Tag Archives: Laser

Boeing’s laser hunts for drones

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Boeing's compact laser weapons system disables a moving, untethered unmanned aerial vehicle in a test on August 3, 2015. Credit: Boeing

Boeing’s portable drone-destroying laser system is one step closer to the battlefield after a recent test.

Earlier this month in California, Boeing’s second-generation, compact-laser weapons system disabled a moving, untethered drone. That’s important because enemies can easily acquire commercially available drones — also known as unmanned aerial vehicles (UAVs) — and use them to deliver explosives or perform reconnaissance. 

Using a laser of up to two kilowatts, the weapons system can focus on a target located at a tactical distance up to many hundreds of meters away, according to a Boeing video of the technology. 

It took only a few seconds for the drone to ignite and crash. The laser is typically aimed at the tail of the drone because, once that section of the drone is disabled, it becomes impossible to control the drone, according to Dave DeYoung, director of laser and electro-optical systems at Boeing.

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Boeing's two-kilowatt compact laser weapons system is fired at a target in a lab causing it to almost instantly ignite in a test on August 26, 2015.

Sometimes it doesn’t make sense to fire a missile, which may range in cost from $30,000 to $3 million, at a drone that may cost a few thousand dollars, he said in an interview.

It costs “a couple of dollars” for each firing of the new laser weapons system, he said. 

“It’s not an either-or situation,” he said. “There will be instances when missiles make sense.”

One of the drawbacks of using lasers, DeYoung said, is that light, unlike a missile, keeps going. The Boeing weapon uses a safeguard to make sure there is a clear line of sight both to and beyond the target. 

For more information and the original story plus more images and a video follow this link to Computerworld.

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NASA Beams “Hello, World!” Video from Space via Laser

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NASA successfully beamed a high-definition video 260 miles from the International Space Station to Earth Thursday using a new laser communications instrument.

Transmission of “Hello, World!” as a video message was the first 175-megabit communication for the Optical Payload for Lasercomm Science (OPALS), a technology demonstration that allows NASA to test methods for communication with future spacecraft using higher bandwidth than radio waves.

“The International Space Station is a test bed for a host of technologies that are helping us increase our knowledge of how we operate in space and enable us to explore even farther into the solar system,” said Sam Scimemi, International Space Station division director at NASA Headquarters in Washington. “Using the space station to investigate ways we can improve communication rates with spacecraft beyond low-Earth orbit is another example of how the orbital complex serves as a stepping stone to human deep space exploration.”

Optical communication tools like OPALS use focused laser energy to reach data rates between 10 and 1,000 times higher than current space communications, which rely on radio portions of the electromagnetic spectrum.

Because the space station orbits Earth at 17,500 mph, transmitting data from the space station to Earth requires extremely precise targeting. The process can be equated to a person aiming a laser pointer at the end of a human hair 30 feet away and keeping it there while walking.

To achieve this extreme precision during Thursday’s demonstration, OPALS locked onto a laser beacon emitted by the Optical Communications Telescope Laboratory ground station at the Table Mountain Observatory in Wrightwood, California, and began to modulate the beam from its 2.5-watt, 1,550-nanometer laser to transmit the video. The entire transmission lasted 148 seconds and reached a maximum data transmission rate of 50 megabits per second. It took OPALS 3.5 seconds to transmit each copy of the “Hello World!” video message, which would have taken more than 10 minutes using traditional downlink methods.

“It’s incredible to see this magnificent beam of light arriving from our tiny payload on the space station,” said Matt Abrahamson, OPALS mission manager at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California. “We look forward to experimenting with OPALS over the coming months in hopes that our findings will lead to optical communications capabilities for future deep space exploration missions.”

The OPALS Project Office is based at JPL, where the instrument was built.  OPALS arrived to the space station April 20 aboard SpaceX’s Dragon cargo spacecraft and is slated to run for a prime mission of 90 days.

View the “Hello, World!” video transmission and animation of the transmission between OPALS and the ground station, at:

http://youtu.be/1efsA8PQmDA

For more information about OPALS, visit:

http://go.nasa.gov/10MMPDO

For more information about the International Space Station, visit:

http://www.nasa.gov/station

Source: NASA