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Nanometer Precision Lidar

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GAITHERSBURG, Md., May 26, 20009 – The National Institute of Standards and Technology (NIST) has combined two different distance measurement approaches with a superaccurate technology called an optical frequency comb, to build a laser ranging system that may offer peerless precision in remote measurements. NIST’s lidar (light detection and ranging) system can pinpoint multiple objects with nanometer precision over distances up to 100 km. This system could have applications from precision manufacturing lines on Earth to maintaining networks of satellites in perfect formation, creating a giant space-based platform to search...Read full article

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    Published: May 2009
    Glossary
    lidar
    Lidar, short for light detection and ranging, is a remote sensing technology that uses laser light to measure distances and generate precise, three-dimensional information about the shape and characteristics of objects and surfaces. Lidar systems typically consist of a laser scanner, a GPS receiver, and an inertial measurement unit (IMU), all integrated into a single system. Here is how lidar works: Laser emission: A laser emits laser pulses, often in the form of rapid and repetitive laser...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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