<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Society

          'Drones' key to fighting terrorism

          By Xin Dingding (China Daily)
          Updated: 2011-05-20 08:03
          Large Medium Small

          'Drones' key to fighting terrorism

          Police officers look at a model of a police helicopter on display at the fourth China (Beijing) International Exhibition and Symposium on Police Equipment and Anti-Terrorism Technology and Equipment on Thursday. Zhang Wei / China Daily 

          BEIJING - More unmanned aerial vehicles, so-called drones, are likely to be used for security purposes in future, supplementing the anti-terrorism work that currently relies on cars and other ground-based equipment.

          Three types of domestically developed unmanned aerial vehicles and one that was imported attracted a lot of attention at the fourth China (Beijing) International Exhibition and Symposium on Police Equipment and Anti-Terrorism Technology and Equipment on Thursday.

          "The anti-terrorism concept has evolved. In the past, anti-terrorism efforts depended on things like individual equipment and armored cars. Nowadays, unmanned aerial vehicles and helicopters are more frequently used," said Ma Tenglong, a marketing manager with the Aviation Industry Corporation of China (AVIC).

          In anti-terrorism operations outside China - including the recent killing of Osama bin Laden by the United States - unmanned aerial vehicles and helicopters have played an important role in reconnaissance and also carry out air-to-ground attack missions.

          "Unmanned aerial vehicles and helicopters will play a bigger role in anti-terrorism missions in the future, both at home and abroad," Ma said.

          At present, drones have not been used domestically to strike terrorists, said Li Wei, director of the anti-terrorism research center at the China Institutes of Contemporary International Relations.

          "Armed police and other anti-terrorism forces have enough capability to handle terrorists inside the country nowadays," he said. "But unmanned aerial vehicles will be useful for reconnaissance along border areas, where natural conditions are inhospitable, so that terrorists trying to sneak into the country can be found and stopped."

          AVIC, the country's largest aircraft manufacturer, displayed three types of drone at the exhibition for the first time.

          One of them, named Pterodactyl, can be used for both surveillance and reconnaissance as well as air-to-ground attack missions. It can be used for 20 hours straight and fly at up to 5,000 meters.

          Xia Tian, a member of the marketing staff at AVIC's Chengdu Aircraft Design and Research Institute, said the vehicle is "one of the world's most advanced".

          The Beijing municipal public security bureau, which co-sponsored the exhibition, told reporters it is considering buying unmanned aerial vehicles for use in emergencies, for the monitoring of traffic and the pursuit of suspects. The bureau said infrared detectors on the drones would be especially useful in locating suspects at night.

          The capital now has four helicopters and a number of small reconnaissance drones. Because the city's airspace is under strict air traffic control, unmanned aerial vehicles also have the advantage of being subject to less air traffic control than helicopters, Jia Wensheng, a bureau official, was quoted as saying.

          In addition to aircraft, more than 200 exhibitors displayed other anti-terrorism technology and equipment at the exhibition, including a fast detector of liquid explosives and face-recognition technology.

          Li Wei said face-recognition technology could have a broad application in China because it can work with widely installed security cameras and would help with the locating of wanted terrorists and suspects.

          主站蜘蛛池模板: 精品自拍自产一区二区三区| 色噜噜狠狠色综合中文字幕 | 少妇被粗大的猛烈进出动视频| 国产一区二区日韩在线| 亚洲中文字幕国产av| 久久亚洲av成人一二三区| 国产最新AV在线播放不卡| 国产自在自线午夜精品| 被喂春药蹂躏的欲仙欲死视频| 国产经典三级在线| 99RE8这里有精品热视频| 欧美性猛交xxx×乱大交3| 亚洲午夜福利网在线观看 | 精品超清无码视频在线观看| 成人免费777777| 久久中文字幕av第二页| 国产内射性高湖| 国产日韩久久免费影院| 无码中文av波多野结衣一区| 4hu四虎永久在线观看| 亚洲欧洲日韩精品在线| 四虎在线播放亚洲成人| 日本偷拍自影像视频久久| 日韩免费人妻av无码专区蜜桃| 少妇撒尿一区二区在线视频 | 给我免费播放的电影在线观看 | 欧美日韩国产图片区一区| 亚洲欧美中文日韩V日本| 国产高潮又爽又刺激的视频| 午夜毛片不卡免费观看视频| 亚洲最大成人一区久久久| 亚洲无人区一区二区三区| 亚洲中文无码av永久app| 久久精品国产亚洲夜色av| 51精品国产人成在线观看| 成人亚洲一级午夜激情网| 内地自拍三级在线观看| 国产h视频在线观看| 最新永久免费AV无码网站| 国产在线98福利播放视频| 久久不见久久见www日本|