文中重点介绍了正交漂移及其控制，推导出正交漂移分量的数学模型。
The quadrature drift and control were specially introduced and quadrature drift components equation was deduced.
对于偏航角度，由于偏航角和重力方向正交，无法用加速度计测量得到，因此还需要采用其他设备来校准测量偏航角度的陀螺仪的漂移值。
For yaw, which is orthogonal to gravity, the accelerometers can't help you, so you need something else to correct your drifting yaw gyro.
采用正交磁场由功率调谐曲线实现稳频，可使双频频差的漂移量大大降低。
Adopting mutually orthogonal magnetic fields, the power tuning curve is utilized for stabilizing optical frequency, the frequency difference drift of double frequency is lower greatly.
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