Errymath: hyperspectral imaging

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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8SxVZEAWMyd4l3BkXKp8TXtfemaADEMYK3N5dHZUPYwT33L5aOoGhQ2TS1ocxcglmESoDe2Jd36QbI4mYPnqAxhrqPBglOYSEQs6HvMuaxklcLzlZHqcq3PJMKdAzCaJyOOHZh_q2frY/s1600/china_hyperspectral_image.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="376" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8SxVZEAWMyd4l3BkXKp8TXtfemaADEMYK3N5dHZUPYwT33L5aOoGhQ2TS1ocxcglmESoDe2Jd36QbI4mYPnqAxhrqPBglOYSEQs6HvMuaxklcLzlZHqcq3PJMKdAzCaJyOOHZh_q2frY/s640/china_hyperspectral_image.jpg" width="640" /></a></div>
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    Image Cuge<br />

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    This hyperspectral image cube (layers of the image in hundreds of
 different EM wavelengths) of terrain allows for detailed analysis of 
the imaged area, since anomalies and features (such as mineral deposits)
 of the land would react differently to different EM wavelengths.<br />
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<img alt="China HJ-1B Satellite Hyperspectral" class="full-width unveil-processed full-visible" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/hj-1_camera.jpg?itok=g2glOe-l" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/hj-1_camera.jpg?itok=Hn8YLlBG" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/hj-1_camera.jpg?itok=BKf-9fUK" data-src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/hj-1_camera.jpg?itok=Hn8YLlBG" height="384" src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/hj-1_camera.jpg?itok=Hn8YLlBG" width="640" /><div class="caption-wrapper">
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    China National Space Administration<br />

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    Many Eyes in One<br />

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    Hyperspectral cameras, such as this one launched in 2008 on the 
HJ-1B microsatellite, share technology with spectrometers, which measure
 the material composition of objects through the unique signature that 
each material has to a certain EM wavelenght.<br />
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While SEAL Team 6 descended upon Osama Bin 
Laden's compound in Abbottabad, Pakistan in 2011, they used 
hyperspectral imaging to gain an edge in nighttime urban combat.  But 
China is soon bringing that advantage to space, preparing to launch the 
world's most powerful hyperspectral imaging satellite.</div>
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Electro-optical devices like cameras and 
infrared sensors generally observe only one band in the electromagnetic 
spectrum, i.e. cameras observe the band visible to human eyesight and 
infrared cameras view the infrared band.  Hyperspectral cameras and 
sensors, on the other hand, can simultaneously view hundreds of 
electromagnetic bands for a single image, building a layered 'cube' of 
the image in different electromagnetic wavelengths. The use of such a 
wide range of wavelengths provides the ability to observe objects which 
conceal their emissions in one part of the spectrum (i.e. stealth 
aircraft and thermally suppressed engines) or are hidden (such as 
underground bunkers).</div>
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<img alt="Chang&#039;e 1 China Moon Hyperspectral" class="full-width unveil-processed full-visible" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/change_hyperspectral_moon.jpg?itok=WHvRbnzh" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/change_hyperspectral_moon.jpg?itok=RIZcwjPl" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/change_hyperspectral_moon.jpg?itok=H7H7JsM4" data-src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/change_hyperspectral_moon.jpg?itok=RIZcwjPl" height="465" src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/change_hyperspectral_moon.jpg?itok=RIZcwjPl" width="640" /><div class="caption-wrapper">
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    RADI<br />

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    Chang'e 1 Lunar Scans<br />

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    The Chang'e 1 lunar orbiter used a hyperspectral camera to identity different layers of mineral deposits in the lunar crust.<br />
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Since the 1970s, China has a strong history 
of scientific and civilian utilization of hyperspectral imaging.  
Space-based platforms include the Chang'e lunar missions and 
Earth-observation from the Tiangong space station and HJ-1 small 
satellite.  Aircraft-mounted hyperspectral imagers are used for tasks 
such as environmental surveys, oil prospecting, disaster relief and crop
 measurement.  As computer processing power improves and hyperspectral 
sensors get smaller, Chinese civilian and military applications are 
likely to expand.</div>
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<img alt="China CCRSS satellite hyperspectral camera" class="full-width unveil-processed full-visible" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/ccrss_hyperspectral_camera.jpg?itok=eBXISMxq" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/ccrss_hyperspectral_camera.jpg?itok=GGowEogd" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/ccrss_hyperspectral_camera.jpg?itok=-7-dQ5OH" data-src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/ccrss_hyperspectral_camera.jpg?itok=GGowEogd" height="396" src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/ccrss_hyperspectral_camera.jpg?itok=GGowEogd" width="640" /><div class="caption-wrapper">
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    Institute of Remote Sensing and Digital Earth<br />

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    CCRSS<br />

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    The CCRSS's hyperspectral camera will be the most powerful in 
orbit, with a 15 meter resolution across 328 electromagnetic bands, once
 launched later this year.<br />
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A key in this program is the China Commercial
 Remote-sensing Satellite System (CCRSS), to be launched later this 
year.  It can collect data on 328 electromagnetic bands, offering very 
high resolution of up to 15 meters, according to the researchers from 
the Institute of Remote Sensing and Digital Earth in Beijing. In 
comparison, the U.S. TacSat 3, launched in 2010, collects only 300 
electromagentic bands, at a lower resolution.  While it is being 
launched for commercial users, like most other Chinese earth-observation
 satellites, it would also be available for military use.</div>
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<img alt="Professor Xiang Libin President Xi Jinping China hyperspectral" class="full-width unveil-processed full-visible" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/xiang_xi.jpg?itok=QA5jq3Qx" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/xiang_xi.jpg?itok=xZPNV1mA" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/xiang_xi.jpg?itok=5AEBF7Eq" data-src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/xiang_xi.jpg?itok=xZPNV1mA" height="398" src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/xiang_xi.jpg?itok=xZPNV1mA" width="640" /><div class="caption-wrapper">
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    South China Morning Post<br />

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    Congratulations<br />

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    Professor Xiang Libin, of the Shanghai Engineering Center for 
Microsatellites, shakes Chinese President Xi Jinping's hands after 
received an unspecified decoration in the 2016 National Science and 
Technology Awards.<br />
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Notably, on January 8, 2016, hyperspectral 
expert Professor Xiang Libin of the Shanghai Engineering Center for 
Microsatellites received an award from President Xi Jinping during the 
2016 national science and technology awards ceremony, for an unspecified
 project.  Interestingly, Professor Xiang's non-mention on the awards 
program mirrors the scrubbing of a 2015 Feng Ru aeronautic award handed 
out to Professor Wang Zhengguo for developing China's first scramjet 
hypersonic engine.</div>
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<img alt="Hyperspectral IED US Army" class="full-width unveil-processed full-visible" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/hyperspectral_imaging_ndm.jpg?itok=McZZ5Qt1" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/hyperspectral_imaging_ndm.jpg?itok=W4wItpkl" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/hyperspectral_imaging_ndm.jpg?itok=z5020sow" data-src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/hyperspectral_imaging_ndm.jpg?itok=W4wItpkl" src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/hyperspectral_imaging_ndm.jpg?itok=W4wItpkl" /><div class="caption-wrapper">
<a class="colorbox-button cboxElement" href="http://www.popsci.com/china-to-launch-worlds-most-powerful-hyperspectral-satellite"> </a>
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    National Defense Magazine<br />

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    You Can't Hide<br />

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    U.S. Army troops already use hyperspectral imagery (often 
obtained from aircraft) to locate hidden hazards like IEDs (across many 
different EM wavelenghts, IEDs and other man-made objects give off a 
different imagery from natural features).<br />
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Broader Chinese advances in hyperspectral imaging can be expected to 
have a variety of military uses. Hyperspectral imaging can be a valuable
 tool for finding submarines and underwater mines in shallow waters.  On
 land, they can determine the actual composition of objects to 
distinguish decoys (hyperspectral imaging can capture the differences in
 EM signature of a wooden decoy versus an actual missile launcher).  In 
the air, hyperspectral sensors can passively detect even thermally 
shielded stealth aircraft.  For counter-WMD missions, hyperspectral 
imaging can be used to detect nuclear and chemical weapons production, 
as well as locating the underground tunnels and bunkers that would house
 those strategic assets.  For China, hyperspectral imaging is opening up
 a whole new world.<br />
<i>By Jeffrey Lin and P.W. Singer. | Popular Science.</i> <br />
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The World's Most Powerful Hyperspectral Satellite

Image Cuge This hyperspectral image cube (layers of the image in hundreds of different EM wavelengths) of terrain allows...

Errymath

The World's Most Powerful Hyperspectral Satellite

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