Topic
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 published on a yearly basis
Papers
More filters
01 Apr 2018
TL;DR: In this article, an active control of a large frame ring laser gyroscope (RLG) with ultimate sensitivity requires the development of a very careful active controlling of the ring geometry, which can be obtained in a square ring by measuring against a reference laser the diagonals length and eventually implementing a procedure to equalize them.
Abstract: The operation of a large frame ring laser gyroscope (RLG) with ultimate sensitivity requires the development of a very careful active control of the ring geometry. This can be obtained in a square ring by measuring against a reference laser the diagonals length and eventually implementing a procedure to equalize them. The technique to measure and to stabilize the diagonals has been tested on GP2, a RLG of reduced dimension installed in INFN laboratories in Pisa. A resolution better than 1 ppm, limited by the local anthropic noise, has been obtained.
2 citations
17 Dec 2015
TL;DR: In this article, a fiber optic gyroscope FOG using a photosensitive line to scan interferograms is proposed, which significantly reduces the impact of the following optical noise factors: zero drift, Rayleigh scattering, the Kerr effect, etc.
Abstract: Design of a fiber optic gyroscope FOG using a photosensitive line to scan interferograms is proposed. Shift periods depends mainly on the change of the phase of counter light waves propagating along the closed loop in opposite directions while rotating loop around an axis that is normal to its plane. Phase shift is proportional to the angular velocity Ω and the area of the circuit S which is bypassed by the counter-propagating waves. Proposed FOG design significantly reduces the impact of the following optical noise factors: zero drift, Rayleigh scattering, the Kerr effect, etc.
2 citations
TL;DR: In this article, a novel ring laser gyro (RLG) SINS dynamic error compensation method is proposed under vibration environments in which g-sensitive misalignment model of the RLG unit is developed.
Abstract: The dither axis bending occurs in the presence of input acceleration acting on the laser block of the ring laser gyro (RLG) due to the limited transverse stiffness of the dither motor, which will cause g-sensitive misalignments under vibration environments. A novel RLG SINS dynamic error compensation method is proposed under vibration environments in this paper. G-sensitive misalignment model of the RLG unit is developed. The equivalent gyro drift model under rotation and acceleration environments is deduced to describe the dynamic error. Optimized vibration experiments are conducted to estimate the unknown parameters. Vibration experiment results prove the validity of this method.
2 citations
23 Oct 2006
TL;DR: In this paper, a ring laser gyroscope that gives the Sagnac beat frequency as the oscillation frequency of the amplitude of the only unidirectional propagating mode instead of the coupled counter-propagating laser lights was proposed.
Abstract: We propose a novel ring laser gyroscope that gives the Sagnac beat frequency as the oscillation frequency of the amplitude of the only unidirectional propagating mode instead of the coupled counter-propagating laser lights in the conventional ring laser gyroscope.
2 citations
01 Aug 2014
TL;DR: In this paper, wave loads are calculated first and added to the FE(Finite Element) model of the warship, and then the deformation of each node can be calculated.
Abstract: Deformation of large warship can be estimated by inertial matching method according to the outputs of IMU (Inertial Measurement Unit, laser gyro plus accelerometer). A evaluation environment has been developed in this paper, wave loads are calculated first and added to the FE(Finite Element) model of the warship, and then the deformation of each node can be calculated. The output of the IMU can be deduced from the output of the FE model, which will applied for the estimation about the local deformation based on the inertial matching method, the output of the FE model can be transformed to the ideal deformation for the proving of the validity of inertial matching method.
2 citations