26 June 1997 Dynamic north-finding scheme based on a fiber optic gyroscope
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Abstract
In the gyrocompass system, the use of the fiber optic gyroscope (FOG) makes this traditional system considerably attractive because it has strong points in terms of weight, power, warming-up time, and cost. In this paper, a novel dynamic north-finding scheme based on a FOG, which can be applied to the gyrocompass system, is presented. The analytical model for the earth signal of the FOG is described, and the earth signals passed through lock-in amplifiers are modeled. Additionally, a north-finding algorithm using two lock-in amplifier outputs is developed, and the proposed scheme is organized by the developed algorithm. Simulation results are included to verify the performance of the proposed scheme.
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Sung-Jin Kim, Sang-Sik Lee, Yong-Soo Kwon, Jung-Chul Bae, Suk-Jeong Lee, "Dynamic north-finding scheme based on a fiber optic gyroscope", Proc. SPIE 3087, Navigation and Control Technologies for Unmanned Systems II, (26 June 1997); doi: 10.1117/12.277215; https://doi.org/10.1117/12.277215
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