Radiation Characteristics Test of FOG Circuit Magnetic Field

Abstract Aiming at the magnetic field issue in the engineering application of fiber optic gyroscope (FOG), this paper explores the distribution law of magnetic field generated by the internal circuit of gyroscope and builds an electromagnetic field distribution scanning system to complete the test. The experimental results show that the overall radiation of FOG circuit magnetic field is low, and the front circuit radiation intensity is higher than that of bottom circuit. The front radiation is strongest at 8.76MHz, approximately 0.01mGs. It is of referential significance for the study of FOG magnetic sensitivity.