The Analysis of Turntable Error and Arithmetic Design for North-Finder Based on Rate Biased RLG
Currently, the continuous rotary north-finder is widely discussed for its outstanding performance. However, few researches on the influence of turntable error to the continuous rotary north-finding algorithm can be found. Turntable errors, such as the stability of rotate speed, the periodic angle measurement error and the discrete angle measurement error, are studied for the north-finder based on rate biased RLG (ring laser gyro). Two north-finding algorithms are designed, which can restrain the influence of angle measurement errors and the stability of rotate speed separately. Finally, simulation and experiments are performed to verify the algorithms.
Y. Zhang et al., "The Analysis of Turntable Error and Arithmetic Design for North-Finder Based on Rate Biased RLG", Advanced Materials Research, Vols. 383-390, pp. 6313-6318, 2012