| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an accurate modeling method of the optimal design parameter of an interference system fiber optic gyroscope where polarization errors and bias instability are reduced. Ž<P>SOLUTION: A computer-implementable method of reducing the bias instability includes receiving, with a computer, a first data set enabling the computer to generate a model 1 of the gyroscope, including a light source 11, a photodetector 14, and a plurality of optical components and fiber sections coupling the light source to the photodetector. For each wavelength of the spectrum, the relative light-wave intensity reaching the photodetector is calculated. A signal-wave intensity and a spurious-wave intensity are determined from the relative light-wave intensities. A scale factor is determined from the signal-wave intensity. The spurious-wave intensity is integrated over the wavelength spectrum of the light source to obtain a total spurious-wave intensity. A rate bias error is determined based on the total spurious-wave intensity and the scale factor. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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