[tahanteada]

Seekord siis silma jäänud uudis laserimaailmast:

Laser Makes More Accurate Radar System
Using a laser to generate radio-frequency radar pulses, a group of researchers has demonstrated a radar system that they say can be smaller, more efficient, and more accurate than anything available today.

The work could make it easier for radar systems to use software-defined radio, which allows users to rapidly change the signal they generate using software rather than analog hardware components such as mixers, amplifiers, and the like. Dispensing with these electronic components would make radars smaller, lighter, and more energy efficient, making them attractive for use aboard airplanes and in remote locations. They could even be switched on the fly from acting as radars to working as communications devices, says Paolo Ghelfi, an optical communications researcher at the National Inter-University Consortium for Telecommunications in Pisa, Italy. Ghelfi, head of research Antonella Bogoni, and their colleagues describe their photonics-based, fully-digital radar system, PHODIR, in this week’s issue of Nature.

“Since it is fully digital you can decide to do any kind of signal,” Ghelfi says. “If you detect something that is of interest you can change the waveform just in that direction.”

Pikem jutt siis lingil:
http://spectrum.ieee.org/tech-talk/aerospace/aviation/laser-makes-more-accurate-radar-system