News on China's scientific and technological development.

FairAndUnbiased

Brigadier
Registered Member
US led tech war on China helps high tech companies like United Imaging to achieve record after record in IPO within China.

While there is little likelihood that CT scan and X-ray devices for health care are high on the list of high tech products being considered for embargo by the US, just the possibility helps products of United Imaging to become the preferred choice within China, hence the high valuation at IPO.

Such high valuation will attract other Chinese entrepreneurs to create high tech companies whose products are currently dominated by foreign imports, further enhancing China's tech independence.
United Imaging tries really, really hard to hide the fact that it's a Chinese company. Or, Google tries really, really hard to do that, because it doesn't show the global Chinese page, only the US English page.
 

Strangelove

Colonel
Registered Member
Please, Log in or Register to view URLs content!

Chinese scientists develop anti-stealth radar so small it could be mistaken for rooftop clothes rack, research paper says​

  • Team from Xidian University say they have used their mobile device to track civilian aircraft, with the data suggesting the technology works
  • Several research projects in China are focused on anti-stealth radar advances, including developing quantum radar technology


Please, Log in or Register to view URLs content!

Chinese scientists allegedly develop ‘clothes rack’ like anti-stealth radar​

The Chinese anti-stealth radar uses waves that are more than a meter long and have a frequency of only 3.3 feet, says report.

Created: Aug 18, 2022 12:31 AM

Chinese scientists have allegedly developed an
Please, Log in or Register to view URLs content!
that could be quietly and easily set up almost anywhere, including a rooftop, reported
Please, Log in or Register to view URLs content!
.

Anti-stealth radar systems often need a big antenna to pick up the weak signature of stealth planes that use technology to block or deflect radar signals. This new compact system, however, if true, could prove to be revolutionary.

“Although the detection accuracy of the radar can be improved by increasing the antenna aperture, it will reduce the mobility and survivability of the radar platform,” said professor Yang Minglei in a paper published in the domestic peer-reviewed
Please, Log in or Register to view URLs content!
on August 11.

The metric wave radar array is comparable in size and looks like a "clothes-drying rack," was created by Yang and his colleagues of the national laboratory of radar signal processing at Xidian University, Xian, according to a picture published in the journal.
Researchers say that in several tests done on top of a building on a university campus, the mobile device did better in terms of accuracy and range of detection.

China has a complex air defense system that includes
Please, Log in or Register to view URLs content!
, especially along the South China Sea and eastern Pacific Ocean coasts.

In 2013, Wu Jianqia, lead scientist in the military's anti-stealth radar program, claimed that Chinese radar systems could detect and track American F-22 jets, which are thought to be the most advanced and potent stealth fighters in the world, flying several hundred kilometers off the Chinese coast.

The Chinese anti-stealth radar uses waves with a frequency of just over 3.3 feet (about a meter). According to Wu, these low-frequency waves may contact the massive parts of the stealth aircraft, like its wings or tail, and produce echo signals that are more than 100 times stronger than those of military radar that uses higher frequencies.

Most radar systems are much bigger​

The majority of metric wave radars are enormous. Even portable versions, when fully extended, can reach heights of tens of meters. They typically take hours to set up and require massive trucks to tow them, making them prime targets for satellites and drones.

In 2019, the
Please, Log in or Register to view URLs content!
Syria's Chinese-made JY-27 metric wave radar. Based on the information available to the public, the device was thought to be a smaller version of those used by the People's Liberation Army. However, the incident has made people worry about how long these anti-stealth systems will work.
 

Strangelove

Colonel
Registered Member
Please, Log in or Register to view URLs content!

China boosts sci-tech innovation in agricultural machinery, equipment

3a88b35e6ffc47e99af9a99154e531b4.png


The Chinese Academy of Agricultural Sciences (CAAS) has launched an initiative to strengthen scientific and technological innovation in agricultural machinery and equipment. /CFP

The Chinese Academy of Agricultural Sciences (CAAS) on Tuesday launched an initiative to strengthen scientific and technological innovation in agricultural machinery and equipment.

The initiative aims to accelerate the mechanized, intelligent and green development of agricultural production, providing solid equipment support for ensuring the country's food security as well as high-quality agricultural and rural development.
Focused on solving the key problems of agricultural machinery and equipment, the initiative calls for enhancing scientific and technological research on efficient, intelligent and green agricultural machinery.
708bc89ee0c645d2aa045fe274a984de.png


China's grain production has achieved a bumper harvest for 18 consecutive years, according to Wu Kongming, president of the CAAS. /CFP

Intelligent production

The initiative is centered on intelligent production equipment for major food crops, self-sufficiency of key and core technologies in production equipment for cotton and oil bulk cash crops, and the comprehensive eradication of weak links, and development of regional production equipment.

It calls for targeted scientific and technological breakthroughs in key equipment and technologies such as bulk crops, facility agriculture, and hilly and mountainous areas.

China's grain production has achieved a bumper harvest for 18 consecutive years with the strong support of agricultural machinery and equipment and agricultural mechanization, according to Wu Kongming, president of the CAAS.

The initiative is an important measure to accelerate the scientific and technological innovation of agricultural machinery and equipment in the country, Wu said.

2635c1decdc14609b202bbef7845a94a.png


China's overall mechanization rate of crop cultivation has exceeded 71 percent in recent years, according to Chen Qiaomin, director of the Nanjing Institute of Agricultural Mechanization of the CAAS. /CFP

Innovation capacity

The country's agricultural machinery and equipment innovation capacity has improved in recent years, and the overall mechanization rate of crop cultivation has exceeded 71 percent, said Chen Qiaomin, director of the Nanjing Institute of Agricultural Mechanization of the CAAS.

However, there are still problems such as the lack of agricultural machinery in hilly and mountainous areas, Chen noted.
Wu called for promoting key research tasks such as scientific and technological research on efficient and intelligent green agricultural machinery, collaborative innovation of agricultural machinery science and enterprises, and upgrading of agricultural machinery innovation platforms.

The CAAS will strive to realize leap-forward development of China's agricultural machinery equipment and agricultural mechanization technology by 2030, Wu said, adding that it will set up an intelligent agriculture and equipment science center.
 

gadgetcool5

Senior Member
Registered Member
A critical aspect of China-US competition will be STEM talent. I don't think most people - including most Americans - understand just how dependent the US is on foreign talent to fuel its tech ecosystem.View attachment 95669

China has surpassed the US in STEM graduates years ago - and the gap is growing.

View attachment 95670

International co-operation is good for China, but losing talent isn't. The good news is that fewer Chinese top students go abroad (and even among those who go, many come back), this will be a major problem for the US going forward. China should make studying abroad harder, especially as Chinese universities are becoming better and better.

Just look at how Tsinghua and PKU have improved in the past few years.

View attachment 95671

This trend of improvement is similar for other Chinese universities. It should help alleviate emigration pressure of the brightest talents.

Quacquarelli Symonds, the company that does this ranking, is British, so this is something to watch out for. If the Chinese universities really start rising further up, expect this list to start to become politicized.

Interesting that the University of Tokyo has held is position and actually risen from 2015. This is probably the only area I've seen in any metric where Japan is not in decline.
 
Top