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连续旋转式寻北仪以其突出的性能成为当前寻北仪研究的热点,但关于转台误差对连续旋转寻北算法精度影响的分析很少。针对速率偏频激光陀螺寻北仪,研究了转台测角周期性误差对寻北结果的影响。理论分析表明,测角周期性误差的存在会导致寻北结果偏离真实值,必须对其进行建模和补偿以提高寻北精度。对理论分析结果进行了仿真实验和样机寻北实验验证。
Continuous Rotating North Finder has become the focus of current research on North Finder with its outstanding performance. However, there are few analyzes on the influence of Rotary Table Rotation on the accuracy of continuous North Finding. Aiming at the frequency-shifting laser gyro north-finder, the effect of the periodic error of the goniometer’s angle on the north-seeking result was studied. Theoretical analysis shows that the existence of periodic error of angle measurement will lead to the deviation of the north-seeking result from the true value, which must be modeled and compensated to improve the north-seeking accuracy. The theoretical analysis of the results of the simulation experiments and prototype north to verify the experiment.