Ring laser gyroscope
Ring laser gyroscopes can be used as the stable elements in an inertial reference system. The advantage of using an RLG is that there are no moving parts, compared to the conventional spinning gyroscope. Modern applications of the Ring Laser Gyroscope include an embedded GPS capability to further enhance accuracy.
About Ring laser gyroscope in brief
Ring laser gyroscopes can be used as the stable elements in an inertial reference system. The advantage of using an RLG is that there are no moving parts, compared to the conventional spinning gyroscope. Ring laser cavity is rotated clockwise and anti-clockwise about its axis using a mechanical spring driven at its resonance frequency. Typical rates are 400 Hz, with a peak dither velocity of the order of 1 degree per second. Modern applications of the Ring Laser Gyroscope include an embedded GPS capability to further enhance accuracy of RLG Inertial Navigation Systems s on military aircraft, commercial airliners, ships and spacecraft.
These hybrid INSGPS units have replaced their mechanical counterparts in most applications. Many tens of thousands of RLGs are operating in inertial navigation systems and have established high accuracy, with better than 0. 01°hour bias uncertainty, and mean time between failures in excess of 60,000 hours. A related device is the Faraday gyro optic which operates on the basis of the Sagnac effect which also injects optical fiber into an optical fiber.
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This page is based on the article Ring laser gyroscope published in Wikipedia (as of Dec. 18, 2020) and was automatically summarized using artificial intelligence.
