Feeds

NASA sends Mona Lisa into space by LASER

Lunar orbiter's laser ranger becomes optical communicator

  • alert
  • submit to reddit

High performance access to file storage

NASA has fired a greyscale image of the Mona Lisa to its Lunar Reconnaissance Orbiter, as part of an experiment using optics instead of radio for deep-space communications.

Any space-watcher knows the frustration at the delays imposed by skinny radio channels in anything involving a deep-space mission. NASA is intensely interested in getting more bandwidth between Earth and space, since that would let it fetch more data from spacecraft, along with more and higher-resolution images.

Mona Lisa, with and without error correction. Source: NASA

As part of that effort, the space agency used a ranging laser that tracks the LRO to carry the Mona Lisa image on its 240,000 mile (386,000 km) journey.

The next generation satellite laser ranging (NGSLR) instrument used in the experiment was built to track the Lunar Orbiter Laser Altimeter (LOLA) instrument on the orbiter. The digitized Mona Lisa piggybacked on the ranging pulses that measure the orbiter’s position.

MIT’s David Smith, principal investigator at LOLA, said that in the short term laser communications could act as a backup for the radios now used, while “in the more distant future, it may allow communication at higher data rates than present radio links can provide.”

This experiment, which sent a grey-scale Mona Lisa as an array of 152x200 pixels, only managed 300 bits/second. LOLA reconstructed the image based on the timing of the received pulses, and the spacecraft then retransmitted the image using its boring old-school radios so that earthside boffins could confirm La Gioconda made it back to earth safely.

Reed-Solomon coding was used to overcome interference caused by atmospheric turbulence.

NASS’s next laser communications experiment will be the Lunar Laser Communications Demonstration, which will try to achieve 20 Mbps transmission to the Lunar Atmosphere and Dust Environment Explorer, due to launch in May 2013.

The Earth-Moon distance achieved by this experiment is still far short of the record. In 2005, the Mercury Messenger spacecraft sent a laser message over a distance of 15 million km during an Earth fly-by.

NASA’s announcement is here. ®

High performance access to file storage

More from The Register

next story
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
LOHAN's Punch and Judy show relaunches Thursday
Weather looking good for second pop at test flights
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
Red-faced LOHAN team 'fesses up in blown SPEARS fuse fiasco
Standing in the corner, big pointy 'D' hats
Curiosity finds not-very-Australian-shaped rock on Mars
File under 'messianic pastries' and move on, people
Top Secret US payload launched into space successfully
Clandestine NRO spacecraft sets off on its unknown mission
Get your MOON GEAR: Auction to feature Space Race memorabilia
Keepsakes from early NASA, Soviet programs up for bids
New FEMTO-MOON sighted BIRTHING from Saturn's RING
Icy 'Peggy' looks to be leaving the outer rings
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
HP ArcSight ESM solution helps Finansbank
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mobile application security study
Download this report to see the alarming realities regarding the sheer number of applications vulnerable to attack, as well as the most common and easily addressable vulnerability errors.