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NIST's LIDAR May Offer Peerless Precision in Remote Measurements

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Image of Earth, Mars, the Moon and  and the sun. Click for video.

By combining the best of two different distance measurement approaches with a super-accurate technology called an optical frequency comb, researchers at Commerce’s National Institute of Standards and Technology (NIST) have built a laser ranging system that can pinpoint multiple objects with nanometer precision over distances up to 100 kilometers. The novel LIDAR (“light detection and ranging”) 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 for new planets. (More) (Video)

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