Resonant optical gyroscope simulation method

Abstract

The invention discloses a resonant optical gyroscope simulation method, comprising steps of 1) initializing a global time signal required by simulation; 2) providing the global time signal in the step 1) to various data signals on a computer simulation platform; 3) setting parameters involved in data signal process in the simulation task; 4) setting a simulation time length of simulation system; 5) starting system simulation to process signals; 6) observing and storing simulation results; 7) analyzing simulation result in the step 6) 8) changing simulation parameters for continuous simulation or simulation realized. The invention uniforms optical process and electrooptical process in resonant optical gyroscope by packaging optical and electric apparatus as modules, which greatly reduces work load of constructing system during simulation and overcomes problem that traditional method can not reproduce various optical phenomena. The optical noise is described by compute language and influence of optical noise in simulation is added, which enhances process of optical noise.

Description

technical field [0001] The invention relates to the simulation field, in particular to a resonant optical gyro simulation method. Background technique [0002] The resonant optical gyroscope is a high-precision inertial sensor device that uses the optical Sagnac effect to detect rotation. The traditional resonant optical gyro system adopts phase modulation spectrum detection technology, and the processing process is shown in Figure 1 [0003] The output light field of the laser is divided into two light fields of forward (CW: Clockwise) and counterclockwise (CCW: Counter Clockwise) through a 50% coupler, and the two light fields enter the resonant cavity through a phase modulator and a circulator respectively. After the multi-turn interference effect of the resonant cavity, they are converted into electrical signals at PD1 and PD2 respectively. Among them, after the CCW signal passes through PD2, it is synchronously demodulated by LIA2 to generate an error signal, which is...

AI Technical Summary

Problems solved by technology

[0005] The traditional simulation method only converts the entire loop into an S-domain model similar to the phase-locked loop loop, which cannot describe the modulation and demodulation process of the resonant optical gyroscope phase modulation spectrum technology and the optical path transfer process in the resonant optical gyroscope. The generation of optical noise in the resonant ring cannot be reproduced

As a result, the simulation cannot match the actual system well

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