Breaking News
Deporting Illegals Is Legal - Military In America's Streets Is Not!
Turn Your Homesteading into a Farm (Making Money on the Homestead) | PANTRY CHAT
"History Comes In Patterns" Neil Howe: Civil War, Market Crashes, and The Fourth Turning |
How Matt Gaetz Escaped Greenberg's Honeypot and Exposed the Swamp's Smear Campaign
Top Tech News
Forget Houston. This Space Balloon Will Launch You to the Edge of the Cosmos From a Floating...
SpaceX and NASA show off how Starship will help astronauts land on the moon (images)
How aged cells in one organ can cause a cascade of organ failure
World's most advanced hypergravity facility is now open for business
New Low-Carbon Concrete Outperforms Today's Highway Material While Cutting Costs in Minnesota
Spinning fusion fuel for efficiency and Burn Tritium Ten Times More Efficiently
Rocket plane makes first civil supersonic flight since Concorde
Muscle-powered mechanism desalinates up to 8 liters of seawater per hour
Student-built rocket breaks space altitude record as it hits hypersonic speeds
Researchers discover revolutionary material that could shatter limits of traditional solar panels
DARPA Laser radar can see wind 8.6 miles away and enables permanent balloons
They are testing a wind sensor to detect changes in wind speed and direction from large distances. This is part of the Adaptable Lighter-Than-Air (ALTA) balloon program. The balloons can change altitude and position to stay in one spot.
DARPA balloons could provide secure communications and navigation or act as a mother ship for drones.
Ball Aerospace has built the Stratospheric optical autocovariance wind lidar (StratOAWL) device.
OAWL shines pulses of laser light into the air. A small fraction of the beam is reflected back, and the reflected laser light is gathered by a telescope. The wavelength of the reflected light is changed slightly depending on how fast the air it bounced back from is moving, a change known as doppler shift. By analyzing this shift, OAWL can determine the speed and direction of the wind.