Tech

May 8, 2013

NAWCAD scientists forge new path for underwater optics

Naval Air Warfare Center Aircraft Division engineer Dr. Linda Mullen demonstrates a laser used in underwater optics at Naval Air Station Patuxent River, Md., March 6. Mullen patented a new encoding method for laser imaging, which offers possibilities for both fleet and commercial use.

Scientists from the Naval Air Warfare Center Aircraft Division) recently brought to light a new approach for underwater optics that could enhance fleet activities, such as detecting underwater mines and seafloor mapping.

NAWCAD engineers Linda Mullen and Alan Laux invented a method to encode a laser with a radar signal to improve the performance of underwater imaging systems in murky water.

We program the laser with information about how the laser is scanning the object,î Mullen said of the project, which was developed two years ago and patented in February. Therefore, the light reflecting off the object and the surrounding environment contains all the information needed to accurately create an image.

A typical underwater laser imaging system has the transmitter and receiver on the same platform. Mullen and Laux tailored their imaging system by placing the transmitter and receiver on separate platforms. The remote receiver wirelessly collects the radar-encoded laser light from the transmitter and translates the information, while an image processor turns the digitized signal into an image.

“It’s a new way of thinking about things, Mullen said. ìIn acoustics and radar, theyíve been doing these kinds of approaches for a long time. This is very new for optics.

Their method allows for better image quality and larger operating ranges than traditional underwater optical imaging systems. With the separate platform approach, the receiver can potentially be airborne, shipboard or on another underwater stand ó a first for optics imaging. It also makes it possible to use a smaller platform, which allows the light source to get closer to the object in question without stirring up as much sediment.

Less sediment means better visibility, an important factor in activities such as minesweeping, which depends on the ability to detect mines without inadvertently triggering them.

Commercial uses for the technology exist as well. During one recent test, Maryland law enforcement officials expressed interest in using the technology to help with search and recovery efforts. Underwater laser imaging has the advantage of approaching objects from a single direction and has fewer limitations in shallow water than traditional sonar.

There are scenarios when you have to start thinking out of the box,î Mullen said. Otherwise, you are going to be limited. You wonít be able to get to see what you want to see.

NAWCAD is actively pursuing industry partners to assist in the commercialization of this technology. Call the NAWCAD Technology Transfer Office at (301) 342-1133 to discuss opportunities to collaborate or license the technology.




All of this week's top headlines to your email every Friday.


 
 

 

Headlines April 18, 2014

Business: Lockheed to Lose 17 F-35s Under Automatic Pentagon Cuts - Pentagon will cut 17 of the 343 F-35 fighters it planned to buy from Lockheed Martin in fiscal 2016 through 2019 unless Congress repeals automatic budget cuts, according to a new Defense Department report. DOD looking for ways not to break MH-60R helo deal - The...
 
 

News Briefs April 18, 2013

U.S. military deaths in Afghanistan at 2,177 As of April 15, 2014, at least 2,177 members of the U.S. military had died in Afghanistan as a result of the U.S.-led invasion of Afghanistan in late 2001, according to an Associated Press count. At least 1,802 military service members have died in Afghanistan as a result...
 
 
LM-F35-hours

F-35 fleet surpasses 15,000 flying hours

The Lockheed Martin F-35 Lightning II fleet recently surpassed 15,000 flight hours, marking a major milestone for the program.  “Flying 15,000 hours itself demonstrates that the program is maturing, but what I think is e...
 

 
nasa-cassini

NASA Cassini images may reveal birth of new Saturn moon

NASA’s Cassini spacecraft has documented the formation of a small icy object within the rings of Saturn that may be a new moon, and may also provide clues to the formation of the planet’s known moons. Images taken w...
 
 

NASA completes LADEE mission with planned impact on Moon’s surface

Ground controllers at NASA’s Ames Research Center in Moffett Field, Calif., have confirmed that NASA’s Lunar Atmosphere and Dust Environment Explorer spacecraft impacted the surface of the moon, as planned, between 9:30 and 10:22 p.m., PDT, April 17. LADEE lacked fuel to maintain a long-term lunar orbit or continue science operations and was intentionally sent...
 
 
Photograph courtesy of NASA Ames/SETI Institute/JPL-Caltech

NASA’s Kepler telescope discovers first Earth-size planet in ‘habitable zone’

Photograph courtesy of NASA Ames/SETI Institute/JPL-Caltech Kepler-186f resides in the Kepler-186 system about 500 light-years from Earth in the constellation Cygnus. The system is also home to four inner planets, seen lined up...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>