation missiles are two killers of radars.

Normal radars cannot detect stealth aircraft, and they would have to destroy radars first to let non-stealth aircraft in safely. An anti-radiation missile tracks an electromagnetic wave source, so it is the natural enemy of radars, Wei explained.

Liu's radar has a much higher chance of survival in a potential attack and can provide an umbrella for a sneak attack from stealth aircraft, Wei said.

A land-based version of the system can detect naval and aerial hostiles hundreds of kilometers away, which helps expand China's maritime early warning and defense depth, Liu said. Variants of the system can also be equipped on ships, providing them with early warning capabilities in the high seas with a much farther detection range, he said.

In January, Liu received the 2018 State Preeminent Science and Technology Award — the nation's highest scientific award with 8 million yuan ($1.17 million) prize — for his contributions to the development of the radar system.

Military experts said that Liu was awarded because he substantially enhanced the China's capability to resist external threats, as the radar system is dubbed a "country's first line of defense."

Here is the video

Main contents of this program: On the morning of January 8, 2019, the National Science and Technology Awards Conference was held in the Great Hall of the People. Radar expert Liu Yongtan and protective engineering expert Qian Qihu won the highest award in China's scientific and technological circles - the highest scientific and technological award in the country. . Due to the confidential nature of the work, the names of the two scientists have not been widely known for many years, but the areas they study are major projects related to national security and people's peace. "Everyone" is one of the largest CCTV capacity talk shows. The main target of the interview is "everyone" who has made outstanding contributions in the fields of science, education and culture in China. "Everyone" is not only a window for the masters to tell their life experiences, but also to show their spiritual demeanor.

 
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Via Broadsword New Maritime radar that can peer hundreds of kilometer into the sea and can track stealth. this radar would be ideally installed in SCS to guard Hainan from atttack
China's maritime early warning radar system is immune to "radar killer" missiles and is capable of detecting stealth aircraft, according to its developer in a recent interview with media.
The maritime radar system, developed by a team led by Chinese academician Liu Yongtan, can detect naval and aerial hostiles hundreds of kilometers away under any weather condition.

New radar system immune to 'radar killer' missiles
View attachment 52716

By Liu Xuanzun Source:Global Times Published: 2019/6/10 17:58:40
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Radar expert Liu Yongtan (right) and defense engineering expert Qian Qihu were given the 2018 State Preeminent Science and Technology Award — the nation's highest scientific award — in Beijing on Tuesday. Photo: VCG

China's maritime early warning radar system is immune to "radar killer" missiles and is capable of detecting stealth aircraft, according to its developer in a recent interview with media.

The maritime radar system, developed by a team led by Chinese academician Liu Yongtan, can detect naval and aerial hostiles hundreds of kilometers away under any weather condition.


It features high frequency electromagnetic waves that have long wavelengths and wide beams, Liu said in an interview with the Naval and Merchant Ships magazine published this month.

While electromagnetic waves emitted by a normal radar travel in straight lines and, since the Earth is round, cannot help see what is beyond the horizon, the high frequency ones used by Liu's radar travel along the sea surface, and he said this makes it possible to detect and monitor vessels and aircraft beyond visual range.

The long wavelengths used by the system mean it could also detect stealth aircraft, Liu said. This is because current stealth aircraft are mainly designed to hide from microwaves and not waves of longer wavelengths, experts said.

The radar can also avoid attacks from anti-radiation missiles, thanks to the waves' wide beams, because such missiles cannot carry antenna large enough (to track them), Liu said.

Wei Dongxu, a Beijing-based military analyst, told the Global Times on Monday that stealth aircraft and anti-radiation missiles are two killers of radars.

Normal radars cannot detect stealth aircraft, and they would have to destroy radars first to let non-stealth aircraft in safely. An anti-radiation missile tracks an electromagnetic wave source, so it is the natural enemy of radars, Wei explained.

Liu's radar has a much higher chance of survival in a potential attack and can provide an umbrella for a sneak attack from stealth aircraft, Wei said.

A land-based version of the system can detect naval and aerial hostiles hundreds of kilometers away, which helps expand China's maritime early warning and defense depth, Liu said. Variants of the system can also be equipped on ships, providing them with early warning capabilities in the high seas with a much farther detection range, he said.

In January, Liu received the 2018 State Preeminent Science and Technology Award — the nation's highest scientific award with 8 million yuan ($1.17 million) prize — for his contributions to the development of the radar system.

Military experts said that Liu was awarded because he substantially enhanced the China's capability to resist external threats, as the radar system is dubbed a "country's first line of defense."

Here is the video

Main contents of this program: On the morning of January 8, 2019, the National Science and Technology Awards Conference was held in the Great Hall of the People. Radar expert Liu Yongtan and protective engineering expert Qian Qihu won the highest award in China's scientific and technological circles - the highest scientific and technological award in the country. . Due to the confidential nature of the work, the names of the two scientists have not been widely known for many years, but the areas they study are major projects related to national security and people's peace. "Everyone" is one of the largest CCTV capacity talk shows. The main target of the interview is "everyone" who has made outstanding contributions in the fields of science, education and culture in China. "Everyone" is not only a window for the masters to tell their life experiences, but also to show their spiritual demeanor.

A definite game changer.:) And it doesn't stop there. More improvements of this system continues.
 

Hendrik_2000

Brigadier
The 2nd half of the video is devoted to Qian Qihu a nuclear blast expert who design the Great Chinese underground great wall that can withstand nuclear attack. I know it is not part of radar But since the video talks about these 2 gentlemens

China’s ‘Underground Steel Great Wall’ capable of defeating hypersonic weapon attacks: academician
By Deng Xiaoci and Liu Xuanzun Source:Global Times Published: 2019/1/13 17:33:39
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China should stay alert to US low-yield nuclear warheads

Qian Qihu, recipient of the 2018 State Preeminent Science and Technology Award, during his interview with the Global Times on Friday. Photo: Deng Xiaoci/GT


China's "Underground Steel Great Wall" could "guarantee the security of the country's strategic arsenal" against potential attacks, including those from future hypersonic weapons, Qian Qihu, recipient of the country's highest science and technology award, told the Global Times.

Qian, 82, an academician of both the Chinese Academy of Sciences and the Chinese Academy of Engineering, received the 2018 State Preeminent Science and Technology Award during a conference at the Great Hall of the People in Beijing on Tuesday.

The "Underground Steel Great Wall" is a series of defense facilities located deep under mountains. While the mountain rock is thick enough to resist enemy attacks, entrances and exits of these facilities are often vulnerable and Qian's work was to provide extra protection for these parts.

China's nuclear strategy follows the principle of "no first use" and requires the country to have the capability of withstanding a nuclear attack before it responds with its strategic weapons.


Qian's work guaranteed the safety of the country's strategic weapons, launch and storage facilities as well as commanders' safety during extreme times, said Song Zhongping, a military expert and TV commentator.

In an exclusive interview with the Global Times on Friday, Qian describes his work, the "Underground Steel Great Wall," as the "country's last national defense line."

If other lines of defense including the strategic missile interception system, anti-missile system and air defense system fail to function against hypersonic missiles and recently developed bunker-busters, Qian's work can still thwart such attacks.


"The development of the shield must closely follow the development of spears. Our defense engineering has evolved in a timely manner as attack weapons pose new challenges," Qian said.

According to the academician, hypersonic weapons that move 10 times as fast as the speed of sound are capable of changing trajectory mid-flight and penetrate any anti-missile installations.

US media outlet CNBC reported that in March 2018 during a State of the Nation address, Russian President Vladimir Putin debuted new nuclear and hypersonic weapons, which he described as "invincible."

The US is also trying to develop hypersonic weapons, as then US Deputy Secretary of Defense Patrick Shanahan, now acting secretary of defense, said in October. "We are going to fly sooner and more often than people have ever expected," CNBC reported.

Emerging challenges

National defense challenges do not only emerge from the development of advanced attack weapons but are also a result of an unpredictable international environment, Qian said.

He cited the recent US stance whereby the Donald Trump administration is mulling lowering the threshold for nuclear weapons deployment.

The US is planning to loosen US nuclear weapons constraints and developing low-yield nuclear warheads, the Wall Street Journal reported in January 2018.

It is highly possible that US weapons with low-yield nuclear warheads are bunker-busters, with a higher surgical strike capability that may cause larger damage, military experts previously noted, warning that China should stay alert and upgrade its own national defense.

Qian has also provided advice on civilian construction projects, including the Nanjing Yangtze River Tunnel, the Hong Kong-Zhuhai-Macao Bridge and the giant South-to-North Water Transfer Project, according to a China Global Television Network report.

Asked how he would spend the 8 million yuan cash award, Qian said that part would go to research on national defense, and the rest used for social welfare projects such as fighting poverty and supporting poor students.

"I have never had a thought of earning any prize money for my research, nor would I think it came too late," Qian said. "I am only grateful that national recognition offers a great opportunity to raise the public's national defense awareness."


Newspaper headline: Award fetes builder of ‘Steel Great Wall’
 

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