Trueazimuth of moving target is determined using phase-comparison interferometer.
动目标的真实方位由相位比较干涉仪测定。
2
On condition that we have known the trueazimuth of the tunnel and determined only two false dip in the tunnel, the attitude value has gotten by simple computation.
在已知巷道掘进方位角前提下，仅现场实测两个伪倾角数值，经简单公式计算，便可得到顶板产状。
3
After that, rotating the sensitive axis of the gyro to point the true north, the instrument is working in the azimuth mode to constantly display azimuth angle of the carrier.