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设计了一套高精度的速率偏频激光陀螺寻北仪样机。样机主要由90型速率偏频激光陀螺和高精度单轴一体化转台构成,采用东西向二位置寻北方案,通过滑动平均法处理采样数据,降低量化误差的影响。在地理纬度28.2°处进行寻北实验,结果表明,静基座条件下200s寻北精度优于16″。
A set of high-precision rate-shifting laser gyro north-seeking prototype was designed. The prototype is mainly composed of a 90-type rate-shifting laser gyro and a high-precision single-axis integrated turntable. The northeast-to-north two-position search scheme is adopted. The sampling data is processed by the sliding average method to reduce the influence of quantization error. The north-seeking experiment at the geographic latitude of 28.2 ° showed that the 200-second North Positioning accuracy was better than 16 "under static base conditions.