单词:ground based radar
单词:ground based radar 相关文章
The search for 370 narrows and the picture of the path seems to get sharper, let us get start, each one take a moment tonight get everyone back on the same page, the world we know so far, let us begins at 12:41 at local time in the morning of the 8th
华盛顿领空遭无人机入侵 空域安全存在漏洞 When Florida Postal Service worker Doug Hughes landed his homemade gyrocopter on the west lawn of the U.S. Capitol, in a daring bid to deliver a political message to the lawmakers, the securi
Scientists Expect Unexpected from Largest Ground-based Telescope The mirror of the Hubble Space Telescope that gave the world stunning pictures of deep space is about 4.5 square meters. Compare that with the primary mirror of the James Webb Space Tel
Keeping Washington DC Airspace Safe Is Tall Order 保持华盛顿领空安全是艰巨的任务 WASHINGTON Being the home of all three branches of the U.S. federal government makes Washington, D.C., the prime target for those who want to make their m
保持华盛顿领空安全并非易事 Being the home of all three branches of the U.S. federal government makes Washington, D.C., the prime target for those who want to make their messages and ideas heard. Unfortunately, many of them choose to deli
This is Scientific American's 60-Second Science, I'm Cynthia Graber. This'll just take a minute. Its often said we know more about the moon than we do about the depths of the ocean. There is a lot we dont know about the H2O that covers much of the pl
Threat posed by Iraq's Scud ballistic missiles. Militarily, Scuds were insignificant. But politically, Scud attacks on Israel and Saudi Arabia could have torn the coalition apart. The political importance of hunting down the Scuds was so great that t
The Viking longship might have looked like this. A 1,000-year-old Viking longship is thought to have been discovered under a pub car park on Merseyside. The vessel is believed to lie beneath 2 metres to 3 metres of clay by the Railway Inn in Meols,
Its often said we know more about the moon than we do about the depths of the ocean. There is a lot we dont know about the H2O that covers much of the planet. Now were getting closer, though, to an important understanding: Just how deep are the ocean
We`re talking about anything from stone tools to complex machines. A lot of times archeologists have to dig in order to find those artifacts. Not the researchers features in our next report from Nick Glass.They`re using modern technology to try to le
By Al Pessin Washington 28 September 2006 US Air Force Gen. Kevin Chilton The head of the U.S. Air Force Space Command says he is working to improve the military's sensor system to ensure that no one can threaten crucial space-based assets. The comm
US Company Developing Space-Based Plane Tracking 美国公司开发太空基地飞机追踪技术 LEESBURG, VA One of the reasons Malaysia Airlines flight MH370 hasn't been found is because the plane couldn't be tracked continuously over the ocean. I
A 1,000-year-old Viking longship is thought to have been discovered under a pub car park on Merseyside. The vessel is believed to lie beneath 2 metres to 3 metres of clay by the Railway Inn in Meols, a town in the north west of England, where Vikings
In 1994, when Boeing first published safety data, showing a clear correlation between a country's plane crashes and its score on Hofstede's dimensions, the company's researchers practically tied themselves in knots trying not to draw offense. 1994年,
By Al Pessin Prague 23 October 2007 U.S. Defense Secretary Robert Gates says the United States might be willing to postpone activation of missile-defense sites planned for Poland and the Czech Republic until there is proof Iran has missiles that coul
Manned space program's Meridian Project operational BEIJING, Oct. 23 (Xinhua) -- The Meridian Project, a massive scientific research project that will monitor weather in space, became fully operational on Tuesday. The Meridian Space Weather Monitorin
WASHINGTON, March 15 (Xinhua) -- U.S. Defense Secretary Chuck Hagel on Friday announced that he has ordered the military to beef up the missile defense system by deploying 14 additional ground- based interceptors. At a Pentagon press briefing, Hagel
The 1.5-kilogram drones, made of carbon fiber, are equipped with an infrared cameras, allowing them to see in the dark. They will also be fitted with radar systems and communications antenna to extend monitoring capabilities. But the truly outstandin
Halo works because of several factors 由于下降速度快 High downward velocity and minimal metal and forward air speed, 金属赘物少 气流速度快 which all serve to defeat the radar.Wow! Just amazing! 高跳低开术可以避开多数的雷达
China on Tuesday released images of a Mars probe and rover which the country plans to send to the Red Planet within five years. 上周二,中国发布了火星探测器和火星车的图片,并计划在五年内将其发射到火星上。 China p