Horizontal gyro drift is measured in state of azimuthal alignment by the two localization laws of the three directions of north, west and up, as well as east, north and up.
通过方位精对准状态在北西天坐标系和东北天坐标系两次定位测量水平陀螺漂移，在水平精对准状态下记录北向速度并采用最小二乘法解算方位陀螺漂移。
Horizontal gyro drift is measured in state of azimuthal alignment by the two localization laws of the three directions of north, west and up, as well as east, north and up.
通过方位精对准状态在北西天坐标系和东北天坐标系两次定位测量水平陀螺漂移，在水平精对准状态下记录北向速度并采用最小二乘法解算方位陀螺漂移。
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