Thus, the effects of initial alignment errors and gyro drifts can not be neglected and must be estimated and compensated.
因此，初始定向误差和陀螺漂移的影响不能忽略，必须对其进行估计和补偿。
The bias of MEMS gyro is instable , if it can not be compensated on line, the accuracy of INS will be low.
由于微机械陀螺零偏重复性和稳定性差，若不能实时跟踪零偏变化，则由此产生的导航误差较大。
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