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Ring laser gyroscope

About: Ring laser gyroscope is a research topic. Over the lifetime, 2070 publications have been published within this topic receiving 18609 citations. The topic is also known as: Sagnac interferometer.


Papers
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Proceedings ArticleDOI
01 May 2020
TL;DR: In this article, a factor of 2 enhancement of the sensitivity of a mode-locked laser gyroscope was achieved through a resonant dispersion applied to all modes of the frequency comb.
Abstract: A factor of 2 enhancement of the sensitivity of a mode-locked laser gyroscope is experimentally demonstrated. This enhancement is achieved through a resonant dispersion applied to all modes of the frequency comb.
Proceedings ArticleDOI
16 Oct 2020
TL;DR: In this paper, the authors designed a higher accurate cavity length control system with self-adaption temperature compensation algorithm embedded in the laser gyroscope, which is used in the strapdown inertial navigation system.
Abstract: Laser gyroscope is a kind of high precision angular sensor which has been widely used in strapdown inertial navigation system. The cavity length of laser gyroscope varies with the external temperature changes, which have influence on the scale factor stability and bias stability. In this regard, to control cavity length of laser gyroscopes with higher precision and reliability, a precision cavity length control system with self-adaption temperature compensation method is designed. The main motivation of this contribution is to design the higher accurate cavity length control system with self-adaption temperature compensation algorithm embedded. Experimental tests show the significant performance and effectiveness of cavity length control system proposed.
Patent
14 May 2020
TL;DR: In this paper, a push-rotation structure is used for the rotation of a laser reflector, thereby increasing the size of the reflector and reducing the size and mass of the apparatus.
Abstract: Disclosed are a laser scanning attitude angle stabilization method and apparatus for a helicopter-borne lidar. A push-rotation structure is used for the rotation of a laser reflector (101), thereby effectively increasing the size of the laser reflector (101) and reducing the size and mass of the apparatus. The laser reflector (101) is mounted on a magnetic universal ball bearing, and swings for scanning by taking the sphere centre as a rotation centre, and a laser pulse is reflected at the rotation centre of the laser reflector (101). When an attitude angle of an airborne platform (5) changes, two lead screw stepping electric motors (108, 109) are used to control the laser reflector (101) to rotate reversely around the x axis and y axis in a linear pushing manner by a half of a rolling angle and a pitch angle for compensation; and a z-axis stepping electric motor (112) is used to drive the laser reflector (101) to rotate reversely around the z axis by a yaw angle amplitude for compensation, so that the spatial pointing direction of the laser scanning centre is not affected by a change in the attitude angle of the platform. The airborne platform (5) is provided with a laser gyroscope (2), the laser reflector (101) is provided with an MEMS gyroscope (4), and the normal of the laser reflector (101) is controlled to point to a desired spatial orientation by means of comparing measured values of attitude angles of the laser gyroscope and the MEMS gyroscope, thereby realizing real-time tracking and scanning of a dynamic target.
Journal ArticleDOI
TL;DR: In this paper, a monolithic chip-scale ring laser gyroscope based on both Brillouin and Sagnac effects was used to measure sinusoidal rotations with an amplitude as small as 5 degrees per hour, thus enabling the first on-chip Earth rotation measurement.
Abstract: A monolithic chip-scale ring laser gyroscope based on both Brillouin and Sagnac effects provides a sensitivity sufficient to measure sinusoidal rotations with an amplitude as small as 5 degrees per hour, thus enabling the first on-chip Earth rotation measurement.

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202347
202275
202130
202062
201963
201841