CAJ | 학술논문

光纤陀螺惯导系统在位置标定实验时，光纤陀螺绕输入基准轴的不同位置零偏不一致，称为“四位置”误差。结合光纤惯性组合标定时出现的“四位置”误差问题，通过对光纤陀螺法拉第效应误差模型和对实验数据的分析，研究了“四位置”误差与光纤陀螺磁敏感性和输入轴失准角之间的关系。得出光纤陀螺“四位置”误差主要是由地磁场影响造成。对光纤陀螺采用磁屏蔽措施，可以显著减少“四位置”误差。
광섬타라관도계통재위치표정실험시，광섬타라요수입기준축적불동위치령편불일치，칭위“사위치”오차。결합광섬관성조합표정시출현적“사위치”오차문제，통과대광섬타라법랍제효응오차모형화대실험수거적분석，연구료“사위치”오차여광섬타라자민감성화수입축실준각지간적관계。득출광섬타라“사위치”오차주요시유지자장영향조성。대광섬타라채용자병폐조시，가이현저감소“사위치”오차。
The“four location error”which emerges in FOG inertial navigation system calibration is researched. By studying the magnetic model of FOG and the experiment results,the influence of FOG’s magnet sensitivity and input axis misalignment angle on the“four location error”is explored. A conclusion that the“four location error”is mainly caused by geomagnetic field is obtained. It is pointed out that the“four location error”can be significantly reduced by a magnetic shielding around FOG.