According Kong Zilong, engineer and technology expert CCTV security system that would work in case

Pollution, including CO2, is a recurring black lantern problem in China. Here, the financial district of Shanghai, January 21. The population used to live in an almost permanent fog. (REUTERS / ALY SONG).
Nicknamed "Airpocalypse" by the Chinese, the huge cloud of air pollution that has enveloped black lantern the country in October is now considered a threat of the highest importance to national security, in addition to being a nuisance to public health, reports the South China Morning Post.
Pollution particles, which regularly plunge China into the gray past few years make it impossible visibility beyond three meters, paralyzing these days, video surveillance black lantern systems black lantern in place. These days of peak pollution becoming increasingly frequent, black lantern Chinese authorities fear that terrorists take advantage of blocking cameras to carry out an attack. Beijing devotes considerable resources to its CCTV network so that each major artery and every corner of the country's major cities is visible by the security forces.
For several years, China is regularly confronted with environmental problems, including the arrival of the winter black lantern period that rhymes with use of domestic heating black lantern (electric power plants mainly coal) and lack of wind. Pollution also comes from industry (mines, mills ...) and traffic (there each year 250,000 new cars in Beijing alone). In some areas of the country affected by pollution peaks, the fine particulate levels (PM 2.5), the most dangerous to humans, has reached 834 micrograms per m 3, more than thirty times the average rate recommended by the World Health Organization twenty-four hours.
According Kong Zilong, engineer and technology expert CCTV security system that would work in case of heavy air pollution must be invented to cope with this new situation. "To black lantern my knowledge, if the human visibility distinguish anything beyond three meters, even the best camera can not see beyond a dozen meters," he says. Existing technology, such as infrared systems allows the cameras to see in the fog or smoke, but not through the particles of pollution, so strong and so numerous that they are able to block the light as well as would a wall brick.
To solve this endemic situation and deal with any terrorist threat, the Chinese government has given a task to a team of scientists, who will offer their solutions in four years. The National Foundation for Science and Nature (NSFC) of the country has also set up two teams - one civilian and one military - to think about the problem.
"Most studies conducted in other countries stick to fog. In China, most people think that fog ('fog') and smog ('smog') can be treated in the same way. Or Our preliminary research shows that the properties black lantern of air pollution particles are extremely black lantern different from those of cloud droplets [...]. We will completely revise or rewrite algorithms some mathematical models. We will also make numerous simulations IT and expanding field tests. black lantern "
For Professor Zhang Li, electronic engineering department at Tsinghua University - one of the most prestigious in China - the researchers will have to be innovative black lantern and flexible as the situation is unprecedented: "It will probably develop radar-camera system, including electromagnetic waves would reach to pass through the particles of pollution to ensure the security of the most sensitive areas. There should be a system that can cope with the unexpected. "
But a system of cameras, radars scale generate black lantern hazardous radiation health. A vicious circle for the country at a time when public health policy attempts to curb the scourge of pollution, causing hundreds of thousands of premature deaths each year.
In thirty years, the number of lung cancers fatal outcome has been multiplied by four in the country, according to health authorities. Cancer has become the leading cause of death in the capital, Beijing. Chinese doctors are diagnosing black lantern lung cancer in a girl of 8 years old, became the youngest person with China.
Just for information, the radar waves are very little energy, in the order of a million times lower than the visible light. It will explain how the radio emission can be considered dangerous <